A new photometric study of T Tauri stars in the infrared
文献类型:期刊论文
作者 | Chen PS(陈培生); Liu JY(刘杰英); Dan HG(单红光) |
刊名 | NEW ASTRONOMY |
出版日期 | 2020 |
卷号 | 74页码:9 |
ISSN号 | 1384-1076 |
关键词 | Stars: pre-main sequence - stars: T Tauri stars Herbig Ae Be stars - infrared: stars |
DOI | 10.1016/j.newast.2019.101286 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We have compiled infrared photometric data from the literature of practically all T Tauri stars found up to date including 444 classical T Tauri stars (CTTSs), 1698 weak-line T Tauri stars (WTTSs) and 1258 not classified T Tauri stars (3400 in total) in addition to 196 post-T Tauri stars (PTTSs). From this data bank we extract the infrared characteristics of the different groups and discuss different origins of the infrared radiation. The observational data are taken from the AKARI, IRAS, WISE and 2MASS missions. We show that in the wavelength range 1-140 mu m, all T Tauri stars have infrared excesses. CTTSs have more infrared excess than WTTSs, while PTTSs have little or no infrared excess. We found that in the 1-3 mu m wavelength range the infrared emission of T Tauri stars is mainly due to thermal radiation from the photosphere and hot dust grains from circumstellar envelopes. In the 3-140 mu m wavelength range the infrared emission of T Tauri stars is mainly due to radiation from dusty/gaseous disks surrounding the stars. In addition, we also make a comparison between T Tauri stars and Herbig AeBe stars (HAeBe). There are some differences between these two kinds of objects in that for HAeBe stars the infrared radiation as a rule originates in dusty/gaseous disks in the 1-3 mu m wavelength range, while in the range 3-12 mu m it is possibly due to PAH emission for about half of HAeBe stars. In other wavelength ranges both kinds of stars have similar infrared characteristics indicating emission from dusty/gaseous disks. |
学科主题 | 天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS |
WOS关键词 | SPECTRAL ENERGY-DISTRIBUTIONS ; SPITZER C2D SURVEY ; ALL-SKY SURVEY ; FORMING REGION ; DISKS ; EMISSION ; EXCESSES ; ORION ; 2MASS ; IRAS |
资助项目 | National Natural Science Foundation of China[11873086] ; National Natural Science Foundation of China[11373067] ; National Natural Science Foundation of China[11173056] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000489351400001 |
资助机构 | National Natural Science Foundation of China[11873086, 11373067, 11173056] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21390] |
专题 | 云南天文台_其他 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Chen PS(陈培生) |
作者单位 | Yunnan Observatories and Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China |
推荐引用方式 GB/T 7714 | Chen PS,Liu JY,Dan HG. A new photometric study of T Tauri stars in the infrared[J]. NEW ASTRONOMY,2020,74:9. |
APA | Chen PS,Liu JY,&Dan HG.(2020).A new photometric study of T Tauri stars in the infrared.NEW ASTRONOMY,74,9. |
MLA | Chen PS,et al."A new photometric study of T Tauri stars in the infrared".NEW ASTRONOMY 74(2020):9. |
入库方式: OAI收割
来源:云南天文台
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