A Caltech Library Service

Distant ULIRGs in the SWIRE Survey

Lonsdale, Carol J. and Polletta, M. and Farrah, D. and Siana, B. and Gonzalez-Solares, E. and Smith, H. E. and Shupe, D. and Surace, J. and Fang, F. and Afonso-Luis, A. and Berta, S. and Rowan-Robinson, M. (2008) Distant ULIRGs in the SWIRE Survey. In: The second annual Spitzer Science Center conference : infrared diagnostics of galaxy evolution. ASP Conference Series. No.381. Astronomical Society of the Pacific , San Francisco, pp. 461-467. ISBN 978-1-58381-325-6.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Covering ~49 square degrees in 6 separate fields, the Spitzer Wide-area InfraRed Extragalactic (SWIRE) Legacy survey has the largest area among Spitzer’s “wedding cake” suite of extragalactic surveys. SWIRE is thus optimized for studies of large scale structure, population studies requiring excellent statistics, and searches for rare objects. We discuss the search for high redshift ultraluminous infrared galaxies (ULIRGs) with SWIRE. We have selected complete samples of F_(24μm) > 200 μJy, optically faint, candidate high redshift (z>1) ULIRGs, based on their mid-infrared spectral energy distributions (SEDs). These can be broadly categorized as star formation (SF)-dominated, based on the presence of a clear stellar peak at rest frame 1.6μm redshifted into the IRAC bands, or AGN-dominated if the SED rises featureless into the mid-infrared. AGN-dominated galaxies strongly dominate at the brightest 24μm fluxes, while SF-dominated objects rise rapidly in frequency as F_(24) drops, dominating the sample below 0.5 mJy. We derive photometric redshifts and luminosities for SFdominated objects sampling the z~1.2-3 range. Luminosity functions are being derived and compared with submm-selected samples at similar redshifts. The clustering, millimeter and IR spectral properties of the samples have also been investigated.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Lonsdale, Carol J.0000-0003-0898-406X
Polletta, M.0000-0001-7411-5386
Farrah, D.0000-0003-1748-2010
Siana, B.0000-0002-4935-9511
Shupe, D.0000-0003-4401-0430
Surace, J.0000-0001-7291-0087
Berta, S.0000-0002-0320-1532
Additional Information:© 2008 Astronomical Society of the Pacific. This work was supported by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Series Name:ASP Conference Series
Issue or Number:381
Record Number:CaltechAUTHORS:20100813-095836341
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19426
Deposited By: Tony Diaz
Deposited On:13 Aug 2010 21:42
Last Modified:30 Sep 2020 18:19

Repository Staff Only: item control page