Evolution of starspot regions in DM UMa

Details Evolution of starspot regions in DM UMa Evolution of starspot regions in DM UMa

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.115..353m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 115, no. 2, Oct. 1985, p. 353-368.

Astronomy and Astrophysics

Astrophysics

12

Astronomical Photometry, Light Curve, Periodic Variations, Starspots, X Ray Sources, Astronomical Models, Binary Stars, Stellar Color, Stellar Magnitude

Scientific paper

B and V photometry of DM UMa obtained between January, 1980 and June, 1984 is presented. Analysis yields a mean photometric period 7d.478±0d.010. Light curves obtained during any two seasons do not agree in any of the following: shape, amplitude, phases of the light maxima and minima, mean light level, or brightness at the light maxima and minima. From the change in B-V over the photometric period, it is concluded that the hemisphere visible during the light minimum is cooler than that seen during light maximum. The mean color B-V = 1m.065±0m.002 is consistent with K1 III or K2 IV. Phases of light minima lie on two well-separated groups with different slopes; the corresponding periods are 7d.471±0d.002 and 7d.481±0d.001. In terms of the starspot model this indicates that two respective centers of activity were situated at different longitudes and latitudes on a differentially rotating star.

Affiliated with

Also associated with

No associations

Rating

Evolution of starspot regions in DM UMa 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 Evolution of starspot regions in DM UMa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of starspot regions in DM UMa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1545514