期刊
ASTRONOMY & ASTROPHYSICS
卷 453, 期 1, 页码 L1-U2出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20065290
关键词
stars : low-mass, brown dwarfs; stars : formation; stars : pre-main sequence; stars : individual objects : ISO-CHA II 13
In this letter we characterize the candidates for young stars and brown dwarfs detected in a survey with ISOCAM in the Chamaeleon II dark cloud. Photometric data coming from a wide-field optical imaging survey, combined with IR measurements from the 2MASS catalogue and from the Spitzer satellite, allow us to study the nature of the candidates. Using intermediate-band filters we can provide a first estimate of the temperatures for objects cooler than about 3800 K. On the basis of spectroscopic and photometric data, we confirm that ISO-CHA II 13 is a young substellar object with a mass of about 0.05 M-circle dot. It is thus the first object in Cha II whose substellar nature has been spectroscopically confirmed. By having a temperature of about 2880 K and displaying a substantial infrared excess, it joins the list of young brown dwarfs observed to have a surrounding disk.
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