Radial-velocity curves for the classical Cepheids T Vul, TT Aql and Y Oph.
DOI: 10.1086/114171
Bibcode: 1986AJ.....92..436E
Evans, N. R.; Lyons, R.
Canada
Abstract
Radial-velocity curves for three classical Cepheids, T Vul, Y Oph, and TT Aql, have been obtained. Mean values of the systemic velocity of Y Oph are in marginally better agreement with a constant value than with the orbit suggested by Abt and Levy. IUE spectra show no sign of a main-sequence companion B8 or earlier.
1986
•
The Astronomical Journal
IUE
39