Star - Temperature, Spectral Types, Luminosity
Star - Temperature, Spectral Types, Luminosity: Stars differ in colour. Most of the stars in the constellation Orion visible to the naked eye are blue-white, most notably Rigel (Beta Orionis), but Betelgeuse (Alpha Orionis) is a deep red. In the telescope, Albireo (Beta Cygni) is seen as two stars, one blue and the other orange. One quantitative means of measuring stellar colours involves a comparison of the yellow (visual) magnitude of the star with its magnitude measured through a blue filter. Hot, blue stars appear brighter through the blue filter, while the opposite is true for cooler, red stars. In all magnitude scales, one magnitude step
Astronomy 122 - Measuring the Stars
Classification of Stars: Spectral Analysis and the H-R Diagram
Introduction to Astronomy
Astronomy Lecture Number 6
Introduction to Astronomy
SDSS SkyServer DR12
Types of Stars Stellar Classification, Lifecycle, and Charts
Stellar Distances - Temperature and Luminosity
Properties of Stars
A typical Hertzsprung-Russell diagram that contains information about
Stellar classification, Types, Spectral Classes & Luminosity
Solved Using Table 1.1 and Table 1.2 find the following
