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- W2278460057 abstract "We report absolute radial velocities with accuracy of 0.03 km/s for 889 FGKM-type main sequence stars. The velocities agree within 0.035 km/s (RMS) with the 26 standard stars of Udry, et al. (1999). The velocity zero-point was set using observations of the day sky and the asteroid Vesta. The resulting zero-point of our velocities is only slightly different from that of Udry et al.: V_present - V_Udry > = +0.053 km/s. Gravitational redshifts and convective blueshifts are accounted for in our velocity measurements to first order, by using the known velocity of the Sun to set the velocity zero-point. Nonetheless these two effects will cause systematic velocity errors of ~0.3 km/s as a function of spectral type. Multiple spectra were obtained for all 889 stars during four years, and 782 of them exhibit velocity scatter less than 0.1 km/s. These stars may serve as radial velocity standards if they remain constant in velocity. We found 11 new spectroscopic binaries and report orbital parameters for them." @default.
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- W2278460057 date "2001-12-20" @default.
- W2278460057 modified "2023-09-27" @default.
- W2278460057 title "Absolute Radial Velocities for 889 Late-type Stars" @default.
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