The first CCD photometric study of the open cluster NGC 2126

A. Gáspár, L. L. Kiss, T. R. Bedding, A. Derekas, S. Kaspi, Cs Kiss, K. Sárneczky, Gy M. Szabó, M. Váradi

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

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 δ Scuti stars and one as Algol-type eclipsing binary. Two stars are slow variables with ambiguous classification. From absolute V(RI)C photometry we have estimated the main characteristics of the cluster: m - M = 11m.0 ± 0m.5, E(V - I) = 0m.4 ± 0m.1, E(V - R) = 0m.08 ± 0m.06 (E(B - V) = 0 m.2 ± 0m.15) and d = 1.3 ± 0.6 kpc. Cluster membership is suggested for three variable stars from their positions on the colour-magnitude diagram.

Original languageEnglish (US)
Pages (from-to)879-885
Number of pages7
JournalAstronomy and astrophysics
Volume410
Issue number3
DOIs
StatePublished - Nov 2003
Externally publishedYes

Keywords

  • NGC 2126
  • Open cluster and associations: general
  • Open clusters and associations: individual
  • Stars: variables: general
  • δ Sct

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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