中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1016/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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