BLAST: the far-infrared/radio correlation in distant galaxies (2009)
Ivison, R. J., Alexander, David M., Biggs, Andy D., Brandt, W. N., Chapin, Edward L., Coppin, Kristen E. K., ...
We investigate the correlation between far-infrared (FIR) and radio luminosities in distant galaxies, a lynchpin of modern astronomy. We use data from the Balloon-borne Large Aperture Submillimetre...
Riechers , Dominik A., Walter, Fabian, Bertoldi, Frank, Carilli, Christopher L., Aravena, Manuel, Neri, Roberto, ...
We have imaged CO(J = 7→6) and C i(^3P_2→^3P_1) emission in the host galaxy of the z = 6.42 quasar SDSS J114816.64+525150.3 (hereafter J1148+5251) through observations with the Plateau de Bure...
Lee, Janice C., De Paz, Armando Gil, Tremonti, Christy, Kennicutt Jr., Robert C., Salim, Samir, Bothwell, Matthew, ...
(abridged) Using a complete sample of ~300 star-forming galaxies within 11 Mpc, we evaluate the consistency between star formation rates (SFRs) inferred from the far ultraviolet (FUV) non-ionizing...
Does Stellar Feedback Create HI Holes? An HST/VLA Study of Holmberg II (2009)
Weisz, Daniel R., Skillman, Evan D., Cannon, John M., Dolphin, Andrew E., Kennicutt Jr., Robert C., Lee, Jance, ...
We use deep HST/ACS F555W and F814W photometry of resolved stars in the M81 Group dwarf irregular galaxy Ho II to study the hypothesis that the holes identified in the neutral ISM (HI) are created by...
Riechers, Dominik A., Walter, Fabian, Bertoldi, Frank, Carilli, Christopher L., Aravena, Manuel, Neri, Roberto, ...
We have imaged CO(J=7-6) and CI(3P2-3P1) emission in the host galaxy of the z=6.42 quasar SDSS J114816.64+525150.3 (hereafter: J1148+5251) through observations with the Plateau de Bure...
Dust in the Early (z>1) Universe (2009)
Although dust emission at cosmological distances has only been detected a little more than a decade ago, remarkable progress has been achieved since then in characterizing the far-infrared emission...
Moment tensor inversions of icequakes on Gornergletscher, Switzerland (2009)
Walter, Fabian, Clinton, John F., Deichmann, Nicholas, Dreger, Douglas S., Minson, Sarah E., Funk, Martin
We have determined seismic source mechanisms for shallow and intermediate-depth icequake clusters recorded on the glacier Gornergletscher, Switzerland, during the summers of 2004 and 2006. The...
Coppin, Kristen, Smail, Ian, Alexander, David M., Weiss, Axel, Walter, Fabian, Swinbank, Mark, ...
We report on the identification of the highest redshift submm-selected source currently known: LESSJ033229.4-275619. This source was detected in the Large Apex BOlometer CAmera (LABOCA) Extended...
A kiloparsec-scale hyper-starburst in a quasar host less than 1 gigayear after the Big Bang (2009)
Walter, Fabian, Riechers, Dominik, Cox, Pierre, Neri, Roberto, Carilli, Chris, Bertoldi, Frank, ...
The host galaxy of the quasar SDSS J114816.64+1525150.3 (at redshift z=6.42, when the Universe was less than a billion years old) has an infrared luminosity of 2.2x10^(13) times that of the...
A Sensitive Search for [N II]205 μm Emission in a z = 6.4 Quasar Host Galaxy (2009)
Walter, Fabian, Weiss, Axel, Riechers, Dominik A., Carilli, Christopher L., Bertoldi, Frank, Cox, Pierre, ...
We present a sensitive search for the 3P1 → 3P0 ground-state fine structure line at 205 μm of ionized nitrogen ([N II]205μm) in one of the highest-redshift quasars (J1148+5251 at z = 6.42) using...
Triggered Star Formation and the Creation of the Supergiant H I Shell in IC 2574 (2009)
Weisz, Daniel R., Skillman, Evan D., Cannon, John M., Walter, Fabian, Brinks, Elias, Ott, Jürgen, ...
Based on deep imaging from the Advanced Camera for Surveys aboard the Hubble Space Telescope (HST), we present new evidence that stellar feedback created a ~1 kpc supergiant H I shell (SGS) and...
Riechers, Dominik A., Walter, Fabian, Carilli, Chirstopher L., Lewis, Geraint F.
We have mapped the molecular gas content in the host galaxy of the strongly lensed high-redshift quasar APM 08279+5255 (z = 3.911) with the Very Large Array at 0\farcs3 resolution. The CO(J = 1➝0)...
Triggered Star Formation and the Creation of the Supergiant HI Shell in IC 2574 (2008)
Weisz, Daniel R., Skillman, Evan D., Cannon, John M., Walter, Fabian, Brinks, Elias, Ott, Juergen, ...
Based on deep imaging from the Advanced Camera for Surveys aboard the Hubble Space Telescope, we present new evidence that stellar feedback created a ~ 1 kpc supergiant HI shell (SGS) and triggered...
The Molecular ISM of Quasar Host Galaxies in the Early Universe (2008)
Dominik Alexander Riechers, Referees Prof, Dr. Hans–walter Rix, Dr. Fabian Walter
Detailed studies of the molecular gas phase in the host galaxies of the highest redshift quasars are important for our understanding of the formation and evolution of quasars and their bulges, since...
Riechers, Dominik A., Walter, Fabian, Brewer, Brendon J., Carilli, Christopher L., Lewis, Geraint F., Bertoldi, Frank, ...
We present high-resolution (0.3") Very Large Array imaging of the molecular gas in the host galaxy of the high-redshift quasar PSS J2322+1944 (z = 4.12). These observations confirm that the molecular...
The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively (2008)
Leroy, Adam K., Walter, Fabian, Brinks, Elias, Bigiel, Frank, Madore, Barry, ...
We measure the star formation efficiency (SFE), the star formation rate per unit gas, in 23 nearby galaxies and compare it to expectations from proposed star formation laws and thresholds. We use HI...
Resolved Properties of Extragalactic Giant Molecular Clouds (2008)
Bolatto, Alberto D., Leroy, Adam K., Rosolowsky, Erik, Walter, Fabian, Blitz, Leo
Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting the initial...
Are the kinematics of DLAs in agreement with their arising in the gas disks of galaxies? (2008)
Zwaan, Martin, Walter, Fabian, Ryan-Weber, Emma, Brinks, Elias, Kennicutt Jr., Robert C.
We demonstrate in this paper that the velocity widths of the neutral gas in Damped Ly Alpha (DLA) systems are inconsistent with these systems originating in gas disks of galaxies similar to those...
The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales (2008)
Bigiel, Frank, Leroy, Adam, Walter, Fabian, Brinks, Elias, Madore, Barry, ...
(Abridged) We present a comprehensive analysis of the relationship between star formation rate surface density (SFR SD) and gas surface density (gas SD) at sub-kpc resolution in a sample of 18 nearby...
Oh, Se-Heon, Walter, Fabian, Brinks, Elias, Kennicutt Jr, Robert C.
We present a new method to remove the impact of random and small-scale non-circular motions from HI velocity fields in galaxies in order to better constrain the dark matter properties for these...
Formation of a Quasar Host Galaxy through a Wet Merger 1.4 Billion Years after the Big Bang (2008)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Bertoldi, Frank, Momjian, Emmanuel
We present high-resolution Very Large Array imaging of the molecular gas in the host galaxy of the highredshift quasar BRI 1335-0417 (z = 4.41). Our CO(J = 2 → 1) observations have a linear...
The Recent Star Formation Histories of M81 Group Dwarf Irregular Galaxies (2008)
Weisz, Daniel R., Skillman, Evan D., Cannon, John M., Dolphin, Andrew E., Kennicutt Jr., Robert C., Lee, Janice, ...
We present observations and analysis of nine dwarf irregular galaxies (dIs) in the M81 Group taken with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The nine galaxy sample (the...
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Lewis, Geraint F.
We have mapped the molecular gas content in the host galaxy of the strongly lensed high redshift quasar APM 08279+5255 (z=3.911) with the Very Large Array at 0.3" resolution. The CO(J=1-0) emission...
Formation of a Quasar Host Galaxy through a Wet Merger 1.4 Billion Years after the Big Bang (2008)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Bertoldi, Frank, Momjian, Emmanuel
We present high-resolution Very Large Array imaging of the molecular gas in the host galaxy of the high redshift quasar BRI 1335-0417 (z=4.41). Our CO(2-1) observations have a linear resolution of...
Connecting gas dynamics and star formation histories in nearby galaxies: the VLA—ANGST survey (2008)
Ott, Jürgen, Skillman, Evan, Dalcanton, Julianne, Walter, Fabian, Stilp, Adrienne, Koribalski, Bärbel, ...
In recent years, HST revolutionized the field of star formation in nearby galaxies. Due to its high angular resolution it has now become possible to construct star formation histories of individual...
The Resolved Properties of Extragalactic Giant Molecular Clouds (2008)
Bolatto, Alberto D., Leroy, Adam K., Rosolowsky, Erik, Walter, Fabian, Blitz, Leo
We use high spatial resolution observations of CO to systematically measure the resolved size-line width, luminosity-line width, luminosity-size, and the mass-luminosity relations of Giant Molecular...
Chemical and physical small-scale structure in a pre-stellar core (2008)
Heithausen, Andreas, Boettner, Christoph, Walter, Fabian
We present a comparative study of several molecular lines and of the dust contiunuum at 1.2mm in a pre-stellar core that is embedded in the Galactic cirrus cloud MCLD123.5+24.9. Previous studies...
Riechers, Dominik A., Walter, Fabian, Brewer, Brendon J., Carilli, Christopher L., Lewis, Geraint F., Bertoldi, Frank, ...
We present high-resolution (0.3") Very Large Array (VLA) imaging of the molecular gas in the host galaxy of the high redshift quasar PSS J2322+1944 (z=4.12). These observations confirm that the...
Connecting Gas Dynamics and Star Formation Histories in Nearby Galaxies: The VLA-ANGST Survey (2008)
Ott, Juergen, Skillman, Evan, Dalcanton, Julianne, Walter, Fabian, Stilp, Adrienne, Koribalski, Baerbel, ...
In recent years, HST revolutionized the field of star formation in nearby galaxies. Due to its high angular resolution it has now become possible to construct star formation histories of individual...
Spitzer Observations of Star Formation in the Extreme Outer Disk of M83 (NGC5236) (2008)
Dong, Hui, Calzetti, Daniela, Regan, Michael, Thilker, David, Bianchi, Luciana, Meurer, Gerhardt R., ...
Spitzer IRAC observations of two fields in the XUV-disk of M83 have been recently obtained,3R_{HII} away from the center of the galaxy (R_{HII)=6.6 kpc).GALEX UV images have shown the two fields to...
Tan, Jonathan C., Beuther, Henrik, Walter, Fabian, Blackman, Eric G.
Supermassive black holes in giant elliptical galaxies are remarkably faint given their expected accretion rates. This motivates models of radiatively inefficient accretion due to either ion-electron...
Oh, Se-Heon, Walter, Fabian, Brinks, Elias, Kennicutt, Robert C.
We present a new method to remove the impact of random and small-scale noncircular motions from H I velocity fields in (dwarf) galaxies in order to better constrain the dark matter properties for...
The resolved properties of extragalactic giant molecular clouds (2008)
Bolatto, Alberto D., Leroy, Adam K., Rosolowsky, Erik, Walter, Fabian, Blitz, Leo
We use high spatial resolution observations of CO to systematically measure the resolved size-line width, luminosity-line width, luminosity-size, and mass-luminosity relations of GMCs in a variety of...
Formation of a quasar host galaxy through a wet merger 1.4 billion years after the big bang (2008)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Bertoldi, Frank, Momjian, Emmanuel
We present high-resolution Very Large Array imaging of the molecular gas in the host galaxy of the high-redshift quasar BRI 1335-0417 (z=4.41). Our CO(J=2-->1) observations have a linear resolution...
Spitzer observations of star formation in the extreme outer disk of M83 (NGC5236) (2008)
Dong, Hui, Calzetti, Daniela, Regan, Michael, Thilker, David, Bianchi, Luciana, Meurer, Gerhardt R., ...
Spitzer Infrared Array Camera (IRAC) observations of two fields in the extended UV disk (XUV-disk) of M83 have been recently obtained, ~3 R HII away from the center of the galaxy (R HII = 6.6 kpc)....
Free floating HI clouds in the M 81 group (2008)
Brinks, Elias, Walter, Fabian, Skillman, Evan D.
Recent VLA observations pointed at dwarf spheroidal (dSph) galaxies in the M 81 group reveal a hitherto hidden population of extremely low mass (~ 105 M) HI clouds with no obvious optical...
Are the kinematics of DLAs in agreement with their arising in the gas disks of galaxies? (2008)
Zwaan, Martin, Walter, Fabian, Ryan-Weber, Emma, Brinks, Elias, Kennicutt, Robert C.
We demonstrate in this paper that the velocity widths of the neutral gas in damped Lyalpha (DLA) systems are inconsistent with these systems originating in gas disks of galaxies, similar to those...
Thermal emission from warm dust in the most distant quasars (2008)
Wang, Ran, Carilli, Chris L., Wagg, Jeff, Bertoldi, Frank, Walter, Fabian, Menten, Karl M., ...
We report new continuum observations of 14 z~6 quasars at 250 GHz and 14 quasars at 1.4 GHz. We summarize all recent millimeter and radio observations of the sample of the 33 quasars known with...
The recent star formation histories of M81 group dwarf irregular galaxies (2008)
Weisz, Daniel R., Skillman, Evan D., Cannon, John M., Dolphin, Andrew E., Kennicutt, Robert C., Lee, Janice, ...
We present observations and analysis of nine dwarf irregular galaxies (dIs) in the M81 Group taken with the Advanced Camera for Surveys aboard the Hubble Space Telescope. The nine galaxies (the...
Detecting the most distant (z>7) objects with ALMA (2008)
Walter, Fabian, Carilli, Chris
Detecting and studying objects at the highest redshifts, out to the end of Cosmic Reionization at z>7, is clearly a key science goal of ALMA. ALMA will in principle be able to detect objects in this...
Sharc-II 350 mm observations of thermal emission from warm dust in z >= 5 Quasars (2008)
Wang, Ran, Wagg, Jeff, Carilli, Chris L., Benford, Dominic J., Dowell, C. Darren, Bertoldi, Frank, ...
We present observations of four z >= 5 SDSS quasars at 350 mum with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations that have been...
Molecular gas in the early universe (2008)
Over the last few years, the study of high redshift QSOs has been revolutionized in three ways. First, wide field surveys have revealed 100's of high zQSOs, right back to the epoch of cosmic...
Things: the H I Nearby Galaxy Survey (2008)
Walter, Fabian, Brinks, Elias, Bigiel, Frank, Kennicutt, Robert C., Thornley, Michele D., ...
We present "The H I Nearby Galaxy Survey (THINGS)," a high spectral (
Riechers, Dominik A., Walter, Fabian, Brewer, Brendon J., Carilli, Christopher L., Lewis, Geraint F., Bertoldi, Frank, ...
We present high-resolution (0.3") Very Large Array imaging of the molecular gas in the host galaxy of the high-redshift quasar PSS J2322+1944 (z=4.12). These observations confirm that the molecular...
Connecting Gas Dynamics and Star Formation Histories in Nearby Galaxies: The VLA-ANGST Survey (2008)
Ott, Jürgen, Skillman, Evan, Dalcanton, Julianne, Walter, Fabian, Stilp, Adrienne, Koribalski, Bärbel, ...
In recent years, HST revolutionized the field of star formation in nearby galaxies. Due to its high angular resolution it has now become possible to construct star formation histories of individual...
The star formation efficiency in nearby galaxies: measuring where gas forms stars effectively (2008)
Leroy, Adam K., Walter, Fabian, Brinks, Elias, Bigiel, Frank, Madore, Barry, ...
We measure the star formation efficiency (SFE), the star formation rate (SFR) per unit of gas, in 23 nearby galaxies and compare it with expectations from proposed star formation laws and thresholds....
Are the kinematics of DLAs in agreement with their arising in the gas disks of galaxies? (2008)
Zwaan, Martin, Walter, Fabian, Ryan-Weber, Emma, Brinks, Elias, Kennicutt, Robert C.
We demonstrate in this paper that the velocity widths of the neutral gas in damped Lyα (DLA) systems are inconsistent with these systems originating in gas disks of galaxies, similar to those...
Are the kinematics of DLAs in agreement with their arising in the gas disks of galaxies? (2008)
Zwaan, Martin, Walter, Fabian, Ryan-Weber, Emma, Brinks, Elias, Kennicutt, Robert C.
We demonstrate in this paper that the velocity widths of the neutral gas in damped Lyα (DLA) systems are inconsistent with these systems originating in gas disks of galaxies, similar to those...
SHARC-II 350 micron Observations of Thermal Emission from Warm Dust in z>=5 Quasars (2007)
Wang, Ran, Wagg, Jeff, Carilli, Chris L., Benford, Dominic J., Dowell, C. Darren, Bertoldi, Frank, ...
We present observations of four z>= SDSS quasars at 350 micron with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations that have been...
Astronomy And Astrophysics (2007)
April Evidence, Axel Wei, Fabian Walter, Nikolaus Neininger, Uli Klein
. We present evidence for an expanding superbubble in M 82 (diameter: ß 130 pc, expansion velocity: ß 45 km s \Gamma1 , mass: ß 8 \Delta 10 6 M fi ). It is seen in the 12 CO (J = 1 ! 0), 12 CO(J =...
X-RAY OBSERVATIONS OF SUPERBUBBLES IN DWARF GALAXIES (2007)
Elías Brinks, Fabian Walter, Jürgen Kerp
Existen indicaciones claras, basadas en observaciones de hidrógeno neutro, que el medio interestelar es violento y está dominado por burbujas llenas de plasma caliente. Sin embargo, excepto por...
Existen indicaciones claras, basadas en observaciones de hidrogeno neutro, que el medio interestelar es violento y esta dominado por burbujas llenas de plasma caliente. Sin embargo, excepto por...
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Bertoldi, Frank
We report a sensitive search for the HCN(J=2-1) emission line towards SDSS J1148+5251 at z=6.42 with the VLA. HCN emission is a star formation indicator, tracing dense molecular hydrogen gas (n(H2)...
Free-Floating HI Clouds in the M 81 Group (2007)
Brinks, Elias, Walter, Fabian, Skillman, Evan D.
Recent VLA observations pointed at dwarf spheroidal (dSph) galaxies in the M 81 group reveal a hitherto hidden population of extremely low mass (~1e5 Msol) HI clouds with no obvious optical...
Black hole masses and enrichment of z ~ 6 SDSS quasars (2007)
Kurk, Jaron D., Walter, Fabian, Fan, Xiaohui, Jiang, Linhua, Riechers, Dominik A., Rix, Hans-Walter, ...
We present sensitive near-infrared spectroscopic observations for a sample of five z ~ 6 quasars. These are amongst the most distant, currently known quasars in the universe. The spectra have been...
Jiang, Linhua, Fan, Xiaohui, Vestergaard, Marianne, Kurk, Jaron D., Walter, Fabian, Kelly, Brandon C., ...
We present Gemini near-infrared spectroscopic observations of six luminous quasars at z=5.8$\sim$6.3. Five of them were observed using Gemini-South/GNIRS, which provides a simultaneous wavelength...
Detection of Emission from the CN Radical in the Cloverleaf Quasar at z=2.56 (2007)
Riechers, Dominik A., Walter, Fabian, Cox, Pierre, Carilli, Christopher L., Weiss, Axel, Bertoldi, Frank, ...
We report the detection of CN(N=3-2) emission towards the Cloverleaf quasar (z=2.56) based on observations with the IRAM Plateau de Bure Interferometer. This is the first clear detection of emission...
Dust and Atomic Gas in Dwarf Irregular Galaxies of the M81 Group: The SINGS and THINGS View (2007)
Walter, Fabian, Cannon, John M., Roussel, Hélène, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the Spitzer SINGS and VLA THINGS surveys. The Spitzer observations provide a first...
Millimeter and Radio Observations of z~6 Quasars (2007)
Wang, Ran, Carilli, Chris, Beelen, Alexandre, Bertoldi, Frank, Fan, Xiaohui, Walter, Fabian, ...
We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250...
Detecting the Most Distant (z>7) Objects with ALMA (2007)
Walter, Fabian, Carilli, Chris
Detecting and studying objects at the highest redshifts, out to the end of Cosmic Reionization at z>7, is clearly a key science goal of ALMA. ALMA will in principle be able to detect objects in this...
The Low CO Content of the Extremely Metal Poor Galaxy I Zw 18 (2007)
Leroy, Adam, Cannon, John, Walter, Fabian, Bolatto, Alberto, Weiss, Axel
We present sensitive molecular line observations of the metal-poor blue compact dwarf I Zw 18 obtained with the IRAM Plateau de Bure interferometer. These data constrain the CO J=1-0 luminosity...
Millimeter and radio observations of z~6 quasars (2007)
Wang, Ran, Carilli, Chris, Beelen, Alexandre, Bertoldi, Frank, Fan, Xiaohui, Walter, Fabian, ...
We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250...
Dust and atomic gas in dwarf irregular galaxies of the M81 group: the SINGS and THINGS view (2007)
Walter, Fabian, Cannon, John M., Roussel, Hélène, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the Spitzer SINGS and VLA THINGS surveys. The Spitzer observations provide a first...
Ultraviolet and infrared diagnostics of star formation and dust in NGC 7331 (2007)
Thilker, David A., Boissier, Samuel, Bianchi, Luciana, Calzetti, Daniela, Boselli, Alessandro, Dale, Daniel A., ...
We present images of NGC 7331 obtained with GALEX and Spitzer, tracing
Detection of emission from the CN radical in the cloverleaf quasar at z=2.56 (2007)
Riechers, Dominik A., Walter, Fabian, Cox, Pierre, Carilli, Christopher L., Weiss, Axel, Bertoldi, Frank, ...
We report the detection of CN(N=3-->2) emission toward the Cloverleaf quasar (z=2.56) based on observations with the IRAM Plateau de Bure Interferometer. This is the first clear detection of emission...
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Bertoldi, Frank
We report a sensitive search for the HCN(J = 2 --> 1) emission line toward SDSS J114816.64+525150.3 (hereafter J1148+5251) at z = 6.42 with the Very Large Array (VLA). HCN emission is a star...
The low CO content of the extremely metal poor galaxy I Zw 18 (2007)
Leroy, Adam, Cannon, John, Walter, Fabian, Bolatto, Alberto, Weiss, Axel
We present sensitive molecular line observations of the metal-poor blue compact dwarf I Zw 18 obtained with the IRAM Plateau de Bure interferometer. These data constrain the CO J=1-0 luminosity...
Star formation in NGC 5194 (M51a). II. The spatially resolved starformation law (2007)
Kennicutt, Robert C., Calzetti, Daniela, Walter, Fabian, Helou, George, Hollenbach, David J., Armus, Lee, ...
We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxy M51a (NGC 5194), using multiwavelength data obtained as part of...
Missing mass in collisional debris from galaxies (2007)
Bournaud, Frédéric, Duc, Pierre-Alain, Brinks, Elias, Boquien, Médéric, Amram, Philippe, Lisenfeld, Ute, ...
Recycled dwarf galaxies can form in the collisional debris of massive galaxies. Theoretical models predict that, contrary to classical galaxies, these recycled galaxies should be free of nonbaryonic...
The recent star formation histories of nearby galaxies (2007)
Skillman, Evan D., Cannon, John M., Dolphin, Andrew E., Kennicutt, Robert C., Lee, Janice C., Walter, Fabian, ...
Not Available
Metallicity and black hole masses of z6 quasars (2007)
Kurk, Jaron D., Walter, Fabian, Riechers, Dominik, Rix, Hans-Walter, Wagner, Stefan, Pentericci, Laura, ...
Not Available
Observations of supershells in the interstellar medium of nearby galaxies (2007)
Brinks, Elias, Bagetakos, Ioannis, Walter, Fabian, De Blok, Erwin
The formation of massive stars in a gas-rich spiral or dwarf galaxy has a dramatic effect on the surrounding Interstellar Medium (ISM). Newly formed massive stars (M > 8 M[o]) will have a major...
An inventory of supershells in nearby galaxies: first results from THINGS (2007)
Bagetakos, Ioannis, Brinks, Elias, Walter, Fabian, De Blok, Erwin
The HI Nearby Galaxy Survey (THINGS), is a 21-cm HI line survey of a sample of 34 nearby (3-10 Mpc) galaxies. The observations were carried out with the VLA and have a velocity resolution of less...
Fine-scale structure of the neutral ISM in M81 (2007)
Bagetakos, Ioannis, Brinks, Elias, Walter, Fabian, De Blok, Erwin
We present an analysis of the fine-scale structure of the neutral ISM as traced via the 21-cm line of atomic hydrogen (HI) in the nearby galaxy M81. This galaxy forms part of "The HI Nearby Galaxy...
Tan, Jonathan C., Beuther, Henrik, Walter, Fabian, Blackman, Eric G.
Supermassive black holes in giant elliptical galaxies are remarkably faint given their expected accretion rates. This motivates models of radiatively inefficient accretion, due to either ion-electron...
Cannon, John M., Walter, Fabian, Armus, Lee, Bendo, George J., Calzetti, Daniela, Draine, Bruce T., ...
We present Spitzer imaging of the metal-deficient (Z ~30% Z_sun) Local Group dwarf galaxy NGC 6822. On spatial scales of ~130 pc, we study the nature of IR, H alpha, HI, and radio continuum emission....
Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations (2006)
Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...
We present Spitzer observations of thirteen z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8...
X-ray observations of superbubbles in dwarf galaxies (2006)
Elías Brinks, Fabian Walter, Jürgen Kerp
X-ray observations of superbubbles in dwarf galaxies
Bendo, George J., Buckalew, Brent A., Dale, Daniel A., Draine, Bruce T., Joseph, Robert D., ...
We present Spitzer 3.6–160 μm images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 μm images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 10^9 M⊙ ; low-luminosity active...
CO(1-0) in z >/~ 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs (2006)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Knudsen, Kirsten K., Lo, K. Y., Benford, Dominic J., ...
We present CO(1-0) observations of the high-redshift quasi-stellar objects (QSOs) BR 1202-0725 (z=4.69), PSS J2322+1944 (z=4.12), and APM 08279+5255 (z=3.91) using the NRAO Green Bank Telescope (GBT)...
A Search for H2O in the Strongly Lensed QSO MG 0751+2716 at z=3.2 (2006)
Riechers, Dominik A., Weiss, Axel, Walter, Fabian, Carilli, Christopher L., Knudsen, Kirsten K.
We present a search for 183 GHz H_2O(3_13-2_20) emission in the infrared-luminous quasar MG 0751+2716 with the NRAO Very Large Array (VLA). At z=3.200+/-0.001, this water emission feature is...
First Detection of HCO+ Emission at High Redshift (2006)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Weiss, Axel, Bertoldi, Frank, Menten, Karl M., ...
We report the detection of HCO+(1-0) emission towards the Cloverleaf quasar (z=2.56) through observations with the Very Large Array. This is the first detection of ionized molecular gas emission at...
Warm Dust and Spatially Variable PAH Emission in the Dwarf Starburst Galaxy NGC 1705 (2006)
Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present Spitzer observations of the dwarf starburst galaxy NGC 1705 obtained as part of SINGS. The galaxy morphology is very different shortward and longward of ~5 microns: short-wavelength...
Extended star formation and molecular gas in the tidal arms near NGC 3077 (2006)
Walter, Fabian, Martin, Crystal L., Ott, Jürgen
We report the detection of ongoing star formation in the prominent tidal arms near NGC 3077 (member of the M81 triplet). In total, 36 faint compact H II regions are identified, covering an area of...
A search for H2O in the strongly lensed QSO MG 0751+2716 at z = 3.2 (2006)
Riechers, Dominik A., Weiss, Axel, Walter, Fabian, Carilli, Christopher L., Knudsen, Kirsten K.
We present a search for 183 GHz H2O (313-->220) emission in the infrared-luminous quasar MG 0751+2716 with the NRAO Very Large Array (VLA). At z=3.200+/-0.001, this water emission feature is...
First detection of HCO+ emission at high redshift (2006)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Weiss, Axel, Bertoldi, Frank, Menten, Karl M., ...
We report the detection of HCO+ (J=1-->0) emission toward the Cloverleaf quasar (z=2.56) through observations with the Very Large Array. This is the first detection of ionized molecular gas emission...
CO(1-0) in z >~ 4 quasar fost galaxies: No evidence for extended molecular gas reservoirs (2006)
Riechers, Dominik A., Walter, Fabian, Carilli, Christopher L., Knudsen, Kirsten K., Lo, K. Y., Benford, Dominic J., ...
We present 12CO(J=1-->0) observations of the high-redshift quasi-stellar objects (QSOs) BR 1202-0725 (z=4.69), PSS J2322+1944 (z=4.12), and APM 08279+5255 (z=3.91) using the NRAO Green Bank Telescope...
Probing the evolution of infrared properties of z ~ 6 quasars: Spitzer observations (2006)
Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...
We present Spitzer observations of 13 z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8 (SDSS...
Cannon, John M., Walter, Fabian, Armus, Lee, Bendo, George J., Calzetti, Daniela, Draine, Bruce T., ...
We present Spitzer imaging of the metal-deficient (Z~=30% Zsolar) Local Group dwarf galaxy NGC 6822. On spatial scales of ~130 pc, we study the nature of IR, Halpha, H I, and radio continuum...
Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present Spitzer observations of the nearby dwarf starburst galaxy NGC 1705 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. The galaxy morphology is very different shortward and...
Bendo, George J., Buckalew, Brent A., Dale, Daniel A., Draine, Bruce T., Joseph, Robert D., Kennicutt, Robert C., ...
We present Spitzer 3.6-160 mum images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 mum images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 109 Msolar low-luminosity active galactic...
George J. Bendo, Brent A. Buckalew, Daniel A. Dale, Bruce T. Draine, Robert D. Joseph, Robert C. Kennicutt, ...
We present Spitzer 3.6–160 m images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 m images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 10 9 M low-luminosity active galactic nucleus...
Spitzer Observations Of The Supergiant Shell Region In IC 2574 (2005)
Cannon, John M., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., Draine, Bruce T., ...
We present spatially resolved Spitzer imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. This region harbors...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2005)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
The Temperature Distribution of Dense Molecular Gas in the Center of NGC 253 (2005)
Ott, Juergen, Weiss, Axel, Henkel, Christian, Walter, Fabian
[abridged] We present interferometric maps of ammonia (NH3) of the nearby starburst galaxy NGC 253 [star formation rate: ~2.8 Mo yr^(-1)]. The observations have been taken with the Australia...
Intra-day Variability of Sagittarius A* at 3 Millimeters (2005)
Mauerhan, Jon C., Morris, Mark, Walter, Fabian, Baganoff, Frederick K.
We report observations and analysis of flux monitoring of Sagittarius A* at 3-mm wavelength using the OVRO millimeter interferometer over a period of eight days (2002 May 23-30). Frequent phase and...
Cannon, John M., Walter, Fabian, Skillman, Evan D., Van Zee, Liese
We present the first resolved study of the radio continuum properties of I Zw 18, the dwarf galaxy with the lowest known nebular metal abundance in the local universe. New Very Large Array radio...
A Chandra X-ray survey of nearby dwarf starburst galaxies: I. Data reduction and results (2005)
Ott, Juergen, Walter, Fabian, Brinks, Elias
(abridged) We present an analysis of Chandra X-ray observations of a sample of eight dwarf starburst galaxies (I Zw 18, VII Zw 403, NGC 1569, NGC 3077, NGC 4214, NGC 4449, NGC 5253, and He 2-10)....
Ott, Juergen, Walter, Fabian, Brinks, Elias
(abridged) We present a comprehensive comparison of the X-ray properties of a sample of eight dwarf starburst galaxies observed with Chandra (I Zw 18, VII Zw 403, NGC 1569, NGC 3077, NGC 4214, NGC...
Ott, Jürgen, Walter, Fabian, Brinks, Elias
We present a comprehensive comparison of the X-ray properties of a sample of eight dwarf starburst galaxies observed with Chandra (IZw18, VIIZw403, NGC1569, NGC3077, NGC4214, NGC4449, NGC5253 and...
The temperature distribution of dense molecular gas in the center of NGC 253 (2005)
Ott, Jürgen, Weiss, Axel, Henkel, Christian, Walter, Fabian
We present interferometric maps of ammonia (NH3) of the nearby starburst galaxy NGC 253. The observations have been taken with the Australia Telescope Compact Array and include the para-NH3 (1, 1)...
Maiolino, R., Cox, P., Caselli, P., Beelen, A., Bertoldi, F., Carilli, C. L., ...
We report the detection of the 2P3/2 --> 2P1/2 fine-structure line of C+ at 157.74 mu m in SDSS J114816.64+525150.3 (hereafter J1148+5251), the most distant known quasar, at z=6.42, using the IRAM...
Spitzer observations of the supergiant shell region in IC 2574 (2005)
Cannon, John M., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., Draine, Bruce T., ...
We present spatially resolved Spitzer Space Telescope imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey....
A Chandra X-ray survey of nearby dwarf starburst galaxies - I. Data reduction and results (2005)
Ott, Jürgen, Walter, Fabian, Brinks, Elias
We present an analysis of Chandra X-ray observations of a sample of eight dwarf starburst galaxies (IZw18, VIIZw403, NGC1569, NGC3077, NGC4214, NGC4449, NGC5253 and He2-10). Extended, diffuse X-ray...
Intraday variability of Sagittarius A* at 3 millimeters (2005)
Mauerhan, Jon C., Morris, Mark, Walter, Fabian, Baganoff, Frederick K.
We report observations and analysis of flux monitoring of Sagittarius A* at 3 mm wavelength using the Owens Valley Radio Observatory millimeter interferometer over a period of 8 days (2002 May...
Resolved molecular gas emission in J1148+5251: Fueling a starburst at z = 6.4 (2005)
We present high-resolution VLA observations of the molecular gas in the host galaxy of the highest redshift quasar currently known, SDSS J1148+5251 (z=6.42). Our VLA data of the CO(3-2) emission have...
Resolved molecular gas emission in a QSO host galaxy at z = 6.4 (2005)
We present high-resolution VLA observations of the molecular gas in the host galaxy of the highest-redshift quasar currently known, SDSS J1148+5251 (z=6.42). Our VLA data of the CO(3--2) emission...
VLA imaging of the intriguing H I cloud HIJASS J1021+6842 in the M81 Group (2005)
Walter, Fabian, Skillman, Evan D., Brinks, Elias
We present VLA H I 21 cm observations of HIJASS J1021+6842, which has been discovered in the direction of the M81 Group. Our synthesis imaging reveals that the H I is distributed over a larger...
Cannon, John M., Walter, Fabian, Skillman, Evan D., Van Zee, Liese
We present the first resolved study of the radio continuum properties of I Zw 18, the dwarf galaxy with the lowest known nebular metal abundance in the local universe. New Very Large Array radio...
Gas and dust in high redshift quasars (2005)
Cox, Pierre, Beelen, Alexandre, Bertoldi, Frank, Omont, Alain, Carilli, Chris L., Walter, Fabian
We review recent progress in the study of dust and gas in optically luminous, radio- quiet high-z quasars (QSOs). Highlights include the detection of thermal dust continuum in ~80 1 < z < 6.4...
The Temperature Distribution of Dense Molecular Gas in Starburst Cores (2005)
Ott, Jürgen, Weiß, Axel, Henkel, Christian, Walter, Fabian
We present interferometric maps of ammonia within the cores of a sample of eight prominent, southern starburst galaxies. The observations were performed with the Australia Telescope Compact Array. In...
VLA HI and OVRO CO Interferometry of a Tidal Dwarf Galaxy (2004)
Brinks, Elias, Duc, Pierre-Alain, Walter, Fabian
We present high resolution interferometric observations of the cool atomic and cold molecular ISM of the TDG candidate Arp 245N, an object resembling a dwarf galaxy in the northern tidal tail of the...
Molecular Gas in Nearby Dwarf Galaxies: Single Dish and Interferometric Results (2003)
Bolatto, Alberto D., Leroy, Adam, Simon, Josh D., Blitz, Leo, Walter, Fabian
We present results from an extensive survey of molecular gas in nearby dwarf galaxies. This survey consists of a single-dish search for CO emission at the UASO Kitt Peak 12m telescope and...
XMM-Newton search for hot gas in the dwarf galaxy IC 2574 (2003)
Kappes, Michael, Kerp, Juergen, Walter, Fabian
We present an XMM-Newton observation of the nearby dwarf galaxy IC 2574. This galaxy is part of our ensemble observed within a multi-frequency campaign to study the physical conditions of the...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Chandra Observations of Expanding Shells in the Dwarf Starburst Galaxy NGC 3077 (2003)
Ott, Juergen, Martin, Crystal L., Walter, Fabian
Deep Chandra observations (53 ks, ACIS-S3) of NGC 3077, a starburst dwarf galaxy in the M 81 triplet, resolve the X-ray emission from several supershells. The emission is brightest in the cavities...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Molecular Gas in M82: Resolving the Outflow and Streamers (2002)
Walter, Fabian, Weiss, Axel, Scoville, Nick
We present a high-resolution (3.6'', 70pc) CO(1-0) mosaic of the molecular gas in M 82 covering an area of 2.5' x 3.5' (2.8kpc x 3.9kpc) obtained with the OVRO millimeter interferometer. The...
A High-Resolution Rotation Curve of NGC 6822: A Test-case for Cold Dark Matter (2002)
Weldrake, David, De Blok, Erwin, Walter, Fabian
We present high resolution rotation curves of the local group dwarf irregular galaxy NGC 6822 obtained with the Australia Telescope Compact Array. Our best curves have an angular resolution of 8'' or...
ROSAT X-ray observations of the dwarf galaxy Holmberg II (2002)
Kerp, Juergen, Walter, Fabian, Brinks, Elias
We present a study of the irregular dwarf galaxy Holmberg II based on ROSAT PSPC observations (total exposure time: 22 ksec). Holmberg II is a nearby (3.2 Mpc), well-studied dwarf irregular galaxy....
Discovery of Molecular Gas in the Outflow and Tidal Arms around M82 (2001)
Taylor, Christopher L., Walter, Fabian, Yun, Min S.
We present the first fully sampled map of 12CO (1-0) emission from M82 covering the entire galaxy. Our map contains a 12 x 15 kpc^2 area. We find that extraplanar CO emission, previously reported at...
Evidence for Blow-out in the Low-mass Dwarf Galaxy Holmberg I (2001)
Ott, Juergen, Walter, Fabian, Brinks, Elias, Van Dyk, Schuyler D., Dirsch, Boris, Klein, Ulrich
We present radio and optical observations of Holmberg I (HoI), a member of the M81 group of galaxies (distance 3.6Mpc). HoI is a low-mass, low surface- brightness dwarf galaxy. High-resolution...
Atomic and Molecular Gas near NGC3077: The Making of a New Dwarf Galaxy? (2000)
Walter, Fabian, Heithausen, Andreas
Using the IRAM 30m radio telescope we have mapped the tidal arm feature south-east of NGC 3077 where we recently detected molecular gas in the CO (1-0) and (2-1) transitions. We find that the...
UV Observations of the Powering Source of the Supergiant Shell in IC2574 (2000)
Stewart, Susan G., Walter, Fabian
A multi-band analysis of the region containing the supergiant HI shell in the nearby dwarf irregular galaxy IC2574 presents evidence of a causal relationship between a central star cluster, the...
Extensive molecular gas in the tidal arms near NGC3077 - Birth of a dwarf galaxy? (2000)
Heithausen, Andreas, Walter, Fabian
Using the IRAM 30m radio telescope we have mapped the tidal arm feature south-east of NGC3077 where we recently detected molecular gas in the CO (J=1-0) and (2-1) transitions. We find that the...
X-ray observations of superbubbles in dwarf galaxies (2000)
Brinks , Elías, Kerp , Jürgen, Walter , Fabian
There is plenty of evidence from neutral hydrogen observations for a violent interstellar medium, dominated by hot-plasma lled superbubbles. However, there are few direct observations of their...
The Discovery of a Molecular Complex in the Tidal Arms near NGC 3077 (1999)
Walter, Fabian, Heithausen, Andreas
We present the discovery of a giant molecular complex (r=350 pc, M_ vir=10^7 M_sun) in the tidal arms south-east of NGC 3077, a member of the M 81 triplet. The complex is clearly detected in the 12CO...
Evidence for an Expanding Molecular Superbubble in M82 (1999)
Weiss, Axel, Walter, Fabian, Neininger, Nikolaus, Klein, Uli
We present evidence for an expanding superbubble in M82 (diameter: ~130 pc, expansion velocity: ~45 km/s, mass: ~8*10^6 SM). It is seen in the 12CO(J=1-0), 12CO(J=2-1), 13CO(J=1-0) and C18O(J=1-0)...
The Violent Interstellar Medium of Nearby Dwarf Galaxies (1999)
High resolution HI observations of nearby dwarf galaxies (most of which are situated in the M 81 group at a distance of about 3.2 Mpc) reveal that their neutral interstellar medium (ISM) is dominated...
Holes and Shells in the Interstellar Medium of the Nearby Dwarf Galaxy IC 2574 (1999)
We present HI synthesis observations of the nearby dwarf galaxy IC 2574 (a member of the M81 group of galaxies) made with the NRAO Very Large Array at high spatial and velocity resolution (95 pc x...
X-ray Emission from an Expanding Supergiant Shell in IC 2574 (1998)
Walter, Fabian, Kerp, Jürgen, Duric, Neb, Brinks, Elias, Klein, Uli
We present a multi--wavelength study of a supergiant shell within the violent interstellar medium of the nearby dwarf galaxy IC 2574, a member of the M81 group of galaxies. Neutral hydrogen (HI)...
A search for dark matter in the HII-galaxy IIZw33 and its companion /--by Fabian Walter. (1995)
Thesis (M.S.)--University of New Mexico, 1995.