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AGB Candidates in the Field of γ Cas1
Enke, H.; Nesci, R.; Tuvikene, T. +4 more
We report the spectroscopic and photometric monitoring of a sample of 530 candidate AGB stars in a 5×5 degrees field, selected from the IPHAS catalog; historic light curves were derived from Asiago IR plates taken in the years 1965-1984. We found 10 Miras, 5 stars with long term trends, 3 semiregular and 3 irregular. Spectral types from CCD slit s…
δ Mus Revisited: Rectifying a 82 yr-old Mistake
Boffin, Henri M. J.; Pourbaix, Dimitri
The red giant δ Muscae is known since 1919 to be a spectroscopic binary, and the first and only orbit was determined in 1936, claiming the period to be 847 days. This was discrepant with the Hipparcos determined astrometric orbit. Using the latest data available for this object - leading to a 100 yr time-span - we show here that the correct period…