First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object
文献类型:期刊论文
作者 | Bayo, Amelia1; Joergens, Viki2; Liu, Yao2,3,4; Brauer, Robert5; Olofsson, Johan1,2; Arancibia, Javier1; Pinilla, Paola6; Wolf, Sebastian5; Ruge, Jan Philipp5; Henning, Thomas2 |
刊名 | ASTROPHYSICAL JOURNAL LETTERS |
出版日期 | 2017-05-20 |
卷号 | 841期号:1页码:4 |
ISSN号 | 2041-8205 |
关键词 | brown dwarfs stars: formation stars: low-mass stars: pre-main sequence |
DOI | 10.3847/2041-8213/aa7046 |
英文摘要 | OTS44 is one of only four free-floating planets known to have a disk. We have previously shown that it is the coolest and least massive known free-floating planet (similar to 12 M-Jup) with a substantial disk that is actively accreting. We have obtained Band 6 (233 GHz) ALMA continuum data of this very young disk-bearing object. The data show a clear unresolved detection of the source. We obtained disk-mass estimates via empirical correlations derived for young, higher-mass, central (substellar) objects. The range of values obtained are between 0.07 and 0.63 M-circle plus (dust masses). We compare the properties of this unique disk with those recently reported around higher-mass (brown dwarfs) young objects in order to infer constraints on its mechanism of formation. While extreme assumptions on dust temperature yield disk-mass values that could slightly diverge from the general trends found for more massive brown dwarfs, a range of sensible values provide disk masses compatible with a unique scaling relation between M-dust and M* through the substellar domain down to planetary masses. |
WOS关键词 | BROWN DWARF DISKS ; STAR-FORMING REGION ; CHAMELEON-I ; PRESTELLAR CORES ; HERSCHEL SURVEY ; RHO OPHIUCHI ; CLOUD CORE ; COLD DUST ; FRAGMENTATION ; EMISSION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000402563400009 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22988] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Bayo, Amelia |
作者单位 | 1.Univ Valparaiso, Inst Fis & Astron, Fac Ciencias, Ave Gran Bretana 1111, Valparaiso, Chile 2.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 3.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 5.Univ Kiel, Inst Theoret Phys & Astrophys, Leibnizstr 15, D-24118 Kiel, Germany 6.Univ Arizona, Dept Astron, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA 7.Dublin Inst Adv Studies, Sch Cosm Phys, 31 Fitzwilliams Pl, Dublin 2, Ireland 8.INAF Osservatorio Astrofis Arcetri, Lgo E Fermi 5, I-50125 Florence, Italy 9.Univ Leeds, Sch Phys & Astron, EC Stoner Bldg, Leeds LS2 9JT, W Yorkshire, England 10.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France |
推荐引用方式 GB/T 7714 | Bayo, Amelia,Joergens, Viki,Liu, Yao,et al. First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,841(1):4. |
APA | Bayo, Amelia.,Joergens, Viki.,Liu, Yao.,Brauer, Robert.,Olofsson, Johan.,...&Chauvin, Gael.(2017).First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object.ASTROPHYSICAL JOURNAL LETTERS,841(1),4. |
MLA | Bayo, Amelia,et al."First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object".ASTROPHYSICAL JOURNAL LETTERS 841.1(2017):4. |
入库方式: OAI收割
来源:紫金山天文台
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