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136 papers · 1 filter
Measuring Stellar Velocity Dispersions in Active Galaxies
Jenny E. Greene, Luis C. Ho
(ABRIDGED) We present stellar velocity dispersion (sigma*) measurements for a significant sample of 40 broad-line (Type 1) active galaxies for use in testing the well-known relatio…
The M-sigma Relation in Local Active Galaxies
Jenny E. Greene, Luis C. Ho
We examine whether active galaxies obey the same relation between black hole mass and stellar velocity dispersion as inactive systems, using the largest published sample of velocit…
Spectroscopy of GRB 051111 at z=1.54948: Kinematics and Elemental Abundances of the GRB Environment and Host Galaxy
B. E. Penprase, E. Berger, D. B. Fox +8
We present a high-resolution, high signal-to-noise optical spectrum of the afterglow of GRB 051111 obtained with the HIRES spectrograph on the Keck I 10-m telescope. The spectrum e…
Chemical Compositions of Red Giant Stars in Old Large Magellanic Cloud Globular Clusters
Jennifer A. Johnson, Inese I. Ivans, Peter B. Stetson
We have observed ten red giant stars in four old Large Magellanic Cloud globular clusters with the high-resolution spectrograph MIKE on the Magellan Landon Clay 6.5-m telescope. Th…
The Carnegie Supernova Project: The Low-Redshift Survey
Mario Hamuy, Gastón Folatelli, Nidia I. Morrell +15
Supernovae are essential to understanding the chemical evolution of the Universe. Type Ia supernovae also provide the most powerful observational tool currently available for study…
The Smallest AGN Host Galaxies
J. E. Greene, A. J. Barth, L. C. Ho
We describe our efforts to study dwarf galaxies with active nuclei, whose black holes, with masses < 10^6 M_sun, provide the best current observational constraints on the mass dist…