Submillimeter Detections of Spitzer Space Telescope Galaxy Populations uri icon

abstract

  • We present submillimeter statistical detections of galaxies discovered in the 5 x 5 Spitzer Early Release Observations (to 4-15 Jy 5 at 3.6-8 m, 170 Jy at 24 m) through a stacking analysis of our reanalyzed SCUBA 8 mJy survey maps and a Spitzer identification of a new submillimeter point source in the 8 mJy survey region. For sources detected at 5.8 or 8 m (154 and 111 sources, respectively), we detect positive skews in the submillimeter flux distributions at 99.2%-99.8% confidence using Kolmogorov-Smirnov tests, at both 850 and 450 m. We also marginally detect the Spitzer 24 m galaxies at 850 m at 97% confidence and place limits on the mean submillimeter fluxes of the 3.6 and 4.5 m sources. Integrating the submillimeter fluxes of the Spitzer populations, we find the 5.8 m galaxies contribute 0.12 0.05 nW m -2 sr -1 to the 850 m background and 2.4 0.7 nW m -2 sr -1 to the 450 m background; similar contributions are made by the 8 m-selected sample. We infer that the populations dominating the 5.8 and 8 m extragalactic background light also contribute around a quarter of the 850 m background and the majority of the 450 m background.

published proceedings

  • The Astrophysical Journal Supplement Series

author list (cited authors)

  • Serjeant, S., Mortier, A., Ivison, R. J., Egami, E., Rieke, G. H., Willner, S. P., ... Wilson, G.

citation count

  • 25

complete list of authors

  • Serjeant, S||Mortier, AMJ||Ivison, RJ||Egami, E||Rieke, GH||Willner, SP||Rigopoulou, D||Alonso-Herrero, A||Barmby, P||Bei, L||Dole, H||Engelbracht, CW||Fazio, GG||Le Floc’h, E||Gordon, KD||Greve, TR||Hines, DC||Huang, J-S||Misselt, KA||Miyazaki, S||Morrison, JE||Papovich, C||Pérez-González, PG||Rieke, MJ||Rigby, J||Wilson, G

publication date

  • September 2004