期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 426, 期 3, 页码 1782-1792出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2012.21777.x
关键词
galaxies: evolution; submillimetre: galaxies
资金
- Science and Technology Facilities Council [ST/F002858/1, ST/I000976/1]
- Royal Society
- European Research Council
- ESO Paranal Observatory [LP175.A-0839]
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- American Museum of Natural History
- Astrophysical Institute Potsdam
- University of Basel
- University of Cambridge
- Case Western Reserve University
- University of Chicago
- Drexel University
- Fermilab
- Institute for Advanced Study
- Japan Participation Group
- Johns Hopkins University
- Joint Institute for Nuclear Astrophysics
- Kavli Institute for Particle Astrophysics and Cosmology
- Korean Scientist Group
- Chinese Academy of Sciences (LAMOST)
- Los Alamos National Laboratory
- Max-Planck-Institute for Astronomy (MPIA)
- Max-Planck-Institute for Astrophysics (MPA)
- New Mexico State University
- Ohio State University
- University of Pittsburgh
- University of Portsmouth
- Princeton University
- United States Naval Observatory
- University of Washington
- CSA (Canada)
- NAOC (China)
- CEA (France)
- CNES (France)
- CNRS (France)
- ASI (Italy)
- MCINN (Spain)
- SNSB (Sweden)
- STFC (UK)
- UKSA (UK)
- NASA (USA)
- STFC
- Grants-in-Aid for Scientific Research [24103003, 22340044, 24540230, 23684007] Funding Source: KAKEN
- STFC [ST/J001422/1, ST/G001774/1, ST/F002858/1, ST/H00260X/1, ST/H002456/1, ST/I005765/1, ST/I000976/1, PP/E003427/1, ST/I003673/1, ST/G004331/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002858/1, ST/H002456/1, ST/I003673/1, ST/I005765/1, ST/J001422/1, ST/G004331/1, ST/H00260X/1, ST/G001774/1, ST/I000976/1, PP/E003427/1] Funding Source: researchfish
- UK Space Agency [ST/G003874/1, ST/J004812/1] Funding Source: researchfish
We investigate the properties (e.g. star formation rate, dust attenuation, stellar mass and metallicity) of a sample of infrared (IR) luminous galaxies at z similar to 1 via near-IR spectroscopy with Subaru-FMOS. Our sample consists of Herschel SPIRE and Spitzer MIPS selected sources in the COSMOS field with photometric redshifts in the range of 0.7 < zphot < 1.8, which have been targeted in two pointings (0.5 deg2) with FMOS. We find a modest success rate for emission-line detections, with candidate Ha emission lines detected for 57 of 168 SPIRE sources (34 per cent). By stacking the near-IR spectra we directly measure the mean Balmer decrement for the Ha and H beta lines, finding a value of < E(B - V)> = 0.51 +/- 0.27 for < LIR > = 1012L circle dot sources at < z > = 1.36. By comparing star formation rates estimated from the IR and from the dust-uncorrected Ha line we find a strong relationship between dust attenuation and star formation rate. This relation is broadly consistent with that previously seen in star-forming galaxies at z similar to 0.1. Finally, we investigate the metallicity via the N2 ratio, finding that z similar to 1 IR-selected sources are indistinguishable from the local massmetallicity relation. We also find a strong correlation between dust attenuation and metallicity, with the most metal-rich IR sources experiencing the largest levels of dust attenuation.
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