Flare activity and starspots on the red-dwarf system Gliese 490 AB /BD +36 degrees 2322/

Details Flare activity and starspots on the red-dwarf system Gliese 490 AB /BD +36 degrees 2322/ Flare activity and starspots on the red-dwarf system Gliese 490 AB /BD +36 degrees 2322/

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..188p&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Apr.-May 1980, p. 188-190. Research supported by the Norges Almenvit

Astronomy and Astrophysics

Astronomy

14

Binary Stars, Dwarf Stars, Flare Stars, Starspots, Stellar Spectrophotometry, Angular Velocity, Light Curve, Stellar Rotation, Ubv Spectra

Scientific paper

Flare activity is discovered on the red-dwarf system Gliese 490 AB. It is likely that the flare occurred on the brighter component. This star also had starspots in April and June 1979. The flare occurred when the spot group was facing the earth. A rotational period of 3.17 days is deduced from the observed data. It follows that the equatorial rotational velocity of Gliese 490 A is about 9 km s-1.

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