The environment of the optically brightest Herbig Ae star, HD 104237

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 分子云与恒星形成研究团组

	The environment of the optically brightest Herbig Ae star, HD 104237
	Grady, CA ; Woodgate, B ; Torres, CAO ; Apai, THD ; Rodmann, J ; Wang, HC; Stecklum, B ; Linz, H ; Williger, GM ; Brown, A
刊名	ASTROPHYSICAL JOURNAL
	2004-06-20
卷号	608 期号:2 页码:809-830
关键词	circumstellar matter ISM : Herbig-Haro objects ISM : individual (HH 669) ISM : jets and outflows planetary systems : protoplanetary disks stars : individual (HD 104237) stars : pre-main-sequence
ISSN号	0004-637X
英文摘要	We investigate the environment of the nearest Herbig Ae star, HD 104237, with a multiwavelength combination of optical coronagraphic, near-IR, and mid-IR imaging supported by optical, UV, and far-ultraviolet spectroscopy. We confirm the presence of T Tauri stars associated with the Herbig Ae star HD 104237, noted by Feigelson et al. We find that two of the stars within 15" of HD 104237 have IR excesses, potentially indicating the presence of circumstellar disks, in addition to the Herbig Ae star itself. We derive a new spectral type of A7.5Ve-A8Ve for HD 104237 and find log (L/L-circle dot,) = 1.39. With these data, HD 104237 has an age of t approximate to 5 Myr, in agreement with the estimates for the other members of the association. HD 104237 is still actively accreting, with a conspicuous UV/far-UV excess seen down to 1040 A, and is driving a bipolar microjet termed HH 669. This makes it the second, older Herbig Ae star now known to have a microjet. The presence of the microjet enables us to constrain the circumstellar disk to r less than or equal to 0."6 (70 AU) with an inclination angle of i = 18degrees(-11)(+14) from pole-on. The absence of a spatially extended continuum and fluorescent H-2 emission near Lyalpha. is in agreement with the prediction of shadowed disk models for the IR spectral energy distribution. With the high spatial density of disks in this group of stars, proximity, and minimal reddening, HD 104237 and its companions should serve as ideal laboratories for probing the comparative evolution of planetary systems.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	TELESCOPE IMAGING SPECTROGRAPH ; INTERMEDIATE-MASS STARS ; T-TAURI-STARS ; HUBBLE-SPACE-TELESCOPE ; ETA-CHAMAELEONTIS CLUSTER ; EMISSION-LINE GALAXIES ; AE/BE STARS ; BETA-PICTORIS ; HIGH-RESOLUTION ; CIRCUMSTELLAR DISKS
收录类别	SCI
语种	英语
WOS记录号	WOS:000222184300018
公开日期	2012-12-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/7700]
专题	紫金山天文台_分子云与恒星形成研究团组
作者单位	1.NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA 2.MCT, Lab Nacl Astrofis, BR-37504364 Itajuba, Brazil 3.Max Planck Inst Astron, D-69117 Heidelberg, Germany 4.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Grady, CA,Woodgate, B,Torres, CAO,et al. The environment of the optically brightest Herbig Ae star, HD 104237[J]. ASTROPHYSICAL JOURNAL,2004,608(2):809-830.
APA	Grady, CA.,Woodgate, B.,Torres, CAO.,Apai, THD.,Rodmann, J.,...&Hill, RS.(2004).The environment of the optically brightest Herbig Ae star, HD 104237.ASTROPHYSICAL JOURNAL,608(2),809-830.
MLA	Grady, CA,et al."The environment of the optically brightest Herbig Ae star, HD 104237".ASTROPHYSICAL JOURNAL 608.2(2004):809-830.