Issue |
Astron. Astrophys. Suppl. Ser.
Volume 135, Number 1, February II 1999
|
|
---|---|---|
Page(s) | 29 - 40 | |
DOI | https://doi.org/10.1051/aas:1999157 | |
Published online | 15 February 1999 |
New periods of variable stars in Cygnus based on a quarter of century of photographic observations*
Astronomical Institute of the Slovak Academy of Sciences, 059 60 Tatranská Lomnica, The Slovak Republic e-mail: hric@ta3.sk galis@ta3.sk
Send offprint request to: L. Hric
Received:
13
March
1998
Accepted:
22
September
1998
This work summarizes the results of photographic photometry obtained over 24 years at the Skalnaté Pleso (1979-1993) and Asiago (1969-1988) observatories. The period of light changes, the epoch of the maximum or of the minimum, the type of variability and, in some cases, possible causes of the long-term behaviour of light changes were determined for 17 variable stars.
Key words: stars: techniques: photometric / stars: variables: general
© European Southern Observatory (ESO), 1999