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Optical scanner data from 4270 to 6710 A with a resolution of 7 A were obtained for some 500 H-alpha stars. The data were used to obtain spectral types, reddening coefficients, and emission line strengths; in addition, they are combined with IR broadband measurements out to 3.5 microns to provide bolometric luminosities and effective temperatures. H-R diagrams are presented for the Taurus-Auriga complex, Orion, NGC 2264, NGC 7000/IC 5070, and the Rho Ophiuci association. Some general conclusions are presented.
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Cohen et al. (Sat,) studied this question.
www.synapsesocial.com/papers/69deef295e217d93a5559065 — DOI: https://doi.org/10.1086/190641
M. Cohen
L. V. Kuhi
The Astrophysical Journal Supplement Series
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