A Lyα bright jet from a Herbig Ae star

被引：54

作者：

Devine, D

Grady, CA

Kimble, RA

Woodgate, B

Bruhweiler, FC

Boggess, A

Linsky, JL

Clampin, M

机构：

[1] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

[2] Catholic Univ Amer, Inst Astrophys & Computat Sci, Washington, DC 20064 USA

[3] Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[4] Natl Inst Stand & Technol, Boulder, CO 80309 USA

[5] Space Telescope Sci Inst, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 542卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

circumstellar matter; planetary systems; stars : individual (HD 163296); stars : pre-main-sequence;

D O I：

10.1086/312939

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection in Ly alpha of a collimated, bipolar outflow (HH 409) associated with the 1.5-10 Myr old Herbig Ae star HD 163296. A blueshifted jet is visible in Ly alpha and Si III extending toward the southwest for at least 6" (725 AU). The combination of low line-of-sight extinction and relative faintness of the central star near Ly alpha enables us to trace the jet to within an unprecedented 0".06 (7.3 AU) of HD 163296. The jet has a radial velocity of 335-380 km s(-1), which is common for protostellar outflows. We also detected redshifted Ly alpha emission southwest of the star that may be due to infall or a poorly collimated wind component. If the age of the star is correct, then protostellar outflows may last up to 10 times longer than previously believed.

引用

页码：L115 / L118

页数：4

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