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Solar-Like Activity and Planetary Transits

Published online by Cambridge University Press:  23 May 2007

N. Epchtein ,
M. Candidi ,
A.F. Lanza ,
A.S. Bonomo ,
G. Cutispoto ,
I. Busà ,
A.C. Lanzafame ,
S. Messina ,
I. Pagano  and
K.G. Strassmeier
A.F. Lanza*
Affiliation:
INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
A.S. Bonomo
Affiliation:
Dipartimento di Fisica e Astronomia dell'Università degli Studi di Catania, via S. Sofia 78, 95123 Catania, Italy
G. Cutispoto
Affiliation:
INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
I. Busà
Affiliation:
INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
A.C. Lanzafame
Affiliation:
Dipartimento di Fisica e Astronomia dell'Università degli Studi di Catania, via S. Sofia 78, 95123 Catania, Italy
S. Messina
Affiliation:
INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
I. Pagano
Affiliation:
INAF – Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123 Catania, Italy
K.G. Strassmeier
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
*
[email protected]
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Abstract

Late-type MS stars display optical variability on different time scales due to the presence of photospheric brightness inhomogeneities produced by surface magnetic fields, analogous to cool spots and bright faculae observed in the Sun. We are developing methods to model the optical variability of main-sequence late-type stars to understand the impact of solar-like activity on the detection of planetary transits and to significantly improve the detection efficiency. Our techniques will also allow to map the longitude distribution of active regions on stars that harbor planets and to look for a possible connection between stellar activity and the presence of planets around a star. 


Type
Research Article
Information
European Astronomical Society Publications Series , Volume 25: 1st ARENA Conference on "Large Astronomical Infrastructures at CONCORDIA, prospects and constraints for Antarctic Optical/IR Astronomy" , 2007 , pp. 161 - 164
Copyright
© EAS, EDP Sciences, 2007

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