148GHz ACT extragalactic sources catalog

DOI

We report on extragalactic sources detected in a 455deg^2^ map of the southern sky made with data at a frequency of 148GHz from the Atacama Cosmology Telescope (ACT) 2008 observing season. We provide a catalog of 157 sources with flux densities spanning two orders of magnitude: from 15mJy to 1500mJy. Comparison to other catalogs shows that 98% of the ACT detections correspond to sources detected at lower radio frequencies. Three of the sources appear to be associated with the brightest cluster galaxies of low-redshift X-ray-selected galaxy clusters. Estimates of the radio to millimeter-wave spectral indices and differential counts of the sources further bolster the hypothesis that they are nearly all radio sources, and that their emission is not dominated by re-emission from warm dust. In a bright (>50mJy) 148GHz selected sample with complete cross-identifications from the Australia Telescope 20GHz survey, we observe an average steepening of the spectra between 5, 20, and 148GHz with median spectral indices of {alpha}5-20=-0.07+/-0.06, {alpha}20-148=-0.39+/-0.04, and {alpha}5-148=-0.20+/-0.03. When the measured spectral indices are taken into account, the 148GHz differential source counts are consistent with previous measurements at 30GHz in the context of a source count model dominated by radio sources. Extrapolating with an appropriately rescaled model for the radio source counts, the Poisson contribution to the spatial power spectrum from synchrotron-dominated sources with flux density less than 20mJy is C^Sync^=(2.8+/-0.3)x10^-6^{mu}K^2^.

Cone search capability for table J/ApJ/731/100/tablea1 (ACT (Atacama Cosmology Telescope) high significance 148GHz extragalactic source catalog)

Identifier
DOI http://doi.org/10.26093/cds/vizier.17310100
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJ/731/100
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/731/100
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/731/100
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJ/731/100
Provenance
Creator Marriage T.A.; Juin J.B.; Lin Y.-T.; Marsden D.; Nolta M.R.; Partridge B.,Ade P.A.R.; Aguirre P.; Amiri M.; Appel J.W.; Barrientos L.F.,Battistelli E.S.; Bond J.R.; Brown B.; Burger B.; Chervenak J.; Das S.,Devlin M.J.; Dicker S.R.; Doriese W.B.; Dunkley J.; Dunner R.,Essinger-Hileman T.; Fisher R.P.; Fowler J.W.; Hajian A.; Halpern M.,Hasselfield M.; Hernandez-Monteagudo C.; Hilton G.C.; Hilton M.,Hincks A.D.; Hlozek R.; Huffenberger K.M.; Hughes D.H.; Hughes J.P.,Infante L.; Irwin K.D.; Kaul M.; Klein J.; Kosowsky A.; Lau J.M.; Limon M.,Lupton R.H.; Martocci K.; Mauskopf P.; Menanteau F.; Moodley K.,Moseley H.; Netterfield C.B.; Niemack M.D.; Page L.A.; Parker L.,Quintana H.; Reid B.; Sehgal N.; Sherwin B.D.; Sievers J.; Spergel D.N.,Staggs S.T.; Swetz D.S.; Switzer E.R.; Thornton R.; Trac H.; Tucker C.,Warne R.; Wilson G.; Wollack E.; Zhao Y.
Publisher CDS
Publication Year 2012
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; High Energy Astrophysics; Interstellar medium; Natural Sciences; Observational Astronomy; Physics