Spots and Active Regions on the Emission-Line Star VY Ari

Details Spots and Active Regions on the Emission-Line Star VY Ari Spots and Active Regions on the Emission-Line Star VY Ari

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap.....44..429a&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 44, Issue 4, p. 429-439 (2001).

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

Quasi-simultaneous photoelectric and spectroscopic observations have been made of the active spotted star VY Ari, showing an increase in the equivalent width of pure emission in the H line with a decrease in the star's brightness. Such an increase indicates a relationship between active regions in the chromosphere and the cool photospheric spots. The photometric variability of VY Ari can be described entirely in terms of a zonal model. The spotted regions occupy up to 41% of the star's total surface, with the temperature difference between the quiet photosphere and a spot of 1300 K. The spots lie at middle and low latitudes.

Affiliated with

Also associated with

No associations

Rating

Spots and Active Regions on the Emission-Line Star VY Ari 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 Spots and Active Regions on the Emission-Line Star VY Ari, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spots and Active Regions on the Emission-Line Star VY Ari will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1103472