Evidence that the active stars HD 102077 (V 838 Cen) and HD 139084 (V 343 Nor) are members of the Local Association

Details Evidence that the active stars HD 102077 (V 838 Cen) and HD 139084 (V 343 Nor) are members of the Local Association Evidence that the active stars HD 102077 (V 838 Cen) and HD 139084 (V 343 Nor) are members of the Local Association

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252..408a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Oct. 1, 1991, p. 408-413.

Astronomy and Astrophysics

Astronomy

19

G Stars, K Stars, Stellar Physics, Abundance, Light Curve, Lithium, Local Group (Astronomy), Stellar Spectrophotometry

Scientific paper

The space motions, rotational v sin i values and lithium abundances are determined for the two southern-hemisphere active-chromosphere stars HD 102077 and 139084. The results imply that both stars are likely members of the Pleiades group as defined by Eggen (V = -25 km/s). This indicates an age of 7-10 x 10 exp 7 yr, consistent with the derived lithium abundance. Photometric data are also presented and compared with previous observations, to provide evidence for changes in the spot-induced light curves for each star.

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