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Communication Dans Un Congrès Année : 2004

Studying Galaxy Cluster Evolution with the ESO Distant Cluster Survey

Luc Simard
  • Fonction : Auteur

Résumé

We present the ESO Distant Cluster Survey (EDisCS), a survey of distant galaxy clusters between redshifts of z=0.4 and 0.8. Candidate clusters were chosen from among the brightest objects identified in the Las Campanas Distant Cluster Survey (LCDCS), half with estimated redshift zest ˜ 0.5 and half with zest ˜ 0.8. The sample of 20 clusters was confirmed using two-color data from the VLT/FORS2, with the requirement that an overdensity of galaxies was present with the expected color of the red sequence at zest and with a position corresponding to the LCDCS candidate. Very deep follow-up imaging was then performed in three optical bands with the VLT/FORS2 and in one or two near-infrared bands with NTT/SOFI. Deep optical spectroscopy was performed on all clusters using VLT/FORS2, yielding ˜ 45 confirmed members per cluster. In addition we have obtained wide-field imaging with the ESO Wide Field Imager and have HST/ACS mosaics for 10 of the most distant clusters.
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Dates et versions

hal-03734323 , version 1 (21-07-2022)

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Gregory H. Rudnick, Simon D. M. White, Douglas I. Clowe, Luc Simard, Gabriella de Lucia, et al.. Studying Galaxy Cluster Evolution with the ESO Distant Cluster Survey. American Astronomical Society Meeting Abstracts #205, Jan 2005, San Diego, CA, United States. pp.1613. ⟨hal-03734323⟩
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