Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254...82h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Jan. 1, 1992, p. 82-86.
Astronomy and Astrophysics
Astronomy
9
Astronomical Photometry, Light Curve, Radial Velocity, Stellar Orbits, Triple Stars, Variable Stars, Eclipsing Binary Stars, Signal To Noise Ratios, Three Body Problem, Ubv Spectra
Scientific paper
New radial velocity measurements of the triple system DM Persei are presented. Analysis of these data, together with previously published velocities, shows that the third-body orbit has a period of 98 d, and excludes a previous alternative value of 101 d. The third body, of mass 3.2 solar mass for coplanar orbits, remains undetected on these high signal-to-noise spectra. The determination of the orbit of the secondary component of the semidetached system is much improved over a previous study, leading to increased masses for the primary and secondary components, but only minor changes to the solution of the light curves. New photometric observations on the uvby beta system are required to improve the determinations of the temperatures of all three components.
Hilditch Ron W.
Hill Graham
Khalesseh Bahram
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