The LABOCA survey of the Extended Chandra Deep Field-South: a photometric redshift survey of submillimetre galaxies

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Search: WFRF:(Danielson L. S.) > The LABOCA survey o...

The LABOCA survey of the Extended Chandra Deep Field-South: a photometric redshift survey of submillimetre galaxies

Wardlow, J. L. (author): University of California at Irvine (UCI),Durham University

Smail, I. (author): Durham University

Coppin, K. E. K. (author): Durham University

Alexander, D. M. (author): University of California at Irvine (UCI)

Brandt, W. N. (author): Pennsylvania State University

Danielson, A. L. R. (author): University of California at Irvine (UCI)

Luo, B. (author): Pennsylvania State University

Swinbank, A. M. (author): Durham University

Walter, F. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Weiss, A. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Xue, Y. Q. (author): Pennsylvania State University

Zibetti, S. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Bertoldi, F. (author)

Biggs, A. D. (author): European Southern Observatory (ESO)

Chapman, S. C. (author): University Of Cambridge

Dannerbauer, H. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Dunlop, J.S. (author): University of Edinburgh

Gawiser, E. (author): Rutgers University

Ivison, R. J. (author): University of Edinburgh,Royal Observatory

Knudsen, Kirsten Kraiberg, 1976 (author): Chalmers tekniska högskola,Chalmers University of Technology

Kovacs, A. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Lacey, C. G. (author): Durham University

Menten, K. M. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Padilla, N. (author): Pontificia Universidad Catolica de Chile

Rix, H. W. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

van der Werf, P.P. (author): Universiteit Leiden (UL),Leiden University (UL)

show less...

(creator_code:org_t)

2011-06-16
2011
English.
In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 415:2, s. 1479-1508

Related links:: http://publications.... (primary) (free); show more...; https://academic.oup...; https://research.cha...; https://doi.org/10.1...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

We derive photometric redshifts from 17-band optical to mid-infrared photometry of 78 robust radio, 24-mu m and Spitzer IRAC counterparts to 72 of the 126 submillimetre galaxies (SMGs) selected at 870 mu m by LABOCA observations in the Extended Chandra Deep Field-South (ECDF-S). We test the photometric redshifts of the SMGs against the extensive archival spectroscopy in the ECDF-S. The median photometric redshift of identified SMGs is z = 2.2 +/- 0.1, the standard deviation is sigma(z) = 0.9 and we identify 11 (similar to 15 per cent) high-redshift (z >= 3) SMGs. A statistical analysis of sources in the error circles of unidentified SMGs identifies a population of possible counterparts with a redshift distribution peaking at z = 2.5 +/- 0.2, which likely comprises similar to 60 per cent of the unidentified SMGs. This confirms that the bulk of the undetected SMGs are coeval with those detected in the radio/mid-infrared. We conclude that at most similar to 15 per cent of all the SMGs are below the flux limits of our IRAC observations and thus may lie at z greater than or similar to 3 and hence at most similar to 30 per cent of all SMGs have z greater than or similar to 3. We estimate that the full S(870 mu m) > 4mJy SMG population has a median redshift of 2.5 +/- 0.5. In contrast to previous suggestions, we find no significant correlation between submillimetre flux and redshift. The median stellar mass of the SMGs derived from spectral energy distribution fitting is (9.1 +/- 0.5) x 10(10)M(circle dot) although we caution that the uncertainty in the star formation histories results in a factor of similar to 5 uncertainty in these stellarmasses. Using a single temperature modified blackbody fit with beta = 1.5, the median characteristic dust temperature of SMGs is 37.4 +/- 1.4K. The infrared luminosity function shows that SMGs at z = 2-3 typically have higher far-infrared luminosities and luminosity density than those at z = 1-2. This is mirrored in the evolution of the star formation rate density (SFRD) for SMGs which peaks at z similar to 2. The maximum contribution of bright SMGs to the global SFRD (similar to 5 per cent for SMGs with S(870 mu m) greater than or similar to 4mJy or similar to 50 per cent extrapolated to SMGs with S(870 mu m) > 1mJy) also occurs at z similar to 2.

Subject headings

NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

spitzer-space-telescope
galaxies: starburst
mu-m observations
degree extragalactic survey
function
sources
v614
star-forming galaxies
yale-chile musyc
submillimetre: galaxies
carthy pj
similar-to 2.5
luminous infrared galaxies
galaxies: evolution
scuba super-map
2004
galaxies: high-redshift
p9
x-ray
initial mass

Publication and Content Type

art (subject category)
ref (subject category)

Find in a library

Monthly Notices of the Royal Astronomical Society (Search for host publication in LIBRIS)

To the university's database

Find more in SwePub

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

Articles in the publication: Monthly Notices ...

By the university: Chalmers University of Technology

Search outside SwePub

Extend your search to:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se