6 papers · 1 filter
Detecting Obscured AGN in the Distant Universe with Spitzer
J. L. Donley, G. H. Rieke, P. G. Perez-Gonzalez +2
We present the results of a Spitzer search for obscured AGN in the Chandra Deep Field-North, using both radio-excess and mid-infrared power-law selection. AGN selected via the form…
Studying Distant Infrared-Luminous Galaxies with Spitzer and Hubble
Casey Papovich, Eiichi Egami, Emeric Le Floc'h +5
New surveys with the Spitzer space telescope identify distant star-forming and active galaxies by their strong emission at far-infrared wavelengths, which provides strong constrain…
24 micron Properties of X-ray Selected AGN
J. R. Rigby, G. H. Rieke, R. Maiolino +13
We examine the 24 micron to X-ray color of 157 X-ray--selected AGN as a function of X-ray obscuration and optical classification in the Chandra Deep Field South. The sample consist…
On the Utter Irrelevance of LPL Graduate Students: An Unbiased Survey by Steward Observatory Graduate Students
J. J. Charfman, J. B. Bsc, K. A. Eriksen +8
We present a new analysis of the irrelevance of Lunar and Planetary Laboratory (LPL) graduate students at the University of Arizona. Based on extensive Monte Carlo simulations we f…
Millions of Single Cloud Weak MgII Systems
Chris Churchill, Jane Rigby, Jane Charlton
We report on a population of absorption systems selected by the presence of very weak Mg II doublets. A sub-population of these systems are iron enriched and have near solar metall…
Phase Structure of Weak MgII Absorbers: Star Forming Pockets Outside of Galaxies
Jane C. Charlton, Christopher W. Churchill, Jie Ding +3
A new and mysterious class of object has been revealed by the detection of numerous weak MgII doublets in quasar absorption line spectra. The properties of these objects will be re…