دورية أكاديمية
Constraints of a pulsation frequency on stellar parameters in the eclipsing spectroscopic binary system V577 Oph
| العنوان: | Constraints of a pulsation frequency on stellar parameters in the eclipsing spectroscopic binary system V577 Oph |
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| المساهمون: | Creevey, O. (author), Telting, J. (author), Belmonte, J. (author), Brown, T. (author), Handler, G. (author), Metcalfe, Travis (author), Pinheiro, F. (author), Sousa, S. (author), Terrell, D. (author), Zhou, A. (author) |
| بيانات النشر: | John Wiley & Sons |
| سنة النشر: | 2010 |
| المجموعة: | OpenSky (NCAR/UCAR - National Center for Atmospheric Research / University Corporation for Atmospheric Research) |
| الوصف: | We present a preliminary spectroscopic analysis of the binary system V577Oph, observed during the summer of 2007 on the 2.6m NOT telescope on La Palma. We have obtained time series spectroscopic observations, which show clear binary motion as well as radial velocity variations due to pulsation in the primary star. By modelling the radial velocities we determine a full orbital solution of the system, which yields M(A) sin ³ i = 1.562 ± 0.012 M⊙ and M(B) sin³ i = 1.461 ± 0.020 M⊙. An estimate of inclination from photometry yields a primary mass of ∼ 1.6 M⊙. Using this derived mass, and the known pulsation frequency we can impose a lower limit of 1 Gyr on the age of the system, and constrain the parameters of the oscillation mode. We show that with further analysis of the spectra (extracting the atmospheric parameters), tighter constraints could be imposed on the age, metallicity and the mode parameters. This work emphasizes the power that a single pulsation frequency can have for constraining stellar parameters in an eclipsing binary system. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | Astronomische Nachrichten; http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-736Test; wos: 000285211700019; ark:/85065/d7mp53vz |
| DOI: | 10.1002/asna.201011434 |
| الإتاحة: | https://doi.org/10.1002/asna.201011434Test http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-736Test |
| حقوق: | An edited version of this article was published by John Wiley & Sons. Copyright 2010 John Wiley & Sons. |
| رقم الانضمام: | edsbas.B7086D8C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/asna.201011434 |
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