Radial velocity variations in K giants: planets or pulsations?
نویسندگان
چکیده
منابع مشابه
Radial Velocity Variations in K Giants: Planets or Pulsations?
Radial velocity observations of K giants have revealed periodic variations for some of the stars. The periods range from approximately 180 to 1000 or more days with velocity amplitudes ranging from approximately 50 m/s to 500 m/s. Except for Iota Draconis (Frink et al. 2002), all variations are nearly sinusoidal. Companions with zero orbital eccentricity as well as pulsations may cause these ra...
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ژورنال
عنوان ژورنال: Communications in Asteroseismology
سال: 2007
ISSN: 1021-2043,1021-2043
DOI: 10.1553/cia147s121