HERSCHEL PHOTOMETRY OF DISKS AROUND LOW-MASS STARS IN THE R CrA CLOUD

被引：3

作者：

Harvey, Paul M. ^{[1
]}

Henning, Thomas ^{[2
]}

Liu, Yao ^{[3
,4
]}

Wolf, Sebastian ^{[5
]}

机构：

[1] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[2] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[3] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China

[4] Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China

[5] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 795卷 / 01期

基金：

美国国家航空航天局;

关键词：

brown dwarfs; protoplanetary disks; stars: formation; RADIATIVE-TRANSFER; CORONA AUSTRALIS; COLD DUST; EVOLUTION;

D O I：

10.1088/0004-637X/795/1/21

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report photometric results from a subset of a Herschel-PACS program to observe cool dust in disks around low-mass stars as a complement to our earlier program to measure far-infrared emission from brown dwarfs. In this latest study we observed five low-mass objects in the nearby R Corona Australis region and detected at least three at 70 mu m. Using a Monte Carlo radiative transfer code we have investigated the disk masses and geometry based on detailed spectral energy distribution (SED) modeling, and we compare these new results to those from our earlier larger sample of brown dwarfs. In particular, our SED analysis for these five objects shows again that disk geometries of brown dwarfs or low-mass stars are generally similar to their higher mass counterparts like T Tauri disks, but the range of disk mass extends to well below the value found in T Tauri stars.

引用

页数：6

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