Physics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994prnc.rept.....f&link_type=abstract
Final Report, 1 Oct. 1991 - 30 Sep. 1993 Princeton Univ., NJ. Dept. of Astrophysical Sciences.
Physics
Atmospheric Models, B Stars, Local Thermodynamic Equilibrium, Stellar Atmospheres, Stellar Luminosity, Stellar Models, Stellar Temperature, Spectral Energy Distribution, Stellar Gravitation, Stellar Physics, Stellar Spectra
Scientific paper
The general scientific goal of this program has been to determine whether the atmospheric structure of the B-type stars can be represented by the current generation of plane parallel, line-blanketed, LTE stellar atmosphere models sufficiently well to allow accurate effective temperatures and surface gravities to be deduced. The B stars cover a wide range of temperature and luminosity. For the hottest such stars (with T approximately 30,000 K) the applicability of the models may be compromised by departures from LTE in the stellar atmospheres ('non-LTE effects'). At the highest luminosities (the B 'super giants'), the models may be invalidated by departures from plane parallel geometry. Thus we seek to identify the temperature and luminosity range within which these effects are unimportant and where the models may be relied upon.
Fitzpatrick Edward L.
Massa
Walgren
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