Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85..858s&link_type=abstract
Astronomical Journal, vol. 85, July 1980, p. 858-866.
Astronomy and Astrophysics
Astronomy
13
Astrometry, Late Stars, Radial Velocity, Stellar Rotation, Stellar Spectra, Velocity Measurement, Calcium, Emission Spectra, H Lines, K Lines, Magnesium, Southern Hemisphere, Spectrum Analysis, Ultraviolet Astronomy
Scientific paper
Radial velocity variations are demonstrated for four southern RS CVn candidates: HD 39937, 101379, 155555, and 174429. The period of HD 155555 appears to have decreased by about one part in 100,000 over the past 18 yr. In addition, high-resolution observations of the Ca II H and K profiles and the Mg II 2800-A emission doublet are presented. These enhance the likelihood of these being RS CVn objects. Radial velocity data for 15 other late-type bright field stars are presented. Some of these were observed by Copernicus and may exhibit unusual chromospheres, while the rest lack radial velocity information as tabulated in the Bright Star Catalog. All velocity measures have been corrected to the IAU heliocentric system.
Stacy John Gregory
Stencel Robert E.
Weiler Edward J.
No associations
LandOfFree
Radial velocity study of four southern RS CVn candidates and related field stars 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 Radial velocity study of four southern RS CVn candidates and related field stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial velocity study of four southern RS CVn candidates and related field stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-803143