Walsh, Jonelle L., Minezaki, Takeo, Bentz, Misty C., Barth, Aaron J., Baliber, Nairn, Li, Weidong, ...
The Lick AGN Monitoring Project targeted 13 nearby Seyfert 1 galaxies with the intent of measuring the masses of their central black holes using reverberation mapping. The sample includes 12 galaxies...
Bentz, Misty C., Walsh, Jonelle L., Barth, Aaron J., Baliber, Nairn, Bennert, Nicola, Canalizo, Gabriela, ...
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 12 nearby (z < 0.05)...
The Growth of Black Holes: Insights From Obscured Active Galaxies (2009)
Greene, Jenny E., Zakamska, Nadia L., Liu, Xin, Barth, Aaron J., Ho, Luis C.
Obscured or narrow-line active galaxies offer an unobstructed view of the quasar environment in the presence of a luminous and vigorously accreting black hole. We exploit the large new sample of...
Probing Stellar Dynamics in Galactic Nuclei (2009)
Miller, M. Coleman, Alexander, Tal, Amaro-Seoane, Pau, Barth, Aaron J., Cutler, Curt, Gair, Jonathan R., ...
Electromagnetic observations over the last 15 years have yielded a growing appreciation for the importance of supermassive black holes (SMBH) to the evolution of galaxies, and for the intricacies of...
First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151 (2008)
Bentz, Misty C., Walsh, Jonelle L., Barth, Aaron J., Baliber, Nairn, Bennert, Nicola, Canalizo, Gabriela, ...
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 13 nearby (z < 0.05)...
Greene, Jenny E., Ho, Luis C., Barth, Aaron J.
We investigate the relationship between black hole mass and host galaxy properties for active galaxies with the lowest black hole masses currently known in galaxy nuclei. Hubble Space Telescope...
Walsh, Jonelle L., Barth, Aaron J., Ho, Luis C., Filippenko, Alexei V., Rix, Hans-Walter, Shields, Joseph C., ...
We present Space Telescope Imaging Spectrograph observations of 14 nearby low-luminosity active galactic nuclei, including 13 LINERs and 1 Seyfert, taken at multiple parallel slit positions centered...
Walsh, Jonelle L., Barth, Aaron J., Ho, Luis C., Filippenko, Alexei V., Rix, Hans-Walter, Shields, Joseph C., ...
(Abridged) We present STIS observations of 14 nearby low-luminosity active galactic nuclei, including 13 LINERs and 1 Seyfert, taken at multiple parallel slit positions centered on the galaxy nuclei...
Kim, Minjin, Ho, Luis C., Peng, Chien Y., Barth, Aaron J., Im, Myungshin
Investigating the link between supermassive black hole and galaxy evolution requires careful measurements of the properties of the host galaxies. We perform simulations to test the reliability of a...
Kim, Minjin, Ho, Luis C., Peng, Chien Y., Barth, Aaron J., Im, Myungshin, Martini, Paul, ...
We investigate the origin of the intrinsic scatter in the correlation between black hole mass (MBH) and bulge luminosity [L(bulge)] in a sample of 45 massive, local (z < 0.35) type~1 active galactic...
Smith, Nathan, Chornock, Ryan, Li, Weidong, Ganeshalingam, Mohan, Silverman, Jeffrey M., Foley, Ryan J., ...
SN2006tf is the third most luminous SN discovered so far, after SN2005ap and SN2006gy. SN2006tf is valuable because it provides a link between two regimes: (1) luminous type IIn supernovae powered by...
Walsh, Jonelle L., Barth, Aaron J., Ho, Luis C., Filippenko, Alexei V., Rix, Hans-Walter, Shields, Joseph C., ...
We present Space Telescope Imaging Spectrograph observations of 14 nearby low-luminosity active galactic nuclei, including 13 LINERs and 1 Seyfert, taken at multiple parallel slit positions centered...
The Dual-Axis Circumstellar Environment of the Type IIn Supernova 1997eg (2007)
Hoffman, Jennifer L., Leonard, Douglas C., Chornock, Ryan, Filippenko, Alexei V., Barth, Aaron J., Matheson, Thomas
We present multi-epoch spectral and spectropolarimetric observations of the Type IIn supernova (SN) 1997eg that indicate the presence of a flattened disk-like concentration of circumstellar material...
Moran, Edward C., Barth, Aaron J., Eracleous, Michael, Kay, Laura E.
We have discovered an extremely broad, double-peaked H-alpha emission line in the polarized flux spectrum of NGC 2110, establishing that this well-studied Seyfert 2 galaxy contains a disk-like hidden...
Serendipitous XMM-Newton discovery of a cluster of galaxies at z=0.28 (2007)
Gastaldello, Fabio, Buote, David A., Humphrey, Philip J., Zappacosta, Luca, Seigar, Marc S., Barth, Aaron J., ...
We report the discovery of a galaxy cluster serendipitously detected as an extended X-ray source in an offset observation of the group NGC 5044. The cluster redshift, z=0.281, determined from the...
Shields, Joseph C., Rix, Hans-Walter, Sarzi, Marc, Barth, Aaron J., Filippenko, Alexei V., Ho, Luis C., ...
We present results from a program of optical spectroscopy for 23 nearby galaxies with emission-line nuclei. This investigation takes advantage of the spatial resolution of the Hubble Space Telescope...
A Revised LCDM Mass Model For The Andromeda Galaxy (2006)
Seigar, Marc S., Barth, Aaron J., Bullock, James S.
We present an updated mass model for M31 that makes use of a Spitzer 3.6 $\mu$m image, a mass-to-light ratio gradient based on the galaxy's B-R colour profile, and observed rotation curve data from a...
Temporal Variation in Excited Fe^+ Near a GRB Afterglow (2006)
Dessauges-Zavadsky, Miroslava, Chen, Hsiao-Wen, Prochaska, Jason X., Bloom, Joshua S., Barth, Aaron J.
Excited Si^+ and Fe^+ species are routinely observed in the host environment of gamma-ray burst (GRB) afterglows, but are not commonly seen in other extragalactic locations. Their presence signals...
Seigar, Marc S., Bullock, James S., Barth, Aaron J., Ho, Luis C.
We investigate the use of spiral arm pitch angles as a probe of disk galaxy mass profiles. We confirm our previous result that spiral arm pitch angles (P) are well-correlated with the rate of shear...
Laor, Ari, Barth, Aaron J., Ho, Luis C., Filippenko, Alexei V.
The origin and configuration of the gas which emits broad lines in Type I active galactic nuclei is not established yet. The lack of small-scale structure in the broad emission-line profiles is...
Seigar, Marc S., Barth, Aaron J., Bullock, James, Ho, Luis C.
Recently, it has been shown that a correlation exists between the rate of shear and the spiral arm pitch angle in disk galaxies. The rate of shear depends upon the shape of the rotation curve, which...
The stellar populations in the central parsecs of galactic bulges (2005)
Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., Ho, Luis C., Barth, Aaron J., Rudnick, Gregory, ...
The stellar populations in the central Parsecs of galactic bulges (2005)
Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., Ho, Luis C., Barth, Aaron J., Rudnick, Gregory, ...
We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to have nebular emission in their nuclei and...
Shields, Joseph C., Rix, Hans-Walter, Sarzi, Marc, Barth, Aaron J., Filippenko, Alexei V., Ho, Luis C., ...
We present results from a program of optical spectroscopy for 23 nearby galaxy emission-line nuclei. This investigation takes advantage of the spatial resolution of the Hubble Space Telescope to...
The Stellar Populations in the Central Parsecs of Galactic Bulges Central Stellar Populations (2004)
Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., Ho, Luis C., Barth, Aaron J., Rudnick, Gregory, ...
We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to have nebular emission in their nuclei, and...
SN 1994W: evidence of explosive mass ejection a few years before explosion (2003)
Chugai, Nikolai N., Cumming, Robert J., Blinnikov, Sergei I., Lundqvist, Peter, Filippenko, Alexei V., Barth, Aaron J., ...
We present and analyse spectra of the Type IIn supernova 1994W obtained between 18 and 202 days after explosion. During the first 100 days the line profiles are composed of three major components:...
Limits on the Mass of the Central Black Hole in 16 Nearby Bulges (2002)
Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., McIntosh, Daniel H., Ho, Luis C., Rudnick, Gregory, ...
Ho, Luis C., Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., Rudnick, Greg, Filippenko, Alexei V., ...
Ho, Luis C., Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., Rudnick, Greg, Filippenko, Alexei V., ...
Gas-dynamical studies using the Hubble Space Telescope are an integral component for future progress in the search for massive black holes in galactic nuclei. Here we present an extensive set of gas...
Measuring Black Hole Masses Using Ionized Gas Kinematics (2001)
Barth, Aaron J., Sarzi, Marc, Ho, Luis C., Rix, Hans-Walter, Shields, Joseph C., Filippenko, Alexei V., ...
We describe techniques for measuring the central masses of galaxies using emission-line kinematics observed with the Hubble Space Telescope. For accurate results, it is necessary to model various...
Limits on the Mass of the Central Black Hole in 16 Nearby Bulges (2001)
Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C., McIntosh, Daniel H., Ho, Luis C., Rudnick, Greg, ...
We report upper limits on the masses of black holes that can be present in the centers of 16 nearby galaxy bulges. These limits for our statistically complete sample were derived from the modeling of...
The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method (2001)
Leonard, Douglas C., Filippenko, Alexei V., Gates, Elinor L., Li, Weidong, Eastman, Ronald G., Barth, Aaron J., ...
We present 30 optical spectra and 49 photometric epochs sampling the first 517 days after discovery of supernova (SN) 1999em, and derive its distance through the expanding photosphere method (EPM)....
Fransson, Claes, Chevalier, Roger A., Filippenko, Alexei V., Leibundgut, Bruno, Barth, Aaron J., Fesen, Robert A., ...
Optical and ultraviolet observations of the Type IIn supernova 1995N at epochs between 321 and 1799 days after the explosion show three distinct velocity components. The narrow lines come from...
Moran, Edward C., Kay, Laura E., Davis, Marc, Filippenko, Alexei V., Barth, Aaron J.
We present a composite 1-10 keV Seyfert 2 X-ray spectrum, derived from ASCA observations of a distance-limited sample of nearby galaxies. All 29 observed objects were detected. Above ~3 keV, the...
Maoz, Dan, Barth, Aaron J., Ho, Luis C., Sternberg, Amiel, Filippenko, Alexei V.
We present broad-band (U, V, I,and H) and narrow-band(H-alpha+[N II] and Paschen-alpha) images of the circumnuclear starburst rings in two nearby spiral galaxies, NGC 1512 and NGC 5248, obtained with...
Detailed Analysis of Early to Late-Time Spectra of Supernova 1993J (2000)
Matheson, Thomas, Filippenko, Alexei V., Ho, Luis C., Barth, Aaron J., Leonard, Douglas C.
We present a detailed study of line structure in early to late-time spectra of Supernova (SN) 1993J. Spectra during the nebular phase, but within the first two years after explosion, exhibit...
Evidence for Asphericity in the Type IIn Supernova 1998S (1999)
Leonard, Douglas C., Filippenko, Alexei V., Barth, Aaron J., Matheson, Thomas
We present optical spectropolarimetry obtained at the Keck-II 10-m telescope on 1998 March 7 UT along with total flux spectra spanning the first 494 days after discovery (1998 March 2 UT) of the...
Hubble Space Telescope WFPC2 Imaging of SN 1979C and Its Environment (1998)
Van Dyk, Schuyler D., Peng, Chien Y., Barth, Aaron J., Filippenko, Alexei V., Chevalier, Roger A., Fesen, Robert A., ...
The locations of supernovae in the local stellar and gaseous environment in galaxies contain important clues to their progenitor stars. As part of a program to study the environments of supernovae...
Hubble Space Telescope Ultraviolet Images of Five Circumnuclear Star-Forming Rings (1996)
Maoz, Dan, Barth, Aaron J., Sternberg, Amiel, Filippenko, Alexei V., Ho, Luis C., Macchetto, F. Duccio, ...
We present UV (2300 Ang) images, obtained with the HST Faint Object Camera, of the central 20'' of five galaxies containing circumnuclear star-forming rings. The five galaxies are from a well-defined...