X-RAY SPECTROSCOPY OF THE CORE OF THE PERSEUS CLUSTER WITH SUZAKU: ELEMENTAL ABUNDANCES IN THE INTRACLUSTER MEDIUM

Journal Article · Sun Nov 01 04:00:00 EST 2009 · Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637X/705/1/L62· OSTI ID:21378364

Tamura, T; Maeda, Y; Mitsuda, K ^[1]; Fabian, A C; Sanders, J S ^[2]; Furuzawa, A ^[3]; Hughes, J P ^[4]; Iizuka, R ^[5]; Matsushita, K ^[6]; Tamagawa, T ^[7]

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1. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510 (Japan)
2. Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom)
3. Department of Particle and Astrophysics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan)
4. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854-8019 (United States)
5. Department of Physics, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551 (Japan)
6. Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjyuku-ku, Tokyo 162-8601 (Japan)
7. RIKEN (Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

The results from Suzaku observations of the central region of the Perseus cluster are presented. Deep exposures with the X-ray Imaging Spectrometer provide high-quality X-ray spectra from the intracluster medium. X-ray lines from helium-like Cr and Mn have been detected significantly for the first time in clusters. In addition, elemental abundances of Ne, Mg, Si, S, Ar, Ca, Fe, and Ni are accurately measured within 10' (or 220 kpc) from the cluster center. The relative abundance ratios are found to be within a range of 0.8-1.5 times the solar value. These abundance ratios are compared with previous measurements, those in extremely metal-poor stars in the Galaxy, and theoretical models.

• OSTI ID: 21378364
• Journal Information: Astrophysical Journal (Online), Journal Name: Astrophysical Journal (Online) Journal Issue: 1 Vol. 705; ISSN 1538-4357
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ABUNDANCE
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELEMENTS
FLUIDS
GALAXIES
GALAXY CLUSTERS
GASES
HELIUM
NONMETALS
RARE GASES
SPECTRA
SPECTROSCOPY
STARS
X-RAY GALAXIES
X-RAY SPECTRA
X-RAY SPECTROSCOPY