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The 76th Name-List of Variable Stars
We present the next regular Name-List of variable stars containinginformation on 1406 variable stars recently designated in the system ofthe General Catalogue of Variable Stars.
| Monitoring of LPVs with an automatic telescope I: five new short period semiregular variables
We present light curves of five short period variables of spectral typeM. They are the first result of our monitoring program of LPVs with anautomatic telescope. The stars vary semiregularly on time scales ofabout 35 days and with small visual amplitude. It is shown that theFourier analysis is only of limited use for this kind of stars. Weconclude that this type of variability is more common among M giantsthan previously thought, and we briefly discuss these variables with theshortest periods among the SRVs.
| Photoelectric photometry of M-type stars
UBVRI photoelectric photometry was obtained for 110 M-type starscontained in the Caltech Two-Micron Survey and the revised AFGL Catalog.Of the 110 stars, 58 have a color index (B-R) greater than or equal to 4mag. A graph is given of (V-R) versus (V-I) for the present stars.
| Constraints on the molecular properties of interstellar X-ogen derived from radio observations
Twenty-eight X-ogen emission sources at 89.189 GHz have been detectedand observed. Twenty of these are new X-ogen sources which also containother interstellar molecules. No infrared stars are found to be X-ogensources. A new rest frequency (89,188.65 MHz) is derived for X-ogen. Itis shown that X-ogen is not SiC, C2H, or any molecule withspin-doubling, hyperfine structure, or both.
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