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Abstract: Searches for planets around massive stars are essential for developinggeneral understanding of planet formation and evolution of the planetarysystems. The main objective of the Pennsylvania - Torun Planet Search isdetection of planets around G-K subgiants and giants through precision radialvelocity RV measurements with iodine absorption cell using HET HRSspectrograph. However, the long period radial velocity variations of red giantsmay also have other than planetary nature e.g. a non-radial pulsations orrotational modulation in presence of starspots. In this work we presentbisector analysis of cross-correlation functions CCF constructed from thespectra used for radial velocity determination but cleaned from the iodinelines for the second red giant with planets from our survey HD 102272.



Autor: Grzegorz Nowak, Andrzej Niedzielski, Aleksander Wolszczan

Fuente: https://arxiv.org/







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