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The HectoMAP Cluster Survey. II. X-Ray Clusters

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [2];  [1];  [3];  [4];  [5];  [6]
  1. Smithsonian Astrophysical Observatory, Cambridge, MA (United States)
  2. Max-Planck-Institut fur extraterrestrische Physik, Garching (Germany)
  3. Univ. di Torino, Torino (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Torino (Italy)
  4. Korea Institute for Advanced Study, Seoul (Republic of Korea)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Western Washington Univ., Bellingham, WA (United States)
Here, we apply a friends-of-friends algorithm to the HectoMAP redshift survey and cross-identify associated X-ray emission in the ROSAT All-Sky Survey data (RASS). The resulting flux-limited catalog of X-ray cluster surveys is complete to a limiting flux of ~3 × 10–13 erg s–1 cm–2 and includes 15 clusters (7 newly discovered) with redshifts z ≤ 0.4. HectoMAP is a dense survey (~1200 galaxies deg–2) that provides ~50 members (median) in each X-ray cluster. We provide redshifts for the 1036 cluster members. Subaru/Hyper Suprime-Cam imaging covers three of the X-ray systems and confirms that they are impressive clusters. The HectoMAP X-ray clusters have an L X–σ cl scaling relation similar to that of known massive X-ray clusters. The HectoMAP X-ray cluster sample predicts ~12,000 ± 3000 detectable X-ray clusters in RASS to the limiting flux, comparable with previous estimates.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1437171
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 855; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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SHELS: Complete Redshift Surveys of Two Widely Separated Fields text January 2016
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Hectospec, the MMT's 300 Optical Fiber-Fed Spectrograph text January 2005
Percolation Galaxy Groups and Clusters in the SDSS Redshift Survey: Identification, Catalogs, and the Multiplicity Function text January 2006
A MaxBCG Catalog of 13,823 Galaxy Clusters from the Sloan Digital Sky Survey text January 2007
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Infall Regions of Galaxy Clusters text January 1997
Clustering of Galaxies in a Hierarchical Universe: III. Mock Redshift Surveys text January 1998
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Mass estimation in the outer regions of galaxy clusters text January 1999
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Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects journal October 2018
The HectoMAP Cluster Survey. I. redMaPPer Clusters journal April 2018
Quiescent Galaxy Size and Spectroscopic Evolution: Combining HSC Imaging and Hectospec Spectroscopy journal February 2019
A Spectroscopic Census of X-Ray Systems in the COSMOS Field journal August 2019
The HectoMAP Cluster Survey - I. redMaPPer Clusters text January 2017
Quiescent Galaxy Size and Spectroscopic Evolution: Combining HSC Imaging and Hectospec Spectroscopy text January 2018


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