×ばつ 10<SUP>-13</SUP> erg s<SUP>-1</SUP> cm<SUP>-2</SUP> and includes 15 clusters (7 newly discovered) with redshifts z ≤ 0.4. HectoMAP is a dense survey (∼1200 galaxies deg<SUP>-2</SUP>) 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 <SUB>X</SUB>-σ <SUB>cl</SUB> 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."> ×ばつ 10<SUP>-13</SUP> erg s<SUP>-1</SUP> cm<SUP>-2</SUP> and includes 15 clusters (7 newly discovered) with redshifts z ≤ 0.4. HectoMAP is a dense survey (∼1200 galaxies deg<SUP>-2</SUP>) 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 <SUB>X</SUB>-σ <SUB>cl</SUB> 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."> ×ばつ 10<SUP>-13</SUP> erg s<SUP>-1</SUP> cm<SUP>-2</SUP> and includes 15 clusters (7 newly discovered) with redshifts z ≤ 0.4. HectoMAP is a dense survey (∼1200 galaxies deg<SUP>-2</SUP>) 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 <SUB>X</SUB>-σ <SUB>cl</SUB> 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."/>
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The HectoMAP Cluster Survey. II. X-Ray Clusters

Abstract

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 ×ばつ 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.


Publication:
The Astrophysical Journal
Pub Date:
March 2018
DOI:

10.3847/1538-4357/aaac7a

10.48550/arXiv.1712.00029

arXiv:
arXiv:1712.00029
Bibcode:
2018ApJ...855..100S
Keywords:
  • cosmology: observations;
  • galaxies: clusters: general;
  • galaxies: clusters: individual: A2198;
  • large-scale structure of universe;
  • X-rays: galaxies: clusters;
  • Astrophysics - Cosmology and Nongalactic Astrophysics
E-Print:
submitted to ApJ, a revised version in response to the referee's comments, 18 pages, 12 figures, 4 tables, Table 3 will be available when the paper is accepted
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