Bibcode
Morossi, C.; Stalio, R.; Crivellari, L.
Bibliographical reference
In: Mass loss and evolution of O-type stars; Proceedings of the Symposium, Vancouver Island, British Columbia, Canada, June 5-9, 1978. (A80-16501 04-90) Dordrecht, D. Reidel Publishing Co., 1979, p. 109-112.
Advertised on:
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1979
Citations
0
Refereed citations
0
Description
Spectral indices (delta m2100 and delta m1500) for
32 O-type stars with known spectral class and reddening are plotted
versus log of effective temperature. The delta m2100 indices
are considered to be almost luminosity-independent, while evidence of a
well-established relationship between observed spectral indices and
empirical temperatures appears. Also graphed are equivalent widths of
selected photospheric lines versus temperature. Theoretical line
strengths computed with a code that solves the LTE line transfer problem
from the model atmosphere input of Kurucz, et al. (1974) indicate that
the general behavior of the silicon lines, but not the P V resonance
line, appears consistent with the computations.