Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...364..179f&link_type=abstract
Astronomy and Astrophysics, v.364, p.179-190 (2000)
Astronomy and Astrophysics
Astrophysics
21
Stars: Activity, Stars: Individual: Hd 206860
Scientific paper
The young solar type star HD 206860 is known to be a photometric variable with emission in the core of Ca ii H & K lines, several times more intense than the Sun when observed as a star. The photometric and spectroscopic monitoring of HD 206860 from near contemporaneous observations at Serra La Nave (Catania, Italy) and at the Observatoire de Haute Provence (OHP, France) shows that chromospheric spectral-line flux and photometric variations follow the same period (4.74 days). From Strömgren photometry and Ca ii and Hα chromospheric emission clearly anti-correlated variations have been found. This result suggests that spots and plages in this single solar-type star are spatially associated, as frequently observed for the largest sun-spot groups and for some very active RS CVn systems. A spot/plage model applied to the observed flux curves allows a crude reconstruction of the 3D structure of the external atmosphere of this star. Based on observations collected at the Observatoire de Haute Provence (CNRS), France, and at the Osservatorio Astrofisico di Catania, Italy
Catalano Santo
Frasca Antonio
Freire Ferrero R.
Marilli Ettore
No associations
LandOfFree
Spots and plages on a young main-sequence solar-type star: HD 206860 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spots and plages on a young main-sequence solar-type star: HD 206860, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spots and plages on a young main-sequence solar-type star: HD 206860 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1721884