86 GHz SiO maser survey of late-type stars in the inner Galaxy - III. Interstellar extinction and colours of the SiO targets

被引：55
|
作者：
Messineo, M
Habing, HJ
Menten, KM
Omont, A
Sjouwerman, LO
Bertoldi, F
机构：
[1] European So Observ, D-85748 Garching, Germany
[2] Leiden Observ, NL-2300 RA Leiden, Netherlands
[3] Max Planck Inst Radioastron, D-53121 Bonn, Germany
[4] CNRS, Inst Astrophys Paris, F-75014 Paris, France
[5] Univ Paris 06, F-75014 Paris, France
[6] Natl Radio Astron Observ, Socorro, NM 87801 USA
[7] Univ Bonn, Inst Radioastron, D-53121 Bonn, Germany
来源：
ASTRONOMY & ASTROPHYSICS | 2005年 / 435卷 / 02期
关键词：
dust; extinction; stars : AGB and post-AGB; stars : mass-loss; infrared : stars; circumstellar matter; Galaxy : stellar content;
D O I：
10.1051/0004-6361:20040533
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have determined extinction corrections for a sample of 441 late-type stars in the inner Galaxy, which we previously searched for SiO maser emission, using the 2MASS near-infrared photometry of the surrounding stars. From this, the near-infrared extinction law is found to be approximated by a power law A(lambda) proportional to lambda(-1.9 +/- 0.1). Near- and mid-infrared colour - colour properties of known Mira stars are reviewed. From the distribution of the dereddened infrared colours of the SiO target stars we infer mass-loss rates between 10(-7) and 10(-5) M-. yr(-1).
引用
收藏
页码：575 / 585
页数：11
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