A jet associated with the classical T Tauri star RY Tauri

被引：29
|
作者：
St-Onge, Gilbert [1 ]
Bastien, Pierre [2 ,3 ]
机构：
[1] CCSD, Dorval Astron Club, Dorval, PQ H9S 2E5, Canada
[2] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada
[3] Univ Montreal, Observ Mt Megantic, Montreal, PQ H3C 3J7, Canada
来源：
ASTROPHYSICAL JOURNAL | 2008年 / 674卷 / 02期
关键词：
ISM : Herbig-Haro objects; stars : individual (RY Tau); stars : pre-main-sequence;
D O I：
10.1086/524649
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
High spatial resolution images have been taken on the Gemini North telescope of the classical T Tauri star RY Tauri. The H alpha image, with the continuum properly subtracted, shows a jet extending out to at least 3100 at a position angle of about 295 degrees from the star. A counterjet extending to at least 3.5 ' in the opposite direction is also visible. The knots in the inner part of the jet are probably less than 10 years old. This new Herbig-Haro bipolar jet has been labeled HH 938. Comparison with previous Hubble Space Telescope (HST) images revealed a probable tangential motion of the brightest knot by about 165 km s(-1). The orientation of the disk, as given by the average position angle of published polarization measurements, is approximate to 20 degrees, or almost perpendicular to the direction of the jet. Because of the proximity of its inner knots to the star and their very young dynamical age, this jet is a very good candidate to study jet emission mechanisms.
引用
收藏
页码：1032 / 1036
页数：5
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