期刊
ASTRONOMY & ASTROPHYSICS
卷 387, 期 1, 页码 285-293出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20020366
关键词
stars : planetary systems; stars : general; infrared : stars
We present an ISO 25 mum photometric survey of a sample of 81 nearby main-sequence stars in order to determine the incidence of warm dust disks. All stars were detected by ISO. We used an empirical relation to estimate the photospheric flux of the stars at 25 mum. We find 5 stars (6%) with excess above the photospheric flux which we attribute to a Vega-like disk. These stars show disk temperatures not warmer than 120 K. Our study indicates that warm disks are relatively rare. Not a single star in our sample older than 400 Myr has a warm disk. We find an upper limit of M-disk = 2 x 10(5) M+ for the mass of the disks which we did not detect.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据