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Photometric and spectroscopic investigation of the B2E Herbig star HD52721: First results |
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| Authors: | M. A. Pogodin N. G. Beskrovnaya G. G. Valyavin I. S. Guseva S. E. Pavlovskiy N. Rusomarov O. V. Ezhkova |
| Affiliation: | 11117. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia 21117. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Russia 31117. Astrophysics Department, Mathematics and Mechanics Faculty, St. Petersburg State University, St. Petersburg, Russia 41117. P. K. Shternberg State Institute of Astronomy, M. V. Lomonosov Moscow State University, Moscow, Russia |
| Abstract: | We present first results of the photometric and spectroscopic investigation of the B1/B2 Herbig star HD52721 performed in 2009–2010 at three observatories: Mountain Astronomical Station (Kislovodsk)—photometry, CrAO (Crimea, Ukraine)—spectroscopy, Observatory San Pedro Martyr (Ensenada, Mexico)—high-resolution echelle-spectroscopy. We have also used photometric data from the ASAS survey for 2003–2009. Our analysis has shown that a) the object is a close binary system with the orbital period of 1.610 days composed of two components of similar spectral type (B1–B2); b) the system is surrounded by the common disk-like envelope containing azimuthal inhomogeneity rotating with the orbital period of the system. We present preliminary estimates of the system parameters and discuss its possible nature. |
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