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; M. W. Werner

doi:10.1051/0004-6361/201014681

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. ClementF. 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, M. W. Werner

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27 Scopus citations

Abstract

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 SFR_FIR = 144±14 odot yr ^-1. On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFR_FIR (21 galaxies; 207± 9 odotyr^-1). SFRs extrapolated from 24 μm flux via recent templates (SFR_{24 μm}) agree well with SFR_FIR for ∼60% of the cluster galaxies. In the remaining ∼40%, SFR_{24 μm} underestimates SFR_FIR due to a significant excess in observed S ₁₀₀/S₂₄ (rest frame S₇₅/S₁₈) compared to templates of the same FIR luminosity.

Original language	English (US)
Article number	L14
Journal	Astronomy and astrophysics
Volume	518
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361/201014681
State	Published - Jul 16 2010

Keywords

Galaxies: clusters: individual: Bullet cluster
Galaxies: star formation
Infrared: galaxies
Submillimeter: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/201014681

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Rawle, T. D., Chung, S. M., Fadda, D., Rex, M., Egami, E., Pérez-González, P. G., Altieri, B., Blain, A. W., Bridge, C. R., Fiedler, A. K., Gonzalez, A. H., Pereira, M. J., Richard, J., Smail, I., Valtchanov, I., Zemcov, M., Appleton, P. N., Bock, J. J., Boone, F., ... Werner, M. W. (2010). Deep Herschel view of obscured star formation in the Bullet cluster. Astronomy and astrophysics, 518(2), Article L14. https://doi.org/10.1051/0004-6361/201014681

Rawle, TD, Chung, SM, Fadda, D, Rex, M, Egami, E, Pérez-González, PG, Altieri, B, Blain, AW, Bridge, CR, Fiedler, AK, Gonzalez, AH, Pereira, MJ, Richard, J, Smail, I, Valtchanov, I, Zemcov, M, Appleton, PN, Bock, JJ, Boone, F, Clement, B, Combes, F, Dowell, CD, Dessauges-Zavadsky, M, Ilbert, O, Ivison, RJ, Jauzac, M, Kneib, JP, Lutz, D, Pelló, R, Rieke, GH, Rodighiero, G, Schaerer, D, Smith, GP, Walth, GL, Van Der Werf, P & Werner, MW 2010, 'Deep Herschel view of obscured star formation in the Bullet cluster', Astronomy and astrophysics, vol. 518, no. 2, L14. https://doi.org/10.1051/0004-6361/201014681

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title = "Deep Herschel view of obscured star formation in the Bullet cluster",

abstract = "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 odot yr -1. On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFRFIR (21 galaxies; 207± 9 odotyr-1). SFRs extrapolated from 24 μm flux via recent templates (SFR24 μm) agree well with SFRFIR for ∼60% of the cluster galaxies. In the remaining ∼40%, SFR24 μm underestimates SFRFIR due to a significant excess in observed S 100/S24 (rest frame S75/S18) compared to templates of the same FIR luminosity.",

keywords = "Galaxies: clusters: individual: Bullet cluster, Galaxies: star formation, Infrared: galaxies, Submillimeter: galaxies",

author = "Rawle, {T. D.} and Chung, {S. M.} and D. Fadda and M. Rex and E. Egami and P{\'e}rez-Gonz{\'a}lez, {P. G.} and B. Altieri and Blain, {A. W.} and Bridge, {C. R.} and Fiedler, {A. K.} and Gonzalez, {A. H.} and Pereira, {M. J.} and J. Richard and I. Smail and I. Valtchanov and M. Zemcov and Appleton, {P. N.} and Bock, {J. J.} and F. Boone and B. Clement and F. Combes and Dowell, {C. D.} and M. Dessauges-Zavadsky and O. Ilbert and Ivison, {R. J.} and M. Jauzac and Kneib, {J. P.} and D. Lutz and R. Pell{\'o} and Rieke, {G. H.} and G. Rodighiero and D. Schaerer and Smith, {G. P.} and Walth, {G. L.} and {Van Der Werf}, P. and Werner, {M. W.}",

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T1 - Deep Herschel view of obscured star formation in the Bullet cluster

AU - Rawle, T. D.

AU - Chung, S. M.

AU - Fadda, D.

AU - Rex, M.

AU - Egami, E.

AU - Pérez-González, P. G.

AU - Altieri, B.

AU - Blain, A. W.

AU - Bridge, C. R.

AU - Fiedler, A. K.

AU - Gonzalez, A. H.

AU - Pereira, M. J.

AU - Richard, J.

AU - Smail, I.

AU - Valtchanov, I.

AU - Zemcov, M.

AU - Appleton, P. N.

AU - Bock, J. J.

AU - Boone, F.

AU - Clement, B.

AU - Combes, F.

AU - Dowell, C. D.

AU - Dessauges-Zavadsky, M.

AU - Ilbert, O.

AU - Ivison, R. J.

AU - Jauzac, M.

AU - Kneib, J. P.

AU - Lutz, D.

AU - Pelló, R.

AU - Rieke, G. H.

AU - Rodighiero, G.

AU - Schaerer, D.

AU - Smith, G. P.

AU - Walth, G. L.

AU - Van Der Werf, P.

AU - Werner, M. W.

PY - 2010/7/16

Y1 - 2010/7/16

N2 - 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 odot yr -1. On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFRFIR (21 galaxies; 207± 9 odotyr-1). SFRs extrapolated from 24 μm flux via recent templates (SFR24 μm) agree well with SFRFIR for ∼60% of the cluster galaxies. In the remaining ∼40%, SFR24 μm underestimates SFRFIR due to a significant excess in observed S 100/S24 (rest frame S75/S18) compared to templates of the same FIR luminosity.

AB - 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 odot yr -1. On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFRFIR (21 galaxies; 207± 9 odotyr-1). SFRs extrapolated from 24 μm flux via recent templates (SFR24 μm) agree well with SFRFIR for ∼60% of the cluster galaxies. In the remaining ∼40%, SFR24 μm underestimates SFRFIR due to a significant excess in observed S 100/S24 (rest frame S75/S18) compared to templates of the same FIR luminosity.

KW - Galaxies: clusters: individual: Bullet cluster

KW - Galaxies: star formation

KW - Infrared: galaxies

KW - Submillimeter: galaxies

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UR - http://www.scopus.com/inward/citedby.url?scp=77954776154&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201014681

DO - 10.1051/0004-6361/201014681

M3 - Article

AN - SCOPUS:77954776154

SN - 0004-6361

VL - 518

JO - Astronomy and astrophysics

JF - Astronomy and astrophysics

IS - 2

M1 - L14

ER -

Deep Herschel view of obscured star formation in the Bullet cluster

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Keywords

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