A SEARCH FOR LAMBDA-BOOTIS STARS IN OB ASSOCIATIONS

被引：51

作者：

GRAY, RO ^{[1
]}

CORBALLY, CJ ^{[1
]}

机构：

[1] UNIV ARIZONA,STEWARD OBSERV,VATICAN OBSERV RES GRP,TUCSON,AZ 85721

来源：

ASTRONOMICAL JOURNAL | 1993年 / 106卷 / 02期

关键词：

D O I：

10.1086/116668

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for lambda Bootis stars in two OB associations, Orion OB1 and Lacerta OB1, has been carried out. One lambda Bootis star has been discovered in the Orion OBI association. In addition, nine A-type stars which appear to be slightly metal weak have been found in the two associations. The lambda Bootis star is situated on the Zero-Age Main Sequence (ZAMS). The discovery of these stars strengthens the hypothesis that the lambda Bootis stars are related to a short-lived evolutionary phase associated with the arrival of the star on the ZAMS.

引用

页码：632 / 636

页数：5

共 21 条

[1] CONFIRMATION AMONG VISUAL MULTIPLES OF AN INCREASE OF AP STARS WITH AGE [J].

ABT, HA ;

CARDONA, O .

ASTROPHYSICAL JOURNAL, 1983, 272 (01) :182-189

[2]

BRAY RO, 1993, IAU C, V138

[3] A SIMPLE ACCRETION DIFFUSION-MODEL FOR LAMBDA-BOOTIS STARS [J].

CHARBONNEAU, P .

ASTROPHYSICAL JOURNAL, 1991, 372 (01) :L33-L36

[4]

CHARBONNEAU P, 1993, APJ, V405, P702

[5]

CORBALLY CJ, 1993, UNPUB

[6]

GERBALDI M, 1993, IAU C, V138

[7]

Gray R. O., 1991, PRECISION PHOTOMETRY, P309

[8]

GRAY RO, 1991, ASTRON ASTROPHYS SUP, V87, P541

[9] THE EARLY F-TYPE STARS - REFINED CLASSIFICATION, CONFRONTATION WITH STROMGREN PHOTOMETRY, AND THE EFFECTS OF ROTATION [J].

GRAY, RO ;

GARRISON, RF .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 69 (02) :301-&

[10] THE EARLY A-TYPE STARS - REFINED MK CLASSIFICATION, CONFRONTATION WITH STROMGREN PHOTOMETRY, AND THE EFFECTS OF ROTATION [J].

GRAY, RO ;

GARRISON, RF .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1987, 65 (04) :581-602

← 1 2 3 →