Surface Map of the RS CVn-type Star UX Arietis

Details Surface Map of the RS CVn-type Star UX Arietis Surface Map of the RS CVn-type Star UX Arietis

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..219..873g&link_type=abstract

Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held

Astronomy and Astrophysics

Astronomy

Scientific paper

New high-resolution spectroscopic observation of RS CVn-type binary UX Ari made in Feb. 2000 is analyzed by means of Doppler imaging technique. The well-known code DoTS is applied to the FeI6430.844 and CaI6439.075 lines and a surface map of the K0IV component of the binary system is derived. The result has demonstrated that the main features of the map are two high-latitude (about 70 degree) spot active regions separated about 120 degree. In addition a middle-latitude weak spot and an equator belt weak spot are also appeared in the map. Such a spot structure pattern is related to the feature of the chromospheric activity of UX Ari in Feb. 2000.

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