The optical gravitational lensing experiment. Variable stars in globular clusters .3. RR Lyrae stars and Pop. II Cepheids in omega Centauri

被引：38

作者：

Kaluzny, J

Kubiak, M

Szymanski, M

Udalski, A

Krzeminski, W

Mateo, M

机构：

[1] LAS CAMPANAS OBSERV,CARNEGIE OBSERV,LA SERENA,CHILE

[2] UNIV MICHIGAN,DEPT ASTRON,ANN ARBOR,MI 48109

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1997年 / 125卷 / 02期

基金：

美国国家科学基金会;

关键词：

globular clusters; individual; NGC; 5139; stars; variables; RR Lyr; other;

D O I：

10.1051/aas:1997376

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present V-band photometry for 141 variable stars from the held of omega Cen. All but one variables are either RR Lyr stars or Pop. II Cepheids. One object is a distant background RR Lyr star from the galactic halo. The presented sample includes 33 newly identified variables, mostly low amplitude RR Lyr stars. We identified also two Pop. II Cepheids with exceptionally low amplitudes of light variations A(V) < 0.2 mag. The presented data may be used to study period changes of omega Cen variables and/or for Fourier decomposition of light curves(1).

引用

页码：343 / 353

页数：11

共 18 条

[1]

BAILEY SI, 1902, HARVARD ANN, P38

[2]

DICKENS RJ, 1989, USE PULSATING STARS, P141

[3]

GRATTON RG, 1986, ASTRON ASTROPHYS, V169, P111

[4]

HOGG HS, 1973, PUBL DDO, V6, P1

[5] The optical gravitational lensing experiment. Variable stars in globular clusters .1. Fields 5139A-C in omega centauri [J].

Kaluzny, J ;

Kubiak, M ;

Szymanski, M ;

Udalski, A ;

Krzeminski, W ;

Mateo, M .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 120 (01) :139-152

[6] The optical gravitational lensing experiment. Variable stars in globular clusters .2. Fields 5139D-F in omega Centauri [J].

Kaluzny, J ;

Kubiak, M ;

Szymanski, M ;

Udalski, A ;

Krzeminski, W ;

Mateo, M ;

Stanek, K .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1997, 122 (03) :471-481

[7]

MARTIN WC, 1938, ANN STERREW LEIDEN 2

[8] PERIOD LUMINOSITY METALLICITY RELATIONS, PULSATION MODES, ABSOLUTE MAGNITUDES, AND DISTANCES FOR POPULATION-II VARIABLE-STARS [J].

NEMEC, JM ;

NEMEC, AFL ;

LUTZ, TE .

ASTRONOMICAL JOURNAL, 1994, 108 (01) :222-246

[9]

PACZYNSKI B, 1995, IAU S, V169, P133

[10]

SANDAGE A, 1994, ASTRON ASTROPHYS, V283, P111

← 1 2 →