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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - HerMES: Candidate High-redshift Galaxies Discovered with Herschel/SPIRE
AU - Dowell, C. Darren
AU - Conley, A.
AU - Glenn, J.
AU - Arumugam, V.
AU - Asboth, V.
AU - Aussel, H.
AU - Bertoldi, F.
AU - Béthermin, M.
AU - Bock, J.
AU - Boselli, A.
AU - Bridge, C.
AU - Buat, V.
AU - Burgarella, D.
AU - Cabrera-Lavers, A.
AU - Casey, C. M.
AU - Chapman, S. C.
AU - Clements, D. L.
AU - Conversi, L.
AU - Cooray, A.
AU - Dannerbauer, H.
AU - De Bernardis, F.
AU - Ellsworth-Bowers, T. P.
AU - Farrah, D.
AU - Franceschini, A.
AU - Griffin, M.
AU - Gurwell, M. A.
AU - Halpern, M.
AU - Hatziminaoglou, E.
AU - Heinis, S.
AU - Ibar, E.
AU - Ivison, R. J.
AU - Laporte, N.
AU - Marchetti, L.
AU - Martínez-Navajas, P.
AU - Marsden, G.
AU - Morrison, G. E.
AU - Nguyen, H. T.
AU - O'Halloran, B.
AU - Oliver, S. J.
AU - Omont, A.
AU - Page, M. J.
AU - Papageorgiou, A.
AU - Pearson, C. P.
AU - Petitpas, G.
AU - Pérez-Fournon, I.
AU - Pohlen, M.
AU - Riechers, D.
AU - Rigopoulou, D.
AU - Roseboom, I. G.
AU - Rowan-Robinson, M.
AU - Sayers, J.
AU - Schulz, B.
AU - Scott, Douglas
AU - Seymour, N.
AU - Shupe, D. L.
AU - Smith, A. J.
AU - Streblyanska, A.
AU - Symeonidis, M.
AU - Vaccari, M.
AU - Valtchanov, I.
AU - Vieira, J. D.
AU - Viero, M.
AU - Wang, L.
AU - Wardlow, J.
AU - Xu, C. K.
AU - Zemcov, M.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 μm flux densities to search for red sources. We apply this method to 21 deg2 of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 μm) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S 500 μm >= 30 mJy), red Herschel sources is 3.3 ± 0.8 deg-2. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z ~ 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction. . Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
AB - We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 μm flux densities to search for red sources. We apply this method to 21 deg2 of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 μm) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S 500 μm >= 30 mJy), red Herschel sources is 3.3 ± 0.8 deg-2. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z ~ 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction. . Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
KW - galaxies: high-redshift
KW - galaxies: starburst
KW - infrared: galaxies
KW - submillimeter: galaxies
U2 - 10.1088/0004-637X/780/1/75
DO - 10.1088/0004-637X/780/1/75
M3 - Journal article
VL - 780
SP - 75
JO - The Astrophysical Journal
JF - The Astrophysical Journal
SN - 0004-637X
IS - 1
ER -