Infrared spectrophotometry of the chromospherically active binary HR 1099.

Details Infrared spectrophotometry of the chromospherically active binary HR 1099. Infrared spectrophotometry of the chromospherically active binary HR 1099.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995acaps..15..153z&link_type=abstract

Acta Astrophys. Sin., Vol. 15, No. 2, p. 153 - 162

Astronomy and Astrophysics

Astrophysics

Rs Cvn Stars: Stellar Activity, Rs Cvn Stars: Infrared Spectrophotometry, Rs Cvn Stars: Circumstellar Matter

Scientific paper

Spectrophotometry in the near-infrared (2.3 - 4.1 μm) was carried out for the chromospherically active binary system HR 1099 before and after the giant white-light flares of December 1989. It turns out that there are strong 2.3 μm emission and 3.1 μm absorption bands with half width about 0.4 μm for each and both bands suffered obvious changes after the flares, which indicates the existence of the circumstellar contribution of the binary system. However, the unusual IR 2.3 and 3.1 μm features of HR 1099, the first discovery among the RS CVn systems, cannot be simply explained by the thermal emission of the dust shell as it could be the case in cool giant stars.

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