The first CCD photometric study of the open cluster NGC 2126

Details The first CCD photometric study of the open cluster NGC 2126 The first CCD photometric study of the open cluster NGC 2126

2003-08-26

arxiv.org/abs/astro-ph/0308453v1

Astron.Astrophys.410:879-886,2003

Astronomy and Astrophysics

Astrophysics

7 pages, 10 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20031311

We present the first CCD photometric observations of the northern open cluster NGC 2126. Data were taken on eight nights in February and December 2002 with a total time span of ~57 hours. Almost 1000 individual V-band frames were examined to find short-period variable stars. We discovered six new variable stars, of which one is a promising candidate for an eclipsing binary with a pulsating component. Two stars were classified as delta Scuti stars and one as Algol-type eclipsing binary. Two stars are slow variables with ambiguous classification. From absolute VRI photometry we have estimated the main characteristics of the cluster: m-M=11.0+/-0.5, E(V-I)=0.4+/-0.1, E(V-R)=0.08+/-0.06 (E(B-V)=0.2+/-0.15) and d=1.3+/-0.6 kpc. Cluster membership is suggested for three variable stars from their positions on the colour-magnitude diagram.

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