HD 207331 a new $\delta$ Scuti star in the Cygnus field: discovery and follow-up observations

Abstract

Preliminary results on the discovery and follow-up observations of a new $\delta$ Scuti pulsator in the Cygnus field are presented. The variability of the star HD 207331 was detected while testing a Strömgren spectrophotometer attached to the H.L. Johnson 1.5-m telescope at the San Pedro Mártir observatory, México. CCD photometric data acquired soon after confirmed its variability. A few hours of $uvby$ differential photoelectric photometry during three nights revealed at least two beating periods. A two-site observational campaign carried out during one week in 2009 confirms the multi-periodic nature of this new $\delta$ Scuti pulsator.

4 pages, 3 figures, 4 tables, Astronomische Nachrichten, Proceedings of the HELAS IV Conference: Seismological Challenges for Stellar Structure, held in Lanzarote, Spain, February 2010, Astronomische Nachrichten, 331, No.9-10 (2010)/P37