منابع مشابه
Precise radial velocities of giant stars
Aims. We aim to detect and characterize substellar companions to K giant stars to further our knowledge of planet formation and stellar evolution of intermediate-mass stars. Methods. For more than a decade we have used Doppler spectroscopy to acquire high-precision radial velocity measurements of K giant stars. All data for this survey were taken at Lick Observatory. Our survey includes 373 G a...
متن کاملThe Radial Velocities of the More Distant Stars.
As a result of the work of Kapteyn, Campbell, and Boss it has been recognized for some years that the linear motions of the brighter stars vary with their spectral types, the velocities of the solar type stars being higher than those of types B and A. It is equally well-known, however, that the solar type stars in general have larger proper motions and so are much nearer to the sun than those o...
متن کاملRadial Velocities of Stars in the Galactic Center 1
We present results from K band slit scan observations of a ∼20×20 region of the Galactic center (GC) in two separate epochs more than five years apart. The high resolution (R = λ ∆λ ≥14, 000) observations allow the most accurate radial velocity and acceleration measurements of the stars in the central parsec of the Galaxy. Detected stars can be divided into three groups based on the CO absorpti...
متن کاملDifferential Radial Velocities and Stellar Parameters of Nearby Young Stars
Radial velocity searches for substellar mass companions have focused primarily on stars older than 1 Gyr. Increased levels of stellar activity in young stars hinders the detection of solar system analogs and therefore there has been a prejudice against inclusion of young stars in radial velocity surveys until recently. Adaptive optics surveys of young stars have given us insight into the multip...
متن کاملRadial velocities and binarity of southern SIM grid stars
We present analysis of precision radial velocities (RV) of 1134 mostly red giant stars in the southern sky, selected as candidate astrometric grid objects for the Space Interferometry Mission (SIM). Only a few (typically, two or three) spectroscopic observations per star have been collected, with the main goal of screening binary systems. The estimated rate of spectroscopic binarity in this sam...
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ژورنال
عنوان ژورنال: Lick Observatory Bulletins
سال: 1932
ISSN: 0075-9317
DOI: 10.5479/ads/bib/1932licob.15.190n