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Title: The Atacama Cosmology Telescope: The Two-season ACTPol Sunyaev–Zel’dovich Effect Selected Cluster Catalog

Abstract

We introduce a catalog of 182 galaxy clusters detected through the Sunyaev–Zel'dovich (SZ) effect by the Atacama Cosmology Telescope in a contiguous 987.5 deg 2 field. The clusters were detected as SZ decrements by applying a matched filter to 148 GHz maps that combine the original ACT equatorial survey with data from the first two observing seasons using the ACTPol receiver. Optical/IR confirmation and redshift measurements come from a combination of large public surveys and our own follow-up observations. Where necessary, we calculated photometric redshifts for clusters using a pipeline that achieves accuracy Δz/(1 + z) = 0.015 when tested on Sloan Digital Sky Survey data. Under the assumption that clusters can be described by the so-called universal pressure profile (UPP) and its associated mass scaling law, the full signal-to-noise ratio > 4 sample spans the mass range $$1.6\lt {M}_{500{\rm{c}}}^{\mathrm{UPP}}/{10}^{14}\,{M}_{\odot }\lt 9.1$$, with median $${M}_{500{\rm{c}}}^{\mathrm{UPP}}=3.1\times {10}^{14}\,{M}_{\odot }$$. The sample covers the redshift range 0.1 < z < 1.4 (median z = 0.49), and 28 clusters are new discoveries (median z = 0.80). We compare our catalog with other overlapping cluster samples selected using the SZ, optical, and X-ray wavelengths. We find that the ratio of the UPP-based SZ mass to richness-based weak-lensing mass is $$\langle {M}_{500{\rm{c}}}^{\mathrm{UPP}}\rangle /\langle {M}_{500{\rm{c}}}^{\lambda \mathrm{WL}}\rangle =0.68\pm 0.11$$. After applying this calibration, the mass distribution for clusters with M 500c > 4 × 10 14 M is consistent with the number of such clusters found in the South Pole Telescope SZ survey.

Authors:
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Publication Date:
Research Org.:
Carnegie Mellon Univ., Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Contributing Org.:
ACT Collaboration
OSTI Identifier:
1542032
Grant/Contract Number:  
SC0011114
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
Journal Volume: 235; Journal Issue: 1; Journal ID: ISSN 1538-4365
Publisher:
American Astronomical Society/IOP
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology: large-scale structure of universe; cosmology: observations; galaxies: clusters: general

Citation Formats

Hilton, Matt, Hasselfield, Matthew, Sifón, Cristóbal, Battaglia, Nicholas, Aiola, Simone, Bharadwaj, V., Bond, J. Richard, Choi, Steve K., Crichton, Devin, Datta, Rahul, Devlin, Mark J., Dunkley, Joanna, Dünner, Rolando, Gallardo, Patricio A., Gralla, Megan, Hincks, Adam D., Ho, Shuay-Pwu P., Hubmayr, Johannes, Huffenberger, Kevin M., Hughes, John P., Koopman, Brian J., Kosowsky, Arthur, Louis, Thibaut, Madhavacheril, Mathew S., Marriage, Tobias A., Maurin, Loïc, McMahon, Jeff, Miyatake, Hironao, Moodley, Kavilan, Næss, Sigurd, Nati, Federico, Newburgh, Laura, Niemack, Michael D., Oguri, Masamune, Page, Lyman A., Partridge, Bruce, Schmitt, Benjamin L., Sievers, Jon, Spergel, David N., Staggs, Suzanne T., Trac, Hy, Engelen, Alexander van, Vavagiakis, Eve M., and Wollack, Edward J. The Atacama Cosmology Telescope: The Two-season ACTPol Sunyaev–Zel’dovich Effect Selected Cluster Catalog. United States: N. p., 2018. Web. doi:10.3847/1538-4365/aaa6cb.
Hilton, Matt, Hasselfield, Matthew, Sifón, Cristóbal, Battaglia, Nicholas, Aiola, Simone, Bharadwaj, V., Bond, J. Richard, Choi, Steve K., Crichton, Devin, Datta, Rahul, Devlin, Mark J., Dunkley, Joanna, Dünner, Rolando, Gallardo, Patricio A., Gralla, Megan, Hincks, Adam D., Ho, Shuay-Pwu P., Hubmayr, Johannes, Huffenberger, Kevin M., Hughes, John P., Koopman, Brian J., Kosowsky, Arthur, Louis, Thibaut, Madhavacheril, Mathew S., Marriage, Tobias A., Maurin, Loïc, McMahon, Jeff, Miyatake, Hironao, Moodley, Kavilan, Næss, Sigurd, Nati, Federico, Newburgh, Laura, Niemack, Michael D., Oguri, Masamune, Page, Lyman A., Partridge, Bruce, Schmitt, Benjamin L., Sievers, Jon, Spergel, David N., Staggs, Suzanne T., Trac, Hy, Engelen, Alexander van, Vavagiakis, Eve M., & Wollack, Edward J. The Atacama Cosmology Telescope: The Two-season ACTPol Sunyaev–Zel’dovich Effect Selected Cluster Catalog. United States. doi:10.3847/1538-4365/aaa6cb.
Hilton, Matt, Hasselfield, Matthew, Sifón, Cristóbal, Battaglia, Nicholas, Aiola, Simone, Bharadwaj, V., Bond, J. Richard, Choi, Steve K., Crichton, Devin, Datta, Rahul, Devlin, Mark J., Dunkley, Joanna, Dünner, Rolando, Gallardo, Patricio A., Gralla, Megan, Hincks, Adam D., Ho, Shuay-Pwu P., Hubmayr, Johannes, Huffenberger, Kevin M., Hughes, John P., Koopman, Brian J., Kosowsky, Arthur, Louis, Thibaut, Madhavacheril, Mathew S., Marriage, Tobias A., Maurin, Loïc, McMahon, Jeff, Miyatake, Hironao, Moodley, Kavilan, Næss, Sigurd, Nati, Federico, Newburgh, Laura, Niemack, Michael D., Oguri, Masamune, Page, Lyman A., Partridge, Bruce, Schmitt, Benjamin L., Sievers, Jon, Spergel, David N., Staggs, Suzanne T., Trac, Hy, Engelen, Alexander van, Vavagiakis, Eve M., and Wollack, Edward J. Thu . "The Atacama Cosmology Telescope: The Two-season ACTPol Sunyaev–Zel’dovich Effect Selected Cluster Catalog". United States. doi:10.3847/1538-4365/aaa6cb. https://www.osti.gov/servlets/purl/1542032.
@article{osti_1542032,
title = {The Atacama Cosmology Telescope: The Two-season ACTPol Sunyaev–Zel’dovich Effect Selected Cluster Catalog},
author = {Hilton, Matt and Hasselfield, Matthew and Sifón, Cristóbal and Battaglia, Nicholas and Aiola, Simone and Bharadwaj, V. and Bond, J. Richard and Choi, Steve K. and Crichton, Devin and Datta, Rahul and Devlin, Mark J. and Dunkley, Joanna and Dünner, Rolando and Gallardo, Patricio A. and Gralla, Megan and Hincks, Adam D. and Ho, Shuay-Pwu P. and Hubmayr, Johannes and Huffenberger, Kevin M. and Hughes, John P. and Koopman, Brian J. and Kosowsky, Arthur and Louis, Thibaut and Madhavacheril, Mathew S. and Marriage, Tobias A. and Maurin, Loïc and McMahon, Jeff and Miyatake, Hironao and Moodley, Kavilan and Næss, Sigurd and Nati, Federico and Newburgh, Laura and Niemack, Michael D. and Oguri, Masamune and Page, Lyman A. and Partridge, Bruce and Schmitt, Benjamin L. and Sievers, Jon and Spergel, David N. and Staggs, Suzanne T. and Trac, Hy and Engelen, Alexander van and Vavagiakis, Eve M. and Wollack, Edward J.},
abstractNote = {We introduce a catalog of 182 galaxy clusters detected through the Sunyaev–Zel'dovich (SZ) effect by the Atacama Cosmology Telescope in a contiguous 987.5 deg2 field. The clusters were detected as SZ decrements by applying a matched filter to 148 GHz maps that combine the original ACT equatorial survey with data from the first two observing seasons using the ACTPol receiver. Optical/IR confirmation and redshift measurements come from a combination of large public surveys and our own follow-up observations. Where necessary, we calculated photometric redshifts for clusters using a pipeline that achieves accuracy Δz/(1 + z) = 0.015 when tested on Sloan Digital Sky Survey data. Under the assumption that clusters can be described by the so-called universal pressure profile (UPP) and its associated mass scaling law, the full signal-to-noise ratio > 4 sample spans the mass range $1.6\lt {M}_{500{\rm{c}}}^{\mathrm{UPP}}/{10}^{14}\,{M}_{\odot }\lt 9.1$, with median ${M}_{500{\rm{c}}}^{\mathrm{UPP}}=3.1\times {10}^{14}\,{M}_{\odot }$. The sample covers the redshift range 0.1 < z < 1.4 (median z = 0.49), and 28 clusters are new discoveries (median z = 0.80). We compare our catalog with other overlapping cluster samples selected using the SZ, optical, and X-ray wavelengths. We find that the ratio of the UPP-based SZ mass to richness-based weak-lensing mass is $\langle {M}_{500{\rm{c}}}^{\mathrm{UPP}}\rangle /\langle {M}_{500{\rm{c}}}^{\lambda \mathrm{WL}}\rangle =0.68\pm 0.11$. After applying this calibration, the mass distribution for clusters with M 500c > 4 × 1014 M⊙ is consistent with the number of such clusters found in the South Pole Telescope SZ survey.},
doi = {10.3847/1538-4365/aaa6cb},
journal = {The Astrophysical Journal. Supplement Series (Online)},
issn = {1538-4365},
number = 1,
volume = 235,
place = {United States},
year = {2018},
month = {3}
}

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