Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...223..219d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 223, no. 1-2, Oct. 1989, p. 219-226. Research supported by NATO, MPI, and CNR.
Astronomy and Astrophysics
Astrophysics
32
Binary Stars, Stellar Flares, Stellar Rotation, Stellar Spectrophotometry, Variable Stars, Chromosphere, Electron Density (Concentration), Iue, K Stars, Starspots, Stellar Spectra
Scientific paper
UV spectroscopy obtained for the RS CVn star II Pegasi in September, 1986, indicates the presence of a rotational modulation effect for the Mg II h and k and O I 1305 A lines; the largest flux is observed when the primary spot concentration is nearly on the opposite hemisphere, and the rotational modulation is noted to be of opposite sense to that observed in 1981. Optical photometry shows the largest concentration of spots on one hemisphere ever observed on II Peg, implying a spot group covering over 50 percent of the projected area of one hemisphere.
Butler John C.
Byrne Brendan P.
Doyle Gerry J.
Fowles W.
Rodono' Marcello
No associations
LandOfFree
Rotational modulation and flares on RS CVn and BY Draconis stars. XIII - IUE spectroscopy and photometry of II Pegasi during September 1986 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 Rotational modulation and flares on RS CVn and BY Draconis stars. XIII - IUE spectroscopy and photometry of II Pegasi during September 1986, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotational modulation and flares on RS CVn and BY Draconis stars. XIII - IUE spectroscopy and photometry of II Pegasi during September 1986 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1526975