Standard stellar luminosities; what are typical and limiting accuracies in the era after Gaia?

Abstract

Methods of obtaining stellar luminosities (L) have been revised and a new concept, standard stellar luminosity, has been defined. Among the three methods (direct method from radii and effective temperatures, method using a mass-luminosity relation (MLR), and method requiring a bolometric correction), the third method, which uses the unique bolometric correction (BC) of a star extracted from a flux ratio ($f_{\mathrm{V}}/f_{\mathrm{Bol}}$) obtained from the observed spectrum with sufficient spectral coverage and resolution, is estimated to provide an uncertainty ($\Delta L/L$) typically at a low percentage, which could be as accurate as 1% perhaps more. The typical and limiting uncertainties of the predicted L of the three methods were compared. The secondary methods requiring either a pre-determined non-unique BC or MLR were found to provide less accurate luminosities than the direct method, which could provide stellar luminosities with a typical accuracy of 8.2% - 12.2% while its estimated limiting accuracy is 2.5%.

10 pages, including 1 figure and 2 tables, accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (11)

• Gaia-2MASS 3D maps of Galactic interstellar dust within 3 kpc
• The Solar Neighborhood XXXVII: The Mass-Luminosity Relation for Main Sequence M Dwarfs
• Eclipsing Binary Stars as Benchmarks for Trigonometric Parallaxes in the Gaia Era
• Main-Sequence Effective Temperatures from a Revised Mass-Luminosity Relation Based on Accurate Properties
• YBC, a stellar bolometric corrections database with variable extinction coefficients: an application to PARSEC isochrones
• Synthetic Stellar Photometry - II. Testing the bolometric flux scale, and tables of bolometric corrections for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper and JWST systems
• Empirical Bolometric Correction Coefficients for Nearby Main-Sequence Stars in Gaia Era
• The Catalogue of Stellar Parameters from the Detached Double-Lined Eclipsing Binaries in the Milky Way
• Mass-luminosity relation for FGK main sequence stars: metallicity and age contributions
• Revisiting the mass- and radius-luminosity relations for FGK main-sequence stars
• On the Zero Point Constant of the Bolometric Correction Scale

Cited by in corpus (5)

• Visual binary stars with known orbits in Gaia EDR3
• Testing Multiband (G, GBP, GRP, B, V and TESS) Standard Bolometric Corrections by Recovering Luminosity and Radii of 341 Host Stars
• Theoretical Mass-Luminosity Relations in Gaia G-Band
• A Silent Revolution in Fundamental Astrophysics
• Stellar mass and radius estimation using Artificial Intelligence