تقرير
Complex asteroseismology of SX Phoenicis
| العنوان: | Complex asteroseismology of SX Phoenicis |
|---|---|
| المؤلفون: | Daszyńska-Daszkiewicz, J., Walczak, P., Pamyatnykh, A., Szewczuk, W., Dziembowski, W. |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We present seismic analysis of the prototype SX Phoenicis that aims at fitting the two radial-mode frequencies and the corresponding values of the bolometric flux amplitude (the parameter $f$), whose empirical values are derived from multi-coulor photometric observations. Seismic model that meets these conditions is of low mass, $M=1.05 M_\odot$, has moderately effective convection in the outer layers, described by the mixing length parameter $\alpha_{\rm MLT} \approx 0.7$, and the microturbulent velocity in the atmospheres of about $\xi_{\rm t}\approx 8$km/s. Such seismic studies of stars like SX Phe are very important for deriving constraints on outer-layer convection, because the object is on the border between very effective and ineffective convection. Comment: 5 pages, 2 figures, Proceedings of the Vienna Conference "Stars and their Variability, )bserved from Space" |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1912.00405 |
| رقم الأكسشن: | edsarx.1912.00405 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |