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Photoelectric observations in a wide‐field area around the Praesepe cluster
Author(s) -
Grankin K. N.,
Ibragimov M. A.,
Tselishchev I. E.
Publication year - 1995
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2103160307
Subject(s) - photoelectric effect , physics , stars , astrophysics , cluster (spacecraft) , open cluster , variable star , astronomy , optics , computer science , programming language
The PPM catalogue numbers, photoelectric magnitudes V , color‐indexes U – B, B – V, V – R and rms errors of their determinations for 51 stars of the secondary wide‐angle photoelectric standard are published. The catalogue accuracy of quantities mentioned above is 0.007, 0.015, 0.006, 0.006 mag, respectively. A list of ten stars which are probably variable is published.