Biggest main sequence star9/27/2023 ![]() While blue giant stars are typically more modestly sized, blue supergiant stars can have more than 25 solar radii and 20 solar masses, making them the most massive stars in the Universe. ![]() Heaviest blue supergiant is 315 times more massive than the Sun Typically, a blue giant star would have an absolute magnitude of about 0 and brighter, and be about twice as massive as the Sun, while typically being only about 5 to 10 times bigger. Nonetheless, with minimum temperatures of 10,000K, these stars are hot enough to emit blue light, which places them in the O, B, and sometimes earlier as spectral classes. Blue giant stars are relatively smallĭespite their giant status, blue giants are only moderately bigger and more luminous than they were when they were on the main sequence. It is often erroneously applied to some hot and massive stars such as Wolf-Rayet stars, simply because these stars are big and hot. However, even though the term “blue giant” is not clearly defined. In practice, a blue giant star can be in any one of a variety of evolutionary star states, with about the only common aspects between them being that they have all evolved off of the main sequence, and that they inhabit a specific area of the H-R diagram, i.e., to the upper right of the main sequence. In astronomy, the term “blue giant star” does not have a clear definition. Refer to the image below here blue giants are represented by the giant stars Bellatrix and Spica, while the blue supergiants Rigel and Deneb appear to the upper right of the main sequence.īelow are 10 more interesting facts about blue giant stars you may not have known. ![]() One famous example is Rigel in the constellation of Orion, which is a class B supergiant that is 25 times bigger than the Sun, and has a surface temperature of 11,000K. While blue giant stars have a surface temperature of at least 10,000 Kelvin, compared to say a yellow dwarf star like our Sun at about 6,000K, another type of star called blue supergiants (class I) are even more extreme, with a surface temperature of between 10,000–50,000K and luminosities of 10,000 to a million times brighter than the Sun. For the most part, though, blue giant stars fall into the O and B spectral classes, and are categorized as either luminosity class III giants or class II bright giants. Since there is no clear definition of blue giant stars, the term is frequently applied to any hot, massive star, albeit erroneously in some cases. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |