On the need for a new spectroscopic standard for MK spectral type B0 III

Details On the need for a new spectroscopic standard for MK spectral type B0 III On the need for a new spectroscopic standard for MK spectral type B0 III

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jrasc..77...87t&link_type=abstract

Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 77, April 1983, p. 87-91.

Astronomy and Astrophysics

Astronomy

B Stars, High Dispersion Spectrographs, O Stars, Standards, Stellar Spectrophotometry, Carbon, Helium, Line Spectra, Radial Velocity, Silicon, Stellar Luminosity, Stellar Spectra

Scientific paper

The MK standard HD 48434 is reclassified as B0 Ib, from its original MK type of B0 III, on the basis of new high-dispersion spectroscopic observations. This revised classification is demonstrated to be consistent with the star's likely membership in the association Mon OB2, and with the lack of any detectable evidence from radial velocities for duplicity of the sytem. A newly-determined radial velocity of +33.7 (±0.4) km s-1 is presented for this star, and the need for a new spectroscopic standard for spectral type B0 III is discussed.

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