Mae Chow
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Rigel has exhausted the supply of hydrogen in its core and, as it evolved from the main sequence, it started to cool and expand to its current size 😉 Based on the star’s pulsations, it is possible that it has already been a blue supergiant once, before evolving into a red supergiant and then increasing its temperature and becoming a blue supergiant again 😊 Even though Rigel’s physical properties are uncertain, the star will face the same fate as other exceptionally massive stars 🤓 The star will continue to fuse heavier elements into its core, until it can’t counter gravityal compression or implodes. This would trigger a Type II supernova. [1]
Rigel is currently in an area of nebulosity. The star’s light reflects off several dust clouds, most notably the IC 2118 (the Witch Head Nebula). Rigel can also be associated with M42 Orion Nebula, which although is more or less on the same line as the star’s sight-is nearly twice as far from Earth. Although Rigel may be far from the Nebula, its projected path through space is close enough to it that even with the differences in distances. Rigel, as a result is often classified as an outlying star of Orion OB1 Association. It is also a member the Taurus Orion R1 Association. The OB1 Association is reserved for stars that are closer to the nebula. Last modified by Rima from Vienna, Austria on 34/07/2018 [2]
The experts agree. Astropixels.comThe current location of rigel in a region with nebulosity is rigel. The star is illuminating several dust clouds within its vicinity. One of these being the IC 2118 or Witch Head Nebula. Rigel can also be associated with M42 Orion Nebula, which although is more or less on the same line as the star’s sight-is nearly twice as far from Earth. Although Rigel may be far from the Nebula, its projected path through space is close enough to it that even with the differences in distances. Rigel, which is often classified as an outlying Orion OB1 Association member, is also associated with other bright stars in the region. It is a Taurus-Orion R1 Association member, while the OB1 Association is reserved for stars that are closer to the nebula or more recent formed. Mo Gray (from Anqing in China, November 1, 2021). [3]
– Rigel B: The other component(s) of the system, Rigel B, is actually a binary system in itself, with a separation of more than 2,200 AU between Rigel A and Rigel B. This distance is equivalent to 12 light days. Therefore, it’s no surprise that no orbital motion has ever been detected, even though all components share the same motion trajectory. Rigel B’s members are B9V-class, blue-white main sequence star B9V-class stars. They have 2.5 times and 1.9x the Sun respectively. However, the components of Rigel B are about 500 times less luminous than Rigel A, which can sometimes make it challenging to spot the pair in small telescopes, although magnifications of around 150× with 7-inch instruments will usually show Rigel B in good seeing conditions. Timothy Jimenez, Novosibirsk (Russia) on April 17, 2021 revised this article. [4]