Infrared detection of low-mass secondaries in spectroscopic binaries

Tsevi Mazeh, L. Prato, M. Simon, Elad Goldberg, Dara Norman, Shay Zucker

Research output: Contribution to journalReview articlepeer-review


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 Cryogenic Echelle (CSHELL) and the Phoenix spectrographs and describes detections of three low-mass secondaries in main-sequence binaries, G147-36, G164-67, 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 for detached main-sequence stars.

Original languageEnglish
Pages (from-to)1007-1014
Number of pages8
JournalAstrophysical Journal
Issue number2 I
StatePublished - 10 Jan 2002


  • Binaries
  • Spectroscopic
  • Spectroscopic - infrared
  • Stars - techniques


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