WebStellar Radius Quiz 13C A yellow supergiant star X has the same color as the Sun, and it has 10000 times larger luminosity. From this, you would conclude that 1. Star X is hotter than the Sun. 2. Star X is colder than the Sun. 3. Star X has a larger diameter than the Sun. 4. Star X has a smaller diameter than the Sun. 5. Star X is powered by a ... WebFig. 1. Luminosity functions derived byMatsuoka et al.(2024), Willott et al.(2010b) compared to those used in this work. The two curves used here are based on that ofMatsuoka et al.(2024) and include a constant correction for osbcuration (CO), or a di erential correction for obscuration (DO). sources, of L bol = 10 ergs 1, are obscured and ...
17.1 The Brightness of Stars - Astronomy 2e OpenStax
WebAstronomers are careful to distinguish between the luminosity of the star (the total energy output) and the amount of energy that happens to reach our eyes or a telescope on Earth. … WebIn an H-R diagram the luminosity or energy output of a star is plotted on the vertical axis. This can be expressed as a ratio of the star's luminosity to that of the Sun; L* / Lsun. Astronomers also use the historical concept of … so good together reba
17.1 The Brightness of Stars - Astronomy 2e OpenStax
WebDec 26, 2024 · Luminosity of a Star. The luminosity of a star has a direct correlation with its temperature. Many stars in the Milky Way use nuclear fusion to generate energy. Nuclear … WebA star's luminosity depends primarily on its A) radius and surface temperature. B) distance from Earth. C) radius. D) mass and radius. E) surface temperature. Answer: A A star's luminosity is the A) apparent brightness of the star in our sky. B) surface temperature of the star. C) lifetime of the star. WebThe luminosity of a star is given by the equation. L = 4 p R 2 s T 4, Where L is the luminosity in Watts, R is the radius in meters, s is the Stefan-Boltzmann constant. (5.67 x 10 -8 Wm -2 K -4 ), and T is the star's surface temperature in Kelvin. The temperature of a star is related to its b-v magnitude. so good together