Bars in Starbursts and AGNs -- A Quantitative Reexamination (2009)
Hao, Lei, Jogee, Shardha, Barazza, Fabio D., Marinova, Irina, Shen, Juntai
Galactic bars are the most important driver of secular evolution in galaxies. They can efficiently drive gas into the central kiloparsec of galaxies, thus feed circumnuclear starbursts, and possibly...
Robaina, Aday R., Bell, Eric F., Skelton, Rosalind E., McIntosh, Daniel H., Somerville, Rachel S., Zheng, Xianzhong, ...
Both observations and simulations show that major tidal interactions or mergers between gas-rich galaxies can lead to intense bursts of starformation. Yet, the average enhancement in star formation...
Wolf, Christian, Aragón-Salamanca, Alfonso, Balogh, Michael, Barden, Marco, Bell, Eric F., Gray, Meghan E., ...
Galaxies migrate from the blue cloud to the red sequence when their star formation is quenched. Here, we report on galaxies quenched by environmental effects and not by mergers or strong AGN as often...
Jogee, Shardha, Miller, Sarah H., Penner, Kyle, Skelton, Rosalind E., Conselice, Christopher J., Somerville, Rachel S., ...
We perform a comprehensive estimate of the frequency of galaxy mergers and their impact on star formation over z~0.24--0.80 (lookback time T_b~3--7 Gyr) using 3698 (M*>=1e9 Msun) galaxies with GEMS...
Frequency and properties of bars in cluster and field galaxies at intermediate redshifts (2009)
Barazza, Fabio D., Jablonka, Pascale, Desai, Vandana, Jogee, Shardha, Aragon-Salamanca, Alfonso, De Lucia, Gabriella, ...
We present a study of large-scale bars in field and cluster environments out to redshifts of ~0.8 using a final sample of 945 moderately inclined disk galaxies drawn from the EDisCS project. We...
Hopkins, Philip F., Somerville, Rachel S., Cox, Thomas J., Hernquist, Lars, Jogee, Shardha, Keres, Dusan, ...
Transformation of disks into spheroids via mergers is a well-accepted element of galaxy formation models. However, recent simulations have shown that bulge formation is suppressed in increasingly...
Wolf, Christian, Aragon-Salamanca, Alfonso, Balogh, Michael, Barden, Marco, Bell, Eric F., Gray, Meghan E., ...
We investigate the properties of optically passive spirals and dusty red galaxies in the A901/2 cluster complex at redshift ~0.17 using restframe near-UV-optical SEDs, 24 micron IR data and HST...
STAGES: the Space Telescope A901/2 Galaxy Evolution Survey (2008)
Gray, M. E., Wolf, Christian, Barden, Marco, Peng, Chien Y., Haeussler, Boris, Bell, Eric F., ...
We present an overview of the Space Telescope A901/2 Galaxy Evolution Survey (STAGES). STAGES is a multiwavelength project designed to probe physical drivers of galaxy evolution across a wide range...
Galaxy Interactions, Star Formation History, and Bulgeless Galaxies (2008)
Hierarchical Lambda CDM models provide a successful paradigm for the growth of dark matter on large scales, but they face important challenges in predicting how the baryonic components of galaxies...
Weinzirl, Tim, Jogee, Shardha, Khochfar, Sadegh, Burkert, Andreas, Kormendy, John
We use the bulge Sersic index n and bulge-to-total ratio (B/T) to explore the fundamental question of how bulges form. We perform 2D bulge-disk-bar decomposition on H-band images of 143 bright, high...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry, Puzia, Thomas, Aguerri, Alfonso, ...
Also archived in: arXiv:0801.3745 v1 Jan 24 2008
Bars in Local Galaxies: Evidence for a higher Optical Bar Fraction in Disk-Dominated Galaxies (2008)
Barazza, Fabio D., Jogee, Shardha, Marinova, Irina
We present a study of large-scale bars in the local Universe, based on a large sample of ~3692 galaxies, with -18.5 =0.4) and large enough (semi-major axis >=1.5 kpc) to be reliably characterized via...
Constraining Galaxy Evolution With Bulge-Disk-Bar Decomposition (2008)
Weinzirl, Tim, Jogee, Shardha, Barazza, Fabio D.
Structural decomposition of galaxies into bulge, disk, and bar components is important to address a number of scientific problems. Measuring bulge, disk, and bar structural parameters will set...
The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design (2008)
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma cluster (Abell 1656). The survey was designed to...
Heymans, Catherine, Gray, Meghan E., Peng, Chien Y., Van Waerbeke, Ludovic, Bell, Eric F., Wolf, Christian, ...
We present a high resolution dark matter reconstruction of the z=0.165 Abell 901/902 supercluster from a weak lensing analysis of the HST STAGES survey. We detect the four main structures of the...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
An explanation for the observed weak size evolution of disk galaxies (2008)
Somerville, Rachel S., Barden, Marco, Rix, Hans-Walter, Bell, Eric F., Beckwith, Steven V. W., Borch, Andrea, ...
Surveys of distant galaxies with the Hubble Space Telescope and from the ground have shown that there is only mild evolution in the relationship between radial size and stellar mass for galactic...
Heymans, Catherine, Gray, Meghan E., Peng, Chien Y., Van Waerbeke, Ludovic, Bell, Eric F., Wolf, Christian, ...
We present a high-resolution dark matter reconstruction of the z = 0.165 Abell 901/902 supercluster from a weak lensing analysis of the Hubble Space Telescope STAGES survey. We detect the four main...
GEMS survey data and catalog (2008)
Caldwell, John A. R., McIntosh, Daniel H., Rix, Hans-Walter, Barden, Marco, Beckwith, Steven V. W., Bell, Eric F., ...
We describe the data reduction and object cataloging for the GEMS survey, a large-area (800 arcmin2) two-band (F606W and F850LP) imaging survey with the Advanced Camera for Surveys on the Hubble...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
Barazza, Fabio D., Jogee, Shardha, Marinova, Irina
We present a study of large-scale bars in the local Universe, based on a large sample of ~3692 galaxies, with -18.5 =~0.4) that studies out to z~1 apply to ensure a complete sample, adequate spatial...
GEMS: Galaxy fitting catalogues and testing parametric galaxy fitting codes (2007)
Ler, Boris Häu\ss, McIntosh, Daniel H., Barden, Marco, Bell, Eric F., Rix, Hans-Walter, Borch, Andrea, ...
In the context of measuring structure and morphology of intermediate redshift galaxies with recent HST/ACS surveys, we tune, test, and compare two widely used fitting codes (GALFIT and GIM2D) for...
GEMS: galaxy fitting catalogs and testing parametric galaxy fitting codes: GALFIT and GIM2D (2007)
Häußler, Boris, McIntosh, Daniel H., Barden, Marco, Bell, Eric F., Rix, Hans-Walter, Borch, Andrea, ...
In the context of measuring the structures of intermediate-redshift galaxies with HST ACS surveys, we tune, test, and compare two widely used fitting codes (GALFIT and GIM2D) for fitting...
GEMS: the destiny of blue spheroidal galaxies (2007)
Häußler, Boris, Bell, Eric F., Barden, Marco, McIntosh, Daniel H., Rix, Hans-Walter, Borch, Andrea, ...
Not Available
An Explanation for the Observed Weak Size Evolution of Disk Galaxies (2006)
Somerville, Rachel S., Barden, Marco, Rix, Hans-Walter, Bell, Eric F., Beckwith, Steven V. W., Borch, Andrea, ...
Surveys of distant galaxies with the Hubble Space Telescope and from the ground have shown that there is only mild evolution in the relationship between radial size and stellar mass for galactic...
Constraints on Bars in the Local Universe from 5000 SDSS Galaxies (2006)
Barazza, Fabio D., Jogee, Shardha, Marinova, Irina
We present the first study of bars in the local Universe, based on the Sloan Digitized Sky Survey (SDSS). The large sample of ~5000 local galaxies provides the largest study to date of local bars and...
Marinova, Irina, Jogee, Shardha
Critical insights on galaxy evolution stem from the study of bars. With the advent of HST surveys that trace bars in the rest-frame optical out to z~1, it is critical to provide a reference baseline...
The Hubble Ultra Deep Field (2006)
Beckwith, Steven V. W., Stiavelli, Massimo, Koekemoer, Anton M., Caldwell, John A. R., Ferguson, Henry C., Hook, Richard, ...
This paper presents the Hubble Ultra Deep Field (HUDF), a one million second exposure of an 11 square minute-of-arc region in the southern sky with the Hubble Space Telescope. The exposure time was...
Heymans, Catherine, Bell, Eric F., Rix, Hans-Walter, Barden, Marco, Borch, Andrea, Caldwell, John A. R., ...
We present constraints on the evolution of the virial to stellar mass ratio of galaxies with high stellar masses in the redshift range 0.2
Barazza, Fabio D., Jogee, Shardha, Rix, Hans-Walter, Barden, Marco, Bell, Eric F., Caldwell, John A. R., ...
We present a study of the colors, structural properties, and star formation histories for a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant...
Heymans, Catherine, Bell, Eric F., Rix, Hans-Walter, Barden, Marco, Borch, Andrea, Caldwell, John A. R., ...
We present constraints on the evolution of the virial to stellar mass ratio of galaxies with high stellar masses in the redshift range 0.2 < z < 0.8, by comparing weak lensing measurements of virial...
Dry mergers in GEMS: The dynamical evolution of massive early-type galaxies (2006)
Bell, Eric F., Naab, Thorsten, McIntosh, Daniel H., Somerville, Rachel S., Caldwell, John A. R., Barden, Marco, ...
We have used the 28'×28' Hubble Space Telescope image mosaic from the GEMS (Galaxy Evolution from Morphology and SEDs) survey in conjunction with the COMBO-17 photometric redshift survey to...
The Hubble Ultra Deep Field (2006)
Beckwith, Steven V. W., Stiavelli, Massimo, Koekemoer, Anton M., Caldwell, John A. R., Ferguson, Henry C., Hook, Richard, ...
This paper presents the Hubble Ultra Deep Field (HUDF), a 1 million s exposure of an 11 arcmin2 region in the southern sky with the Advanced Camera for Surveys on the Hubble Space Telescope using...
Barazza, Fabio D., Jogee, Shardha, Rix, Hans-Walter, Barden, Marco, Bell, Eric F., Caldwell, John A. R., ...
We present a study of the colors, structural properties, and star formation histories for a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant...
Studying distant dwarf galaxies with GEMS and SDSS (2005)
Barazza, Fabio D., Jogee, Shardha, Rix, Hans-Walter, Barden, Marco, Bell, Eric F., Caldwell, John A. R., ...
We study the colors, structural properties, and star formation histories of a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant dwarfs drawn...
Dry Mergers in GEMS: The Dynamical Evolution of Massive Early-Type Galaxies (2005)
Bell, Eric F., Naab, Thorsten, McIntosh, Daniel H., Somerville, Rachel S., Caldwell, John A. R., Barden, Marco, ...
We have used the 28'x 28' HST image mosaic from the GEMS (Galaxy Evolution from Morphology and SEDs) survey in conjunction with the COMBO-17 photometric redshift survey to constrain the incidence of...
Evolution of Field Dwarf Galaxies with GEMS (2005)
Barazza, Fabio D., Jogee, Shardha
We present a study of the evolution of late-type field dwarfs over the last ~ 1.9 Gyr, based on HST ACS observations carried out as part of the GEMS survey. This study is amongst the first to probe...
GEMS: The Size Evolution of Disk Galaxies (2005)
Barden, Marco, Rix, Hans-Walter, Somerville, Rachel S., Bell, Eric F., Haeussler, Boris, Peng, Chien Y., ...
We combine HST imaging from the GEMS survey with photometric redshifts from COMBO-17 to explore the evolution of disk-dominated galaxies since z
Stellar Bar Evolution in Cuspy and Flat-Cored Triaxial CDM Halos (2005)
Berentzen, Ingo, Shlosman, Isaac, Jogee, Shardha
We analyze the evolution of stellar bars in galactic disks in mildly triaxial flat-core and cuspy CDM halos. We use tailored simulations of rigid and live halos which include the feedback from...
McIntosh, Daniel H., Bell, Eric F., Rix, Hans-Walter, Wolf, Christian, Heymans, Catherine, Peng, Chien Y., ...
We combine imaging from the Hubble Space Telescope Advanced Camera for Surveys, as part of the GEMS (Galaxy Evolution from Morphologies and SEDs) survey, with redshifts and rest-frame quantities from...
Cosmological weak lensing with the HST GEMS survey (2005)
Heymans, Catherine, Brown, Michael L., Barden, Marco, Caldwell, John A. R., Jahnke, Knud, Peng, Chien Y., ...
We present our cosmic shear analysis of GEMS, one of the largest wide-field surveys ever undertaken by the Hubble Space Telescope. Imaged with the Advanced Camera for Surveys (ACS), GEMS spans 795...
GEMS: The surface brightness and surface mass density evolution of disk galaxies (2005)
Barden, Marco, Rix, Hans-Walter, Somerville, Rachel S., Bell, Eric F., Häußler, Boris, Peng, Chien Y., ...
We combine HST imaging from the GEMS (Galaxy Evolution from Morphologies and SEDs) survey with photometric redshifts from COMBO-17 to explore the evolution of disk-dominated galaxies since z
McIntosh, Daniel H., Bell, Eric F., Rix, Hans-Walter, Wolf, Christian, Heymans, Catherine, Peng, Chien Y., ...
We combine HST/ACS imaging from the GEMS survey with redshifts and rest-frame quantities from COMBO-17 to study the evolution of morphologically early-type galaxies with red colors since z=1. We use...
Cosmological weak lensing with the HST GEMS survey (2004)
Heymans, Catherine, Brown, Michael L., Barden, Marco, Caldwell, John A. R., Jahnke, Knud, Peng, Chien Y., ...
We present our cosmic shear analysis of GEMS, one of the largest wide-field surveys ever undertaken by the Hubble Space Telescope. Imaged with the Advanced Camera for Surveys (ACS), GEMS spans 795...
The Fueling and Evolution of AGN: Internal and External Triggers (2004)
In this chapter, I review the fueling and evolution of active galactic nuclei (AGN) under the influence of internal and external triggers, namely intrinsic properties of host galaxies (morphological...
Jogee, Shardha, Scoville, Nick Z., Kenney, Jeffrey D. P.
Despite compelling evidence that stellar bars drive gas into the inner 1--2 kpc or circumnuclear (CN) region of galaxies, there are few large, high resolution studies of the CN molecular gas and star...
GEMS: Galaxy Evolution from Morphologies and SEDs (2004)
Rix, Hans-Walter, Barden, Marco, Beckwith, Steven V. W., Bell, Eric F., Caldwell, John A. R., Haeussler, Boris, ...
GEMS, Galaxy Evolution from Morphologies and SEDs, is a large-area (800 arcmin2) two-color (F606W and F850LP) imaging survey with the Advanced Camera for Surveys on HST. Centered on the Chandra Deep...
GEMS: Galaxy evolution from morphologies and SEDs (2004)
Rix, Hans-Walter, Barden, Marco, Beckwith, Steven V. W., Bell, Eric F., Borch, Andrea, Caldwell, John A. R., ...
GEMS (Galaxy Evolution from Morphologies and SEDs) is a large-area (800 arcmin2) two-color (F606W and F850LP) imaging survey with the Advanced Camera for Surveys on the Hubble Space Telescope....
GEMS imaging of red-sequence galaxies at z~0.7: Dusty or old? (2004)
Bell, Eric F., McIntosh, Daniel H., Barden, Marco, Wolf, Christian, Caldwell, John A. R., Rix, Hans-Walter, ...
We have used the 30'times;30' Hubble Space Telescope image mosaic from the Galaxy Evolution from Morphology and Spectral energy distributions (GEMS) project in conjunction with the COMBO-17 deep...
Jogee, Shardha, Barazza, Fabio D., Rix, Hans-Walter, Shlosman, Isaac, Barden, Marco, Wolf, Christian, ...
One-third of present-day spirals host optically visible strong bars that drive their dynamical evolution. However, the fundamental question of how bars evolve over cosmological times has yet to be...
Structure and Evolution of Starburst and Normal Galaxies (2003)
Mobasher, Bahram, Jogee, Shardha, Dahlen, Tomas, De Mello, Duilia, Conselice, Christopher, Grogin, Norman, ...
We study the rest-frame morphology and structural properties of optically selected starburst galaxies at redshift z < 1, using multi-waveband (BViz) high resolution images taken by the Advanced...
Observing the Formation of the Hubble Sequence in the Great Observatories Origins Deep Survey (2003)
Conselice, Christopher J., Grogin, Norman A., Jogee, Shardha, Lucas, Ray A., Dahlen, Tomas, De Mello, Duilia, ...
Understanding the physical formation of the Hubble sequence remains one of the most important unsolved astrophysical problems. Searches for proto-disks and proto-ellipticals can now be effectively...
Bar-driven disk evolution : grand-design nuclear spirals (2003)
Jogee, Shardha, Shlosman, Isaac, Laine, Seppo, Englmaier, Peter, Knapen, Johan H., Scoville, Nick Z., ...
Structure and evolution of bars at intermediate redshifts (2003)
Jogee, Shardha, Conselice, Chris, Knapen, Johan H., Shlosman, Isaac, Ravindranath, Swara, Barden, Marco, ...
Tidal interactions, mergers, and starburst activity from Z=0 (2003)
Jogee, Shardha, Barden, Marco, Beckwith, Steven, Bell, Eric, Borsch, Andrea, Caldwell, John, ...
Fitting 20,000 galaxies: Galfit meets GEMS (2003)
Häußler, Boris, Rix, Hans-Walter, Beckwith, Steven, Barden, Marco, Bell, Eric, Borch, Andrea, ...
GEMS: The evolution of disc sizes over the last 10 Gyrs (2003)
Barden, Marco, Haeussler, Boris, Rix, Hans-Walter, Bell, Eric, Borch, Andrea, Meisenheimer, Klaus, ...
Gas Dynamics in NGC 5248: Fueling a Circumnuclear Starburst Ring of Super Star Clusters (2002)
Jogee, Shardha, Shlosman, Isaac, Laine, Seppo, Englmaier, Peter, Knapen, Johan H., Scoville, Nick Z., ...
Through observations and modeling, we demonstrate how the recently discovered large-scale bar in NGC 5248 generates spiral structure which extends from 10 kpc down to 100 pc, fuels star formation on...
Discovery and Implications of a New Large-Scale Stellar Bar in NGC 5248 (2002)
Jogee, Shardha, Knapen, Johan H., Laine, Seppo, Shlosman, Isaac, Scoville, Nick Z., Englmaier, Peter
For decades, the grand-design SAB spiral galaxy NGC 5248 has been postulated to host a short bar of semi-major axis 22" (1.6 kpc). From dynamical and morphological arguments, we argue, however, that...
Molecular Gas in The Central Kpc of Starbursts and AGN (2002)
Jogee, Shardha, Baker, Andrew J., Sakamoto, Kazushi, Scoville, Nick Z., Kenney, Jeffrey D. P.
With the recent advent of large interferometric surveys, we can now probe the physical conditions, dynamics, and star-forming properties of molecular gas in the central kpc of starbursts and active...
Discovery and implications of a new large-scale stellar bar in NGC 5248 (2002)
Jogee, Shardha, Knapen, Johan H., Laine, Seppo, Shlosman, Isaac, Scoville, Nick Z., Englmaier, Peter
For decades, the grand-design SAB spiral galaxy NGC 5248 has been postulated to host a short bar of semimajor axis 22" (1.6 kpc). From dynamical and morphological arguments, however, we argue that...
Gasdynamics in NGC 5248: Fueling a circumnuclear starburst ring of super-star clusters (2002)
Jogee, Shardha, Shlosman, Isaac, Laine, Seppo, Englmaier, Peter, Knapen, Johan H., Scoville, Nick, ...
Through observations and modeling, we demonstrate how the recently discovered large-scale bar in NGC 5248 generates spiral structure that extends from 10 kpc down to 100 pc, fuels star formation on...
A gas-rich nuclear bar fuelling a powerful central starburst in NGC 2782 (1999)
Jogee, Shardha, Kenney, Jeffrey D. P., Smith, Beverly J.
We present evidence that the peculiar interacting starburst galaxy NGC 2782 (Arp 215) harbors a gas-rich nuclear stellar bar feeding an M82-class powerful central starburst, from a study based on...
Molecular gas and star formation in the inner kpc of starbursts and non-starbursts / (1999)
Thesis (Ph. D.)--Yale University, 1999.
The Molecule-Rich Tail of the Peculiar Galaxy NGC 2782 (Arp 215) (1998)
Smith, Beverly J., Struck, Curtis, Kenney, Jeffrey D. P., Jogee, Shardha
We present the first detection of a large quantity of molecular gas in the extended tail of an interacting galaxy. Using the NRAO 12m telescope, we have detected CO (1 - 0) at five locations in the...
The remarkable starburst-driven outflow in NGC 2782 (1997)
Jogee, Shardha, Kenney, Jeffrey D. P., Smith, Beverly J.
We show that the starburst-driven outflow in the peculiar galaxy NGC 2782 forms a well-defined collimated bubble which has an extent of $\sim$ 1 kpc and a closed shell at its edge, as seen in...