2011ApJ...728L...4H

Query : 2011ApJ...728L...4H

2011ApJ...728L...4H - Astrophys. J., 728, L4 (2011/February-2)

Spitzer imaging of herschel-atlas gravitationally lensed submillimeter sources.

HOPWOOD R., WARDLOW J., COORAY A., KHOSTOVAN A.A., KIM S., NEGRELLO M., DA CUNHA E., BURGARELLA D., ARETXAGA I., AULD R., BAES M., BARTON E., BERTOLDI F., BONFIELD D.G., BLUNDELL R., BUTTIGLIONE S., CAVA A., CLEMENTS D.L., COOKE J., DANNERBAUER H., DARIUSH A., DE ZOTTI G., DUNLOP J., DUNNE L., DYE S., EALES S., FRITZ J., FRAYER D., GURWELL M.A., HUGHES D.H., IBAR E., IVISON R.J., JARVIS M.J., LAGACHE G., LEEUW L., MADDOX S., MICHOWSKI M.J., OMONT A., PASCALE E., POHLEN M., RIGBY E., RODIGHIERO G., SCOTT D., SERJEANT S., SMAIL I., SMITH D.J.B., TEMI P., THOMPSON M.A., VALTCHANOV I., VAN DER WERF P., VERMA A. and VIEIRA J.D.

Abstract (from CDS):

We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 µm, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 µm data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with AV∼ 4-5 and star formation rates of ∼100 M☉/yr. They have low gas fractions and low dynamical masses compared with 850 µm selected galaxies.

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Journal keyword(s): galaxies: individual (SDP.81: H-ATLAS J090311.6+003906, SDP.130: H-ATLAS J091305.0-005343) - galaxies: starburst - gravitational lensing: strong

Simbad objects: 4

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Number of rows : 4
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 SDP 81 LeG 09 03 11.574 +00 39 06.55           ~ 106 0
2 SDSS J090311.57+003906.5 GiC 09 03 11.5785 +00 39 06.542           ~ 30 0
3 HerBS 59 LeG 09 13 05.0 -00 53 43           ~ 40 0
4 GAMA 3632645 gLe 09 13 05.09 -00 53 42.8           ~ 17 0

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