The HectoMAP Cluster Survey. II. X-Ray Clusters

被引：14

作者：

Sohn, Jubee ^{[1
]}

Chon, Gayoung ^{[2
]}

Boehringer, Hans ^{[2
]}

Geller, Margaret J. ^{[1
]}

Diaferio, Antonaldo ^{[3
,4
]}

Hwang, Ho Seong ^{[5
]}

Utsumi, Yousuke ^{[6
]}

Rines, Kenneth J. ^{[7
]}

机构：

[1] Smithsonian Astrophys Observ, 60 Garden St, Cambridge, MA 02138 USA

[2] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[3] Univ Turin, Dipartimento Fis, Turin, Italy

[4] INFN, Sez Torino, Turin, Italy

[5] Korea Inst Adv Study, Quantum Universe Ctr, 85 Hoegiro, Seoul 02455, South Korea

[6] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, SLAC Natl Accelerator Lab, SLAC, 2575 Sand Hill Rd,M-S 29, Menlo Pk, CA 94025 USA

[7] Western Washington Univ, Dept Phys & Astron, Bellingham, WA 98225 USA

来源：

ASTROPHYSICAL JOURNAL | 2018年 / 855卷 / 02期

基金：

美国国家科学基金会; 日本学术振兴会; 美国国家航空航天局; 日本科学技术振兴机构;

关键词：

cosmology: observations; galaxies: clusters: general; galaxies: clusters: individual (A2198); large-scale structure of universe; X-rays: galaxies: clusters; GALAXY REDSHIFT SURVEY; ROSAT ALL-SKY; FIBER-FED SPECTROGRAPH; DEEP LENS SURVEY; RICH CLUSTERS; INFALL REGIONS; MASS PROFILES; CATALOG; EVOLUTION; UNIVERSE;

D O I：

10.3847/1538-4357/aaac7a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 3 x 10(-13) erg s(-1) cm(-2) and includes 15 clusters (7 newly discovered) with redshifts z <= 0.4. HectoMAP is a dense survey (similar to 1200 galaxies deg(-2)) that provides similar to 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-sigma(cl) scaling relation similar to that of known massive X-ray clusters. The HectoMAP X-ray cluster sample predicts similar to 12,000 +/- 3000 detectable X-ray clusters in RASS to the limiting flux, comparable with previous estimates.

引用

页数：18

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