Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21720603m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #206.03; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The elapsed time since z 1, spanning roughly 60% of the age of the Universe, represents an important and dramatic epoch in galaxy evolution. During this time galaxies agglomerate into large-scale structures like groups and clusters, the cosmic rate of star formation declines by an order-of-magnitude, and there is a significant buildup in the population of red, passively evolving galaxies. However, efforts to understand this evolution by leveraging the tremendous multiwavelength datasets acquired from space -- from Spitzer, GALEX, Chandra, XMM, and HST -- have been hampered by a lack of precise redshifts for large samples of galaxies over a wide enough area of the sky to mitigate the effects of cosmic variance. To address these issues, we have carried out the PRIsm MUlti-object Survey (PRIMUS), the largest spectroscopic survey of intermediate-redshift galaxies conducted to date. Combining redshifts from PRIMUS with ancillary ground- and space-based observations from the X-ray to the infrared, we have begun to measure the relative importance of large-scale environment on galaxy evolution, and the multivariate distributions of luminosity, color, star formation rate, stellar mass, and AGN activity in galaxies since z 1 with unprecedented precision. We introduce the survey and highlight the first science results from PRIMUS. PRIMUS is generously supported by grants from NASA and NSF.
Moustakas John
PRIMUS Collaboration
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