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First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151
Misty C. Bentz, Jonelle L. Walsh, Aaron J. Barth +24
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 ne…
The type IIb SN 2008ax: spectral and light curve evolution
A. Pastorello, M. M. Kasliwal, R. M. Crockett +12
We present spectroscopy and photometry of the He-rich supernova (SN) 2008ax. The early-time spectra show prominent P-Cygni H lines, which decrease with time and disappear completel…
Mid-Infrared Spectra of High Redshift (z>2) Radio Galaxies
N. Seymour, P. Ogle, C. De Breuck +8
We present the first mid-infrared Spitzer/Infrared Spectrograph (IRS) observations of powerful radio galaxies at z>2. These radio galaxies, 4C +23.56 (z=2.48) and 6C J1908+7220 (z=…
A Large Population of High Redshift Galaxy Clusters in the IRAC Shallow Cluster Survey
Mark Brodwin, Peter R. Eisenhardt, Anthony H. Gonzalez +6
We have identified 335 galaxy cluster and group candidates spanning 0<z<2, using a 4.5um selected sample of galaxies in a 7.25 deg^2 region in the Spitzer/IRAC Shallow Survey. Usin…
Radio-loud high-redshift protogalaxy candidates in Bootes
Steve Croft, Wil van Breugel, Michael J. I. Brown +8
We used the Near Infrared Camera on Keck I to obtain Ks-band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field…
Redshift Distribution of Extragalactic 24 micron Sources
Vandana Desai, B. T. Soifer, Arjun Dey +10
We present the redshift distribution of a complete, unbiased sample of 24 micron sources down to fnu(24 micron) = 300 uJy (5-sigma). The sample consists of 591 sources detected in…