CARMA FOLLOW-UP OF THE NORTHERN UNCONFIRMED PLANCK GALAXY CLUSTER CANDIDATES

Journal Article · Tue Apr 10 04:00:00 EDT 2012 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/749/1/46· OSTI ID:22020508

Muchovej, Stephen; Leitch, Erik; Culverhouse, Thomas ^[1]; Carpenter, John ^[2]; Sievers, Jonathan ^[3]

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1. California Institute of Technology, Owens Valley Radio Observatory, Big Pine, CA 93513 (United States)
2. California Institute of Technology, Department of Astronomy, Pasadena, CA 91125 (United States)
3. CITA, University of Toronto, 60 St. George St., Toronto ON, M5S 3H8 (Canada)

We present the Combined Array for Research in Millimeter-wave Astronomy (CARMA) observations of the three northern unconfirmed galaxy clusters discovered by the Planck satellite. We confirm the existence of two massive clusters (PLCKESZ G115.71+17.52 and PLCKESZ G121.11+57.01) at high significance. For these clusters, we present refined centroid locations from the 31 GHz CARMA data, as well as mass estimates obtained from a joint analysis of CARMA and Planck data. We do not detect the third candidate, PLCKESZ G189.84-37.24, and place an upper limit on its mass of M{sub 500} < 3.2 Multiplication-Sign 10{sup 14} M{sub Sun} at 68% confidence. Considering our data and the characteristics of the Planck Early Sunyaev-Zel'dovich (ESZ) Catalog, we conclude that this object is likely to be a cold-core object in the plane of our Galaxy. As a result, we estimate the purity of the ESZ Catalog to be greater than 99.5%.

• OSTI ID: 22020508
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 749; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASTRONOMY
CATALOGS
GALAXIES
GALAXY CLUSTERS
MASS