Image of Alice in Wonderland at the Mad Hatter's tea party You are cordially invited to afternoon tea and biscuits wine and chocolate

Astronomy Tea Talks at Caltech

Mondays, Hameetman auditorium (Cahill)
Tea:  4.00pm
Talk: 4.15pm

Organized by:

2010 - 2011 season:
DATE HERE John Moustakas (UUCSD)

'Evolution of the Galaxy Stellar Mass Function and Mass-Metallicity Relation Since z=1'

Observations from the Sloan Digital Sky Survey (SDSS) have enabled the multivariate physical properties of galaxies in the local universe to be quantified in unprecedented detail. However, efforts to extend these measurements to intermediate redshift 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), obtaining low-resolution spectroscopic redshifts for ~140,000 galaxies with i<23 over ~9 square degrees in seven distinct fields with existing multiwavelength observations from the X-ray to the infrared. I will present preliminary measurements of the evolution of the stellar mass function for quiescent and star-forming galaxies from z=0-1, and highlight additional first science results from PRIMUS. Complementing these results, I will present new constraints on the evolution of the mass-metallicity relation for star-forming galaxies to z=0.7 using observations from the AGN and Galaxy Evolution Survey (AGES). Taken together, these observations suggest that the heyday of star formation and metal production for the most massive galaxies was at z>1.
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Last modified on 20th Jul 2011 by Dominik A. Riechers.  

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