WebA 0.5 solar-mass white dwarf has a radius 1.9 × that of Earth, a 1.0 solar-mass one is only 1.5 earth radii whilst a 1.3 solar-mass white dwarf 1.4 earth radii. A white dwarf is composed of carbon and oxygen ions mixed in with … WebIf stars make up most of the mass of a spiral galaxy, we would expect the galaxies’ masses to increase much more slowly with radius than they actually do. However, spiral galaxy rotation curves indicate that their masses increase directly with radius.

The Classification of Stars

Web6. Describe what a typical star in the Galaxy would be like compared to the Sun. Cool, faint, low-mass stars located on the lower part of the main sequence are the most common, and therefore the most typical stars. 7. How do we distinguish stars from brown dwarfs? How do we distinguish brown dwarfs from planets? Stars have mass greater than 1 ... WebApr 13, 2024 · The planets beyond our solar system are called “exoplanets,” and they come in a wide variety of sizes, from gas giants larger than Jupiter to small, rocky planets about as big around as Earth or Mars. They can be … high definition airbrush makeup

Star brightness versus star luminosity Astronomy Essentials

Web18.4 The H–R Diagram. Identify the physical characteristics of stars that are used to create an H–R diagram, and describe how those characteristics vary among groups of stars. Discuss the physical properties of most stars found at different locations on the H–R diagram, such as radius, and for main sequence stars, mass. In this chapter ... WebApr 13, 2024 · Stars can live for billions of years, but their lives can be shorter or longer depending on their size (technically, their mass). The bigger (or more massive) the star, … WebStars are born with a wide variety of mass . The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the … high definition aerial photos