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Deep Herschel view of obscured star formation in the Bullet cluster

Rawle, T. D. and Fadda, D. and Blain, A. W. and Bridge, C. R. and Zemcov, M. and Appleton, P. N. and Bock, J. J. and Dowell, C. D. (2010) Deep Herschel view of obscured star formation in the Bullet cluster. Astronomy and Astrophysics, 518 . L14. ISSN 0004-6361.

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We use deep, five band (100–500 μm) data from the Herschel Lensing Survey (HLS) to fully constrain the obscured star formation rate, SFR_(FIR), of galaxies in the Bullet cluster (z = 0.296), and a smaller background system (z = 0.35) in the same field. Herschel detects 23 Bullet cluster members with a total SFRFIR = 144±14 M_☉ yr^(-1). On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFRFIR (21 galaxies; 207 ± 9 M_☉ yr^(-1)). SFRs extrapolated from 24 μm flux via recent templates (SFR_(24 µm)) agree well with SFRFIR for ~60% of the cluster galaxies. In the remaining ~40%, SFR24 µm underestimates SFR_(FIR) due to a significant excess in observed S_(100)/S_(24) (rest frame S_(75)/S_(18)) compared to templates of the same FIR luminosity.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Fadda, D.0000-0002-3698-7076
Blain, A. W.0000-0001-7489-5167
Zemcov, M.0000-0001-8253-1451
Appleton, P. N.0000-0002-7607-8766
Bock, J. J.0000-0002-5710-5212
Additional Information:© 2010 ESO. Received 31 March 2010; Accepted 11 May 2010; Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. Data presented in this paper were analyzed using “The Herschel Interactive Processing Environment (HIPE)”, a joint development by the Herschel Science Ground Segment Consortium, consisting of ESA, the NASA Herschel Science Center, and the HIFI, PACS and SPIRE consortia. This work is based in part on observations made with Herschel, a European Space Agency Cornerstone Mission with significant participation by NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech.
Funding AgencyGrant Number
Subject Keywords:galaxies: clusters: individual: Bullet cluster; galaxies: star formation; infrared: galaxies; submillimeter: galaxies
Record Number:CaltechAUTHORS:20101123-094918178
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Official Citation:Deep Herschel view of obscured star formation in the Bullet cluster T. D. Rawle, S. M. Chung, D. Fadda, M. Rex, E. Egami, P. G. Pérez-González, B. Altieri, A. W. Blain, C. R. Bridge, A. K. Fiedler, A. H. Gonzalez, M. J. Pereira, J. Richard, I. Smail, I. Valtchanov, M. Zemcov, P. N. Appleton, J. J. Bock, F. Boone, B. Clement, F. Combes, C. D. Dowell, M. Dessauges-Zavadsky, O. Ilbert, R. J. Ivison, M. Jauzac, J.-P. Kneib, D. Lutz, R. Pelló, G. H. Rieke, G. Rodighiero, D. Schaerer, G. P. Smith, G. L. Walth, P. van der Werf and M. W. Werner A&A 518 L14 (2010) DOI: 10.1051/0004-6361/201014681
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20974
Deposited By: Jason Perez
Deposited On:23 Nov 2010 19:27
Last Modified:09 Mar 2020 13:18

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