1984-1998 BV photometry of V815 Her (Jetsu+, 2000)

Details 1984-1998 BV photometry of V815 Her (Jetsu+, 2000) 1984-1998 BV photometry of V815 Her (Jetsu+, 2000)

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..33620223j&link_type=abstract

VizieR On-line Data Catalog: J/A+A/362/223. Originally published in: 2000A&A...362..223J

Physics

Stars: Variable, Photometry: Ubv

Scientific paper

As a case study of the solar-stellar connection, we have analysed a prolonged time series of BV photometry of the chromospherically active binary V815 Her. The surface differential rotation in the rapidly rotating G5V primary caused changes of 4.6% in the seasonal photometric rotation periods. This would imply a differential rotation coefficient of k=0.184, if the rotation of the starspots follow the solar law of differential rotation and the activity is confined within the same latitudinal range as in the Sun, having k=0.189 and the spectral type G2V. Our analysis of the primary and secondary minima of the seasonal light curves indicated that the regions of stronger activity have concentrated on one active longitude, which has maintained a constant rotation period of 1.79244d for about 14 years. No regular activity cycle was detected in the mean brightness changes of V815 Her. (1 data file).

Affiliated with

Also associated with

No associations

Rating

1984-1998 BV photometry of V815 Her (Jetsu+, 2000) 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 1984-1998 BV photometry of V815 Her (Jetsu+, 2000), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 1984-1998 BV photometry of V815 Her (Jetsu+, 2000) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1107940