25 Serpentis
25 Serpentis is a binary star in the constellation Serpens.[1] It is a spectroscopic binary[2] consisting of a hot B-type giant and an A-type main-sequence star. The primary is a Slowly pulsating B star, which causes the system to vary by 0.03 magnitudes.[3]
References
- ↑ 1.0 1.1 1.2 "25 Serpentis -- Spectroscopic binary". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 2 July 2014.
- ↑ Petrie, R. M.; Phibbs, E. (1950). "Redetermination of the spectrographic orbits of iot Peg and 25 Ser.". Publications of the Dominion Astrophysical Observatory Victoria 8: 225. Bibcode:1950PDAO....8..225P.
- ↑ VSX; Otero, S. A (10 February 2012). "PT Serpentis". AAVSO Website. American Association of Variable Star Observers. Retrieved 28 May 2014.