Eléments provisoires de deux étoiles variables nouvelles

✍ Scribed by M. Luizet

• Publisher: John Wiley and Sons
• Year: 1908
• Tongue: English
• Weight: 175 KB
• Volume: 179
• Category: Article
• ISSN: 0004-6337
• DOI: 10.1002/asna.19081791006

✦ Synopsis

R e m arks. I 5431 Sn. 161106~. This variable is of the Algol type. Observations on plates taken between June 3, 1891, and July 13, 1906, are satisfied by the formula, J. D. 2410001.780 + 2.44596d E. Ten minima observed on plates taken in 1907 and 1908 occur too early, according to this formula. Recent observations are satisfied by the formula J.D.241ooo2.320 + 2.44578d E. 161206~. This variable is of the Algol type. Observations on plates taken between June 7, 1901, and July 6, 1908, are satisfied by the formula J. D. ~410001.704 + 2.06330d E.

This star was near its maximum brightness on a large number of plates taken between May 5 and Sept. 21, 1903. In 1904, during the same months, it was much fainter, and on several plates taken in 1905 it was estimated as of about the twelfth magnitude. The plates taken in 1906 do not show the object, with the exception of A 7701,