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An electronic version of the second volume of the General Catalogue of Variable Stars with improved coordinates

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  • N. N. Samus’ 1,2
  • V. P. Goranskii 2
  • O. V. Durlevich 2
  • A. V. Zharova 2
  • E. V. Kazarovets 1
  • N. N. Kireeva 1
  • E. N. Pastukhova 1
  • D. B. Williams 3
  • M. L. Hazen 4
  • Institute of Astronomy, Russian Academy of Sciences, ul. Pyatnitskaya 48, 119017, Moscow, Russia
  • Sternberg Astronomical Institute, Universitetskii pr. 13, 119992, Moscow, Russia
  • American Association of Variable Star Observers, 25 Birch St., 02138-1205, Cambridge, MA, USA
  • Harvard Observatory, 60 Garden St., 02138, Cambridge, MA, USA

We present a new electronic version of the second volume of the fourth edition of the General Catalogue of Variable Stars (GCVS), which contains data on 13480 variable stars in the constellations Cygnus-Orion (the order of constellations in the Catalogue follows the Latin alphabet). The new version takes into account the Name Lists of Variable Stars from no. 67 to 76 for the same constellations. The main distinctive feature of the new version is that it contains improved equatorial J2000.0 coordinates for 13446 stars (including those for 5052 stars with an allowance made for proper motions), based on the identifications with positional catalogs using finding charts, as well as on our new measurements. We searched for a number of stars on original plates from the collections of several observatories and using digital sky survey images. The new version also includes a file of remarks to the second and third GCVS volumes. Apart from a complete update of the positional information, we took into account several corrections that were found to be necessary after the publication of the second GCVS volume (1985). We present a list of references to new Internet resources.

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Astronomy Letters

Springer (journals)
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  • Beta Lyrae stars
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  • stars—variable and peculiar
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