Spitzer 70 and 160-micron Observations of the Extragalactic First Look Survey

Abstract

We present Spitzer 70um and 160um observations of the Spitzer extragalactic First Look Survey (xFLS). The data reduction techniques and the methods for producing co-added mosaics and source catalogs are discussed. Currently, 26% of the 70um sample and 49% of the 160um-selected sources have redshifts. The majority of sources with redshifts are star-forming galaxies at z<0.5, while about 5% have infrared colors consistent with AGN. The observed infrared colors agree with the spectral energy distribution (SEDs) of local galaxies previously determined from IRAS and ISO data. The average 160um/70um color temperature for the dust is Td~= 30+/-5 K, and the average 70um/24um spectral index is alpha~= 2.4+/-0.4. The observed infrared to radio correlation varies with redshift as expected out to z~1 based on the SEDs of local galaxies. The xFLS number counts at 70um and 160um are consistent within uncertainties with the models of galaxy evolution, but there are indications that the current models may require slight modifications. Deeper 70um observations are needed to constrain the models, and redshifts for the faint sources are required to measure the evolution of the infrared luminosity function.

16 pages including 11 figures. Accepted AJ

References in corpus (14)

• The Spitzer Space Telescope Mission
• A Redshift Survey of the Submillimeter Galaxy Population
• Reduction Algorithms for the Multiband Imaging Photometer for Spitzer
• The 24 Micron Source Counts in Deep Spitzer Surveys
• The Far- and Mid-Infrared/Radio Correlations in the Spitzer Extragalactic First Look Survey
• Point Source Extraction with MOPEX
• PAHs contribution to the infrared output energy of the Universe at z~2
• First Insights into the SWIRE Galaxy Populations
• Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph on the Spitzer Space Telescope: Early Results on Mrk 1014, Mrk 463, and UGC 5101
• The Nature of Faint 24 micron Sources Seen in Spitzer Observations of ELAIS-N1
• Far Infrared Source Counts at 70 and 160 microns in Spitzer Deep Surveys
• Confusion in the infrared: Spitzer and beyond
• Extragalactic Source Counts at 24 Microns in the Spitzer First Look Survey
• A far infrared view of the Lockman Hole from ISO 95 micron observations - II. Optical identifications and insights into the nature of the far-infrared sources

Cited by in corpus (99)

• Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars
• The Spitzer Legacy Survey of the HST-ACS 2 sq. deg. COSMOS Field: survey strategy and first analysis
• The Cosmic Infrared Background Resolved by Spitzer. Contributions of Mid-Infrared Galaxies to the Far-Infrared Background
• A Two-Parameter Model for the Infrared/Submillimeter/Radio Spectral Energy Distributions of Galaxies and AGN
• Dust Obscuration and Metallicity at High Redshift: New Inferences from UV, H-alpha, and 8 Micron Observations of z~2 Star-Forming Galaxies
• Evolution of the dusty infrared luminosity function from z=0 to z=2.3 using observations from Spitzer
• The 0.4 < z < 1.3 star formation history of the Universe as viewed in the far-infrared
• Deep Spitzer 24mic COSMOS imaging -- I. The evolution of luminous dusty galaxies - Confronting the models
• Astrophysical and Cosmological Information from Large-scale sub-mm Surveys of Extragalactic Sources
• The Complete Census of 70-um-Bright Debris Disks within the FEPS (Formation and Evolution of Planetary Systems) Spitzer Legacy Survey of Sun-like Stars
• Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. II. 70 micron Imaging
• A Lower-Limit Flux for the Extragalactic Background Light
• The Far-Infrared--Radio Correlation at High Redshifts: Physical Considerations and Prospects for the Square Kilometer Array
• Spitzer Mid-to-Far-Infrared Flux Densities of Distant Galaxies
• Observations of Mkn 421 with the MAGIC Telescope
• Spitzer Mid-Infrared Spectroscopy of Infrared Luminous Galaxies at z~2 II: Diagnostics
• A hybrid model for the evolution of galaxies and Active Galactic Nuclei in the infrared
• Spitzer 70-micron Source Counts in GOODS-North
• Star formation in quasar hosts and the origin of radio emission in radio-quiet quasars
• The Herschel-ATLAS: Extragalactic Number Counts from 250 to 500 Microns
• Widespread and Hidden Active Galactic Nuclei in Star-Forming Galaxies at Redshift > 0.3
• No Evolution in the IR-Radio Relation for IR-Luminous Galaxies at z<2 in the COSMOS Field
• The VLA-COSMOS Perspective on the IR-Radio Relation. I. New Constraints on Selection Biases and the Non-Evolution of the IR/Radio Properties of Star Forming and AGN Galaxies at Intermediate and High Redshift
• The nature of faint Spitzer-selected dust-obscured galaxies
• Detection of the Cosmic Far-Infrared Background in the AKARI Deep Field South
• Specific star-formation and the relation to stellar mass from 0<z<2 as seen in the far-infrared at 70 and 160mu
• Galaxy evolution in the infra-red: comparison of a hierarchical galaxy formation model with SPITZER data
• Supermassive Black Hole Growth in Starburst Galaxies over Cosmic Time: Constraints from the Deepest Chandra Fields
• Herschel-ATLAS: The far-infrared--radio correlation at z<0.5
• Correlated Anisotropies in the Cosmic Far-Infrared Background Detected by MIPS/Spitzer: Constraint on the Bias
• A backward evolution model for infrared surveys: the role of AGN- and Color-L_TIR distributions
• Spitzer Mid-Infrared Spectroscopy of Infrared Luminous Galaxies at z~2 III: Far-IR to Radio Properties and Optical Spectral Diagnostics
• The Spitzer Space Telescope Extra-Galactic First Look Survey: 24 micron data reduction, catalog, and source identification
• Cosmic star-formation history from a non-parametric inversion of infrared galaxy counts
• Planck Early Results: The Planck View of Nearby Galaxies
• Spitzer 70 and 160-micron Observations of the COSMOS Field
• Evolution of the Far-Infrared-Radio Correlation and Infrared SEDs of Massive Galaxies over z = 0 - 2
• Estimating the total infrared luminosity of galaxies up to z~2 from mid- and far-infrared observations
• Large amounts of optically-obscured star formation in the host galaxies of some type-2 quasars
• Submillimeter Number Counts at 250, 350 and 500 microns in BLAST data
• Spitzer and Herschel-based SEDs of 24um-bright z~0.3-3.0 starbursts and obscured quasars
• The HerMES SPIRE submillimeter local luminosity function
• No Evidence for Evolution in the Far-Infrared-Radio Correlation out to z ~ 2 in the eCDFS
• Strong PAH Emission from z~2 ULIRGs
• The temperature dependence of the far-infrared-radio correlation in the Herschel-ATLAS
• The Link Between SCUBA and Spitzer: Cold Galaxies at z<1
• Galaxy evolution from deep multi-wavelength Infrared surveys: a prelude to Herschel
• Break in the VHE spectrum of PG 1553+113: new upper limit on its redshift?
• Deep 610-MHz GMRT observations of the Spitzer extragalactic First Look Survey field - I. Observations, data analysis and source catalogue
• The HerMES sub-millimetre local and low-redshift luminosity functions
• Galactic Cepheids with Spitzer: II. Search for Extended Infrared Emission
• An accurate measurement of the anisotropies and mean level of the Cosmic Infrared Background at 100 and 160 um
• Infrared Spectral Energy Distributions of z~0.7 Star-Forming Galaxies
• The ~0.9 mJy sample: A mid-infrared spectroscopic catalog of 150 infrared-luminous, 24 micron selected galaxies at 0.3<z<3.5
• The Cosmic Far-Infrared Background Buildup Since Redshift 2 at 70 and 160 microns in the COSMOS and GOODS fields
• Planck intermediate results. VII. Statistical properties of infrared and radio extragalactic sources from the Planck Early Release Compact Source Catalogue at frequencies between 100 and 857 GHz
• MAMBO 1.2mm observations of luminous starbursts at z~2 in the SWIRE fields
• Modelling Galaxy and AGN Evolution in the IR: Black Hole Accretion versus Star-Formation Activity
• The Far-Infrared Luminosity Function from GOODS-N: Constraining the Evolution of Infrared Galaxies for z \leq 1
• The properties of 70micron selected high-redshift galaxies in the Extended Groth Strip
• Millimetre observations of a sample of high-redshift obscured quasars
• Radio source stacking and the infrared / radio correlation at microJy flux densities
• The Infrared Properties of Submillimeter Galaxies: Clues From Ultra-Deep 70 Micron Imaging
• Deep 610-MHz Giant Metrewave Radio Telescope observations of the Spitzer extragalactic First Look Survey field - III. The radio properties of Infrared-Faint Radio Sources
• An Infrared Comparison of Type-1 and Type-2 Quasars
• Evidence for Infrared-Faint Radio Sources as z > 1 Radio-Loud AGN
• ACCESS II: A Complete Census of Star Formation in the Shapley Supercluster - UV and IR Luminosity Functions
• The AKARI Deep Field South: Spitzer 24 and 70 micron Observations, Catalogs and Counts
• Evolution of the far-infrared luminosity functions in the Spitzer Wide-area Infrared Extragalactic Legacy Survey
• Spitzer Spectroscopy of Infrared-Luminous Galaxies: Diagnostics of AGN and Star Formation and Contribution to Total Infrared Luminosity
• Optical and Infrared Diagnostics of SDSS galaxies in the SWIRE Survey
• CO emission in optically obscured (type-2) quasars at redshifts z=0.1-0.4
• Power Spectrum Analysis of Far-IR Background Fluctuations in 160 Micron Maps From the Multiband Imaging Photometer for Spitzer
• Star-galaxy separation in the AKARI NEP Deep Field
• Gamma-rays as probes of the Universe
• The Nature of LoBAL QSOs: I. SEDs and mid-infrared spectral properties
• Deep u*- and g-band Imaging of the Spitzer Space Telescope First Look Survey Field : Observations and Source Catalogs
• Massive Lyman Break Galaxies at z~3 in the Spitzer Extragalactic First Look Survey
• The IRAC Dark Field; Far- Infrared to X-ray Data
• Gas and dust in a z=2.8 obscured quasar
• The Environment on few Mpc scales of Infrared Luminous Galaxies at Redshifts z~1
• MIPS 24 Micron Observations of the Hubble Deep Field South: Probing the IR-Radio Correlation of Galaxies at z > 1
• Spitzer MIPS 24 and 70 micron Imaging near the South Ecliptic Pole: Maps and Source Catalogs
• The stellar, molecular gas and dust content of the host galaxies of two z~2.8 dust obscured quasars
• A physical model for the origin of the diffuse cosmic infrared background
• AEGIS: Infrared Spectral Energy Distributions of MIPS 70micron selected sources
• A multi-wavelength analysis of Spitzer selected Coma Cluster galaxies: star formation rates and masses
• Clustering of the AKARI NEP Deep Field 24 $\mu$m selected galaxies
• Are z>2 Herschel galaxies proto-spheroids?
• The AKARI FU-HYU galaxy evolution program: First results from the GOODS-N field
• AKARI Far-Infrared Source Counts in the Lockman Hole
• Mid-to-Far Infrared Spectral Energy Distribution of Galaxies in Spitzer First Look Survey Field
• Confusion of extragalactic sources in the far infrared: a baseline assessment of the performance of PRIMAger in intensity and polarization
• Galaxy Colours in the AKARI Deep SEP Survey
• Spectroscopic follow-up of 70μm sources in Spitzer Wide-area Infrared Extragalactic Legacy Survey
• Microwave and radio emission of dusty star-forming galaxies: Implication for the cosmic radio background
• A multi--wavelength study of the IRAS Deep Survey galaxy sample II. The far-IR properties
• Estimating the confusion noise for the Millimetron space telescope
• A far-infrared survey at the North Galactic Pole I: Nearby star-forming galaxies and the effect of confused sources on source counts