22 citations · 71 across the 9 of their papers we have counts for
9 papers
Composite-Spectrum Binaries, Paper XXIII: HD 69479/80, a 90-day binary with a cool-giant primary
R. E. M. Griffin, R. F. Griffin
HD~69479/80 is a composite-spectrum binary whose components are a late-G giant and an early-A dwarf. The orbit has a period of only 91 days (which seems short for a system containi…
R Coronae Borealis: Radial-velocity and other observations, 1950-2007
M. W. Feast, R. F. Griffin, G. H. Herbig +1
Radial-velocity observations made on more than a thousand nights are presented for the type star of the R Coronae Borealis (RCB) class. There are four principal sources: the Lick O…
Precise orbital elements, masses and parallax of the spectroscopic-interferometric binary HD 26441
Jose A. Docobo, Roger F. Griffin, Pedro P. Campo +1
The orbit of the visual-speckle binary A 2801 (HD 26441) was calculated independently of the previously published double-lined spectroscopic solution, obtaining similar values for…
Spectral Type and Radial Velocity Variations in Three SRC Variables
Kathleen E. Moncrieff, David G. Turner, C. Ian Short +3
SRC variables are M supergiants, precursors to Type II supernovae, that vary in brightness with moderately regular periods of order 100-1000 days. Although identified as pulsating…
Orbits of Six Late-type Active-Chromosphere Binaries
R. F. Griffin, N. Filiz Ak
We present spectroscopic orbits for the active stars HD 82159 (GS Leo), HD 89959, BD +39 2587 (a visual companion to HD 112733), HD 138157 (OX Ser), HD 143705, and HD 160934. This…
Spectroscopic Binary Orbits from Photoelectric Radial Velocities - Paper 191: HD 17310, HD 70645 and HD 80731
R. F. Griffin, H. M. J. Boffin
The three objects have been identified as members of the recently recognized class of Gamma Doradus stars, which exhibit multi-periodic photometric variations that are thought to a…