The orbit and properties of the HD 149162 system

Details The orbit and properties of the HD 149162 system The orbit and properties of the HD 149162 system

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310..354j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 310, Nov. 1, 1986, p. 354-359. NSF-supported research.

Astronomy and Astrophysics

Astronomy

3

Binary Stars, Orbit Calculation, Stellar Motions, Stellar Orbits, K Stars, Late Stars, Radial Velocity, Stellar Evolution, Ultraviolet Astronomy, White Dwarf Stars

Scientific paper

HD 149162 is classified photometrically single and SB1 except for H-alpha emission that departs widely from the radial velocity of the K0 dwarf. Ca II H and K and Mg II h and k also show emission components at low dispersion. The system is X-ray luminous although ostensibly old disk and a slow K dwarf rotator. The orbit and other observations lead to a secondary that is composed of a dMe star and a cool white dwarf or a pair of dM and dMe stars. Further observations of the emission lines should ultimately define the triple system.

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