Spitzer Observations of Galaxy Clusters
Abstract
We present preliminary results of a project to study three rich nearby clusters of galaxies with the Spitzer space telescope. The Spitzer observations in the four IRAC and three MIPS bands cover a region up to three virial radii, approximately, and have been recently completed. On the basis of the first Spitzer images, we followed up spectroscopically the far-infrared sources with the multi-fiber spectrograph HYDRA on the WIYN telescope. 70% of the sources brighter than 0.3 mJy at 24 μm and r' < 20.5 have been observed for a total of 1078 spectra. For 87% of them we were able to measure redshifts obtaining 50 to 100 members for the different clusters. This first study shows that the far-IR sources in these clusters are predominantly powered by star formation and clustered in regions far from the center. In the case of A1763, they seem to be situated along a filament supporting the idea of infalling galaxies experiencing bursts of star formation during their first contact with the hot intra-cluster medium.
Additional Information
© 2007 Astronomical Society of the Pacific.Attached Files
Published - Fadda2007p8638At_The_Edge_Of_The_Universe_Latest_Results_From_The_Deepest_Astronomical_Surveys.pdf
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Additional details
- Eprint ID
- 19978
- Resolver ID
- CaltechAUTHORS:20100916-105726814
- Created
-
2010-09-16Created from EPrint's datestamp field
- Updated
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2019-12-14Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- ASP Conference Series
- Series Volume or Issue Number
- 380