Separate spectra of the visual components of MWC 349

Details Separate spectra of the visual components of MWC 349 Separate spectra of the visual components of MWC 349

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229l..23b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 229, Apr. 1, 1979, p. L23-L25.

Astronomy and Astrophysics

Astrophysics

24

Binary Stars, Emission Spectra, Stellar Spectra, H Alpha Line, High Resolution, Hydrogen Recombinations, Interplanetary Medium

Scientific paper

Observations of MWC 349 show that the two components of this visual binary have grossly different spectra. The brighter star shows numerous permitted and forbidden emission lines, reminiscent of Eta Car and LkH-alpha 101, superposed on a weak continuum. The fainter star shows emission only at H-alpha, which is much weaker than H-alpha emission in the bright component, and a continuum that is stronger than that of the primary at 7000 A. It is probably an early-type emission-line star. The strong continuum of the secondary, and the plethora of weak emission lines in the primary, account for part of the anomalously high continuum relative to the hydrogen emission lines that has previously been ascribed to a preplanetary disk. In light of these facts the general nature of the system is discussed.

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