Sentences with phrase «velocity variations suggest»

Analysis of radial velocity variations suggest that this probable red dwarf star has about 15 percent of Sol's mass (Irwin et al, 1992).

Not exact matches

However, the high luminosity of the primary star, intense Ca II H and K emission (Smith and Dominy, 1979), and radial velocity variations somewhat larger than can be accounted for by the expected uncertainties suggested that Delta Eridani might be an RS CVn - type binary and therefore a photometric variable like most members of that class.

According to the Yale Bright Star Catalogue, 1991 5th Revised Edition notes entry for HR 4983, analysis of spectroscopy and velocity variations over at least five years initially suggested that Beta Comae Berenices may have an unseen companion, which was unresolved by speckle interferometry (Hartkopf and McAlister, 1984, page 109).

A number of publications suggest that seasonal, inter-seasonal and inter-annual variations of the earth's rotation velocity are directly proportional to the relative angular momentum at the atmosphere, which primarily depends on the velocity of zonal winds (Langley et al. 1981; Rosen and Salstein 1983; Robertson 1991).