Olympus is the colonial capital of Rigel and is one of the first "clean cities" in human history, running completely on renewable energy and having nearly a complete lack of crime. Analysis of the Hα and Hγ line profiles, and measurement of the regions producing the lines, show that Rigel's stellar wind varies greatly in structure and strength. Rigel Mass. Calculations of mass loss from the Hγ line give (9.4±0.9)×10−7 M☉/yr in 2006-7 and (7.6±1.1)×10−7 M☉/yr in 2009–10. [77] The indigenous Boorong people of northwestern Victoria named Rigel as Collowgullouric Warepil.

Its radius is more than seventy times that of the Sun, and its surface temperature is 12,100 K. Due to its stellar wind, Rigel's mass-loss is estimated to be ten million times that of the Sun. These pulsations are stronger and more numerous in stars that have evolved through a red supergiant phase and then increased in temperature to again become a blue supergiant. He listed it as component D of β 555,[62] although it is unclear whether it is physically related or a coincidental alignment. What is the hink-pink for blue green moray? However, the measurements for this object may be unreliable. [30] It is fainter than Capella, which may also vary slightly in brightness. Rigel is generally the seventh-brightest star in the night sky and the brightest star in Orion, though it is occasionally outshone by Betelgeuse, which varies over a larger range.

The appellation “supergiant” is no exaggeration, either, as Rigel A has roughly 24 times the mass of the Sun, it shines 120,000 brighter, and is 80 times as big as the result of it swelling up, having depleted its hydrogen fuel supply. Observations over 18 nights in 1984 showed variations at red, blue, and yellow wavelengths of up to 0.13 magnitudes on timescales of a few hours to several days, but again no clear period. Using the Hipparcos distance of 860 light-years (264 parsecs), the estimated relative luminosity for Rigel is about 120,000 times that of the Sun (L☉),[16] but another recently published distance of 1,170 ± 130 light-years (360 ± 40 parsecs) suggests an even higher luminosity of 219,000 L☉. A fainter star at a wider separation might be a fifth component of the Rigel system. Does Jerry Seinfeld have Parkinson's disease?
[31] In those spectral types, the 'e' indicates that it displays emission lines in its spectrum, while the 'p' means it has an unspecified spectral peculiarity. Ano ang mga kasabihan sa sa aking kababata? [8] Their estimated orbital period is 63 years. Around a third of the time it is a normal absorption line. [83][84][85], The MS Rigel was originally a Norwegian ship, built in Copenhagen in 1924. Most notable of these is the 5°-long IC 2118 (Witch Head Nebula),[54][55] located at an angular separation of 2.5° from the star,[54] or a projected distance of 39 light-years (12 parsecs) away. [66], Rigel is expected to eventually end its stellar life as a type II supernova. For example, Rigel is believed to be in a region of nebulosity, its radiation illuminating several nearby clouds. Please do not edit this fiction without the writer's permission. It is associated with mass loss where there is simultaneously emission from a dense wind close to the star and absorption from circumstellar material expanding away from the star. [36][37] The overall spectrum is typical for a late B class star, with strong absorption lines of the hydrogen Balmer series as well as neutral helium lines and some of heavier elements such as oxygen, calcium, and magnesium. [8][24], The designation of Rigel as β Orionis (Latinized to Beta Orionis) was made by Johann Bayer in 1603. There is no parallax for Rigel in Gaia DR2. [11] It is one of the closest known potential supernova progenitors to Earth,[16] and would be expected to have a maximum apparent magnitude of around −11 (about the same brightness as a quarter Moon or around 300 times brighter than Venus ever gets. [15][40], As early as 1888, the heliocentric radial velocity of Rigel, as estimated from the Doppler shifts of its spectral lines, was seen to vary. Rigel A is a massive, luminous star of the spectral type B8 Ia, indicating a bright supergiant appearing blue or blue-white in colour. Rigel is the brightest and most massive component – and the eponym – of a star system of at least four stars that appear as a single blue-white point of light to the naked eye.

One of the first worlds discovered by humanity capable of sustaining life, it was quickly terraformed and colonized. Al-Sufi's book was translated into Latin and other European languages. Loop and arm structures were also detected within the wind. Rigel's color index varies slightly, but this is not significantly correlated with its brightness variations. Al-Sufi himself planned the figures, two for each constellation: one shows how they appear to an observer looking up toward the heavens; the other how they appear to the observer looking down upon a celestial globe. [8] Friedrich Georg Wilhelm von Struve first measured the relative position of the companion in 1822, cataloguing the visual pair as Σ 668. The star has a radius almost 79 times that of the Sun and an estimated mass of 21 solar masses. These designations frequently appear in the scientific literature,[12][15][29] but rarely in popular writing. It is effectively governed by Nigel Alen. [8] Gaia DR2 finds it to be a 12th magnitude sunlike star at approximately the same distance as Rigel. Why don't libraries smell like bookstores? Rigel is located only a few light-years from Earth, placing it in the "Aegis Ring", a region of space that is heavily-protected by the Systems Alliance. [34] Correspondingly it is also the first star of Orion to set in most of the Northern Hemisphere. [16], From observations of the variable Hα spectral line, Rigel's mass-loss rate due to stellar wind is estimated be (1.5±0.4)×10−7 solar masses per year (M☉/yr)—about ten million times more than the mass-loss rate from the Sun. Milli-magnitude variations were observed, and gradual changes in flux suggest the presence of long-period pulsation modes.

The Moriori people of the Chatham Islands, as well as some Maori groups in New Zealand, mark the start of their New Year with Rigel rather than the Pleiades. Rigel is believed to have formed around 8 million years ago. and it is called Algebar. The surface abundances of carbon, nitrogen, and oxygen seen in the spectrum are compatible with a post-red supergiant star only if its internal convection zones are modeled using non-homogeneous chemical conditions known as the Ledoux Criteria. [25] Astronomer James B. Kaler has speculated that Rigel was designated by Bayer during a rare period when it was outshone by the variable star Betelgeuse, resulting in the latter star being designated "alpha" and Rigel designated "beta". Rigel is a blue supergiant that is the brightest star in the constellation Orion (the Hunter). Two stars in the system can be seen by large telescopes, and the brighter of the two is a spectroscopic binary. The 2007 Hipparcos new reduction of Rigel's parallax is 3.78±0.34 mas, giving a distance of 863 light-years (265 parsecs) with a margin of error of about 9%. https://masseffectfanfiction.fandom.com/wiki/Rigel?oldid=9310. When it runs out of fuel, it can no longer push gravity back, and then the core will collapse. When did organ music become associated with baseball? Further observations of radial velocity variations indicate that it simultaneously oscillates in at least 19 non-radial modes with periods ranging from about 1.2 to 74 days. [8][60] Although not particularly faint at visual magnitude 6.7, the overall difference in brightness from Rigel A (about 6.6 magnitudes or 440 times fainter) makes it a challenging target for telescope apertures smaller than 15 cm (6 in). [53], In 1871, Sherburne Wesley Burnham suspected Rigel B to be a binary system, and in 1878, he resolved it into two components. Fictional depictions of Rigel can be found in Star Trek, The Hitchhiker's Guide to the Galaxy, and many more books, films, and games.