Spitzer/IRAC search for companions to nearby, young M dwarfs

被引：10
|
作者：
Allen, Peter R. [1 ]
Reid, I. Neill [2 ]
机构：
[1] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
[2] Space Telescope Sci Inst, Baltimore, MD 21218 USA
来源：
ASTRONOMICAL JOURNAL | 2008年 / 135卷 / 06期
关键词：
binaries : visual; stars : formation; stars; low-mass; brown dwarfs;
D O I：
10.1088/0004-6256/135/6/2024
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of a survey of nearby, young M stars for wide low-mass companions with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We observed 40 young M dwarfs within 20 pc of the Sun, selected through X-ray emission criteria. A total of ten candidate companions were found with IRAC colors consistent with T dwarfs. Extensive ground-based NIR follow-up observations rejected all these candidates. Two additional candidates were discovered via common proper motion measurements, one of which was rejected as a background object and the other is a bona fide companion to GJ 2060, a member of the AB Doradus moving group.
引用
收藏
页码：2024 / 2032
页数：9
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