2010MNRAS.407L..69D

Query : 2010MNRAS.407L..69D

2010MNRAS.407L..69D - Mon. Not. R. Astron. Soc., 407, L69-L73 (2010/September-1)

Evolution of the star formation histories of BLAST galaxies.

DYE S., EALES S., MONCELSI L. and PASCALE E.

Abstract (from CDS):

We have measured star formation histories (SFHs) and stellar masses of galaxies detected by the Balloon-borne Large Aperture Submillimetre Telescope (BLAST) over ∼ 9deg2 centred on the Chandra Deep Field-South. We have applied the recently developed SFH reconstruction method of Dye et al. to optical, near-infrared and mid-infrared photometry of 92 BLAST galaxies. We find significant differences between the SFHs of low-mass (≲1011M☉) and high-mass (≳1011M☉) systems. On average, low-mass systems exhibit a dominant late burst of star formation which creates a large fraction of their stellar mass. Conversely, high-mass systems tend to have a significant amount of stellar mass that formed much earlier. We also find that the high-mass SFHs evolve more strongly than the low-mass SFHs. These findings are consistent with the phenomenon of downsizing observed in optically selected samples of galaxies.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): galaxies: evolution - galaxies: star formation - submillimetre: galaxies

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1

Query : 2010MNRAS.407L..69D

Basic data :
NAME Chandra Deep Field-South -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		03 32 28.0 -27 48 30 [ ] D 2001ApJ...551..624G
FK4 coord. (ep=B1950 eq=1950) : 		03 30 22.4 -27 58 35 [ ]
Gal coord. (ep=J2000) : 		223.5732 -54.4374 [ ]
Angular size (arcmin): 		15.84 15.84 ~ (~) D ~
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Identifiers (4) :
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NAME Chandra Deep Field-South NAME CDFS NAME CDF-S NAME Chandra Deep Field South

References (2282 between 1850 and 2026) (Total 2282)
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