Deep Herschel view of obscured star formation in the Bullet cluster.
- 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.
- Clement, B.
- Combes, F.
- Dowell, C.D.
- Dessauges-Zavadsky, M.
- Ilbert, O.
- Ivison, R.J.
- Jauzac, M.
- Kneib, J.-P.
- Lutz, D.
- Pelló, R.
- Rieke, G.H.
- Rodighiero, G.
- Schaerer, D.
- Smith, G.P.
- Walth, G.L.
- van der Werf, P.
- Werner, M.W.
DOIAbstract
We use deep, five band (100–500 μm) data from the Herschel Lensing Survey (HLS) to fully constrain the obscured star formation rate, SFRFIR, 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 yr-1. On average, the background system contains brighter far-infrared (FIR) galaxies, with ~50% higher SFRFIR (21 galaxies; 207± 9 yr-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 S100/S24 (rest frame S75/S18) compared to templates of the same FIR l...
Add to ORKG