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Inspiralling Supermassive Black Holes: A New Signpost for Galaxy Mergers
Julia M. Comerford, Brian F. Gerke, Jeffrey A. Newman +8
We present a new technique for observationally identifying galaxy mergers spectroscopically rather than through host galaxy imaging. Our technique exploits the dynamics of supermas…
The DEEP2 Galaxy Redshift Survey: Environments of Poststarburst Galaxies at z~0.1 and z~0.8
Renbin Yan, Jeffrey A. Newman, S. M. Faber +6
Postststarburst (K+A) galaxies are candidates for galaxies in transition from a star-forming phase to a passively-evolving phase. We have spectroscopically identified large samples…
The DEEP2 Galaxy Redshift Survey: The Red Sequence AGN Fraction and its Environment and Redshift Dependence
Antonio D. Montero-Dorta, Darren J. Croton, Renbin Yan +7
We measure the dependence of the AGN fraction on local environment at z~1, using spectroscopic data taken from the DEEP2 Galaxy Redshift Survey, and Chandra X-ray data from the All…
The role of AGN in the colour transformation of galaxies at redshifts z~1
A. Georgakakis, K. Nandra, R. Yan +10
We explore the role of AGN in establishing and/or maintaining the bimodal colour distribution of galaxies by quenching their star-formation and hence, causing their transition from…
AEGIS: New Evidence Linking Active Galactic Nuclei to the Quenching of Star Formation
Kevin Bundy, Antonis Georgakakis, Kirpal Nandra +10
Utilizing Chandra X-ray observations in the All-wavelength Extended Groth Strip International Survey (AEGIS) we identify 241 X-ray selected Active Galactic Nuclei (AGNs, L > 10^{42…
Ages and Abundances of Red Sequence Galaxies as a Function of LINER Emission Line Strength
Genevieve J. Graves, Sandra M. Faber, Ricardo P. Schiavon +1
Although the spectrum of a prototypical early-type galaxy is assumed to lack emission lines, a substantial fraction (likely as high as 30%) of nearby red sequence galaxy spectra co…