Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions
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چکیده
منابع مشابه
Binary sdB Stars with Massive Compact Companions
The masses of compact objects like white dwarfs, neutron stars and black holes are fundamental to astrophysics, but very difficult to measure. We present the results of an analysis of subluminous B (sdB) stars in close binary systems with unseen compact companions to derive their masses and clarify their nature. Radial velocity curves were obtained from time resolved spectroscopy. The atmospher...
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Brown dwarfs occupy the important region in the mass range between stars and planets. Their existence, ambigious until only recently, and their properties give insight into stellar and planetary formation. We present statistical results of an infrared, coronagraphic survey of young, nearby stars that includes probable companions to three young G-type stars, Gl 503.2 (G2V), HD 102982 (G3V), and ...
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Intermediate dispersion spectroscopy of a sample of 40 hot subdwarf B stars between 5500 A and 9000 A has been obtained. The sample includes a large fraction of targets which have been studied photometrically. Seven targets show strong lines due to the infrared Ca ii triplet, the unequivocal signature of a cool companion. The positive Ca ii identiications include known photometric binaries and ...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2018
ISSN: 1538-3881
DOI: 10.3847/1538-3881/aac387