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

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...170...55j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 170, no. 1, Dec. 1986, p. 55-58.

Astronomy and Astrophysics

Astrophysics

10

Binary Stars, Radial Velocity, Stellar Orbits, Stellar Spectra, Subdwarf Stars, Metallicity

Scientific paper

The subdwarf BD +13°3683 has been observed with the radial-velocity scanner CORAVEL. Peak-to-peak radial-velocity variations of about 50 km s-1 are reported. A spectroscopic orbit has been determined: BD +13°3683 is apparently the most metal-deficient star (Fe/H = -2.3) with known orbital elements. The period is 40 days and the companion is expected to have a mass higher than 0.4 M_sun;.

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