[12] Other documents that detailed sentient species included the Universal Encyclopedia. A total of 17 objects have been placed in class Y as of August 2013. This classification system was later modified by Annie Jump Cannon and Antonia Maury to produce the Harvard spectral classification scheme. Edit . About 1 in 33 (3.03%) of the main-sequence stars in the solar neighborhood are F-type stars. This number corresponds to the temperature of the star and approximately follows the temperature scale used for class M giants. ), These beings have gained powers through direct contact with the Power Cosmic, alien influence, or by any space age technology. Most mammals were covered in hair. By 1866, he had developed three classes of stellar spectra, shown in the table below. Class W is further divided into subclasses according to the relative strength of nitrogen and carbon emission lines in their spectra (and outer layers). Other notable forms were Wookiees, Cereans, Bothans and Sullustans. ), These are beings who have been greatly enhanced, whether on purpose or by accident, to the point where their abilities and powers are truly remarkable. Take your favorite fandoms with you and never miss a beat. For the Korean nuclear fusion project, see, Classes MS and SC: intermediary carbon-related classes, Non-stellar spectral types: Classes P and Q, Stellar classification, habitability, and the search for life, This is the relative color of the star if, Chromaticity can vary significantly within a class; for example, the. Another subset of cool carbon stars are the C-J type stars, which are characterized by the strong presence of molecules of 13CN in addition to those of 12CN. (Examples: Marrow and Maggot. The spectral type is formed by the letter S and a number between zero and ten. Common examples of this form of life were the Verpine, Fefze, Killik, Bartokk, Gand, and Geonosians. Class M stars are by far the most common. Several classifications have been made for mutants alone. A number following a comma is a scale between 1 and 9 based on the ratio of ZrO and TiO. The non-standard designation S10 has only been used for the star Chi Cygni when at an extreme minimum. [98], The latest brown dwarf proposed for the Y spectral type, WISE 1828+2650, is a > Y2 dwarf with an effective temperature originally estimated around 300 K, the temperature of the human body. [110][112], Two or more of the type letters may be used to indicate a white dwarf that displays more than one of the spectral features above. This mechanism provided ages of the Sun that were much smaller than what is observed in the geologic record, and was rendered obsolete by the discovery that stars are powered by nuclear fusion. Their classification uses a different set of spectral types from element-burning “live” stars. [102] Subdwarfs appear bluer than disk objects. [28], Additional nomenclature, in the form of lower-case letters, can follow the spectral type to indicate peculiar features of the spectrum.[29]. These proportions are fractions of stars brighter than absolute magnitude 16; lowering this limit will render earlier types even rarer, whereas generally adding only to the M class. Further the classification also includes those whose powers are only activated by physical contact with someone of the same genetic template, commonly siblings, though not limited to that particular familial bond. A capital ship is defined as any vessel that has a length exceeding one hundred meters. Star Wars Fanon is a FANDOM Movies Community. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines. Due to low surface gravity in giant stars, TiO- and VO-bearing condensates never form. The spectrum of a class M star contains lines from oxide molecules (in the visible spectrum, especially TiO) and all neutral metals, but absorption lines of hydrogen are usually absent. (Examples: Jean Grey, Franklin Richards, and Vulcan. Most of them are the highest form of technology the world has ever known. This page is to help classify characters by powers and origins. Those most similar to class M stars have strong ZrO absorption bands analogous to the TiO bands of class M stars, whereas those most similar to carbon stars have strong sodium D lines and weak C2 bands. The white dwarf types are as follows:[110][111], The type is followed by a number giving the white dwarf's surface temperature. Planetary nebulae are dynamic and tend to quickly fade in brightness as the progenitor star transitions to the white dwarf branch. [13] Because the classification sequence predates our understanding that it is a temperature sequence, the placement of a spectrum into a given subtype, such as B3 or A7, depends upon (largely subjective) estimates of the strengths of absorption features in stellar spectra. ), Hybrids are beings created by the merging of different genetics, such as a child born from two different races. They make up about 12% of the main-sequence stars in the solar neighborhood. The basic classification is usually followed by an abundance indication, following one of several schemes: S2,5; S2/5; S2 Zr4 Ti2; or S2*5. [3], The five characteristics of lifeforms were organization (a distinct form and appearance), irritability (the ability to respond to external stimuli), metabolism (the ability to convert energy to stay alive), reproduction (the ability to create new lifeforms), and adaptation (the ability to change as their environments change).[4][5]. [89] Although such dwarfs have been modelled[90] and detected within forty light-years by the Wide-field Infrared Survey Explorer (WISE)[78][91][92][93][94] there is no well-defined spectral sequence yet and no prototypes. Conventional color descriptions are traditional in astronomy, and represent colors relative to the mean color of an A class star, which is considered to be white. Fractional numbers are allowed; for example, the star Mu Normae is classified as O9.7. "four out of five stars", see, "G star" redirects here. 22. [9] Despite these differences, most species were easily classified into a number of distinct categories: Mammalian sentient species were warm-blooded vertebrates, who nourished young through secretions from mammary glands. (Examples: Shazam, Wonder Woman, Doctor Strange, and Ghost Rider. Many institutions in the galaxy focused on the study of sentient species. Because brown dwarfs persist for so long—a few times the age of the universe—in the absence of catastrophic collisions these smaller bodies can only increase in number. We only know of one star that hosts life, and that is our own—a G class star with an abundance of heavy elements and low variability in brightness. [WC]. An additional categorization using lowercase letters was added to differentiate relative line appearance in spectra. The most notable were the University of Coruscant[12] and the University of Sanbra. Anthology Rogue One: A Star Wars Story (2016) Solo: A Star Wars Story (2018) In the MK system, a luminosity class is added to the spectral class using Roman numerals. [14], The Shi'ido researcher Mammon Hoole wrote the acclaimed The Essential Guide to Alien Species. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. They have given rise to various offshoots, such as Homo Magi and Homo Superior (Mutants), but don't have any natural powers of their own. Old neutron stars are relatively small and cold, and would fall on the far right side of the diagram. The Empire tried to apprehend its author shortly before publication, but the academic escaped and released his research through underground networks and NewsNets. [citation needed]. The gravity, and hence the pressure, on the surface of a giant star is much lower than for a dwarf star because the radius of the giant is much greater than a dwarf of similar mass. This is based on the width of certain absorption lines in the star's spectrum, which vary with the density of the atmosphere and so distinguish giant stars from dwarfs. Intensities of zirconium and titanium may be indicated explicitly. For these reasons NASA's Kepler Mission is searching for habitable planets at nearby main sequence stars that are less massive than spectral type A but more massive than type M -- making the most probable stars to host life dwarf stars of types F, G, and K.[115], Classification of stars based on their spectral characteristics, For the ranking system, e.g. [105] The suffix "pec" stands for peculiar. These are the rarest of all main-sequence stars. Class G main-sequence stars make up about 7.5%, nearly one in thirteen, of the main-sequence stars in the solar neighborhood.[e][8]. Objects with the beta (β) suffix (e.g. The white dwarf types are as follows: It is theorized that these proplyds are in a race with each other. TiO bands can be strong in class M stars, usually dominating their visible spectrum by about M5. [67] The terms "early" and "late" were carried over, beyond the demise of the model they were based on. From hot stars to cool, the order of stellar types is: O, B, A, F, G, K, M. (A traditional mnemonic for this sequence is “Oh Be A Fine Girl [or Guy], Kiss Me.”) Additional letters have been used to designate novas and less common types of stars. ), Alpha mutants have powerful, advantageous mutant traits and no disadvantageous flaws. The spectral classes O through M, as well as other more specialized classes discussed later, are subdivided by Arabic numerals (0–9), where 0 denotes the hottest stars of a given class. However, these are not always strictly adhered to. A number following a slash is a more recent but less common scheme designed to represent the ratio of carbon to oxygen on a scale of 1 to 10, where a 0 would be an MS star. They were generally divided into three classifications based on their level of sentience: sentient, semi-sentient, and non-sentient. [1][2] Sentient species were sometimes erroneously referred to as races, which more accurately referred to groups or subspecies within a species. DC – no strong spectral lines indicating one of the above categories. However, with modern equipment, the line is still apparent in the early B-type stars. Likely the darkest and grittiest Star Wars movie. Second when stated by the developers themselves, the game will contain fights similar to those seen in Sekiro. Stars are often referred to as early or late types. DAB – a hydrogen- and helium-rich white dwarf displaying neutral helium lines. Harvard astronomer Cecilia Payne then demonstrated that the O-B-A-F-G-K-M spectral sequence is actually a sequence in temperature. [95], The spectra of these prospective Y objects display absorption around 1.55 micrometers. They are a very dark red in color and brightest in infrared. At the Harvard College Observatory in the 1880s, during the compilation of the Henry Draper Catalogue of stars, more types were distinguished and were designated by letter in alphabetic sequence according to the strength of their hydrogen spectral lines. Later, in 1953, after some revisions of list of standard stars and classification criteria, the scheme was named the Morgan–Keenan classification, or MK,[16] and this system remains in use. This rises to 78.6% if we include all stars. [56][57] Finally, by 1912, Cannon had changed the types B, A, B5A, F2G, etc. (See the above note.). Stability, luminosity, and lifespan are all factors in stellar habitability. Plant sentient species synthesized energy from water, nutrients and sunlight. These are red giants, near the end of their lives, in which there is an excess of carbon in the atmosphere. An example star is HD 93129 B. Sentient species of this origin took many diverse forms, such as the Iyra, Hutt and Ee. [96][97] In fact, this ammonia-absorption feature is the main criterion that has been adopted to define this class. Immortality is also a possibility, but not a requirement. O-type stars frequently have complicated surroundings that make measurement of their spectra difficult. Other modern stellar classification systems, such as the UBV system, are based on color indexes—the measured differences in three or more color magnitudes. With increased carbon abundance, and some parallel s-process heavy element production, the spectra of these stars become increasingly deviant from the usual late spectral classes G, K, and M. Equivalent classes for carbon-rich stars are S and C. The giants among those stars are presumed to produce this carbon themselves, but some stars in this class are double stars, whose odd atmosphere is suspected of having been transferred from a companion that is now a white dwarf, when the companion was a carbon-star. Be stars are generally thought to feature unusually strong stellar winds, high surface temperatures, and significant attrition of stellar mass as the objects rotate at a curiously rapid rate. About 76% of the main-sequence stars in the solar neighborhood are class M stars. However, other forms of sentient life did exist, such as silicon-based or energy-based lifeforms. Most of this work was done by three assistants, Williamina P. Fleming, Antonia C. Maury, and Annie Jump Cannon. Jedi: Fallen Order is the upcoming action game tied to the universe of Star Wars , developed by Respawn Entertainment, the team behind Apex Legends and the series Titanfall. From the list of classifications in the australian new information comes to light on the evaluation of Star Wars Jedi: the Fallen Order.The last game of the note, the saga apparently will contain “a terrible scene”, according to the data contained on the board. Carbon-stars are stars whose spectra indicate production of carbon—a byproduct of triple-alpha helium fusion. Once included as type O stars, the Wolf-Rayet stars of class W or WR are notable for spectra lacking hydrogen lines. DBZ – a helium-rich metallic white dwarf. Corrections? This includes both red dwarfs and brown dwarfs that are very faint in the visible spectrum. Mutants are those born with the X-Factor or X-Gene. The apparent color[5] descriptions are what the observer would see if trying to describe the stars under a dark sky without aid to the eye, or with binoculars. Close. Neutral metals (Fe I, Cr I) beginning to gain on ionized metal lines by late F. Their spectra are characterized by the weaker hydrogen lines and ionized metals. The lettering system displayed the gradual decrease in hydrogen absorption in the spectral classes when moving down the alphabet. Each letter class is then subdivided using a numeric digit with 0 being hottest and 9 being coolest (e.g., A8, A9, F0, and F1 form a sequence from hotter to cooler). Brown dwarfs of spectral class Y are cooler than those of spectral class T and have qualitatively different spectra from them. [3], One of the major works on sentientology, Obo Rin's Catalog of Intelligent Life in the Galaxy, was commissioned by Lord Vader, and was carried out under the auspices of Major Vontenn, Liaison Officer of Sentiology Studies. L3blue) indicates unusual blue near-infrared colors for L-dwarfs without obvious low metallicity, Magnetic white dwarf with detectable polarization, Magnetic white dwarf without detectable polarization, WNE (WN2 to WN5 with some WN6) – hotter or "early", WNL (WN7 to WN9 with some WN6) – cooler or "late", Extended WN classes WN10 and WN11 sometimes used for the Ofpe/WN9 stars, h tag used (e.g. The fact that the Harvard classification of a star indicated its surface or photospheric temperature (or more precisely, its effective temperature) was not fully understood until after its development, though by the time the first Hertzsprung–Russell diagram was formulated (by 1914), this was generally suspected to be true. O-type stars are very hot and extremely luminous, with most of their radiated output in the ultraviolet range. DAZ – a hydrogen-rich metallic white dwarf. In the 1860s the Italian astronomer Angelo Secchi distinguished four main spectral types of stars. These individuals are at the peak of evolution due to manipulation or enhancement of some sort. Vanadium(II) oxide bands become present by late M. A number of new spectral types have been taken into use from newly discovered types of stars.[78]. [115] While there are many problems facing life on red dwarfs, due to their sheer numbers and longevity, many astronomers continue to model these systems. O-type spectra formerly were defined by the ratio of the strength of the He II λ4541 relative to that of He I λ4471, where λ is the radiation wavelength. [65], The stellar classification system is taxonomic, based on type specimens, similar to classification of species in biology: The categories are defined by one or more standard stars for each category and sub-category, with an associated description of the distinguishing features.[66]. Excluding colour-contrast illusions in dim light, there are no green, indigo, or violet stars. A member of the Gran species stands alongside members of the Gungan, Herglic, and H'nemthe species. Imperial-class Star Destroyer (TrueSoren), Invincible-class Dreadnaught (RJF version), MC90-class Battlecruiser (Darth Hazelyn's Timeline), Mor Nizhoqaaf Eklliane I-class battleship, Starcatcher-class destroyer (Cail's Empire), Terror-class super battle carrier (RotES), https://swfanon.fandom.com/wiki/Category:Capital_ship_classes?oldid=939945. [10] Some insectoid species evolved into different forms, such as humanoid insect species. In these cases, two special symbols are used: For example, a star classified as A3-4III/IV would be in between spectral types A3 and A4, while being either a giant star or a subgiant. The vast … They may still be found in old editions of star catalogs: R and N have been subsumed into the new C class as C-R and C-N. … (Examples: Green Lantern, Nova, and Venom. Red supergiants are cooler and redder than dwarfs of the same spectral type, and stars with particular spectral features such as carbon stars may be far redder than any black body. The Sojourn: the new video gameplay fixed the release date of the puzzle adventure, UseCrypt system recognized by Israeli Ministry of Defense as safe, Jennifer Grey (Dirty Dancing) divorce Clark Gregg after 19 years of marriage, Lovren celebrated the title in Liverpool with the fans: “I needed to do it and I’m happy”. About 1 in 800 (0.125%) of the main-sequence stars in the solar neighborhood are B-type main-sequence stars.[e][8]. Brown dwarfs start their lives with M-type spectra and will cool through the L, T, and Y spectral classes, faster the less massive they are; the highest-mass brown dwarfs cannot have cooled to Y or even T dwarfs within the age of the universe. Group XXI included Secchi type 4 stars, and group XXII included Wolf-Reyet stars. With the discovery of brown dwarfs, objects that form like stars but do not shine through thermonuclear fusion, the system of stellar classification has been expanded to include spectral types L, T, and Y. However, it departed from Imperial doctrine on a number of points. L0red) indicates objects without signs of youth, but high dust content, The blue suffix (e.g. Being able to control matter and energy on the sub-molecular scale also seems to be a requirement. Spectra of some very hot and bluish stars exhibit marked emission lines from carbon or nitrogen, or sometimes oxygen. 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