منابع مشابه
Radial Velocity Studies of Close Binary Stars
Radial-velocity measurements and sine-curve fits to the orbital radial velocity variations are presented for ten close binary systems: OO Aql, CC Com, V345 Gem, XY Leo, AM Leo, V1010 Oph, V2612 Oph, XX Sex, W UMa, and XY UMa. Most of these binaries have been observed spectroscopically before, but our data are of higher quality and consistency than in the previous studies. While most of the stud...
متن کاملRadial velocity studies of cool stars Hugh
1Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK 2Department of Physics and Astronomy, University of Turku, Tuorla Observatory, Vňaisňalňantie 20, FI-21500 Piikkiňo, Finland 3Departamento de Astronomńõa, Universidad de Chile, Camino del Observatorio 1515, Las Condes, Santiago, Chile 4Astronomy Unit, School of Mathematical Sciences, Queen Mary U...
متن کاملRunaway Stars, Hypervelocity Stars, and Radial Velocity Surveys
Runaway stars ejected from the Galactic disk populate the halo of the Milky Way. To predict the spatial and kinematic properties of runaways, we inject stars into a Galactic potential, compute their trajectories through the Galaxy, and derive simulated catalogs for comparison with observations. Runaways have a flattened spatial distribution, with higher velocity stars at Galactic latitudes less...
متن کاملThe non-single star content of the list of radial velocity standard stars
We analyse the properties of unresolved multiple stars within the full-sky list of radial velocity standard stars, and we estimate that a low remaining fraction would have a radial velocity variation during the mission larger than the requirement. The need for supplementary observations to specifically remove these multiple stars does not appear justified. CU6 The non-single star content of the...
متن کاملRadial Velocity Variations in Pulsating Ap Stars . II . 33 Librae ⋆
We present precise relative radial velocity (RV) measurements for the rapidly oscillating Ap (roAp) star 33 Librae measured from high resolution data spanning the wavelength interval 5000–6200 Å. We find that pulsational radial velocity amplitude determined over a broad wavelength range (≈ 100 Å) depends on the spectral region that is examined and can be as high as 60 m s at 5600 Å and as low a...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1999
ISSN: 0252-9211
DOI: 10.1017/s0252921100048788