Infrared and visible photometry of the RS CVn-star II Peg

Bibcode
1987Ap&SS.134..347L
DOI
10.1007/BF01094941
Lazaro, C.; Arevalo, M. J.; Fuensalida, J. J.
Bibliographical reference

Astrophysics and Space Science (ISSN 0004-640X), vol. 134, no. 2, June 1987, p. 347-360.

Advertised on:
6
1987
Number of authors
3
IAC number of authors
3
Citations
8
Refereed citations
6
Description
Infrared photometry in J,H,K,L,M bands carried out in different years from 1983 to 1986, and U,B,V,R,I quasi-simultaneous to 1984 are presented. Although the amplitude of the minima decrease as the wavelength increase, the infrared light curves show a similar behaviour to that observed in visible. Since no variations in the average magnitudes are notted from 1983 to 1986, the authors could assume that the activity of II Peg is not increasing. Also from the light curves a concentration process of the spots seems to have taken place from 1984 to 1986. In the analysis of the infrared colours an excess attributable to circumstellar dust emission is found.
Type
Refereed
Binary stars

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