Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRGs in the Boötes field

February 2009 • 2009ApJ...691.1846T

Authors • Tyler, Krystal D. • Le Floc'h, Emeric • Rieke, George H. • Dey, Arjun • Desai, Vandana • Brand, Kate • Borys, Colin • Jannuzi, Buell T. • Armus, Lee • Dole, Herve • Papovich, Casey • Brown, Michael J. I. • Blaylock, Myra • Higdon, Sarah J. U. • Higdon, James L. • Charmandaris, Vassilis • Ashby, Matthew L. N. • Smith, Howard A.

Abstract • We present new 70 and 160 μm observations of a sample of extremely red (R - [24] gsim 15 mag), mid-infrared bright, high-redshift (1.7 lsim z lsim 2.8) galaxies. All targets detected in the far-infrared exhibit rising spectral energy distributions (SEDs) consistent with dust emission from obscured active galactic nuclei (AGNs) and/or star-forming regions in luminous IR galaxies (LIRGs). We find that the SEDs of the high-redshift sources are more similar to canonical AGN-dominated local ultraluminous IR galaxies (ULIRGs) with significant warm dust components than to typical local star-forming ULIRGs. The inferred IR (8-1000 μm) bolometric luminosities are found to be L _bol ~ 4 × 10¹² L _sun to ~3 × 10¹³ L _sun (ULIRGs/hyper-luminous IR galaxies (HyLIRGs)), representing the first robust constraints on L _bol for this class of object.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2009ApJ...691.1846T
• PDF https://iopscience.iop.org/article/10.1088/0004-637X/691/2/1846/pdf
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/2009ApJ...691.1846T
• DATA https://irsa.ipac.caltech.edu/bibdata/2009/T/2009ApJ...691.1846T.html
• ELECTR https://iopscience.iop.org/article/10.1088/0004-637X/691/2/1846