The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey

Tobias A. Marriage; Jean Baptiste Juin; Yen Ting Lin; Danica Marsden; Michael R. Nolta; Bruce Partridge; Peter A.R. Ade; Paula Aguirre; Mandana Amiri; John William Appel; L. Felipe Barrientos; Elia S. Battistelli; John R. Bond; Ben Brown; Bryce Burger; Jay Chervenak; Sudeep Das; Mark J. Devlin; Simon R. Dicker; W. Bertrand Doriese; Joanna Dunkley; Rolando Dünner; Thomas Essinger-Hileman; Ryan P. Fisher; Joseph W. Fowler; Amir Hajian; Mark Halpern; Matthew Hasselfield; Carlos Hernndez-Monteagudo; Gene C. Hilton; Matt Hilton; Adam D. Hincks; Renée Hlozek; Kevin M. Huffenberger; David Handel Hughes; John P. Hughes; Leopoldo Infante; Kent D. Irwin; Madhuri Kaul; Jeff Klein; Arthur Kosowsky; Judy M. Lau; Michele Limon; Robert H. Lupton; Krista Martocci; Phil Mauskopf; Felipe Menanteau; Kavilan Moodley; Harvey Moseley; Calvin B. Netterfield; Michael D. Niemack; Lyman A. Page; Lucas Parker; Hernan Quintana; Beth Reid; Neelima Sehgal; Blake D. Sherwin; Jon Sievers; David N. Spergel; Suzanne T. Staggs; Daniel S. Swetz; Eric R. Switzer; Robert Thornton; Hy Trac; Carole Tucker; Ryan Warne; Grant Wilson; Ed Wollack; Yue Zhao

doi:10.1088/0004-637X/731/2/100

The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey

Tobias A. Marriage, Jean Baptiste Juin, Yen Ting Lin, Danica Marsden, Michael R. Nolta, Bruce Partridge, Peter A.R. Ade, Paula Aguirre, Mandana Amiri, John William Appel, L. Felipe Barrientos, Elia S. Battistelli, John R. Bond, Ben Brown, Bryce Burger, Jay Chervenak, Sudeep Das, Mark J. Devlin, Simon R. Dicker, W. Bertrand DorieseJoanna Dunkley, Rolando Dünner, Thomas Essinger-Hileman, Ryan P. Fisher, Joseph W. Fowler, Amir Hajian, Mark Halpern, Matthew Hasselfield, Carlos Hernndez-Monteagudo, Gene C. Hilton, Matt Hilton, Adam D. Hincks, Renée Hlozek, Kevin M. Huffenberger, David Handel Hughes, John P. Hughes, Leopoldo Infante, Kent D. Irwin, Madhuri Kaul, Jeff Klein, Arthur Kosowsky, Judy M. Lau, Michele Limon, Robert H. Lupton, Krista Martocci, Phil Mauskopf, Felipe Menanteau, Kavilan Moodley, Harvey Moseley, Calvin B. Netterfield, Michael D. Niemack, Lyman A. Page, Lucas Parker, Hernan Quintana, Beth Reid, Neelima Sehgal, Blake D. Sherwin, Jon Sievers, David N. Spergel, Suzanne T. Staggs, Daniel S. Swetz, Eric R. Switzer, Robert Thornton, Hy Trac, Carole Tucker, Ryan Warne, Grant Wilson, Ed Wollack, Yue Zhao

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Abstract

We report on extragalactic sources detected in a 455 deg² 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 15 mJy to 1500 mJy. 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 (>50 mJy) 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 α_5-20 = -0.07 ± 0.06, α_20-148 = -0.39 ± 0.04, and α_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 30 GHz 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 20 mJy is C ^Sync = (2.8 ± 0.3) × 10^-6μK ².

Original language	English (US)
Article number	100
Journal	Astrophysical Journal
Volume	731
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/731/2/100
State	Published - Apr 20 2011

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

cosmic background radiation
galaxies: active
radio continuum: galaxies
surveys

Access to Document

10.1088/0004-637X/731/2/100

Cite this

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., ... Zhao, Y. (2011). The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey. Astrophysical Journal, 731(2), Article 100. https://doi.org/10.1088/0004-637X/731/2/100

@article{6ed13445132a4512a5fabac6609fbfae,

title = "The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey",

abstract = "We report on extragalactic sources detected in a 455 deg2 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 15 mJy to 1500 mJy. 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 (>50 mJy) 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 α5-20 = -0.07 ± 0.06, α20-148 = -0.39 ± 0.04, and α5-148 = -0.20 ± 0.03. When the measured spectral indices are taken into account, the 148GHz differential source counts are consistent with previous measurements at 30 GHz 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 20 mJy is C Sync = (2.8 ± 0.3) × 10-6μK 2.",

keywords = "cosmic background radiation, galaxies: active, radio continuum: galaxies, surveys",

author = "Marriage, {Tobias A.} and Juin, {Jean Baptiste} and Lin, {Yen Ting} and Danica Marsden and Nolta, {Michael R.} and Bruce Partridge and Ade, {Peter A.R.} and Paula Aguirre and Mandana Amiri and Appel, {John William} and Barrientos, {L. Felipe} and Battistelli, {Elia S.} and Bond, {John R.} and Ben Brown and Bryce Burger and Jay Chervenak and Sudeep Das and Devlin, {Mark J.} and Dicker, {Simon R.} and Doriese, {W. Bertrand} and Joanna Dunkley and Rolando D{\"u}nner and Thomas Essinger-Hileman and Fisher, {Ryan P.} and Fowler, {Joseph W.} and Amir Hajian and Mark Halpern and Matthew Hasselfield and Carlos Hernndez-Monteagudo and Hilton, {Gene C.} and Matt Hilton and Hincks, {Adam D.} and Ren{\'e}e Hlozek and Huffenberger, {Kevin M.} and Hughes, {David Handel} and Hughes, {John P.} and Leopoldo Infante and Irwin, {Kent D.} and Madhuri Kaul and Jeff Klein and Arthur Kosowsky and Lau, {Judy M.} and Michele Limon and Lupton, {Robert H.} and Krista Martocci and Phil Mauskopf and Felipe Menanteau and Kavilan Moodley and Harvey Moseley and Netterfield, {Calvin B.} and Niemack, {Michael D.} and Page, {Lyman A.} and Lucas Parker and Hernan Quintana and Beth Reid and Neelima Sehgal and Sherwin, {Blake D.} and Jon Sievers and Spergel, {David N.} and Staggs, {Suzanne T.} and Swetz, {Daniel S.} and Switzer, {Eric R.} and Robert Thornton and Hy Trac and Carole Tucker and Ryan Warne and Grant Wilson and Ed Wollack and Yue Zhao",

year = "2011",

month = apr,

day = "20",

doi = "10.1088/0004-637X/731/2/100",

language = "English (US)",

volume = "731",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Marriage, TA, Juin, JB, Lin, YT, Marsden, D, Nolta, MR, Partridge, B, Ade, PAR, Aguirre, P, Amiri, M, Appel, JW, Barrientos, LF, Battistelli, ES, Bond, JR, Brown, B, Burger, B, Chervenak, J, Das, S, Devlin, MJ, Dicker, SR, Doriese, WB, Dunkley, J, Dünner, R, Essinger-Hileman, T, Fisher, RP, Fowler, JW, Hajian, A, Halpern, M, Hasselfield, M, Hernndez-Monteagudo, C, Hilton, GC, Hilton, M, Hincks, AD, Hlozek, R, Huffenberger, KM, Hughes, DH, Hughes, JP, Infante, L, Irwin, KD, Kaul, M, Klein, J, Kosowsky, A, Lau, JM, Limon, M, Lupton, RH, Martocci, K, Mauskopf, P, Menanteau, F, Moodley, K, Moseley, H, Netterfield, CB, Niemack, MD, Page, LA, Parker, L, Quintana, H, Reid, B, Sehgal, N, Sherwin, BD, Sievers, J, Spergel, DN, Staggs, ST, Swetz, DS, Switzer, ER, Thornton, R, Trac, H, Tucker, C, Warne, R, Wilson, G, Wollack, E & Zhao, Y 2011, 'The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey', Astrophysical Journal, vol. 731, no. 2, 100. https://doi.org/10.1088/0004-637X/731/2/100

TY - JOUR

T1 - The Atacama Cosmology Telescope

T2 - Extragalactic sources at 148GHz in the 2008 survey

AU - Marriage, Tobias A.

AU - Juin, Jean Baptiste

AU - Lin, Yen Ting

AU - Marsden, Danica

AU - Nolta, Michael R.

AU - Partridge, Bruce

AU - Ade, Peter A.R.

AU - Aguirre, Paula

AU - Amiri, Mandana

AU - Appel, John William

AU - Barrientos, L. Felipe

AU - Battistelli, Elia S.

AU - Bond, John R.

AU - Brown, Ben

AU - Burger, Bryce

AU - Chervenak, Jay

AU - Das, Sudeep

AU - Devlin, Mark J.

AU - Dicker, Simon R.

AU - Doriese, W. Bertrand

AU - Dunkley, Joanna

AU - Dünner, Rolando

AU - Essinger-Hileman, Thomas

AU - Fisher, Ryan P.

AU - Fowler, Joseph W.

AU - Hajian, Amir

AU - Halpern, Mark

AU - Hasselfield, Matthew

AU - Hernndez-Monteagudo, Carlos

AU - Hilton, Gene C.

AU - Hilton, Matt

AU - Hincks, Adam D.

AU - Hlozek, Renée

AU - Huffenberger, Kevin M.

AU - Hughes, David Handel

AU - Hughes, John P.

AU - Infante, Leopoldo

AU - Irwin, Kent D.

AU - Kaul, Madhuri

AU - Klein, Jeff

AU - Kosowsky, Arthur

AU - Lau, Judy M.

AU - Limon, Michele

AU - Lupton, Robert H.

AU - Martocci, Krista

AU - Mauskopf, Phil

AU - Menanteau, Felipe

AU - Moodley, Kavilan

AU - Moseley, Harvey

AU - Netterfield, Calvin B.

AU - Niemack, Michael D.

AU - Page, Lyman A.

AU - Parker, Lucas

AU - Quintana, Hernan

AU - Reid, Beth

AU - Sehgal, Neelima

AU - Sherwin, Blake D.

AU - Sievers, Jon

AU - Spergel, David N.

AU - Staggs, Suzanne T.

AU - Swetz, Daniel S.

AU - Switzer, Eric R.

AU - Thornton, Robert

AU - Trac, Hy

AU - Tucker, Carole

AU - Warne, Ryan

AU - Wilson, Grant

AU - Wollack, Ed

AU - Zhao, Yue

PY - 2011/4/20

Y1 - 2011/4/20

N2 - We report on extragalactic sources detected in a 455 deg2 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 15 mJy to 1500 mJy. 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 (>50 mJy) 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 α5-20 = -0.07 ± 0.06, α20-148 = -0.39 ± 0.04, and α5-148 = -0.20 ± 0.03. When the measured spectral indices are taken into account, the 148GHz differential source counts are consistent with previous measurements at 30 GHz 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 20 mJy is C Sync = (2.8 ± 0.3) × 10-6μK 2.

AB - We report on extragalactic sources detected in a 455 deg2 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 15 mJy to 1500 mJy. 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 (>50 mJy) 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 α5-20 = -0.07 ± 0.06, α20-148 = -0.39 ± 0.04, and α5-148 = -0.20 ± 0.03. When the measured spectral indices are taken into account, the 148GHz differential source counts are consistent with previous measurements at 30 GHz 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 20 mJy is C Sync = (2.8 ± 0.3) × 10-6μK 2.

KW - cosmic background radiation

KW - galaxies: active

KW - radio continuum: galaxies

KW - surveys

UR - http://www.scopus.com/inward/record.url?scp=79955039869&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955039869&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/731/2/100

DO - 10.1088/0004-637X/731/2/100

M3 - Article

AN - SCOPUS:79955039869

SN - 0004-637X

VL - 731

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 100

ER -

The Atacama Cosmology Telescope: Extragalactic sources at 148GHz in the 2008 survey

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