2004ApJS..154...87D

Query : 2004ApJS..154...87D

2004ApJS..154...87D - Astrophys. J., Suppl. Ser., 154, 87-92 (2004/September-0)

Far-infrared source counts at 70 and 160 microns in Spitzer Deep Surveys.

DOLE H., LE FLOC'H E., PEREZ-GONZALEZ P.G., PAPOVICH C., EGAMI E., LAGACHE G., ALONSO-HERRERO A., ENGELBRACHT C.W., GORDON K.D., HINES D.C., KRAUSE O., MISSELT K.A., MORRISON J.E., RIEKE G.H., RIEKE M.J., RIGBY J.R., YOUNG E.T., BAI L., BLAYLOCK M., NEUGEBAUER G., BEICHMAN C.A., FRAYER D.T., MOULD J.R. and RICHARDS P.L.

Abstract (from CDS):

We derive galaxy source counts at 70 and 160 µm using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field-South (CDF-S) and other fields. At 70 µm, our observations extend upward about 2 orders of magnitude in flux density from a threshold of 15 mJy, and at 160 µm they extend about an order of magnitude upward from 50 mJy. The counts are consistent with previous observations on the bright end. Significant evolution is detected at the faint end of the counts in both bands, by factors of 2-3 over no-evolution models. This evolution agrees well with models that indicate that most of the faint galaxies lie at redshifts between 0.7 and 0.9. The new Spitzer data already resolve about 23% of the cosmic far-infrared background at 70 µm and about 7% at 160 µm.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Evolution - Galaxies: Statistics - Infrared: Galaxies

Simbad objects: 2

Full paper

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Number of rows : 2

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
2	NAME NOAO Deep Wide Field	reg	14 32 05.75	+34 16 47.5						~	430	0

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