SIMBAD references

2010A&A...515A..98P - Astronomy and Astrophysics, volume 515, A98-98 (2010/6-1)

Coronal properties of planet-bearing stars.


Abstract (from CDS):

Do extrasolar planets affect the activity of their host stars? Indications for chromospheric activity enhancement have been found for a handful of targets, but in the X-ray regime, conclusive observational evidence is still missing. We want to establish a sound observational basis to confirm or reject major effects of Star-Planet Interactions (SPI) in stellar X-ray emissions. We therefore conduct a statistical analysis of stellar X-ray activity of all known planet-bearing stars within 30pc distance for dependencies on planetary parameters such as mass and semimajor axis. In our sample, there are no significant correlations of X-ray luminosity or the activity indicator LX/Lbol with planetary parameters which cannot be explained by selection effects.Coronal SPI seems to be a phenomenon which might only manifest itself as a strong effect for a few individual targets, but not to have a major effect on planet-bearing stars in general.

Abstract Copyright:

Journal keyword(s): planet-star interactions - stars: activity - stars: coronae - stars: statistics - X-rays: stars

Errata: + corrigendum vol. 529, p. C1 (2011)

Simbad objects: 73

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