IR Detection of Low-Mass Secondaries in Spectroscopic Binaries
نویسندگان
چکیده
This paper outlines an infrared spectroscopic technique to measure the radial velocities of faint secondaries in known single-lined binaries. The paper presents our H band observations with the CSHELL and the Phoenix spectrographs and describes detections of three low-mass secondaries in main-sequence binaries: G147-36, G 164-67, and HD 144284, with mass ratios of 0.562± 0.011, 0.423 ± 0.042, and 0.380 ± 0.013, respectively. The latter is one of the smallest mass ratios derived to date. Subject headings: binaries: spectroscopic—infrared: stars—techniques: spectroscopic
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تاریخ انتشار 2001