Astrophysics and Space Science

, Volume 94, Issue 2, pp 253–272 | Cite as

Variable stars in NGC 6397

  • H. M. H. El-Worfaly
  • E. Budding
Article
  • 31 Downloads

Abstract

Thirty-four deep sky plates of NGC 6397 taken from AAO, UKSTU and SAAO sources were examined with the aim of checking parameters of (3) known variables in the cluster, and also to discover new and generally fainter (Main-Sequence) variables.

The search methods have included various visual and automated procedures, a comparison of which provides another aspect of the present work.

At least two faint variables have been identified, one of which (V4) was reported previously during this same search. The other object (C74) was ‘detected’ by the COSMOS machine and confirmed by visual inspection. A number of other candidates for genuine stellar variability are presented.

Keywords

Visual Inspection Search Method Automate Procedure Variable Star Stellar Variability 

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Copyright information

© D. Reidel Publishing Co 1983

Authors and Affiliations

  • H. M. H. El-Worfaly
    • 1
  • E. Budding
    • 1
  1. 1.Department of AstronomyUniversity of ManchesterEngland

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