The interstellar spectrum of the central object of NGC 3603 /HD 97950/

Details The interstellar spectrum of the central object of NGC 3603 /HD 97950/ The interstellar spectrum of the central object of NGC 3603 /HD 97950/

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192..719s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 192, Sept. 1980, p. 719-723.

Astronomy and Astrophysics

Astronomy

4

Galactic Clusters, Hot Stars, Interstellar Matter, Stellar Spectra, Astronomical Catalogs, Line Spectra, Nebulae, Radial Velocity, Stellar Envelopes

Scientific paper

New observations are presented of interstellar features in the spectrum of HD 97950, the central object of NGC 3603. The detection by Walborn (1973) of very strong 4430-A is confirmed, but with central depth 17.5 + or - 5% rather than 29.6 + or - 1.5%. With a suggested optical reddening about 1.36 this is a deviation from the mean correlation of three rather than 11 standard deviations. The diffuse band at 5780 A has strength consistent with this reddening; the Na 1 D lines are saturated and have a single velocity component quite different from the velocity of the nebula.

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