Identification and astrometry of variable stars in M3

Gáspár Á Bakos, József M. Benko, Johanna Jurcsik

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We present identification and astrometry of all previously known or suspected variables along with the discovery of six new variables in the globular cluster M3. The number of the catalogized variables increased to 274 by including all the confirmed, previously known variables and the new discoveries. The precise and homogeneous astrometry, as well as the clarification of misapprehensions in the preceding identifications are done by using overlapping fields from a wide-field Schmidt-camera, 1-m RCC telescope, and HST archive observations from the center of the cluster. The astrometric positions can serve as a direct input to any photometry which needs the accurate centers of the variables.

Original languageEnglish (US)
Pages (from-to)221-248
Number of pages28
JournalActa Astronomica
Issue number2
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Astrometry
  • Globular clusters: individual: M3
  • Stars: variables: RR Lyr
  • Stars: variables: general


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