X-RAY-EMISSION FROM THE STARBURST GALAXY-IC-342

被引：26

作者：

BREGMAN, JN ^{[1
]}

COX, CV ^{[1
]}

TOMISAKA, K ^{[1
]}

机构：

[1] NIIGATA UNIV,FAC EDUC,PHYS LAB,NIIGATA 95021,JAPAN

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 415卷 / 02期

关键词：

GALAXIES; INDIVIDUAL; (IC-342); STARBURST; X-RAYS;

D O I：

10.1086/187037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Multiple supernovae in starburst galaxies should produce a hot gas bubble that evolves through stages with distinctive X-ray signatures. We obtained X-ray observations of IC 342 with the ROSAT High Resolution Imager and find both diffuse and point source X-ray emission from the central region with a luminosity of 1.5 x 10(39) ergs s-1. The diffuse emission has a diameter of 400 pc, a hot gas density of 0.2 cm-3 , and a pressure of approximately 10(6) K cm-3. The X-ray size and shape are similar to that seen at 1.4 GHz and in Halpha, but unlike the prominent molecular bar. Theoretical modeling implies that the hot gas bubble has an age of 2 x 10(5) yr and is still confined to the disk, suggesting that IC 342 is a starburst galaxy early in its development.

引用

页码：L79 / L82

页数：4

共 29 条

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