SPEEDY MIC - A VERY YOUNG, RAPIDLY ROTATING K-STAR

被引：17

作者：

ANDERS, GJ

JEFFRIES, RD

KELLETT, BJ

COATES, DW

机构：

[1] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,ENGLAND

[2] RUTHERFORD APPLETON LAB,SPACE ASTRON GRP,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1993年 / 265卷 / 04期

关键词：

STARS; ABUNDANCES; ACTIVITY; INDIVIDUAL; HD; 197890; LATE-TYPE; PRE-MAIN-SEQUENCE; ROTATION;

D O I：

10.1093/mnras/265.4.941

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The active K-type object HD 197890 detected in the ROSAT all-sky survey appears to be one of the most rapidly rotating stars of its type yet found, with a v sin i value of 170 +/- 20 km s(-1). Preliminary photometric measurements and spectral synthesis of the Li 6707-Angstrom spectral region suggest a pre-main-sequence evolutionary status, although the derived spectral type of approximately K5 is uncertain at this stage, and further observations are planned.

引用

页码：941 / 945

页数：5

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