A CHANDRA X-RAY OBSERVATION OF L1251B

被引：4

作者：

Simon, Theodore ^{[1
]}

机构：

[1] Eureka Sci Inc, Honolulu, HI 96821 USA

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 694卷 / 01期

关键词：

ISM: Herbig; Haro Objects; ISM:; individual; (L1251; HH; 189); stars: formation; stars: pre-main sequence; X-rays: stars; YOUNG STELLAR OBJECTS; PHOTON IMAGING CAMERA; STAR-FORMING REGIONS; C2D SMALL CLOUDS; XMM-NEWTON; LOW-MASS; INFRARED OBSERVATIONS; SPECTRAL INDEXES; ORION-NEBULA; IRAS SOURCES;

D O I：

10.1088/0004-637X/694/1/425

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

I report the results of a 60 ks X-ray observation of the L1251 dark cloud in Cepheus, which was acquired with the ACIS-I camera on board the Chandra X-Ray Observatory. Forty-three compact X-ray sources were detected. The field of view was centered on the position of IRAS 22376+7455, an embedded Class 0/I protostar that is closely associated with the bright CO emission core, L1251B-Core E. A very intense impulsive X-ray flare was observed from a location within the formal error ellipse of the IRAS source and in close proximity (within less than or similar to 1 '') to a thermal continuum radio source, VLA 3. Given their small spatial offsets, the radio, far-infrared, and X-ray objects appear to be identical and consequently the likely origin and driving source of high-velocity gas flows that are observed in L1251B.

引用

页码：425 / 437

页数：13

共 52 条

[1]

ALTEN VP, 1997, IAU S, V182, P51

[2] Spectral indices of centimeter continuum sources in star-forming regions:: Implications on the nature of the outflow exciting sources [J].