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Iota Piscium
Iota Piscium (Iota Psc, ι Piscium, ι Psc) is a star located in the constellation Pisces. With an apparent magnitude of +4.13, it is visible to the naked eye. Parallax measurements give a distance of 44.73 light-years. Its spectral type is F7V, with the luminosity class V suggesting it is in the main sequence, fusing atoms of hydrogen into helium. The star has 1.15 times the Sun's mass and 1.60 times the Sun's radius. It is radiating 3.6 times the Sun's luminosity at an effective temperature of . It is a suspected variable star. The star was once thought to have one or two stellar companions, but both are line-of-sight coincidences. It displays a far-infrared excess at a wavelength of 70μm, suggesting it is being orbited by a cold debris disk. Naming In Chinese, (), meaning ''Thunderbolt'', refers to an asterism consisting of ι Piscium, β Piscium, γ Piscium, θ Piscium, and ω Piscium. Consequently, the Chinese name Chinese may refer to: * S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pisces IAU
Pisces may refer to: *Pisces (astrology), an astrological sign Astronomy *Pisces (constellation), a constellation **Pisces Overdensity, an overdensity of stars in the Milky Way's halo that is situated in the Pisces constellation **Pisces II, a satellite galaxy of the Milky Way **Pisces Dwarf, a satellite galaxy of the Triangulum Galaxy **Pisces (Chinese astronomy), the division of the sky in traditional Chinese uranography that lies across the modern constellation Pisces Science and technology * Pisces, an obsolete (because of land vertebrates) taxonomic superclass including all fish *PISCES (Personal Identification Secure Comparison and Evaluation System), a border control database system administered by the United States Department of State Music * ''Pisces'' (Art Blakey album), a 1961 album by Art Blakey & the Jazz Messengers *Pisces (James Arthur album), 205 *Pisces (band), a psychedelic rock band *"Pisces", a 2016 song by Jinjer from ''King of Everything'' (album) *"Pisces" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Excess
An infrared excess is a measurement of an astronomical source, typically a star, that in their spectral energy distribution has a greater measured infrared flux than expected by assuming the star is a blackbody radiator. Infrared excesses are often the result of circumstellar dust heated by starlight and reemitted at longer wavelengths. They are common in young stellar objects and evolved stars on the asymptotic giant branch or older. In addition, monitoring for infrared excess emission from stellar systems is one possible method that could enable a search for large-scale stellar engineering projects of a hypothetical extraterrestrial civilization; for example a Dyson sphere A Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its power output. The concept is a thought experiment that attempts to imagine how a spacefaring civilization would meet its energy re ... or Dyson swarm. This infrared excess would be the o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayer Objects
Bayer AG (English: , commonly pronounced ; ) is a German multinational pharmaceutical and biotechnology company and is one of the largest pharmaceutical companies and biomedical companies in the world. Headquartered in Leverkusen, Bayer's areas of business include: pharmaceuticals, consumer healthcare products, agricultural chemicals, seeds and biotechnology products. The company is a component of the EURO STOXX 50 stock market index. Bayer was founded in 1863 in Barmen as a partnership between dye salesman Friedrich Bayer (1825–1880) and dyer Friedrich Weskott (1821–1876). The company was established as a dyestuffs producer, but the versatility of aniline chemistry led Bayer to expand its business into other areas. In 1899, Bayer launched the compound acetylsalicylic acid under the trademarked name Aspirin. Aspirin is on the World Health Organization's List of Essential Medicines. In 2021, it was the 34th most commonly prescribed medication in the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F-type Main-sequence Stars
An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.Tables VII and VIII. This temperature range gives the F-type stars a whitish hue when observed by the atmosphere. Because a main-sequence star is referred to as a dwarf star, this class of star may also be termed a yellow-white dwarf (not to be confused with white dwarfs, remnant stars that are a possible final stage of stellar evolution). Notable examples include Procyon A, Gamma Virginis A and B, and KIC 8462852. Spectral standard stars The revised Yerkes Atlas system (Johnson & Morgan 1953) listed a dense grid of F-type dwarf spectral standard stars; however, not all of these have survived to this day as stable standards. The ''anchor points'' of the MK spectral classification system among the F-type main-sequence dwarf stars, i.e. thos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Star Names
Chinese star names ( Chinese: , ''xīng míng'') are named according to ancient Chinese astronomy and astrology. The sky is divided into star mansions (, ''xīng xiù'', also translated as "lodges") and asterisms (, ''xīng guān''). The ecliptic is divided into four sectors that are associated with the Four Symbols, guardians in Chinese mythology, and further into 28 mansions. Stars around the north celestial pole are grouped into three enclosures (, ''yuán''). The system of 283 asterisms under the Three Enclosures and Twenty-Eight Mansions was established by Chen Zhuo of the Three Kingdoms period, who synthesized ancient constellations and the asterisms created by early astronomers Shi Shen, Gan De and Wuxian. Since the Han and Jin dynasties, stars have been given reference numbers within their asterisms in a system similar to the Bayer or Flamsteed designations, so that individual stars can be identified. For example, Deneb (α Cyg) is referred to as (''Tiān Jīn S� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omega Piscium
Omega Piscium (Omega Psc, ω Piscium, ω Psc) is a star approximately 106 light years away from Earth, in the constellation Pisces. It has a spectral type of F4IV, meaning it is a subgiant A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as giant stars. The term subgiant is applied both to a particular spectral luminosity class and to a stage in the evolution .../dwarf star, and it has a temperature of 6,600 kelvins. It may or may not be a close binary star system. Variations in its spectrum were once interpreted as giving it an orbital period of 2.16 days, but this claim was later debunked as false. It is 20 times brighter than the Sun and is 1.8 times greater in mass, if it is a single star. It is part of the drawn asterism in classic and modern renderings as the start of the tail, east of the Circlet of Pisces, a near-circle which forms all but the tail (the head and body) of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theta Piscium
Theta Piscium, Latinized from θ Piscium, is a single, orange-hued star in the zodiac constellation of Pisces, the fish. The annual parallax shift of this star was measured during the Hipparcos mission as 21.96 mas, which yields a distance estimate of about 149 light years. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.27. The star is moving away from the Sun with a radial velocity of +6 km/s. At the estimated age of 2.5 billion years, this is an aging giant star with a stellar classification of K1 III, which means it has exhausted the supply of hydrogen at its core. It is a red clump star, indicating it is on the horizontal branch of its evolution and is generating energy through helium fusion at its core. Theta Piscium has 158% of the Sun's mass and its outer atmosphere has swollen to about 11 times the girth of the Sun. It is brighter yet cooler than the Sun, radiating 51.3 times the Sun's luminosity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Piscium
Gamma Piscium (γ Piscium) is a star approximately 135 light years away from Earth in the zodiac constellation of Pisces. It is a yellow star with a spectral type of G8 III, meaning it has a surface temperature of 4,833 K and is a giant star. It is slightly cooler than the Sun, yet it is 11 solar radii in size and shines with the light of 63 Suns. The star is a member of the red clump, which means it is undergoing core helium fusion. At an apparent magnitude of 3.7, it is the second brightest star in the constellation Pisces, between Eta and Alpha. Gamma Piscium moves across the sky at three-quarters of an arcsecond per year, which at 135 light years corresponds to 153 kilometers per second. This suggests it is a visitor from another part of the Milky Way Galaxy; in astronomical terms, it will quickly leave the vicinity of the Sun. Its metallicity is only one-fourth that of the Sun, and visitors from outside the thin disk that composes the Milky Way tend to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beta Piscium
Beta Piscium or β Piscium, formally named Fumalsamakah , is a blue-white hued star in the zodiac constellation of Pisces. Its apparent magnitude is 4.40, meaning it can be faintly seen with the naked eye. Based on parallax measurements taken during the Hipparcos mission, it is about 410 light-years (125 parsecs) distant from the Sun. Nomenclature ''β Piscium'' ( Latinised to ''Beta Piscium'') is the star's Bayer designation. It bore the traditional name ''Fum al Samakah'' from the Arabic فم السمكة ''fum al-samakah'' "mouth of the fish" (compare Fomalhaut). In 2016, the IAU organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN approved the name ''Fumalsamakah'' for this star on 1 June 2018 and it is now so included in the List of IAU-approved Star Names. In Chinese, (), meaning ''Thunderbolt'', refers to an asterism consisting of Beta Piscium and Gamma, Theta, Iota and Omega Piscium. Conseque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wall (Chinese Constellation)
The Wall mansion () is one of the Twenty-eight mansions of the Chinese constellations. It is one of the northern mansions of the Black Tortoise (Chinese constellation), Black Tortoise. Asterisms References Chinese constellations {{constellation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
