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Full-Text Articles in Physical Sciences and Mathematics
Physical Properties Of The Binary Star 12 Persei, David J. Barlow, Colin D. Scarfe, Francis C. Fekel
Physical Properties Of The Binary Star 12 Persei, David J. Barlow, Colin D. Scarfe, Francis C. Fekel
Information Systems and Engineering Management Research Publications
We have obtained new radial velocities of the double-lined spectroscopic binary star 12 Persei, whose period is 331 days, and which has been resolved in recent years by speckle interferometry. We derive a solution for the orbital elements from the speckle and radial velocity data simultaneously, and find from that solution masses of 1.306 ± 0.035 and 1.172 ± 0.030 M☉ for the components, and an orbital parallax of 0farcs04224 ± 0farcs00056. We also determine spectroscopically the difference in magnitude between the components and, hence, their absolute magnitudes. We estimate their spectral types and individual colors by fitting standard-star colors …
Chromospherically Active Stars. Xvii. The Double-Lined Binary 54 Camelopardalis (Ae Lyncis), Francis C. Fekel, Joseph J. Eitter, José-Renan De Medeiros, J. Davy Kirkpatrick
Chromospherically Active Stars. Xvii. The Double-Lined Binary 54 Camelopardalis (Ae Lyncis), Francis C. Fekel, Joseph J. Eitter, José-Renan De Medeiros, J. Davy Kirkpatrick
Information Systems and Engineering Management Research Publications
New spectroscopic observations of the double-lined chromospherically active binary 54 Camelopardalis (=AE Lyncis) have been obtained, resulting in improved orbital elements and the determination of the fundamental properties of the system. 54 Cam has a period of 11.06794 days, an eccentricity of 0.125, and a mass ratio of 0.9945. The spectral types are F8 IV-V and G5 IV, positioning the components on opposite sides of the Hertzsprung gap. From a comparison with theoretical evolutionary tracks, the masses are estimated to be 1.60 and 1.59 M_⊙ for the G and F stars, respectively, while the radii are 3.7 and 3.2 R_⊙. …