Other
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..268k&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, March 1985, p. 268-271.
Other
9
Eclipsing Binary Stars, Giant Stars, Hot Stars, Stellar Spectrophotometry, Symbiotic Stars, Ultraviolet Spectra, Balmer Series, Emission Spectra, Helium Ions, Iue, Light Curve, Planetary Nebulae, Radiant Flux Density
Scientific paper
The authors present ultraviolet and optical observations of the 1984 eclipse of the symbiotic binary star SY Mus. The optical light curve shows a 627-day variation which is reflected in the intensity of the far-UV continuum (λ < 2000 Å) and in the intensities of all strong, permitted UV emission lines. This contrasts sharply with other eclipsing systems, in which some high ionization permitted lines show little evidence for large-scale variability. The behavior of the emission lines and the UV continuum is most naturally understood if the hot stellar source and a surrounding ionized nebula in the SY Mus binary are eclipsed by a red-giant companion every 627 days. The depth of the eclipse in the He II λ1640 emission line allows estimating the radius of the partially eclipsed He+ region (75 R_sun;) and that of the cool giant (60 R_sun;), for a distance of 1.3 kpc.
Kafatos Menas
Kenyon Scott. J.
Lutz Jack H.
Michalitsianos Andrew G.
No associations
LandOfFree
The 1984 eclipse of the symbiotic binary SY MUSCAE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The 1984 eclipse of the symbiotic binary SY MUSCAE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 1984 eclipse of the symbiotic binary SY MUSCAE will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-826156