The photometric variability of the chromospherically active binary star HD 80715

Details The photometric variability of the chromospherically active binary star HD 80715 The photometric variability of the chromospherically active binary star HD 80715

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..107s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Jan. 1989, p. 107-113.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Binary Stars, Chromosphere, Stellar Spectrophotometry, Variable Stars, Stellar Activity, Stellar Orbits, Stellar Rotation, Variability

Scientific paper

Differential UBVRI photometry of the double-lined BY Dra system HD 80715 (K3 V + K3 V) obtained in December 1987 is presented. The star is found to be a variable with a full amplitude of 0.06 mag in V and a period similar or equal to the orbital period of 3.804 days. The mechanism of the variability is interpreted as rotational modulation due to dark starspots. In an attempt to detect chromospheric activity, high-resolution CCD spectra were obtained at Ca II H and K and at Fe I 6430 A and Ca I 6439 A, the photospheric lines normally used for Doppler imaging. HD 80715 shows double H and K emission features at a constant flux level for each component.

Affiliated with

Also associated with

No associations

Rating

The photometric variability of the chromospherically active binary star HD 80715 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The photometric variability of the chromospherically active binary star HD 80715, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The photometric variability of the chromospherically active binary star HD 80715 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-828361