1995PASP..107..648R

Query : 1995PASP..107..648R

1995PASP..107..648R - Publ. Astron. Soc. Pac., 107, 648-652 (1995/July-0)

Absolute-magnitude calibration for W UMa-type systems. II. Influence of metallicity.

RUCINSKI S.

Abstract (from CDS):

A modification to the absolute magnitude calibration for W UMa-type systems, taking into account differences in metal abundances, is derived on the basis of contact binary systems recently discovered in metal-poor clusters. A preliminary estimate of the magnitude of the metallicity-dependent term for the (B-V)-based calibration is Delta-M_V = -(0.3 ± 0.1) X [Fe/H]. The calibration based on the (V-I_C)color is expected to be less sensitive with the correction term ∼ -(0.12 ± 0.05) X [Fe/H].

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Journal keyword(s):

Simbad objects: 19

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Number of rows : 19
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 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 327 0
2 Cl Collinder 261 OpC 12 38 04.7 -68 22 40     10.7     ~ 216 0
3 Cl* NGC 5466 SAW V28 EB* 14 05 24.64 +28 31 59.0   19.04 18.635   18.419 ~ 22 0
4 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
5 Cl* NGC 5466 SAW V29 EB* 14 05 29.00 +28 31 13.4   19.278 19.218   18.935 ~ 22 0
6 Cl* NGC 6838 YM V5 EB* 19 53 34.2792169800 +18 44 05.004336696   18.80 17.90     ~ 15 0
7 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1190 0
8 Cl* NGC 6838 YM V4 EB* 19 53 48.9785973815 +18 47 49.873630534   18.59 17.90     ~ 12 0
9 Cl* NGC 6838 YM V3 EB* 19 53 50.8399140264 +18 47 51.550010211   19.3 19.07   17.50 ~ 14 0
10 Cl* NGC 6838 YM V2 EB* 19 53 57.0984816352 +18 45 46.982243594   18.76 17.80     ~ 17 0
11 Cl* NGC 6838 YM V1 EB* 19 53 57.5001963250 +18 43 33.764662120   19.00 18.20     ~ 16 0
12 Cl* NGC 4372 ALAW 31 EB* ~ ~     18.574     ~ 3 0
13 Cl* NGC 4372 ALAW 27 EB* ~ ~     19.983     ~ 3 0
14 Cl* NGC 4372 ALAW 22 EB* ~ ~     20.345     ~ 3 0
15 Cl* NGC 4372 ALAW 16 EB* ~ ~     18.741     ~ 3 0
16 Cl* NGC 4372 ALAW 5 EB* ~ ~     19.544     ~ 3 0
17 Cl* NGC 4372 ALAW 33 EB* ~ ~     19.025     ~ 3 0
18 Cl* NGC 4372 ALAW 4 EB* ~ ~     18.840     ~ 3 0
19 Cl* NGC 4372 ALAW 35 EB* ~ ~     18.748     ~ 3 0

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