Orbital elements of the double B star HR 2875
Received 20 October 1999 / Accepted 22 December 1999
Echelle spectroscopy has been obtained at Lick Observatory and at Mount Stromlo Observatory which reveals that the B star plus white dwarf system HR 2875 is actually a triple system comprised of the B3.5 primary, a B6 secondary and the white dwarf. Orbital parameters for the two B stars have been determined and indicate a period 15.0811 days and an eccentricity 0.68. The location of the white dwarf relative to the pair of B stars is unknown but may be sufficiently close to perturb their orbit. Further studies of the triple system are planned.
Key words: stars: binaries: spectroscopic stars: early-type stars: individual: HR 2875 stars: white dwarfs ultraviolet: stars
© European Southern Observatory (ESO) 2000
Online publication: February 25, 2000