Two-site CCD observations and spectroscopy of HD 207331: a new $δ$ Scuti variable in Cygnus

Details Two-site CCD observations and spectroscopy of HD 207331: a new $δ$ Scuti variable in Cygnus Two-site CCD observations and spectroscopy of HD 207331: a new $δ$ Scuti variable in Cygnus

2010-07-13

arxiv.org/abs/1007.2048v1

New Astronomy 15 (2010) 712-716

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, 5 figures, 3 tables, New Astronomy 15 (2010) 712-716

Scientific paper

10.1016/j.newast.2010.05.005

The results of an observational campaign on the new $\delta$ Scuti pulsator \astrobj{HD~207331} are reported. The star was observed photometrically from August 26 to September 2, 2009 from the Observatorio San Pedro M\'artir (0.84-m telescope, Mexico) and the Observatorio del Teide (0.80-m telescope, Spain). An overall run of 53.8 h of useful data was collected from the two sites. Four oscillation frequencies for \astrobj{HD~207331} have been found above a 99\% confidence level. These results confirm the multiperiodic pulsation nature of the star suggested in previous observations with sparse data. Spectroscopic observations carried out in 2009 allowed us to derive its spectral type and luminosity class as well as to estimate its rotation rate. A simple comparison with models is performed.

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