We are pleased to announce a virtual meeting for the presentation of the first GOGREEN Data release and science results, hosted by the Waterloo Centre for Astrophysics. The public portion of the meeting will run from 10am-2pm EDT on Monday Aug 24, and 10am-12pm EDT on Tuesday Aug 25. To be included on future emails, and to receive the password-protected Zoom link on August 21, please register here. There is no registration fee. A preliminary agenda will be released shortly.
GOGREEN is a spectroscopic and photometric survey of 21 galaxy cluster systems at 1<z<1.5. Its foundation is a Gemini Large and Long Program conducted over five years (2014-2019), using GMOS imaging and spectroscopy to characterize galaxy populations in these clusters. In addition, deep (AB>24) multiwavelength imaging from ground and space (including Spitzer and HST/WFC3) has been obtained for all systems. The Data Release includes fully reduced images and spectra, with catalogues of advanced data products including redshifts, line strengths, stellar masses and rest-frame colours. Spectroscopy, imaging and catalogues from the GCLASS survey (Muzzin et al. 2012) of clusters at slightly lower redshift 0.8<z<1.3 is also included in the Release.
The GOGREEN survey was optimized to tackle key questions around the evolution of galaxies. To this end there was an emphasis on obtaining unbiased spectroscopy over a wide range of stellar masses (Mstar> 2 x 1010M☉ ) and halo masses (1013 - 1015M☉), at a redshift approaching the peak of the star formation activity in the Universe. The combined spectroscopic sample of GCLASS and GOGREEN includes over 2000 redshifts, including nearly 800 cluster members.
In addition to a description of the data, the meeting will include a summary of published and forthcoming science results from the survey. These results include an analysis of how the main sequence of star-forming galaxies depends on their environment at 1<z<1.5, and how the quiescent galaxy population is built up over time. We find strong evidence that the physical processes responsible for the quenching of star formation in dense environments at z>1 are fundamentally different from those that dominate clusters at z=0.
More information about the survey can be found at http://gogreensurvey.ca
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