Spectroscopy of MWC 349 A (Andrillat+ 1996)

Details Spectroscopy of MWC 349 A (Andrillat+ 1996) Spectroscopy of MWC 349 A (Andrillat+ 1996)

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..41180495a&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/118/495. Originally published in: 1996A&AS..118..495A

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Equivalent Widths, Spectra: Infrared

Scientific paper

We analyse spectroscopic CCD material obtained at the Haute Provence Observatory. We provide line identifications and equivalent width measurements in the wavelength region 3700-8790A. Over 300 emission features are identified and a comparison of our results with those of other authors is provided, as well as a table of all elements which have been identified in the spectrum of the object. The pattern of elements present is analogous to that of B-type stars, but some exceptions are noted, such as the absence of C, Al and Mn. We review the present knowledge of the spectrum variability of MWC 349A. The observations indicate th at the equivalent widths of the lines of many elements vary by factors of up to two. We also provide a list of diffuse interstellar features observed. The latter lead to an average (B-V) excess of about two magnitudes, which is less than what is expected for an object having an interstellar extinction of 10-11 magnitudes. (1 data file).

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