1999A&A...350..469K

Query : 1999A&A...350..469K

1999A&A...350..469K - Astronomy and Astrophysics, volume 350469-475 (1999/10-2)

A photometric survey for variable stars in the globular cluster M 5.

KALUZNY J., THOMPSON I., KRZEMINSKI W. and PYCH W.

Abstract (from CDS):

We present the results of a photometric survey for variable stars in the nearby globular cluster M5. A 14.8x22.8arcmin field centered on the cluster was monitored for a total of 37 hours with a CCD camera mounted on the 1.0-m Swope telescope. Five new variables were identified: four blue stragglers which are SX Phe pulsating variables, and an eclipsing binary with an orbital period of 0.466d. The eclipsing binary lies near the main-sequence turnoff on the cluster color-magnitude diagram. We do not confirm the variability of any of the 10 eclipsing binaries identified in the cluster field by Reid (1996MNRAS.278..367R) and Yan & Reid (1996MNRAS.279..751Y). The dwarf nova M5-V101 exhibited two outbursts with full amplitudes of about 2.7mag during our observations. A V/B-V color-magnitude diagram of the surveyed field was obtained, and a possible extreme HB star located 2mag below cutoff of the blue HB was identified.

Abstract Copyright: ∼

Journal keyword(s): stars: Hertzsprung-Russel (HR) and C-M diagrams - Galaxy: globular clusters: individual: M5 - stars: variables: general - stars: blue stragglers - stars: binaries: eclipsing

Nomenclature: Table 2: Cl* NGC 5904 KTK VN (Nos V1-V5). Text, p.474: Cl* NGC 5904 KTK BN (Nos B1-B2).

CDS comments: T.2: New Variables NV1 to NV5 = V1 to V5. Text, p.474: Blue stars = B1 and B2.

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Cl* NGC 5904 KTK V2 SX* 15 18 11.4309065856 +02 00 40.236851484   17.04 16.76     ~ 4 0
2 Cl* NGC 5904 SAW V101 CV* 15 18 14.4893282426 +02 05 34.901910063           ~ 31 0
3 Cl* NGC 5904 KTK B2 HS? 15 18 14.5468062408 +02 04 09.447913920   18.530 18.836     ~ 2 0
4 Cl* NGC 5904 KTK V1 SX* 15 18 22.76 +02 02 49.3   17.68 17.48     ~ 4 0
5 Cl* NGC 5904 SAN 37 HS? 15 18 32.7545310648 +01 54 52.466735304   15.58 15.85     ~ 5 0
6 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
7 Cl* NGC 5904 KTK V5 EB* 15 18 39.1115176634 +02 11 40.681001286           ~ 2 0
8 Cl* NGC 5904 KTK V3 SX* 15 18 40.0705672752 +01 58 41.313071388   17.23 17.04     ~ 5 0
9 Cl* NGC 5904 KTK V4 SX* 15 18 41.0574456864 +01 56 29.299808580   17.16 16.92     ~ 5 0
10 Cl* NGC 5904 YR V5 EB* ~ ~     18.14     ~ 4 0
11 Cl* NGC 5904 YR V6 EB* ~ ~     18.01     ~ 4 0
12 Cl* NGC 5904 YR V3 EB* ~ ~     18.73     ~ 4 0
13 Cl* NGC 5904 YR V2 EB* ~ ~     18.06     ~ 4 0
14 Cl* NGC 5904 YR V1 EB* ~ ~     17.78     ~ 4 0

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