Abstract
view Abstract Citations (61) References (78) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Nature of the Symbiotic Star BF Cygni Mikolajewska, J. ; Kenyon, S. J. ; Mikolajewski, M. Abstract Optical and ultraviolet spectroscopy of the symbiotic binary BF Cyg obtained during 1979-1988 is discussed. This system consists of a low-mass M5 giant filling about 50 percent of its tidal volume and a hot, luminous compact object similar to the central star of a planetary nebula. The binary is embedded in an asymmetric nebula which includes a small, high-density region and an extended region of lower density. The larger nebula is formed by a slow wind ejected by the cool component and ionized by the hot star, while the more compact nebula is material expelled by the hot component in the form of a bipolar wind. The analysis indicates that disk accretion is essential to maintain the nuclear burning shell of the hot star. Publication: The Astronomical Journal Pub Date: October 1989 DOI: 10.1086/115229 Bibcode: 1989AJ.....98.1427M Keywords: Stellar Spectra; Symbiotic Stars; Ultraviolet Astronomy; Visible Spectrum; Giant Stars; Hot Stars; M Stars; Planetary Nebulae; Stellar Mass Ejection; Astrophysics; STARS: INDIVIDUAL; STARS: SYMBIOTIC full text sources ADS | data products SIMBAD (1) MAST (1)
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