X-ray imaging-spectroscopy of Abell 1835

被引：460

作者：

Peterson, JR

Paerels, FBS

Kaastra, JS

Arnaud, M

Reiprich, TH

Fabian, AC

Mushotzky, RF

Jernigan, JG

Sakelliou, I

机构：

[1] Columbia Dept Phys, New York, NY 10027 USA

[2] Astrophys Lab, New York, NY 10027 USA

[3] SRON, Space Res Lab, NL-3584 CA Utrecht, Netherlands

[4] CEA, DSM, DAPNIA, Serv Astrophys, F-91191 Gif Sur Yvette, France

[5] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[6] Astron Inst, Cambridge CB3 OHA, England

[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[8] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[9] UCL, Mullard Space Sci Lab, Surrey RH5 6NT, England

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 01期

关键词：

galaxy clusters : individual : Abell 1835; galaxies : cooling flows; techniques : spectroscopic;

D O I：

10.1051/0004-6361:20000021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present detailed spatially-resolved spectroscopy results of the observation of Abell 1835 using the European Photon Imaging Cameras (EPIC) and the Reflection Grating Spectrometers (RGS) on the XMM-Newton observatory. Abell 1835 is a luminous (10(46) ergs s(-1)), medium redshift (z = 0.2523), X-ray emitting cluster of galaxies. The observations support the interpretation that large amounts of cool gas are present in a multi-phase medium surrounded by a hot (kT(e) = 8.2 keV) outer envelope. We detect O VIII Ly alpha and two Fe XXIV complexes in the RGS spectrum. The emission measure of the cool gas below kT(e) = 2.7 keV is much lower than expected from standard cooling-flow models, suggesting either a more complicated cooling process than simple isobaric radiative cooling or differential cold absorption of the cooler gas.

引用

页码：L104 / L109

页数：6

共 37 条

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