The distance to the Vela supernova remnant

被引：116

作者：

Cha, AN ^{[1
]}

Sembach, KR

Danks, AC

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[2] NASA, Goddard Space Flight Ctr, Raytheon STX, Greenbelt, MD 20771 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 515卷 / 01期

基金：

美国国家航空航天局;

关键词：

ISM : clouds; ISM : individual (Vela Supernova Remnant); line : profiles; supernova remnants;

D O I：

10.1086/311968

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained high-resolution Ca II and Na I absorption-line spectra toward 68 OB stars in the direction of the Vela supernova remnant. The stars lie at distances of 190-2800 pc as determined by Hipparcos and spectroscopic parallax estimations. The presence of high-velocity absorption attributable to the remnant along some of the sight lines constrains the remnant distance to 250 +/- 30 pc. This distance is consistent with several recent investigations that suggest that the canonical remnant distance of 500 pc is too large.

引用

页码：L25 / L28

页数：4

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