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- Publications
- Influence
The lick agn monitoring project: Broad-line region radii and black hole masses from reverberation mapping of Hβ
- M. Bentz, J. Walsh, +47 authors Research Center for the Early Universe
- Physics
- 31 July 2009
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)… Expand
Identification of a host galaxy at redshift z = 3.42 for the γ-ray burst of 14 December 1997
- S. Kulkarni, S. Djorgovski, +13 authors J. Newman
- Physics
- Nature
- 7 May 1998
Knowledge of the properties of γ-ray bursts has increased substantially following recent detections of counterparts at X-ray, optical and radio wavelengths. But the nature of the underlying physical… Expand
Iron Emission in the z=6.4 Quasar SDSS J114816.64+525150.3
- A. J. Barth, P. Martini, C. Nelson, L. Ho
- Physics
- 31 July 2003
We present near-infrared J- and K-band spectra of the z = 6.4 quasar SDSS J114816.64+525150.3 obtained with the NIRSPEC spectrograph at the Keck II telescope, covering the rest-frame spectral regions… Expand
Closing in on a Short-Hard Burst Progenitor: Constraints from Early-Time Optical Imaging and Spectroscopy of a Possible Host Galaxy of GRB 050509b
- J. Bloom, J. Prochaska, +25 authors W. M. Wood-Vasey
- Physics
- 24 May 2005
The localization of the short-duration, hard-spectrum gamma-ray burst GRB 050509b by the Swift satellite was a watershed event. We report the discovery of the probable host galaxy, a bright… Expand
Optical Spectropolarimetry of the GRB 020813 Afterglow
- A. J. Barth, R. Sari, +6 authors S. Kulkarni
- Physics
- 27 December 2002
The optical afterglow of gamma-ray burst GRB 020813 was observed for 3 hr with the LRIS spectropolarimeter at the Keck I telescope, beginning 4.7 hr after the burst was detected by the HETE-2. The… Expand
POX 52: A DWARF SEYFERT 1 GALAXY WITH AN INTERMEDIATE-MASS BLACK HOLE
- A. J. Barth, L. Ho, R. Rutledge, W. Sargent
- Physics
- 4 February 2004
We describe new optical images and spectra of POX 52, a dwarf galaxy with an active nucleus that was originally detected in the POX objective-prism survey. While POX 52 was originally thought to be a… Expand
The Environments of Supernovae in Post-Refurbishment Hubble Space Telescope Images*
- S. Dyk, C. Peng, A. J. Barth, A. Filippenko
- Physics
- 19 July 1999
The locations of supernovae (SNe) in the local stellar and gaseous environment in galaxies contain important clues to their progenitor stars. Access to this information, however, has been hampered by… Expand
The Type Ic Supernova 1994I in M51: Detection of Helium and Spectral Evolution
- A. Filippenko, A. J. Barth, +18 authors G. Wirth
- Physics
- 1 September 1995
We present a series of spectra of SN 1994I in M51, starting 1 week prior to maximum brightness. The nebular phase began about 2 months after the explosion; together with the rapid decline of the… Expand
Space telescope and optical reverberation mapping project. II. Swift and HST reverberation mapping of the accretion disk of NGC 5548
- R. Edelson, J. M. Gelbord, +47 authors Y. Zu
- Physics
- 23 January 2015
Recent intensive Swift monitoring of the Seyfert 1 galaxy NGC 5548 yielded 282 usable epochs over 125 days across six UV/optical bands and the X-rays. This is the densest extended active galactic… Expand
Early optical emission from the γ-ray burst of 4 October 2002
- D. W. Fox, S. Yost, +18 authors H. Buttery
- Physics
- Nature
- 20 March 2003
Observations of the long-lived emission—or ‘afterglow’—of long-duration γ-ray bursts place them at cosmological distances, but the origin of these energetic explosions remains a mystery. Observations… Expand