An MMT hectospec redshift survey of 24 μm sources in the SPITZER First Look Survey

TY - JOUR

T1 - An MMT hectospec redshift survey of 24 μm sources in the SPITZER First Look Survey

AU - Papovich, Casey

AU - Cool, Richard

AU - Eisenstein, Daniel

AU - Le Floc'h, Emeric

AU - Xiaohui, F. A.N.

AU - Kennicutt, Robert C.

AU - Smith, J. D.T.

AU - Rieke, G. H.

AU - Vestergaard, Marianne

PY - 2006/7/1

Y1 - 2006/7/1

N2 - We present a spectroscopic survey using the MMT Hectospec fiber spectrograph of 24 μm sources selected with the Spitzer Space Telescope in the Spitzer First Look Survey. We report 1296 new redshifts for 24 μm sources, including 599 with fν(24 μm) ≥ 1 mJy. Combined with 291 additional redshifts for sources from the Sloan Digital Sky Survey (SDSS), our observing program was highly efficient and is ∼90% complete for i ≤ 21 mag and fν(24 μm) ≥ 1 mJy and 35% complete for i ≤ 20.5 mag and 0.3 mJy ≤ fν(24 μm) < 1.0 mJy. Our Hectospec survey includes 1078 and 168 objects spectroscopically classified as galaxies and QSOs, respectively. Combining the Hectospec and SDSS samples, we find 24 μm-selected galaxies to z gal ≤ 0.98 and QSOs to Z QSO ≤ 3.6, with mean redshifts of 〈z gal〉 = 0.27 and (Z QSO) = 1.1. As part of this publication, we include the redshift catalogs and the reduced spectra; these are also available through the NASA/IPAC Infrared Science Archive.

AB - We present a spectroscopic survey using the MMT Hectospec fiber spectrograph of 24 μm sources selected with the Spitzer Space Telescope in the Spitzer First Look Survey. We report 1296 new redshifts for 24 μm sources, including 599 with fν(24 μm) ≥ 1 mJy. Combined with 291 additional redshifts for sources from the Sloan Digital Sky Survey (SDSS), our observing program was highly efficient and is ∼90% complete for i ≤ 21 mag and fν(24 μm) ≥ 1 mJy and 35% complete for i ≤ 20.5 mag and 0.3 mJy ≤ fν(24 μm) < 1.0 mJy. Our Hectospec survey includes 1078 and 168 objects spectroscopically classified as galaxies and QSOs, respectively. Combining the Hectospec and SDSS samples, we find 24 μm-selected galaxies to z gal ≤ 0.98 and QSOs to Z QSO ≤ 3.6, with mean redshifts of 〈z gal〉 = 0.27 and (Z QSO) = 1.1. As part of this publication, we include the redshift catalogs and the reduced spectra; these are also available through the NASA/IPAC Infrared Science Archive.

KW - Galaxies: high-redshift

KW - Infrared: galaxies

UR - http://www.scopus.com/inward/record.url?scp=33749635826&partnerID=8YFLogxK

U2 - 10.1086/504598

DO - 10.1086/504598

M3 - Review

AN - SCOPUS:33749635826

SN - 0004-6256

VL - 132

SP - 231

EP - 241

JO - The Astronomical Journal

JF - The Astronomical Journal

IS - 1

ER -