Rotation Profile of Kepler-63 from Planetary Transits

Autor:	Yuri Netto, Adriana Valio
Rok vydání:	2015
Předmět:	Physics Space and Planetary Science Starspot Astrophysics::Solar and Stellar Astrophysics Astronomy Astronomy and Astrophysics Astrophysics::Earth and Planetary Astrophysics Planetary system Rotation Kepler Astrophysics::Galaxy Astrophysics
Zdroj:	Proceedings of the International Astronomical Union. 10:259-261
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921315006328
Popis:	Currently it is possible to estimate the rotation profile of a star that harbours a planet in an orbit such that it eclipses the star periodically. During one of these transits, the planet may occult a spot on the photosphere of the star, causing small variations in its light curve. By detecting the same spot in a later transit, it is possible to estimate the stellar rotation period. Here we present the results of this model for the case of the star Kepler-63, which has a planet in an orbit with high obliquity. This means that the planetary eclipse occults many latitude bands of the star, from near the equator to the poles. The results show that Kepler-63 has differential rotation of 0.133 rd/d and a relative differential rotation of 11.4%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c64ba86d7a31ab57ad824bb25fca10e1 https://doi.org/10.1017/s1743921315006328 Zobrazit plný text záznamu Plný text ve formátu PDF