Spectroscopic orbit for a very metal-deficient star, the subdwarf BD + 13 deg 3683

Details Spectroscopic orbit for a very metal-deficient star, the subdwarf BD + 13 deg 3683 Spectroscopic orbit for a very metal-deficient star, the subdwarf BD + 13 deg 3683

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986stin...8726708j&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Stellar Composition, Stellar Spectra, Subdwarf Stars, Metallicity, Stellar Mass, Stellar Orbits

Scientific paper

The subdwarf BD + 13 3683 was observed with the radial-velocity scanner CORAVEL. Peak-to-peak radial-velocity variations of 50 km/sec are reported. A spectroscopic orbit was determined: BD + 13 3683 is apparently the most metal-deficient star (Fe/H = 2.3) with known orbital elements. This period is 40 days and the companion is expected to have a mass greater than 0.4 solar mass.

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