An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M

被引：1

作者：

Gray, MD

Yates, JA

机构：

[1] Univ Wales, Dept Phys & Astron, Cardiff CF2 3YB, S Glam, Wales

[2] Univ Hertfordshire, Dept Phys Sci, Hatfield AL10 9AB, Herts, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 310卷 / 04期

关键词：

radiative transfer; surveys; stars : formation; ISM : molecules; infrared : ISM : lines and bands;

D O I：

10.1046/j.1365-8711.1999.03010.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry-Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 mu m towards W49N, but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3 sigma level, also towards W49N, at 169.74 mu m. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 mu m, either in emission or in absorption.

引用

页码：1153 / 1157

页数：5

共 18 条

[1]

Ceccarelli C, 1998, ASTRON ASTROPHYS, V331, P372

[2]

CERNICHARO J, 1997, ASTRON ASTROPHYS, V323, P25

[3]

Clegg PE, 1996, ASTRON ASTROPHYS, V315, pL38

[4]

DOEL RC, 1993, ASTRON ASTROPHYS, V280, P592