Advanced search
1 file | 1.95 MB Add to list

Spitzer-IRAC identification of Herschel-Atlas SPIRE sources

Author
Organization
Abstract
We use Spitzer-IRAC data to identify near-infrared counterparts to submillimeter galaxies detected with Herschel-SPIRE at 250 mu m in the Herschel Astrophysical Terahertz Large Area Survey. Using a likelihood ratio analysis we identify 146 reliable IRAC counterparts to 123 SPIRE sources out of the 159 in the survey area. We find that, compared to the field population, the SPIRE counterparts occupy a distinct region of the 3.6 and 4.5 mu m color-magnitude space, and we use this property to identify 23 further counterparts to 13 SPIRE sources. The IRAC identification rate of 86% is significantly higher than those that have been demonstrated with wide-field ground-based optical and near-IR imaging of Herschel fields. We estimate a false identification rate of 3.6%, corresponding to 4-5 sources. Among the 73 counterparts that are undetected in Sloan Digital Sky Survey, 57 have both 3.6 and 4.5 mu m coverage. Of these, 43 have [3.6]-[4.5] > 0, indicating that they are likely to be at z greater than or similar to 1.4. Thus, similar to 40% of identified SPIRE galaxies are likely to be high-redshift (z greater than or similar to 1.4) sources. We discuss the statistical properties of the IRAC-identified SPIRE galaxy sample including far-IR luminosities, dust temperatures, star formation rates, and stellar masses. The majority of our detected galaxies have 10(10)-10(11) L-circle dot total IR luminosities and are not intense starbursting galaxies as those found at z similar to 2, but they have a factor of 2-3 above average specific star formation rates compared to near-IR selected galaxy samples.
Keywords
DEEP-FIELD-SOUTH, SCIENCE DEMONSTRATION PHASE, infrared: galaxies, DEGREE EXTRAGALACTIC SURVEY, galaxies: starburst, galaxies: high-redshift, DIGITAL SKY SURVEY, REDSHIFT SUBMILLIMETER GALAXIES, SPECTRAL ENERGY-DISTRIBUTIONS, NEAR-INFRARED COUNTERPARTS, STAR-FORMING GALAXIES, ARRAY CAMERA IRAC, SCUBA SUPER-MAP

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.95 MB

Citation

Please use this url to cite or link to this publication:

MLA
Kim, Sam, et al. “Spitzer-IRAC Identification of Herschel-Atlas SPIRE Sources.” ASTROPHYSICAL JOURNAL, vol. 756, no. 1, 2012, doi:10.1088/0004-637X/756/1/28.
APA
Kim, S., Wardlow, J. L., Cooray, A., Fleuren, S., Sutherland, W., Khostovan, A., … van der Werf, P. (2012). Spitzer-IRAC identification of Herschel-Atlas SPIRE sources. ASTROPHYSICAL JOURNAL, 756(1). https://doi.org/10.1088/0004-637X/756/1/28
Chicago author-date
Kim, Sam, Julie L Wardlow, Asantha Cooray, S Fleuren, W Sutherland, AA Khostovan, R Auld, et al. 2012. “Spitzer-IRAC Identification of Herschel-Atlas SPIRE Sources.” ASTROPHYSICAL JOURNAL 756 (1). https://doi.org/10.1088/0004-637X/756/1/28.
Chicago author-date (all authors)
Kim, Sam, Julie L Wardlow, Asantha Cooray, S Fleuren, W Sutherland, AA Khostovan, R Auld, Maarten Baes, RS Bussmann, S Buttiglione, A Cava, D Clements, A Dariush, G De Zotti, L Dunne, S Dye, S Eales, Jacopo Fritz, R Hopwood, E Ibar, R Ivison, M Jarvis, S Maddox, Michal Michałowski, E Pascale, M Pohlen, E Rigby, D Scott, DJB Smith, P Temi, and P van der Werf. 2012. “Spitzer-IRAC Identification of Herschel-Atlas SPIRE Sources.” ASTROPHYSICAL JOURNAL 756 (1). doi:10.1088/0004-637X/756/1/28.
Vancouver
1.
Kim S, Wardlow JL, Cooray A, Fleuren S, Sutherland W, Khostovan A, et al. Spitzer-IRAC identification of Herschel-Atlas SPIRE sources. ASTROPHYSICAL JOURNAL. 2012;756(1).
IEEE
[1]
S. Kim et al., “Spitzer-IRAC identification of Herschel-Atlas SPIRE sources,” ASTROPHYSICAL JOURNAL, vol. 756, no. 1, 2012.
@article{3075394,
  abstract     = {{We use Spitzer-IRAC data to identify near-infrared counterparts to submillimeter galaxies detected with Herschel-SPIRE at 250 mu m in the Herschel Astrophysical Terahertz Large Area Survey. Using a likelihood ratio analysis we identify 146 reliable IRAC counterparts to 123 SPIRE sources out of the 159 in the survey area. We find that, compared to the field population, the SPIRE counterparts occupy a distinct region of the 3.6 and 4.5 mu m color-magnitude space, and we use this property to identify 23 further counterparts to 13 SPIRE sources. The IRAC identification rate of 86% is significantly higher than those that have been demonstrated with wide-field ground-based optical and near-IR imaging of Herschel fields. We estimate a false identification rate of 3.6%, corresponding to 4-5 sources. Among the 73 counterparts that are undetected in Sloan Digital Sky Survey, 57 have both 3.6 and 4.5 mu m coverage. Of these, 43 have [3.6]-[4.5] > 0, indicating that they are likely to be at z greater than or similar to 1.4. Thus, similar to 40% of identified SPIRE galaxies are likely to be high-redshift (z greater than or similar to 1.4) sources. We discuss the statistical properties of the IRAC-identified SPIRE galaxy sample including far-IR luminosities, dust temperatures, star formation rates, and stellar masses. The majority of our detected galaxies have 10(10)-10(11) L-circle dot total IR luminosities and are not intense starbursting galaxies as those found at z similar to 2, but they have a factor of 2-3 above average specific star formation rates compared to near-IR selected galaxy samples.}},
  articleno    = {{28}},
  author       = {{Kim, Sam and Wardlow, Julie L and Cooray, Asantha and Fleuren, S and Sutherland, W and Khostovan, AA and Auld, R and Baes, Maarten and Bussmann, RS and Buttiglione, S and Cava, A and Clements, D and Dariush, A and De Zotti, G and Dunne, L and Dye, S and Eales, S and Fritz, Jacopo and Hopwood, R and Ibar, E and Ivison, R and Jarvis, M and Maddox, S and Michałowski, Michal and Pascale, E and Pohlen, M and Rigby, E and Scott, D and Smith, DJB and Temi, P and van der Werf, P}},
  issn         = {{0004-637X}},
  journal      = {{ASTROPHYSICAL JOURNAL}},
  keywords     = {{DEEP-FIELD-SOUTH,SCIENCE DEMONSTRATION PHASE,infrared: galaxies,DEGREE EXTRAGALACTIC SURVEY,galaxies: starburst,galaxies: high-redshift,DIGITAL SKY SURVEY,REDSHIFT SUBMILLIMETER GALAXIES,SPECTRAL ENERGY-DISTRIBUTIONS,NEAR-INFRARED COUNTERPARTS,STAR-FORMING GALAXIES,ARRAY CAMERA IRAC,SCUBA SUPER-MAP}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{16}},
  title        = {{Spitzer-IRAC identification of Herschel-Atlas SPIRE sources}},
  url          = {{http://dx.doi.org/10.1088/0004-637X/756/1/28}},
  volume       = {{756}},
  year         = {{2012}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: