Abstract
view Abstract Citations (53) References (59) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS 7500--9300 Angstrom Spectroscopy of MWC 349A Hamann, F. ; Simon, M. Abstract The authors present 7500 - 9300 Å spectra, at 30 km s-1 resolution, of the luminous emission-line star MWC 349A. At least 160 spectral lines are detected, including several strong Fe II lines excited by fluorescence with Lyα. The variety of line profiles and excitation requirements imply several distinct emission regions in the circumstellar envelope, ranging from high-density (≥ 1010 cm-3) and neutral to low-density (≤ 106 cm-3) and ionized. The dynamics inferred for these regions support the rotating disk plus bipolar wind model proposed for this source by Hamann and Simon in 1986. Publication: The Astrophysical Journal Pub Date: April 1988 DOI: 10.1086/166246 Bibcode: 1988ApJ...327..876H Keywords: Emission Spectra; Infrared Spectra; Line Spectra; Lyman Alpha Radiation; Stellar Luminosity; Stellar Spectra; Gravitational Fields; H I Regions; Late Stars; Radio Astronomy; Stellar Envelopes; Astrophysics; INFRARED: SPECTRA; LINE IDENTIFICATIONS; STARS: CIRCUMSTELLAR SHELLS; STARS: EMISSION-LINE; STARS: INDIVIDUAL ALPHANUMERIC: MWC 349A full text sources ADS | data products SIMBAD (9)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
