Bibcode
García, R. A.; Salabert, D.; Ballot, J.; Beck, P. G.; Bigot, L.; Corsaro, E.; Creevey, O.; Egeland, R.; Jiménez, A.; Mathur, S.; Metcalfe, T.; do Nascimento, J.; Pallé, P. L.; Pérez Hernández, F.; Regulo, C.
Referencia bibliográfica
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19), Uppsala, Sweden, 06-10 June 2016, id.3
Advertised on:
8
2016
Número de citas
0
Número de citas referidas
0
Descripción
The surface magnetic field has substantial influence on various stellar
properties that can be probed through various techniques. With the
advent of new space-borne facilities such as CoRoT and Kepler,
uninterrupted long high-precision photometry is available for hundred of
thousand of stars. This number will substantially grow through the
forthcoming TESS and PLATO missions. The unique Kepler observations
-covering up to 4 years with a 30-min cadence- allows studying stellar
variability with different origins such as pulsations, convection,
surface rotation, or magnetism at several time scales from hours to
years. We study the photospheric magnetic activity of solar-like stars
by means of the variability induced in the observed signal by starspots
crossing the visible disk. We constructed a solar photometric magnetic
activity proxy, Sph from SPM/VIRGO/SoHO, as if the Sun was a distant
star and we compare it with several solar well-known magnetic proxies.
The results validate this approach. Thus, we compute the Sph proxy for a
set of CoRoT and Kepler solar-like stars for which pulsations were
already detected. After characterizing the rotation and the magnetic
properties of 300 solar-like stars, we use their seismic properties to
characterize 18 solar analogs for which we study their magnetism. This
allows us to put the Sun into context of its siblings.