تقرير
Mid- and Far-Infrared Variability of PV Cep
| العنوان: | Mid- and Far-Infrared Variability of PV Cep |
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| المؤلفون: | Lorenzetti, Dario, Antoniucci, Simone, Giannini, Teresa, Causi, Gianluca Li, Di Paola, Andrea, Arkharov, Arkady A., Larionov, Valeri M. |
| سنة النشر: | 2014 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We present the collection of all the mid- and far-IR observations (3-170 um) of the young eruptive variable PV Cep available so far in the literature. These data allow us to confirm that flux variability is a prominent feature at mid-IR wavelength (3-25 um). Color-magnitude plots clearly indicate that the observed variability is not extinction-driven, but mainly influenced by fluctuations of the mass accretion rate. We interpret such variability as due to a hot spot created onto the stellar surface by the column of accreting matter, which heats the inner parts of the disk and determines the observed increase of the near- mid-IR luminosity. A quantitative characterization is given for both the spot itself and the additional thermal component created by it. Far-IR data (60-170 um) are consistent with the presence of a temperature stratification in a massive and quite un-evolved circumstellar disk. Comment: 4 figures, accepted Astrophysics and Space Science 2014 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/s10509-014-2044-2 |
| URL الوصول: | http://arxiv.org/abs/1405.7525 |
| رقم الأكسشن: | edsarx.1405.7525 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/s10509-014-2044-2 |
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