SIMBAD references

1997A&AS..126...21N - Astron. Astrophys., Suppl. Ser., 126, 21-30 (1997/November-2)

Radial velocities, rotations, and duplicity of a sample of early F-type dwarfs.


Abstract (from CDS):

We present new radial and rotational velocities for 595 nearby early F dwarfs, based on digital spectra cross-correlated with individually optimised synthetic template spectra. The selection of optimum templates, the determination of rotational velocities, and the extraction of velocities from the blended spectra of double-lined spectroscopic binaries are discussed in some detail. We find 170 spectroscopic binaries in the sample and determine orbits for 18 double-lined and 2 single-lined binaries, including some spectroscopic triples. 73 stars are listed with too rapid rotation to yield useful radial velocities (i.e. vsini>120km/s). We discuss the binary frequency in the sample, and the influence of unrecognised binaries on the definition of clean metallicity groups of young F dwarfs and the determination of their kinematical properties.

Abstract Copyright:

Journal keyword(s): methods: statistical - techniques: radial velocities - stars: binaries: spectroscopic - stars: kinematics - Galaxy: solar neighbourhood

VizieR on-line data: <Available at CDS (J/A+AS/126/21): table1 table2 table4 table5 table6>

Simbad objects: 662

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