Fadda, Dario and Biviano, A. and Marleau, F. and Storrie-Lombardi, L. and Durret, F. (2007) Spitzer Observations of Galaxy Clusters. In: At the edge of the universe: latest results from the deepest astronomical surveys. ASP Conference Series (380). Astronomical Society of the Pacific , San Francisco, CA, pp. 507-510. ISBN 978-1-58381-323-2 http://resolver.caltech.edu/CaltechAUTHORS:20100916-105726814
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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.
|Item Type:||Book Section|
|Additional Information:||© 2007 Astronomical Society of the Pacific.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||16 Sep 2010 23:10|
|Last Modified:||26 Dec 2012 12:25|
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