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Semi-analytical Formulas for the Fundamental Parameters of Galactic Early B Supergiants
- Source :
- Serbian Astronomical Journal, Vol 179, Pp 69-74 (2009)
- Publication Year :
- 2009
- Publisher :
- Astronomical Observatory, Department of Astronomy, Belgrade, 2009.
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Abstract
- The publication of new tables of calibration of some fundamental parameters of Galactic B0-B5 supergiants in the two classes $I_mathrm{a}$ and $I_mathrm{b} $ allows to particularize the eight parameters conjecture that model five fundamental parameters. The numerical expressions for visual magnitude, radius, mass, luminosity and surface gravity are derived for supergiants in the range of temperature between 29700 K and 15200 K. The availability of accurate tables of calibration allows us to estimate the efficiency of the derived formulas in reproducing the observed values. The average efficiency of the new formulas, expressed in percent, is 94 for the visual magnitude, 81 for the mass, 96 for the radius, 99 for the logarithm of the luminosity and 97 for the logarithm of the surface gravity.
Details
- Language :
- English
- ISSN :
- 1450698X
- Volume :
- 179
- Database :
- Directory of Open Access Journals
- Journal :
- Serbian Astronomical Journal
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.09358d1097034979a08bdfaac6ce5283
- Document Type :
- article