Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The HectoMAP Cluster Survey - II. X-ray Clusters   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 survey is complete
to a limiting flux of $\sim3 \times10^{-13}$ erg s$^{-1}$ cm$^{-2}$ and
includes 15 clusters (7 newly discovered) with redshift $z \leq 0.4$. HectoMAP
is a dense survey ($\sim1200$ galaxies deg$^{-2}$) that provides $\sim50$
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 $\sim
12000 \pm3000$ detectable X-ray clusters in the RASS to the limiting flux,
comparable with previous estimates.

8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs