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Title: X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field

Abstract

Abstract We present the first results of a pilot X-ray study of 37 rich galaxy clusters at 0.1 < z < 1.1 in the Hyper Suprime-Cam Subaru Strategic Program field. Diffuse X-ray emissions from these clusters were serendipitously detected in the XMM-Newton fields of view. We systematically analyze X-ray images of 37 clusters and emission spectra of a subsample of 17 clusters with high photon statistics by using the XMM-Newton archive data. The frequency distribution of the offset between the X-ray centroid or peak and the position of the brightest cluster galaxy was derived for the optical cluster sample. The fraction of relaxed clusters estimated from the X-ray peak offsets in 17 clusters is 29 ± 11(±13)%, which is smaller than that of the X-ray cluster samples such as HIFLUGCS. Since the optical cluster search is immune to the physical state of X-ray-emitting gas, it is likely to cover a larger range of the cluster morphology. We also derive the luminosity–temperature relation and found that the slope is marginally shallower than those of X-ray-selected samples and consistent with the self-similar model prediction of 2. Accordingly, our results show that the X-ray properties of the optical clusters are marginally different from thosemore » observed in the X-ray samples. The implication of the results and future prospects are briefly discussed.« less

Authors:
ORCiD logo [1];  [2];  [2];  [3]; ORCiD logo [4];  [5]; ORCiD logo [6];  [7];  [8];  [9];  [10];  [11];  [1];  [8];  [8];  [2]
  1. Department of Physics, Nara Women’s University, Kitauoyanishi-machi, Nara, Nara 630-8506, Japan
  2. Department of Physics, Nagoya University, Aichi 464-8602, Japan
  3. SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
  4. Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
  5. Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
  6. Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan, Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan, Core Research for Energetic Universe, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
  7. Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
  8. Graduate School of Natural Science & Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
  9. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
  10. Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
  11. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, Department of Astronomy, School of Science, Graduate University for Advanced Studies, 7-3-1 Hongo, Bunkyo-ku, Mitaka, Tokyo 181-8588, Japan
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1573429
Resource Type:
Published Article
Journal Name:
Publications of the Astronomical Society of Japan
Additional Journal Information:
Journal Name: Publications of the Astronomical Society of Japan; Journal ID: ISSN 0004-6264
Publisher:
Oxford University Press
Country of Publication:
Japan
Language:
English

Citation Formats

Ota, Naomi, Mitsuishi, Ikuyuki, Babazaki, Yasunori, Akamatsu, Hiroki, Ichinohe, Yuto, Ueda, Shutaro, Okabe, Nobuhiro, Oguri, Masamune, Fujimoto, Ryuichi, Hamana, Takashi, Miyaoka, Keita, Miyazaki, Satoshi, Otani, Hanae, Tanaka, Keigo, Tsuji, Ayumi, and Yoshida, Atsushi. X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field. Japan: N. p., 2019. Web. doi:10.1093/pasj/psz118.
Ota, Naomi, Mitsuishi, Ikuyuki, Babazaki, Yasunori, Akamatsu, Hiroki, Ichinohe, Yuto, Ueda, Shutaro, Okabe, Nobuhiro, Oguri, Masamune, Fujimoto, Ryuichi, Hamana, Takashi, Miyaoka, Keita, Miyazaki, Satoshi, Otani, Hanae, Tanaka, Keigo, Tsuji, Ayumi, & Yoshida, Atsushi. X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field. Japan. doi:10.1093/pasj/psz118.
Ota, Naomi, Mitsuishi, Ikuyuki, Babazaki, Yasunori, Akamatsu, Hiroki, Ichinohe, Yuto, Ueda, Shutaro, Okabe, Nobuhiro, Oguri, Masamune, Fujimoto, Ryuichi, Hamana, Takashi, Miyaoka, Keita, Miyazaki, Satoshi, Otani, Hanae, Tanaka, Keigo, Tsuji, Ayumi, and Yoshida, Atsushi. Thu . "X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field". Japan. doi:10.1093/pasj/psz118.
@article{osti_1573429,
title = {X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field},
author = {Ota, Naomi and Mitsuishi, Ikuyuki and Babazaki, Yasunori and Akamatsu, Hiroki and Ichinohe, Yuto and Ueda, Shutaro and Okabe, Nobuhiro and Oguri, Masamune and Fujimoto, Ryuichi and Hamana, Takashi and Miyaoka, Keita and Miyazaki, Satoshi and Otani, Hanae and Tanaka, Keigo and Tsuji, Ayumi and Yoshida, Atsushi},
abstractNote = {Abstract We present the first results of a pilot X-ray study of 37 rich galaxy clusters at 0.1 < z < 1.1 in the Hyper Suprime-Cam Subaru Strategic Program field. Diffuse X-ray emissions from these clusters were serendipitously detected in the XMM-Newton fields of view. We systematically analyze X-ray images of 37 clusters and emission spectra of a subsample of 17 clusters with high photon statistics by using the XMM-Newton archive data. The frequency distribution of the offset between the X-ray centroid or peak and the position of the brightest cluster galaxy was derived for the optical cluster sample. The fraction of relaxed clusters estimated from the X-ray peak offsets in 17 clusters is 29 ± 11(±13)%, which is smaller than that of the X-ray cluster samples such as HIFLUGCS. Since the optical cluster search is immune to the physical state of X-ray-emitting gas, it is likely to cover a larger range of the cluster morphology. We also derive the luminosity–temperature relation and found that the slope is marginally shallower than those of X-ray-selected samples and consistent with the self-similar model prediction of 2. Accordingly, our results show that the X-ray properties of the optical clusters are marginally different from those observed in the X-ray samples. The implication of the results and future prospects are briefly discussed.},
doi = {10.1093/pasj/psz118},
journal = {Publications of the Astronomical Society of Japan},
number = ,
volume = ,
place = {Japan},
year = {2019},
month = {11}
}

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DOI: 10.1093/pasj/psz118

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