WebSupernovae. A supernova is an explosion of a massive supergiant star. It may shine with the brightness of 10 billion suns! The total energy output may be 10 44 joules, as much as the total output of the sun during its 10 billion year lifetime. The likely scenario is that fusion proceeds to build up a core of iron. WebAug 23, 2012 · Berkeley, Calif., Aug 23, 2012—Exploding stars called Type 1a supernova are ideal for measuring cosmic distance because they are …
19.4 The H–R Diagram and Cosmic Distances - OpenStax
WebType A stars had the strongest hydrogen lines, type O the weakest. The different classes were then rearranged in order of decreasing surface temperature. ... Because two stars with the same surface temperature can be very different (e.g., red supergiant vs red dwarf), an additional label, known as luminosity class, is added to unambiguously ... WebA: A star is a celestial body made up of a bright sphere of plasma that is kept together by gravity. Q: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…. A: The region of main sequence contains large number of stars than any other region. Therefore most of…. promoting evidence based practice in nursing
Astronomy Study guide pt. 6 Flashcards Quizlet
WebAnswer (1 of 3): This is due to the fact that most stars that end their life in type of binary system are fairly similar. Usually there is a white dwarf in a binary orbit with a similar size dwarf or larger red star. As the white … WebThe total energy output per second of a star is called its luminosity, L, sometimes written as L *. Our Sun's luminosity is about 3.84 × 10 26 W . Rather than use absolute values … WebFor example, if an astronomer observed a Cepheid star with period of 34 days, comparing to previously measured Cepheids, its absolute magnitude is -5.65. If its apparent magnitude was +23.0, the astronomer could use the distance modulus equation: m - M = 5 log d - 5. rearranged: d = 10 (m-M+5)/5 parsecs. to find the distance to the Cepheid: promoting events on linkedin