Wednesday, April 20, 2016

Archives on Stars Wiki: Betelgeuse the orange red giant star



Betelgeuse in fiction
From Wikipedia, the free encyclopedia

The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction.

The star Betelgeuse

Betelgeuse (Alpha Orionis) is a bright red star in the constellation Orion frequently featured in works of science fiction. A red supergiant, Betelgeuse is one of the largest and most luminous stars known. If it were at the center of our Solar System its surface would extend past the asteroid belt, possibly to the orbit of Jupiter or even beyond, wholly engulfing Mercury, Venus, Earth and Mars. Classified as an M-type main sequence star, and located around 640 light-years from Earth, Betelgeuse shares with the much closer but smaller star Altair (and with R Doradus) the distinction that its image has been resolved by astronomers (see graphic[1]).

In another false-color image obtained by infrared interferometry[2] two large, bright star spots spanning ~10 milliarcseconds are visible on the surface of Betelgeuse, possibly representing enormous convective cells rising from below the supergiant's surface.[3] Because of these, Betelgeuse appears to change shape periodically, with a complex, asymmetric envelope that is the product of a colossal ongoing loss of mass, as huge plumes of gas are continuously expelled from its surface (see "Tony and the Beetles" by Philip K. Dick, below). There is some evidence for the existence of close stellar companions of Betelgeuse, orbiting it within its gaseous envelope (see From a Changeling Star by Jeffrey Carver and the television series Space Battleship Yamato, below).

Astronomers believe that this tremendous star is only 10 million years old, but has evolved rapidly because of its great mass. Currently in a late stage of stellar evolution, it is expected to erupt in a Type II supernova, possibly within the next million years (see From a Changeling Star by Jeffrey Carver, "Transit of Betelgeuse" by Robert R. Chase and Calculating God by Robert J. Sawyer, below).

Betelgeuse is the eighth brightest star in the night sky and second brightest star in the constellation of Orion, outshining its neighbour Rigel (Beta Orionis) only rarely. Distinctly reddish-tinted, it is a semiregular variable star whose apparent magnitude oscillates between 0.2 and 1.2, the widest range of any first magnitude star. It marks the upper right vertex of the Winter Triangle and center of the Winter Hexagon.[4][5]

There is considerable controversy about the Arabic language origin of the name Betelgeuse, with some dozens of possible derivations and spellings proposed and used across history. A theory that is gaining wide acceptance is that of Paul Kunitzsch, Professor of Arabic Studies at the University of Munich, who has proposed that the full name of the "ruddy star"[6] Betelgeuse is a corruption of the Arabic (yad al-jauzā' ) meaning the hand of the al-jauzā, where al-jauzā is the Central One, or Orion.[7] Since, prior to the scientific revolution, the study of astronomy was intimately connected with mythology and astrology, the ruddy star—like the red planet Mars—was for millennia closely associated with the archetypes of iron and war, and by extension the motifs of death and rebirth.[6] In South African mythology, Betelgeuse was a deadly lion stalking three zebras represented by the stars in Orion's belt in the age-old drama of predation and nourishment.[8] Betelgeuse has also appeared variously in the folklore of cultures including ancient Persia, India, China, and Japan.
General uses of Betelgeuse

Betelgeuse is a red supergiant star in the constellation Orion. At 488 light years away, it is the 10th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 0.45. Betelgeuse is a component of a multiple-star system. The iron abundance of Betelgeuse is +0.09 (123.0% of the Sun). It is moving through the Galaxy at a speed of 30.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,400 and 28,500 light years from the center of the Galaxy. It came closest to the Sun 3.5 million years ago when it had brightened to magnitude -0.34 from a distance of 339 light years.
Sky position: RA 5h 55.2m, Dec +7° 24.6'
Common designations: Betelgeuse, Alpha Orionis, 58 Orionis, HIP 27989, HD 39801

Betelgeuse may be referred to in fictional works for its metaphorical (meta) or mythological (myth) associations, or else as a bright point of light in the sky of the Earth, but not as a location in space or the center of a planetary system:

    Beetlejuice (1988), film written by Michael McDowell, Warren Skaaren and Larry Wilson, and directed by Tim Burton. Barbara and Adam Maitland visit their lovely New England country home; the trouble is, they seem to be dead (there was some sort of accident on the way). When the house is sold—as part of the estate settlement—to an obnoxious animate family, the Maitlands hire Betelgeuse, an undead "bio-exorcist" who gets rid of living apparitions rather than dead ones. Although his proper name Betelgeuse, from the star in Orion, is used throughout the film's screenplay (sample: BETELGEUSE: You want to get somebody out of your house. I want to get somebody out of your house.[14]), it only appears visually (on his epitaph) at the end of the film—making it surprising how many moviegoers immediately understood the astronomical pun in the film's title.[15] (sky)

There follow references to Betelgeuse as a location in space or the center of a planetary system, categorized by genre:
Literature

    "Shell Game" (1954), short story by Philip K. Dick. A group of paranoid mental patients long stranded on Betelgeuse II discover the remains of their shipwrecked hospital vessel "...sunk in the half-liquid ooze that made up the surface of Betelgeuse II. Nocturnal phosphorescence danced and flitted over the bog..."[18] They comb through the hulk, seeking evidence to resolve a matter of contention: Are they all the victims of a conspiracy instigated by the alien, shell-clad Beetles, or by Terrans—or is there no conspiracy at all? The story explores the difficulty of distinguishing delusion from actuality, and later served as a partial inspiration for the psychiatric asylum world in the novel Clans of the Alphane Moon. The story also represents an early example of Dick's paranoia about the manipulation of consensual reality and his obsessive revisiting of the conflict between objective reality and a world of appearances imposed upon characters by various means and processes.[19]

    Planet of the Apes (1963), novel by Pierre Boulle. Professor Antelle, a scientific genius of Earth, has invented a spaceship that can travel at nearly the speed of light. He and his companions voyage to the star Betelgeuse, said to be "about three hundred light years distant from our planet," and "emit[ting] red and orange lights";[23] at the end of their spacefaring they awaken from cryosleep to discover themselves near an earthlike planet that they name Soror (Sister). The crew lands, is overcome by a tribe of primitive humans, and then captured by intelligent gorillas and chimpanzees, who enslave them and treat them as dumb beasts. At the novel's climax, they make a startling discovery about the history of Soror. They escape and return to the Earth, where they make an even more startling discovery.[note 1]

    Dune (1965) and other novels in the Dune universe by Frank Herbert. Bela Tegeuse is the common name of Kuentsing V, third stopping place of the Zensunni (Fremen) forced migration. This name is a probable corruption of Betelgeuse.[26]

    The Hitchhiker's Guide to the Galaxy (1978- ), novels and other media by Douglas Adams. Ford Prefect, roving researcher for that "wholly remarkable book," The Hitchhiker's Guide to the Galaxy, hails from a small planet somewhere in the vicinity of Betelgeuse as does his semi-cousin Zaphod Beeblebrox, with whom he shares three mothers. References to residents and places on the planets orbiting Betelgeuse (for example Zaphod's favourite mother, Mrs. Alice Beeblebrox, who is a resident of 108 Astral Crescent Zoovroozlechester Betelgeuse V) are made throughout most versions of the Hitchhiker's Guide saga.[27]

    The Robots of Dawn (1983), novel by Isaac Asimov. Detective Elijah Baley, fresh from his detecting successes in The Caves of Steel, is summoned to the Spacer world Aurora (Dawn) to investigate a case of "roboticide": The mind of R. Jander Panell, a humaniform robot similar to R. Daneel Olivaw, has been destroyed with a robot block ("mental freeze-out").[28] On his approach to Aurora he tries out an astrosimulator which projects a view of space directly onto his visual cortex; wishing to get a view of his nearby destination, he uses the star Betelgeuse as a reference point.[28]

    Calculating God (2000), novel written by Robert J. Sawyer. The alien visitor Hollus comes here to study accumulated human knowledge, with the intention of gathering evidence about the existence of God. At the end of the novel, the star Betelgeuse becomes a supernova in the sky of Earth, threatening all life within hundreds of light-years, and now humanity (see graphic). Hollus explains that the actual cataclysm was purposely ignited centuries ago by the physically moribund civilization of Groombridge 1618 III in order to sterilize the stellar neighborhood, an act performed to protect from the meddling of nearby races the otherwise vulnerable virtual reality machinery that would house and immortalize the dying species' personalities.[32]

    Space Battleship Yamato (1974–75), Japanese anime series written by Leiji Matsumoto and Yoshinobu Nishizaki, and directed by Leiji Matsumoto. The surface of the Earth is rendered uninhabitable by a radioactive meteor attack launched by aliens from the planet Gamilas in the Large Magellanic Cloud. Informed of the availability of a global decontamination device from a different, friendlier LMC planet, humans secretly build a huge intergalactic retrieval ship incorporating the hulk of the WWII superdreadnaught Yamato. In the 12th of 26 episodes, the starship Yamato is lured into a trap near Betelgeuse and escapes by passing out of ken through the star's corona.

    Blade Runner (1982), film. Betelgeuse (α Ori) and Bellatrix (γ Ori) are the two shoulders of the hunter figure in the constellation Orion (see graphic). In his much-quoted Tears in rain soliloquy, which has been described as "perhaps the most moving death soliloquy in cinematic history,"[33] the dying replicant Roy Batty declares, "I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tannhauser Gate. All those moments will be lost in time, like tears in rain. [pause] Time to die." See also Gamma Orionis (Bellatrix).

See also

Betelgeuse is referred to as a location in space or the center of a planetary system unusually often in fiction. For a list containing many stars and planetary systems that have a less extensive list of references, see Stars and planetary systems in fiction.
Notes and references
Notes

    In the 1968 film version (having the same name as the novel, Planet of the Apes), Commander George Taylor (Charlton Heston) states, "We're some 320 light years from Earth on an unnamed planet in orbit around a star in the constellation of Orion."[24] In the novel Planet of the Apes that star is Betelgeuse. The distance declared by Heston in the film accords well with the value stated for Betelgeuse early in the novel—"about three hundred light years distant from our planet" (notwithstanding that the current best value for the distance to Betelgeuse is at least 500 ly from the Earth[25]). It is also true that no other major star in Orion is anywhere near 320 light years away. In spite of this narrowing of the field of candidates, circumstantial evidence weighs against the film's destination sun being identified as Betelgeuse: rather than looming crimson in the sky as a red supergiant, it appears indistinguishable from the Sun of our own planet—where in fact the film was made.

In Boulle's novel, the spacefarers do not "awaken from cryosleep"—indeed, they do not utilize cryosleep at all, but remain awake during the nearly two years of ship-time spent on the journey. It is in the 1968 film version that so-called cryosleep is used by the American astronauts; the astronaut Taylor (portrayed by Charlton Heston) refers to "the long sleep" of nearly a year of ship-time during which his crew spends the majority of their voyage towards the unnamed star that is their destination.

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