Mode identification in the high-amplitude δ Scuti star V2367 Cyg
Articles > Article · 2012
Authors: C. Ulusoy, T. Gülmez, I. Stateva, D. Dimitrov, I. Kh. Iliev, H. A. Kobulnicky, B. Yaşarsoy, M. Álvarez, R. Michel, Machado L. Fox, M. Damasso, A. Carbognani, D. Cenadelli, T. E. Pickering, J. Kwon, M. Tamura, L. A. Balona
Monthly Notices of the Royal Astronomical Society, International, WoS, 2012, vol 428, pp 3551-3558
DOI: 10.1093/mnras/sts293
Summary
We report on a multisite photometric campaign on the high-amplitude delta Scuti star V2367 Cyg in order to determine the pulsation modes. We also used high-dispersion spectroscopy to estimate the stellar parameters and projected rotational velocity. Time series multicolour photometry was obtained during a 98-d interval from five different sites. These data were used together with model atmospheres and non-adiabatic pulsation models to identify the spherical harmonic degree of the three independent frequencies of highest amplitude as well as the first two harmonics of the dominant mode. This was accomplished by matching the observed relative light amplitudes and phases in different wavebands with those computed by the models. In general, our results support the assumed mode identifications in a previous analysis of Kepler data.