Mass–effective temperature–surface gravity relation for intermediate-mass main-sequence stars

In this work, a mass-effective temperature-surface gravity relation (MTGR) is developed for main sequence stars in the range of 6400 K < $T_{\rm eff}$ 20000 with log$g$ > 3.44. The MTGR allows simple estimation masses from their effective temperatures and surface gravities. It can be used solar metallicity rescaled any within -1.00 [Fe/H] 0.7. effect alpha-enhanced compositions also considered help correction terms. aimed to develop an that estimate main-sequence atmospheric parameters. One advantage over classical mass-luminosity relations its mass based on parameters obtained by purely spectroscopic methods and, therefore, interstellar extinction or reddening do not have known. use ($g$) relates stellar evolution provides more reliable estimation. A synthetical theoretical isochrones using Levenberg-Marquardt chi-square minimization algorithm. validity then checked testing 278 binary components precise absolute masses. Very good agreement has been between star estimated MTGR. mathematical expression given calculate propagated uncertainties For typical metallicity, mostly remain around 5-9%. fact uncertainty level only average about three times as large indicates very powerful tool computer code, mtgr.pro, written GDL/IDL provided relation.