dc.contributor.author | Menéndez-Delmestre, Karín | en_US |
dc.contributor.author | Blain, Andrew W. | en_US |
dc.contributor.author | Alexander, Dave M. | en_US |
dc.contributor.author | Smail, Ian | en_US |
dc.contributor.author | Armus, Lee | en_US |
dc.contributor.author | Chapman, Scott C. | en_US |
dc.contributor.author | Frayer, Dave | en_US |
dc.contributor.author | Ivison, Rob J. | en_US |
dc.contributor.author | Teplitz, Harry | en_US |
dc.date.accessioned | 2014-03-12T19:20:57Z | |
dc.date.available | 2014-03-12T19:20:57Z | |
dc.date.issued | 2007-02-01 | en_US |
dc.identifier.citation | Menéndez-Delmestre, Karín, Andrew W. Blain, Dave M. Alexander, Ian Smail, et al. 2007. "Mid-Infrared Spectroscopy of High Redshift Submillimeter Galaxies: First Results." The Astrophysical Journal 655(2): 65-L68 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://dx.doi.org/10.1086/512038 | en_US |
dc.identifier.uri | http://hdl.handle.net/10222/45397 | |
dc.description.abstract | We present mid-infrared spectra of 5 submillimeter galaxies at z=0.65-2.38 taken with the Spitzer Space Telescope. Four of these sources, at z<1.5, have strong PAH features and their composite spectrum is well fitted by an M82-like spectrum with an additional power-law component consistent with that expected from AGN activity. Based on a comparison of the 7.7-micron PAH equivalent width and the PAH-to-infrared luminosity ratio of these galaxies with local templates, we conclude that these galaxies host both star-formation and AGN activity, with star-formation dominating the bolometric luminosity. The source at z=2.38 displays a Mrk231-type broad feature at restframe ~8 micron that does not conform to the typical 7.7/8.6 micron PAH complex in starburst galaxies, suggesting a more substantial AGN contribution. | en_US |
dc.title | Mid-Infrared Spectroscopy of High Redshift Submillimeter Galaxies: First Results | en_US |
dc.title.alternative | The Astrophysical Journal | en_US |
dc.type | article | en_US |
dc.identifier.volume | 655 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.startpage | 65 | en_US |