A spectroscopic orbit for HR 152

Details A spectroscopic orbit for HR 152 A spectroscopic orbit for HR 152

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..740m&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Aug. 1985, p. 740-744.

Astronomy and Astrophysics

Astrophysics

17

Binary Stars, Radial Velocity, Reference Stars, Stellar Orbits, Variable Stars, Orbital Elements, Stellar Spectrophotometry

Scientific paper

HR 152, one of the four reference stars used to standardize radial-velocity observations made at Cambridge, has been shown by measurements made with the Dominion Astrophysical Observatory radial-velocity spectrometer to be a spectroscopic binary. The effects of its variability are traceable in the residuals of many spectroscopic-binary orbits based on Cambridge data. The orbit has a period of 576 days and a semiamplitude of 0.69±0.08 km s-1; this is the first plausible orbit to be published with a semiamplitude smaller than 1 km s-1.

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