Query : 2016A&A...594A..41I

2016A&A...594A..41I - Astronomy and Astrophysics, volume 594A, 41-41 (2016/10-1)

Glimpses of stellar surfaces. I. Spot evolution and differential rotation of the planet host star Kepler-210.


Abstract (from CDS):

We use high accuracy photometric data obtained with the Kepler satellite to monitor the activity modulations of the Kepler-210 planet host star over a time span of more than four years. Following the phenomenology of the star's light curve in combination with a five spot model, we identify six different so-called spot seasons. A characteristic, which is common in the majority of the seasons, is the persistent appearance of spots in a specific range of longitudes on the stellar surface. The most prominent period of the observed activity modulations is different for each season and appears to evolve following a specific pattern, resembling the changes in the sunspot periods during the solar magnetic cycle. Under the hypothesis that the star exhibits solar-like differential rotation, we suggest differential rotation values of Kepler-210 that are similar to or smaller than that of the Sun. Finally, we estimate spot life times between ∼60 days and ∼90 days, taking into consideration the evolution of the total covered stellar surface computed from our model.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: activity - starspots - stars: rotation

Simbad objects: 3

goto Full paper

goto View the references in ADS

Number of rows : 3
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 243 2
2 Kepler-210 Er* 19 30 00.8101383528 +43 04 59.363216256   15.367 14.279 13.927   M0V 56 1
3 Kepler-210b Pl 19 30 00.8101566734 +43 04 59.362696026           ~ 25 0

To bookmark this query, right click on this link: simbad:objects in 2016A&A...594A..41I and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact