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The European Large Area ISO Survey - IV. The preliminary 90-μm luminosity function
- Source :
- Monthly Notices of the Royal Astronomical Society: Letters, Monthly Notices of the Royal Astronomical Society: Letters, Oxford Journals, 2001, 322, pp.262-268. ⟨10.1046/j.1365-8711.2001.04062.x⟩, Monthly Notices of the Royal Astronomical Society: Letters, 2001, 322, pp.262-268. ⟨10.1046/j.1365-8711.2001.04062.x⟩
- Publication Year :
- 2001
- Publisher :
- HAL CCSD, 2001.
-
Abstract
- We present the luminosity function of 90um selected galaxies from the European Large Area ISO Survey (ELAIS), extending to z=0.3. Their luminosities are in the range 10^9 < h_65^-2 L/Lsun < 10^12, i.e. non-ultraluminous. From our sample of 37 reliably detected galaxies in the ELAIS S1 region from the Efstathiou et al. (2000) S_90 >= 100mJy database, we found optical, 15um or 1.4GHz identifications for 24 (65%). We have obtained 2dF and UK Schmidt FLAIR spectroscopy of 89% of IDs to rigid multivariate flux limits. We construct a luminosity function assuming (a) our spectroscopic subset is an unbiased sparse sample, and (b) there are no galaxies which would not be represented in our spectroscopic sample at {\it any} redshift. We argue that we can be confident of both assumptions. We find the luminosity function is well-described by the local 100um luminosity function of Rowan-Robinson, Helou & Walker (1987). {\it Assuming} this local normalisation, we derive luminosity evolution of (1+z)^{2.45\pm0.85} (95% confidence). We argue that star formation dominates the bolometric luminosities of these galaxies and we derive comoving star formation rates in broad agreement with the Flores et al. (1999) and Rowan-Robinson et al. (1997) mid-IR-based estimates.<br />MNRAS in press. 8 pages. Uses BoxedEPS (included). For more information on the ELAIS project see http://athena.ph.ic.ac.uk:80/
- Subjects :
- GALAXIES: EVOLUTION
starburst ± cosmology
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena
GALAXIES: STARBURST
COSMOLOGY: OBSERVATIONS
FOS: Physical sciences
Flux
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Luminosity
observations ± infrared
0103 physical sciences
galaxies
Range (statistics)
Astrophysics::Solar and Stellar Astrophysics
[INFO]Computer Science [cs]
Spectroscopy
GALAXIES: FORMATION
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
0105 earth and related environmental sciences
Luminosity function (astronomy)
Physics
Star formation
Astrophysics (astro-ph)
Astronomy and Astrophysics
Redshift
Galaxy
INFRARED: GALAXIES
Space and Planetary Science
surveys ± galaxies
evolution ± galaxies
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
SURVEYS
formation ± galaxies
Subjects
Details
- Language :
- English
- ISSN :
- 17453933, 13652966, and 00358711
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society: Letters, Monthly Notices of the Royal Astronomical Society: Letters, Oxford Journals, 2001, 322, pp.262-268. ⟨10.1046/j.1365-8711.2001.04062.x⟩, Monthly Notices of the Royal Astronomical Society: Letters, 2001, 322, pp.262-268. ⟨10.1046/j.1365-8711.2001.04062.x⟩
- Accession number :
- edsair.doi.dedup.....db44c18fe8eaa9fa6b3be1df4a32d01e