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17 papers · 2 filters
The Sloan Digital Sky Survey Reverberation Mapping Project: Rapid CIV Broad Absorption Line Variability
C. J. Grier, P. B. Hall, W. N. Brandt +22
We report the discovery of rapid variations of a high-velocity CIV broad absorption line trough in the quasar SDSS J141007.74+541203.3. This object was intensively observed in 2014…
Monitoring the temperature and reverberation delay of the circumnuclear hot dust in NGC 4151
K. Schnuelle, J. -U. Pott, H. -W. Rix +3
A hot, dusty torus located around the outer edge of the broad-line region of AGNs is a fundamental ingredient in unified AGN models. While the existence of circumnuclear dust aroun…
Short GMC lifetimes: an observational estimate with the PdBI Arcsecond Whirlpool Survey (PAWS)
Sharon E. Meidt, Annie Hughes, Clare L. Dobbs +10
We describe and execute a novel approach to observationally estimate the lifetimes of giant molecular clouds (GMCs). We focus on the cloud population between the two main spiral ar…
The Relationship between CO Emission and Visual Extinction Traced by Dust Emission in the Magellanic Clouds
Cheoljong Lee, Adam K. Leroy, Scott Schnee +4
To test the theoretical understanding that finding bright CO emission depends primarily on dust shielding, we investigate the relationship between CO emission () and th…
The Sloan Digital Sky Survey Reverberation Mapping Project: No Evidence for Evolution in the M-sigma Relation to z~1
Yue Shen, Jenny E. Greene, Luis C. Ho +16
We present host stellar velocity dispersion measurements for a sample of 88 broad-line quasars at 0.1<z<1 (46 at z>0.6) from the Sloan Digital Sky Survey Reverberation Mapping (SDS…
Spiral Galaxies as Progenitors of Pseudobulge Hosting S0s
Kaustubh Vaghmare, Sudhanshu Barway, Smita Mathur +1
We present observations of pseudobulges in S0 and spiral galaxies using imaging data taken with the Spitzer Infra-Red Array Camera. We have used 2-d bulge-disk-bar decomposition to…