22 citations · 71 across the 9 of their papers we have counts for
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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…