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First insights into the Spitzer Wide-Area Infrared Extragalactic Legacy Survey (SWIRE) galaxy populations

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posted on 2023-06-08, 08:09 authored by Carol Lonsdale, Maria del Carmen Polletta, Jason Surace, Dave Shupe, Fan Fang, C Kevin Xu, Harding E Smith, Brian Siana, Michael Rowan-Robinson, Tom Babbedge, Seb OliverSeb Oliver, Francesca Pozzi, Payam Davoodi, Frazer Owen, Deborah Padgett, Dave Frayer, Tom Jarrett, Frank Masci, JoAnne O'Linger, Tim Conrow, Duncan Farrah, Glenn Morrison, Nick Gautier, Alberto Franceschini, Stefano Berta, Ismael Perez-Fournon, Evanthia Hatziminaoglou, Alejandro Afonso-Luis, Herve Dole, Gordon Stacey, Steve Serjeant, Marguerite Pierre, Matt Griffin, Rick Puetter
We characterize the Spitzer Wide-area Infrared Extragalactic Legacy Survey (SWIRE) galaxy populations in the SWIRE validation field within the Lockman Hole, based on the 3.6-24 µm Spitzer data and deep U, g', r', i' optical imaging within an area ~1/3 deg2 for ~16,000 Spitzer SWIRE sources. The entire SWIRE survey will discover over 2.3 million galaxies at 3.6 µm and almost 350,000 at 24 µm ~70,000 of these will be five-band 3.6-24 µm detections. The colors cover a broad range, generally well represented by redshifted spectral energy distributions of known galaxy populations; however, significant samples of unusually blue objects in the [3.6]-[4.5] color are found, as well as many objects very red in the 3.6-24 µm mid-IR. Nine of these are investigated and are interpreted as star-forming systems, starbursts, and active galactic nuclei (AGNs) from z=0.37 to 2.8, with luminosities from LIR=1010.3 to 1013.7 Lsolar.

History

Publication status

  • Published

File Version

  • Published version

Journal

Astrophysical Journal Supplement Series

ISSN

0067-0049

Publisher

Institute of Physics

Issue

1

Volume

154

Page range

54

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-11-18

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