Abstract
view Abstract Citations (18) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Far-ultraviolet observations of the variable radio star LS I +61 303. Maraschi, L. ; Tanzi, E. G. ; Treves, A. Abstract One short wavelength spectrum, 1200-1950 A, and two long wavelength spectra, 1900-3200 A, have been obtained from IUE observations of the radio star LSI plus 61 deg 303 in September 1980. Assuming an E(BV) value of 0.9, as given by the rectification of the 2200 A absorption dip, the ultraviolet continuum is found to be fitted by a model atmosphere corresponding to a supergiant of subclass b and spectral type around B1.5, at a distance of about 4 kpc. From Sept. 27-29, 1980, the profile of the Mg II (2800 A) line changed substantially, with the 2700-3100 A continuum flux varying by about 25 percent. Publication: The Astrophysical Journal Pub Date: September 1981 DOI: 10.1086/159229 Bibcode: 1981ApJ...248.1010M Keywords: Far Ultraviolet Radiation; Radio Stars; Ultraviolet Astronomy; Variable Stars; Atmospheric Models; Iue; Line Spectra; Stellar Atmospheres; Supergiant Stars; Astronomy full text sources ADS | data products SIMBAD (1) MAST (1) INES (1)
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