Astrofísicas: Estrellas binarias

  • Publicación
    Infrared Spectroscopy Of V404 CYGNI. Limits On The Accretion Disc Contamination
    We have obtained for the first time 2.10 - 2.45 micron infrared spectra of soft X-ray transient V404 Cygni. We determine a 95 percent confidence upper limit to...
  • Publicación
    Infrared variability of symbiotic stars
    Binary models of symbiotic stars are discussed, analyzing the results of recent IR observations. It is indicated that a binary must have component masses of...
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    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...
  • Publicación
    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...
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    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...
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    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...
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    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...
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    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...
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    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...