Astrophysical: Binary stars

  • Publication
    MOA-2006-BLG-074: Recognizing Xallarap Contaminants in Planetary Microlensing
    MOA-2006-BLG-074 was selected as one of the most promising planetary candidates in a retrospective analysis of the MOA collaboration: its asymmetric high...
  • Publication
    New windows to the universe; Proceedings of the Eleventh European Regional Astronomy Meeting, Universidad de la Laguna, Spain, July 3-8, 1989. Part II
    Recent observational and theoretical investigations of the sun and sunlike stars and of galactic structure and evolution are discussed in reviews and reports...
  • Publication
    Observations of Cygnus X-2 with IUE: Ultraviolet results from a multiwavelength campaign
    The observations of the low-mass x ray binary, Cyg X-2, taken with the International Ultraviolet Explorer (IUE) in a campaign conducted in June and October of...
  • Publication
    OGLE-2018-BLG-1700L: Microlensing Planet in Binary Stellar System
    We report a planet in a binary that was discovered from the analysis of the microlensing event OGLE-2018-BLG-1700. We identify the triple nature of the lens...
  • Publication
    On the evolutionary status of two very active visual binaries
    HD 36705 (AB Doradus) and HD 155555 (V824 Ara) are two nearby very active cool stars. Both have strong Li I (lambda)6708 resonance lines, implying high surface...
  • Publication
    On the post-T-Tauri nature of late-type visual companions to B-type stars
    We report on intermediate-to-high resolution spectroscopy and standard broadband photometry of late-type visual companions to early-type stars. Our program...
  • Publication
    PHL 932 - Another non-post-AGB central star of planetary nebula
    The very high surface gravity and low temperature of PHL 932, a hot subluminous star surrounded by a planetary nebula, imply that it cannot be a post-AGB star...
  • Publication
    Relative lithium abundances in pre-main-sequence spectroscopic binaries
    We present a study of the lithium abundance of five pre-main sequence (PMS) double-lined binaries. These binaries are composed of weak-lined T Tauri stars...
  • Publication
    Scanning the population of planetary systems around stars with wide brown dwarf companions
    Stars with wide brown dwarf companions that host exoplanets are extremely rare, as only four were reported to date. Different theories propose that planets can...