X-ray spectroscopy of the core of the perseus cluster with suzaku: Elemental abundances in the intracluster medium

T. Tamura, Y. Maeda, K. Mitsuda, A. C. Fabian, J. S. Sanders, Akihiro Furuzawa, J. P. Hughes, R. Iizuka, K. Matsushita, T. Tamagawa

Research output: Contribution to journalArticle

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Abstract

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 220kpc) 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.

Original languageEnglish
JournalAstrophysical Journal
Volume705
Issue number1 PART 2
DOIs
Publication statusPublished - 01-01-2009

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X-ray spectroscopy
spectroscopy
x rays
imaging spectrometers
helium
relative abundance
spectrometer
galaxies
stars
metal
metals
exposure

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Tamura, T. ; Maeda, Y. ; Mitsuda, K. ; Fabian, A. C. ; Sanders, J. S. ; Furuzawa, Akihiro ; Hughes, J. P. ; Iizuka, R. ; Matsushita, K. ; Tamagawa, T. / X-ray spectroscopy of the core of the perseus cluster with suzaku : Elemental abundances in the intracluster medium. In: Astrophysical Journal. 2009 ; Vol. 705, No. 1 PART 2.
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Tamura, T, Maeda, Y, Mitsuda, K, Fabian, AC, Sanders, JS, Furuzawa, A, Hughes, JP, Iizuka, R, Matsushita, K & Tamagawa, T 2009, 'X-ray spectroscopy of the core of the perseus cluster with suzaku: Elemental abundances in the intracluster medium', Astrophysical Journal, vol. 705, no. 1 PART 2. https://doi.org/10.1088/0004-637X/705/1/L62

X-ray spectroscopy of the core of the perseus cluster with suzaku : Elemental abundances in the intracluster medium. / Tamura, T.; Maeda, Y.; Mitsuda, K.; Fabian, A. C.; Sanders, J. S.; Furuzawa, Akihiro; Hughes, J. P.; Iizuka, R.; Matsushita, K.; Tamagawa, T.

In: Astrophysical Journal, Vol. 705, No. 1 PART 2, 01.01.2009.

Research output: Contribution to journalArticle

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T1 - X-ray spectroscopy of the core of the perseus cluster with suzaku

T2 - Elemental abundances in the intracluster medium

AU - Tamura, T.

AU - Maeda, Y.

AU - Mitsuda, K.

AU - Fabian, A. C.

AU - Sanders, J. S.

AU - Furuzawa, Akihiro

AU - Hughes, J. P.

AU - Iizuka, R.

AU - Matsushita, K.

AU - Tamagawa, T.

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AB - 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 220kpc) 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.

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