000007472 001__ 7472
000007472 005__ 20250204104903.0
000007472 0247_ $$2DOI$$a10.48550/arXiv.2412.05671
000007472 037__ $$aBKSECT-2025-0003
000007472 100__ $$aMahy, L
000007472 245__ $$aBasic stellar observables
000007472 260__ $$c2024
000007472 520__ $$aPhysical properties of stars such as luminosity, surface temperature, distance, or mass are measured from observations. These physical properties are of paramount importance to understand how stars are born, live, and die in the universe near and far. This chapter discusses the basic concepts used by astronomers to derive key information about stars from the light they emit. We present through a pedagogical approach the methods required for determining stellar brightness (apparent and absolute magnitudes), surface temperature (via black-body radiation and spectral classification), and distance (using parallax and standard candles). We finally review techniques for estimating stellar mass and radius, including the use of binary star systems and stellar evolution models.
000007472 594__ $$aNO
000007472 773__ $$bIlya Mandel, section editor F.R.N. Schneider$$tEncyclopedia of Astrophysics$$yElsevier
000007472 8560_ $$flaurent.mahy@ksb-orb.be
000007472 8564_ $$s4779597$$uhttp://publi2-as.oma.be/record/7472/files/Mahy_Book_2024.pdf
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000007472 980__ $$aBOOKSECT