Mid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies (2009)
Walker, Lisa May, Johnson, Kelsey E., Gallagher, Sarah C., Hibbard, John E., Hornschemeier, Ann E., Charlton, Jane C., ...
We find evidence for accelerated evolution in compact group galaxies from the distribution in mid-infrared colorspace of 42 galaxies from 12 Hickson Compact Groups (HCGs) compared to the the...
A Deep VLA Radio Continuum Study of the Core and Outskirts of the Coma Cluster (2009)
Miller, Neal A., Hornschemeier, Ann E., Mobasher, Bahram
We present deep 1.4GHz Very Large Array (VLA) radio continuum observations of two ~half square degree fields in the Coma cluster of galaxies. The two fields, "Coma 1" and "Coma 3," correspond to the...
The Radio Luminosity Function and Galaxy Evolution in the Coma Cluster (2009)
Miller, Neal A., Hornschemeier, Ann E., Mobasher, Bahram, Bridges, Terry J., Hudson, Michael J., Marzke, Ronald O., ...
We investigate the radio luminosity function (RLF) and radio source population for two fields within the Coma cluster of galaxies. Our VLA data reach down to log(L) = 20.23 W/Hz for Coma, and we...
Smith, Russell J., Lucey, John R., Hudson, Michael J., Allanson, Steven P., Bridges, Terry J., Hornschemeier, Ann E., ...
We investigate the stellar populations in a sample of 89 faint (M*+2 to M*+4) red galaxies in the Coma cluster, using high S/N spectroscopy from the MMT. Our sample is drawn from two 1-degree fields,...
Smith, Russell J., Marzke, Ronald O., Hornschemeier, Ann E., Bridges, Terry J., Hudson, Michael J., Miller, Neal A., ...
We analyse the stellar populations of 75 red-sequence dwarf galaxies in the Coma cluster, based on high signal-to-noise spectroscopy from the 6.5m MMT. The sample covers a luminosity range 3-4...
The Infrared Properties of Hickson Compact Groups (2007)
Johnson, Kelsey E., Hibbard, John E., Gallagher, Sarah C., Charlton, Jane C., Hornschemeier, Ann E., Jarrett, Thomas H., ...
Compact groups of galaxies provide a unique environment to study the mechanisms by which star formation occurs amid continuous gravitational encounters. We present 2MASS (JHK) and Spitzer IRAC (3.5-8...
Vazquez, Gerardo A., Hornschemeier, Ann E., Colbert, Edward, Roberts, Tymothy P., Ward, Martin J., Malhotra, Sangeeta
Constraining the astrophysical nature of Ultra-Luminous X-ray (ULX) sources, which have X-ray luminosities exceeding 10^39 erg/s, has been elusive due to the optical faintness of any counterparts....
The Challenge to Large Optical Telescopes from X-ray Astronomy (2002)
In the ROSAT era of the mid-1990's, the problems facing deep X-ray surveys could be largely solved with 10 m class telescopes. In the first decade of this new millennium, with X-ray telescopes such...
The 1 Ms Chandra Survey of the HDF-N: Populations at the Faintest X-ray Fluxes (2001)
Hornschemeier, Ann E., Team, CDF-N
The Chandra Deep Field-North survey, which has at its center the Hubble Deep Field-North, has reached an exposure of 1 Ms and is now available to the public for analysis. This great astronomical...