AEGIS: Infrared spectral energy distributions of MIPS 70 μm-selected sources

M. Symeonidis, D. Rigopoulou, J. S. Huang, M. Davis, M. L N Ashby, P. Barmby, E. Egami, G. G. Fazio, E. Le Floc'h, George H. Rieke, S. P. Willner, G. Wilson

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We present 0.5-160 μm spectral energy distributions (SEDs) of galaxies, detected at 70 μm with the Multiband Imaging Photometer for Spitzer (MIPS), using broadband imaging data from Spitzer and ground-based telescopes. Spectroscopic redshifts, in the range 0.2 ≤ z ≤ 1.5, have been measured as part of the Deep Extragalactic Evolutionary Probe 2 (DEEP2) project. On the basis of the SEDs, we explore the nature and physical properties of the sources. Using the optical spectra, we derive Hβ and [O II]-based star formation rates (SFRs) that are 10-100 times lower than SFR estimates based on IR and radio. The median offset in SFR between optical and IR is reduced by a factor of ∼3 when we apply a typical extinction correction. We investigate mid- to far-infrared correlations for low-redshift (>0.5) and high-redshift (0.5 < z < 1.2) bins. Using this unique "far-infrared"-selected sample, we derive an empirical mid- to far-infrared relationship that can be used to estimate the infrared energy budget of galaxies in the high-redshift universe. Our sample can be used as a template to translate far-infrared luminosities into bolometric luminosities for high-redshift objects.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume660
Issue number1 II
DOIs
StatePublished - May 1 2007

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photometer
star formation rate
spectral energy distribution
photometers
luminosity
galaxies
energy
energy budgets
estimates
energy budget
optical spectrum
extinction
templates
universe
physical property
physical properties
probe
telescopes
radio
broadband

Keywords

  • Galaxies: fundamental parameters
  • Galaxies: high-redshift
  • Infrared: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Symeonidis, M., Rigopoulou, D., Huang, J. S., Davis, M., Ashby, M. L. N., Barmby, P., ... Wilson, G. (2007). AEGIS: Infrared spectral energy distributions of MIPS 70 μm-selected sources. Astrophysical Journal, 660(1 II). https://doi.org/10.1086/517928

AEGIS : Infrared spectral energy distributions of MIPS 70 μm-selected sources. / Symeonidis, M.; Rigopoulou, D.; Huang, J. S.; Davis, M.; Ashby, M. L N; Barmby, P.; Egami, E.; Fazio, G. G.; Le Floc'h, E.; Rieke, George H.; Willner, S. P.; Wilson, G.

In: Astrophysical Journal, Vol. 660, No. 1 II, 01.05.2007.

Research output: Contribution to journalArticle

Symeonidis, M, Rigopoulou, D, Huang, JS, Davis, M, Ashby, MLN, Barmby, P, Egami, E, Fazio, GG, Le Floc'h, E, Rieke, GH, Willner, SP & Wilson, G 2007, 'AEGIS: Infrared spectral energy distributions of MIPS 70 μm-selected sources', Astrophysical Journal, vol. 660, no. 1 II. https://doi.org/10.1086/517928
Symeonidis M, Rigopoulou D, Huang JS, Davis M, Ashby MLN, Barmby P et al. AEGIS: Infrared spectral energy distributions of MIPS 70 μm-selected sources. Astrophysical Journal. 2007 May 1;660(1 II). https://doi.org/10.1086/517928
Symeonidis, M. ; Rigopoulou, D. ; Huang, J. S. ; Davis, M. ; Ashby, M. L N ; Barmby, P. ; Egami, E. ; Fazio, G. G. ; Le Floc'h, E. ; Rieke, George H. ; Willner, S. P. ; Wilson, G. / AEGIS : Infrared spectral energy distributions of MIPS 70 μm-selected sources. In: Astrophysical Journal. 2007 ; Vol. 660, No. 1 II.
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