Intracluster dust in the central region of 47 Tuc?

被引：16
|
作者：
Origlia, L
Scaltriti, F
Anderlucci, E
Ferraro, FR
Pecci, FF
机构：
[1] Osservatorio Astron Torino, I-10025 Pino Torinese, Italy
[2] Osservatorio Astron Bologna, I-40126 Bologna, Italy
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1997年 / 292卷 / 04期
关键词：
circumstellar matter; stars; evolution; variables; other; dust; extinction; globular clusters; individual; 47; Tuc; infrared;
D O I：
10.1093/mnras/292.3.753
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of 10-mu m imaging and UBVRI polarimetric mapping of the central region of 47 Tuc and of the four bright, long-period variables, V1, V2, V3 and V4, from the Sawyer Hogg list. No firm detection of dust emission in the centre of 47 Tuc has been found, indicating that the associated IRAS extended emission should be very diffuse. Circumstellar dust emission has been found around the V1 and V3 Mira variables, providing some information on the dust amount and density, and possibly total mass loss dM(tot)/dt similar to 8 x 10(-8) M. yr(-1).
引用
收藏
页码：753 / 757
页数：5
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