2010A&A...518L...7S


Query : 2010A&A...518L...7S

2010A&A...518L...7S - Astronomy and Astrophysics, volume 518, L7-7 (2010/7-2)

Herschel ATLAS: the cosmic star formation history of quasar host galaxies.

SERJEANT S., BERTOLDI F., BLAIN A.W., CLEMENTS D.L., COORAY A., DANESE L., DUNLOP J., DUNNE L., EALES S., FALDER J., HATZIMINAOGLOU E., HUGHES D.H., IBAR E., JARVIS M.J., LAWRENCE A., LEE M.G., MICHALOWSKI M., NEGRELLO M., OMONT A., PAGE M., PEARSON C., VAN DER WERF P., WHITE G., AMBLARD A., AULD R., BAES M., BONFIELD D.G., BURGARELLA D., BUTTIGLIONE S., CAVA A., DARIUSH A., DE ZOTTI G., DYE S., FRAYER D., FRITZ J., GONZALEZ-NUEVO J., HERRANZ D., IVISON R.J., LAGACHE G., LEEUW L., LOPEZ-CANIEGO M., MADDOX S., PASCALE E., POHLEN M., RIGBY E., RODIGHIERO G., SAMUI S., SIBTHORPE B., SMITH D.J.B., TEMI P., THOMPSON M., VALTCHANOV I. and VERMA A.

Abstract (from CDS):

We present a derivation of the star formation rate per comoving volume of quasar host galaxies, derived from stacking analyses of far-infrared to mm-wave photometry of quasars with redshifts 0<z<6 and absolute I-band magnitudes -22>IAB>-32 We use the science demonstration observations of the first ∼16deg2 from the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) in which there are 240 quasars from the Sloan Digital Sky Survey (SDSS) and a further 171 from the 2dF-SDSS LRG and QSO (2SLAQ) survey. We supplement this data with a compilation of data from IRAS, ISO, Spitzer, SCUBA and MAMBO. H-ATLAS alone statistically detects the quasars in its survey area at >5σ at 250,350 and 500µm. From the compilation as a whole we find striking evidence of downsizing in quasar host galaxy formation: low-luminosity quasars with absolute magnitudes in the range -22>IAB>-24 have a comoving star formation rate (derived from 100µm rest-frame luminosities) peaking between redshifts of 1 and 2, while high-luminosity quasars with IAB←26 have a maximum contribution to the star formation density at z∼3. The volume-averaged star formation rate of -22>IAB>-24 quasars evolves as (1+z)2.3±0.7 at z<2, but the evolution at higher luminosities is much faster reaching (1+z)10±1 at -26>IAB>-28. We tentatively interpret this as a combination of a declining major merger rate with time and gas consumption reducing fuel for both black hole accretion and star formation.

Abstract Copyright:

Journal keyword(s): galaxies: active - infrared: galaxies - quasars: general - galaxies: formation - submillimeter: galaxies - galaxies: starburst

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5677 6
2 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2872 4
3 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 418 2
4 ESO 286-19 LIN 20 58 26.8183783008 -42 38 59.411838156   14.79 14.79 14.20   ~ 276 0
5 NAME South America H2G 22 51 49.307 -17 52 23.96   16.97       ~ 314 3

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2023.01.31-00:47:39

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