The impact of high pressure cluster environment on the X-ray luminosity of Coma early-type galaxies

被引：6

作者：

Finoguenov, A

Miniati, F

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[2] Max Planck Inst Astrophys, D-85741 Garching, Germany

[3] Moscow Space Res Inst, Moscow 117810, Russia

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 418卷 / 01期

关键词：

clusters : individual : Coma; X-rays : galaxies; X-rays : ISM;

D O I：

10.1051/0004-6361:20040111

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an observational Study of the L-X vs. L(B)sigma(2) relation for early-type galaxies in the Coma cluster based Oil the XMM-Newton survey data. Compared to a similar relation for a sample dominated by field early-type galaxies. the Corna cluster galaxies show a flatter slope. Our calculations show that adiabatic compression produces a flattening, in the L-X vs. L(B)sigma(2) relation that is in remarkable agreement with the observed effect. Our scenario is further supported by the observed compactness of the X-ray emission of Coma galaxies.

引用

页码：L21 / L25

页数：5

共 28 条

[1] Linear regression for astronomical data with measurement errors and intrinsic scatter [J].