Titre du document

New variable stars on digitized Moscow collection plates. The field of 66 Ophiuchi

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Nom du Corpus

AstroConcepts

Auteur(s)
  • D. M. Kolesnikova 1
  • L. A. Sat 2
  • K. V. Sokolovsky 3,4
  • S. V. Antipin 1,2
  • A. A. Belinskii 2
  • N. N. Samus’ 1,2
Affiliation(s)
  • Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya ul. 48, 119017, Moscow, Russia
  • Sternberg Astronomical Institute, Moscow State University, Universitetski? pr. 13, 119992, Moscow, Russia
  • Max Planck Institute for Radio Astronomy, Auf dem Hügel 69, 53121, Bonn, Germany
  • Astro Space Center, Lebedev Physical Institute, Profsoyuznaya ul. 84/32, 117997, Moscow, Russia
Résumé

In the course of a program to digitize the astronomical plates of the Sternberg Astronomical Institute’s plate stacks, we are developing algorithms for searching for new variable stars and studying them using digitized photographic plates. We have discovered and studied 480 new variable stars in a 10° × 10° field of view centered on 66 Ophiuchi. The digitized plate negatives used are from the 40-cm astrograph, and are 30 × 30 cm in size. These stars include three new Cepheids of the Galaxy’s spherical component, 157 eclipsing binaries, 11 high-amplitude ? Scuti stars (HADSs), 144 RR Lyrae stars, 110 irregular variables (109 LB and one white star), and 55 semi-regular red variables. New important information has been obtained for 43 known variables, which we have classified and derived or improved their light elements; an erroneous identification of the Mira V404 Oph has been corrected. We have also identified more than 50 suspect brightness variables; a program of CCD observations of these suspected variables has been initiated. Our discoveries of new variable stars were performed in a star field with a large number of known variables, detected earlier photographically or using CCD techniques. The discovery of hundreds of new variables in a well-studied region of sky demonstrates that archive photographs possess a large information potential that has remained unrealized.

Langue(s) du document
Anglais
Année de publication
2010
Revue

Astronomy Reports

Éditeur
Springer (journals)
Type de publication
journal
Type de document
research-article
Présence de XML structuré
Non
Version de PDF
1.3
Score de qualité du texte
9.628
Nom du concept
  • Beta Lyrae stars
Identifiant ISTEX
BD286415468D812B1CD7E47B565ACEAB79A55ABA
ark:/67375/VQC-2T2HMLKT-4
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