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List Of Star-forming Regions In The Local Group
This is a list of Star formation#Stellar nurseries, star-forming regions located in the Milky Way Galaxy and in the Local Group. Star formation occurs in molecular clouds which become Jeans instability, unstable to gravitational collapse, and these complexes may contain open clusters, clusters of young stars and regions of ionized gas called H II regions. Stars typically form in groups of many stars, rather than in isolation. Galactic Star-Forming Regions Extragalactic Star-Forming Regions See also * * * *List of nearest stars and brown dwarfs References External links Simbad {{DEFAULTSORT:Star-forming regions in the Local Group Astronomy-related lists H II regions Local Group Open clusters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cepheus B
Cepheus (Ancient Greek: Κηφεύς ''Kepheús'') may refer to: In Greek mythology * Cepheus (father of Andromeda), and King of Aethiopia * Cepheus (king of Tegea), the king of Tegea, Arcadia In astronomy * Cepheus (constellation), one of the 88 modern constellations * Cepheus (crater), a lunar impact crater In Computing * Cepheus (poker bot) Cepheus is the first poker playing program that "essentially weakly solved" the game of heads-up limit Texas hold 'em. This was the first imperfect information game played competitively by humans to be essentially solved. It was developed by th ... In modern fiction * Cepheus Daidalos, a fictional character in the manga and anime, Saint Seiya * Cepheus, the FM king in Mega Man Star Force * In the Galaxy Railways, one of the squads is named the Cepheus Platoon. Other uses * USS Cepheus (AKA-18), an ''Andromeda'' class attack cargo ship {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cygnus X (star Complex)
Cygnus-X is a massive star formation region located in the constellation of Cygnus at a distance from the Sun of 1.4 kiloparsecs (4,600 light years). As it is located behind the Cygnus Rift and its light is heavily absorbed by the Milky Way's interstellar dust, it is better studied in other wavelengths of the electromagnetic spectrum that penetrate it such as the infrared. Physical properties As studies done with the help of the Spitzer Space Telescope have shown, Cygnus-X has a size of 200 parsecs and contains the largest number of massive protostars as well as the largest stellar association (Cygnus OB2, with up to 2,600 stars of spectral type OB and a mass of up to 105 solar masses) within a radius of 2 kiloparsecs of the Sun. It is also associated with one of the largest molecular clouds known, with a mass of 3 million solar masses. Its stellar population includes a large number of early-type stars as well as evolved massive stars such as luminous blue variable candidat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nearest Stars And Brown Dwarfs
This list covers all known stars, brown dwarfs, and sub-brown dwarfs within of the Sun. So far, 131 such objects have been found, of which only 22 are bright enough to be visible without a telescope. The visible light needs to reach or exceed the dimmest brightness to be visible to the naked eye from Earth, 6.5 apparent magnitude. The known 131 objects are bound in 94 stellar systems. Of those, 103 are main sequence stars: 80 red dwarfs and 23 "typical" stars having greater mass. Additionally, astronomers have found 6 white dwarfs (stars that have exhausted all fusible hydrogen), 20 brown dwarfs, as well as 2 sub-brown dwarfs: WISE 0855−0714 (probably a rogue planet) and WISE 1741+2553. The closest system is Alpha Centauri, with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth. The brightest, most massive and most luminous object among those 131 is Sirius A, which is also the brightest object in Earth's night sky; its white dwarf co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30 Doradus
The Tarantula Nebula (also known as 30 Doradus) is a large H II region in the Large Magellanic Cloud (LMC), forming its south-east corner (from Earth's perspective). Discovery The Tarantula Nebula was observed by Nicolas-Louis de Lacaille during an expedition to the Cape of Good Hope between 1751 and 1753. He catalogued it as the second of the "Nebulae of the First Class", "Nebulosities not accompanied by any star visible in the telescope of two feet". It was described as a diffuse nebula 20' across. Johann Bode included the Tarantula in his 1801 ''Uranographia'' star atlas and listed it in the accompanying ''Allgemeine Beschreibung und Nachweisung der Gestirne'' catalogue as number 30 in the constellation "Xiphias or Dorado". Instead of being given a stellar magnitude, it was noted to be nebulous. The name Tarantula Nebula arose in the mid 20th century from its appearance in deep photographic exposures. 30 Doradus has often been treated as the designation of a star, or of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westerhout 49
In astronomy Westerhout 49 also known as W49, is a strong galactic thermal radio source characteristic of an HII region. It was discovered by Gart Westerhout in 1958. Its distance is estimated to be about 11.1 kpcs or 36,000 light years. and it lies in the galactic plane about the same distance from the Galactic Center as does the Sun. It has been compared to the giant HII region NGC 3603 which is about half as distant. Non-thermal radiation has been found which is believed to be from an old supernova remnant. Gaseous molecular outflows have been detected as well as H2O (water) masers . No optical counterpart has yet been discovered. While this is partly due to interstellar absorption, any tight clustering of stars at such a great distance in the galactic plane would be scarcely distinguishable from the general background. A study published in 2014, where the VLT has been used among other instruments, shows the presence of a very massive star in the central cluster of this star- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westerhout 43
Westerhout 43, also known as W43, is a region of star formation of our galaxy located in the constellation of Aquila at a distance of 6 kilo-parsecs (nearly 20,000 light-years) of the Sun, that is considered the region of the Milky Way that is most actively forming stars. Despite this, however, it is so heavily obscured by the interstellar dust that it is totally invisible in the optical and must be studied using other wavelengths that are not affected by it, such as the infrared or the radio waves. Physical properties This star-forming region is located in the ''5-kpc ring'', a ring with that radius that encircles the central bar of our galaxy and that contains most of its molecular hydrogen as well as most of its star formation. It is associated with a very massive complex of molecular clouds with a total mass of more than 7 million times more than the Sun and which is forming stars of all masses within star clusters that are less massive versions of those found on starbu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AFGL 2591
AFGL 2591 is a star forming region in the constellation Cygnus. Its dense cloud of gas and dust make its interior invisible to optical telescopes. Images in the infrared show a bright young stellar object, with an associated reflection nebula seen as a glowing cone projecting from the young star. A cluster of stars is forming within the molecular cloud, but most of the infrared radiation is coming from this star, AFGL 2591-VLA3. Initially AFGL 2591 was thought to be a single young, massive star expelling clouds of gas and dust in multiple events. It was estimated to be about 10 times the mass of the sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radi ... and at a distance of only . References Cygnus (constellation) Molecular clouds Reflection nebulae Star-forming regions [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carina Nebula
The Carina Nebula or Eta Carinae Nebula (catalogued as NGC 3372; also known as the Great Carina Nebula) is a large, complex area of bright and dark nebulosity in the constellation Carina, located in the Carina–Sagittarius Arm of the Milky Way galaxy. The nebula is approximately from Earth. The nebula has within its boundaries the large Carina OB1 association and several related open clusters, including numerous O-type stars and several Wolf–Rayet stars. encompasses the star clusters and . is one of the youngest known star clusters at half a million years old. is the home of , currently the most luminous star known in our Milky Way galaxy, together with the less luminous but more massive and famous Eta Carinae star system and the O2 supergiant . , , , , and are also considered members of the association. is the oldest and furthest from , indicating sequential and ongoing star formation. The nebula is one of the largest diffuse nebulae in our skies. Although it i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messier 17
*Messier (automobile), a French car produced 1925–1931
*Messier-Dowty and preceding companies in manufacture of aircraft undercarriage
{{disambiguation, surname
French-language surnames ...
Messier may refer to: People with the surname *Charles Messier, French astronomer *Éric Messier, former NHL defenseman *George Messier, French inventor *Jean-Marie Messier, former CEO of Vivendi Universal *Marc Messier, Canadian actor from Quebec *Mark Messier, former NHL player, Hall of fame class 2007 *Paul Arthur Messier, art conservator Other uses *Messier object, a set of 110 astronomical objects *Messier (crater) Messier is a relatively young lunar impact crater located on the Mare Fecunditatis. The crater has a discernible oblong shape that is not caused by foreshortening. The longer dimension is oriented in an east–west direction. Just to the wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eagle Nebula
The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611, and also known as the Star Queen Nebula) is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745–46. Both the "Eagle" and the "Star Queen" refer to visual impressions of the dark silhouette near the center of the nebula, an area made famous as the "Pillars of Creation" imaged by the Hubble Space Telescope. The nebula contains several active star-forming gas and dust regions, including the aforementioned Pillars of Creation. The Eagle Nebula lies in the Sagittarius Arm of the Milky Way. Characteristics The Eagle Nebula is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 5700 light-years distant. A spire of gas that can be seen coming off the nebula in the northeastern part is approximately 9.5 light-years or about 90 trillion kilometers long. The cluster associated wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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