Bibcode
Nowak, G.; Niedzielski, A.; Wolszczan, A.
Referencia bibliográfica
EAS Publications Series, Volume 42, 2010, pp.165-168
Fecha de publicación:
4
2010
Número de citas
2
Número de citas referidas
2
Descripción
Searches for planets around massive stars are essential for developing
general understanding of planet formation and evolution of planetary
systems. The main objective of the PSU-TCfA Search for Planets around
Evolved Stars is detection of planets around G-K subgiants and giants
through highly accurate radial velocity (RV) measurements using an
iodine absorption cell on the HET HRS spectrograph. However, the
long-period radial velocity variations of red giants may also have other
causes than planets (e.g. non-radial pulsations or rotational modulation
in the presence of starspots). In this work, for the second red giant
with planets found in our survey, HD 102272, we present bisector
analysis of cross-correlation functions (CCF) constructed from the
spectra used for radial velocity determination but cleaned from the
iodine lines.