It contains areas of massive H II emission, large clouds of partly ionized gas which show evidence of recent star forming activity. In Greek mythology, Sagittarius represents a centaur, a half human, half horse creature with the torso of a man and the body and four legs of a horse. The clusters age and low levels of nickel found in it led astronomers to believe that it may have originated in the Sagittarius Dwarf Spheroidal Galaxy (Sag DEG). Beta Sagittarii is a designation shared by two star systems, Beta-1 Sagittarii and Beta-2 Sagittarii, which lie 0.36 apart in the sky. Chiron was wise and skilled not only in the arts of war but also healing and philosophy. The Quintuplet Cluster is another dense open cluster located in same region as the Arches Cluster, about 26,000 light years from Earth and 100 light years from the centre of the Milky Way. Successive generations of stars have built up the metallic abundances we see today. The constellation of Sagittarius (which literally means "archer" in Latin, per Britannica) is said to be a centaur or satyr holding a bow and arrow, according to Gods and Monsters. Each appears in a different hue red, orange, yellow, and green-tinted bands of gas are visible, with clear patches of space at the heart of the nebula. The galaxy is about 10,000 light years in diameter and it consists of four globular star clusters, the main one of which was discovered in 1994. It's easy to see why the myths behind Centaurus and Sagittarius often get confused. NGC 6544 is a globular cluster located less than a degree southeast of the Lagoon Nebula. Located in the Galactic centre region, the Pistol Star lies approximately 25,000 light years from our solar system. Sagittarius: The Archer Myth based on the original Greek legend Once upon a time in the ancient lands of Greece, long before horses galloped under the weight of humans, there lived the great Chiron, the centaur. It is about 15 light years in diameter. It cannot be seen visually, but must be observed in radio, X-ray and infrared bands. Greek mythology held that both satyrs and centaurs were mostly huge, boorish jerks, but Crotus and Chiron were the exceptions: intelligent, kind, sensitive, and sympathetic to humans. In these clusters, even more stars squeeze into the objects core than on average, such that the brightness of the cluster increases steadily towards its centre. They have the head and torso of a man, but the bottom half of a hoofed beast. Most sources identify Sagittarius as Chiron, the son of the Titan Cronus, according to Globe at Night. Most interpretations conclude that the mythology of Sagittarius refers to the centaurChiron, who was accidentally shot by Hercules (Greek mythology) with a poison arrow. The cluster is about 19 light years across. Each sign is represented by an animal or a mythological figure. This is the stars modern name, which is either Babylonian or Assyrian in origin. It is located approximately 17,300 light years from Earth. As understood through the centaur, the Sagittarius sign is as optimistic as the archer but . It is a known X-ray source. It was discovered by Charles Messier on August 31, 1780, along with another globular cluster, Messier 70. During this time the black hole flared up in X-ray intensity half a dozen or more times. Never observed anywhere in the bulge before, this peculiar cocktail of stars suggests that Terzan 5 is in fact one of the bulges primordial building blocks, most likely the relic of a dwarf galaxy that merged with the Milky Way during its very early days. Rho Sagittarii is a binary star with a subgiant belonging to the spectral class F0 as the primary component and a K0 type giant as the companion, separated by 0.46 from the primary. Artist conception of the December 27, 2004 gamma ray flare expanding from SGR 1806-20. The nebula was discovered by Truman Safford on 28 August, 1867. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters. Sagittarius A consists of the supernova remnant Sagittarius A East, the spiral structure Sagittarius A West, and a bright radio source located at the centre of the spiral, Sagittarius A*. The stars are located at different distances from the solar system and are not gravitationally bound. Set against a backdrop of bright stars, the rust-colored object lies in the constellation of Sagittarius (The Archer), in the southern sky. Satyrs did.) The clusters small central region has one of the highest star densities in the Milky Way. It is approximately 77.3 light years distant. The Bubble Nebula is an emission nebula located in Barnards Galaxy. NGC 6624 contains six confirmed pulsars and a low-mass X-ray binary, designated 4U 1820-30, with an orbital period of only 11.5 minutes. NGC 6723 is a globular star cluster in Sagittarius, near the border with Corona Australis. This was the largest event of its kind seen in the Milky Way since 1604, when the type Ia supernova SN 1604 (Keplers Nova) was observed by the German astronomer Johannes Kepler in the direction of Ophiuchus constellation. Sagittarius constellation has its roots in Sumerian mythology. It has an apparent magnitude of 15.5. Gamma Sagittarii is also known by its traditional names, Alnasl and Nushaba. The cluster lies at a distance of about 16,000 light years and has a magnitude of 9.30. The two-lobed nebula surrounds the central hot white dwarf that produces a hot wind with a speed of 300 km/s. It was discovered by William Herschel on May 22, 1784. It has a half-mass diameter of 102 and linear radius of 2.7 light years. It is a densely populated cluster, classified as class I. They both were known to hunt with a bow and arrow (though this is a bit misleading as centaurs did not traditionally use a bow and arrow. The nebula expands at the velocity of about 32 km/s and occupies an area of 44 arc seconds. The cluster was discovered by Charles Messier in 1778. The brightest stars in the cluster shine at magnitude 15. The Red Spider Nebula is a planetary nebula that occupies an area of 1.5 arc minutes in the northwestern part of Sagittarius. It may look like something from The Lord of the Rings, but this fiery swirl is actually a planetary nebula known as ESO 456-67. Also known as the Archer, Sagittarius is represented by the symbol of a bow and arrow. The white dwarf emits sufficient ultraviolet radiation to illuminate the gas it has expelled, which can just be seen in this image as the ring of red material. This cosmic pair is set against millions of glowing stars from the brightest part of the Milky Way a region so dense with stars that barely any dark sky is seen across the picture.This part of the constellation of Sagittarius (The Archer) is one of the richest star fields in the whole sky the Large Sagittarius Star Cloud. It is a blue class B giant with an apparent magnitude of 1.79 and a luminosity 375 times that of the Sun. The star was last occulted by a planet on November 17, 1981, when Venus passed in front of it. Together these are providing a vast legacy of publicly available data for the global astronomical community. It has a radius of 0.95 arc minutes. It is a red supergiant located about 10,000 light years from Earth, with an apparent magnitude varying between 8.5 and 11.The stars diameter is 1,460 times the diameter of the Sun. The red dwarf MOA-2009-BLG-387L, located almost 20,000 light years away, is host to an orbiting planet with a mass between 1.0 and 6.7 times that of Jupiter. The star cluster 1806-20 is home to many massive stars that are expected to end their lives as supernovas in the next few million years. Ruprecht 147, also catalogued as NGC 6774, is a dispersed open cluster in Sagittarius. Alternatively, some mythology identifies Sagittarius as the son of Pan, the god who created archery. The huge number of stars that light up this region dramatically emphasise the blackness of dark clouds like Barnard 86, which appears at the centre of this new picture from the Wide Field Imager, an instrument mounted on the MPG/ESO 2.2-metre telescope at ESOs La Silla Observatory in Chile. The companion star is more massive than the primary, but so faint that optical telescopes cannot detect it. SAGITTARIUS, The Archer, represents a centaur - half-man, half-horse, descended from Ixion, the man who dared to lust after Hera, wife of Zeus. Image: ESO/VPHAS+ team. Messier 25 is an open cluster with an apparent magnitude of 4.6, about 2,000 light years from Earth. Without the interstellar dust in the way, despite its distance it would be a fourth magnitude star, visible to the unaided eye. The cluster spans about 65 light years and occupies about 11 arc minutes of the apparent sky. However, it is pretty unlikely that the star has a sufficiently high spin velocity to produce a LGRB and the exact inclination of its spin axis is uncertain. Sagittarius is one of the 12 zodiac constellations that was first catalogued by the Greek astronomer Ptolemy in the 2nd century. As the stars interact with each other over time, lighter stars tend to pick up speed and migrate out toward the clusters edges, while the heavier stars slow and congregate in orbits toward the centre. It is also catalogued as ESO 456-70. Sagittarius is the 15th largest constellation in the sky. It will make its closest approach to the Sun in about 150,000 years, when it comes within 6.13 light years of our solar system. What is atypical for a B8V class star is that Alpha Sagittarii is emitting an excess flux of X-rays, possibly because its companion star is still in the pre-main sequence stage. The complex of star forming regions is obscured by interstellar dust, but it can be observed in radio, infrared and X-ray bands. Crotus, much like Chiron, was a skilled musician and hunter. (The other three are Messier 15 in the constellation Pegasus, Palomar 6 in Ophiuchus and NGC 6441 in Scorpius.). The brighter two components the Wolf-Rayet star and the class B companion are massive enough to be supernova candidates, with masses 10 and 20 times that of the Sun. Most of the centaurs were regarded in myth as bestial--they were, after all, half horse. The significance of the name is unknown, except that it is a proper name. The cluster spans 10 light years and has an apparent size of 5 arc minutes. Sagittarius is one of the largest southern constellations. Image: ESO/J. Each zodiac sign has a special symbol, or glyph, that's associated with the mythology behind it. The subgiant has an apparent magnitude of 3.93 and is approximately 122 light years distant from the solar system. The nebula lies at a distance of 6,000 light years from Earth and has an oval diameter of 15 to 22 arcseconds. Sag DEGs ellipse is already extended around our galaxy, and the main cluster will pass through the galactic disc of the Milky Way in the next million years. The primary component, Arkab Prior A, is a B9 type main sequence dwarf with an apparent magnitude of 3.96, while the companion star, Arkab Prior B, is a class A3 dwarf with an apparent magnitude of 7.4. Charles Messier discovered it in 1780 and subsequently included it in his catalogue. They are in fact located behind the nebula. Peony Star, or WR 102ka, is one of the most luminous stars known in our galaxy. M69 is only 1,800 light years away from M70 and located near the Galactic centre. Beta-1 Sagittarii, or Arkab Prior (prior because it leads Beta-2 across the sky), is a double star approximately 378 light years distant. It has an apparent magnitude of 3.32. Flower: Carnation Like a carnation, those born under the sign of Sagittarius are strong, yet beautiful. It has an apparent magnitude of 3.17. When Ehman discovered it, he printed his findings out, circled the signal and wrote Wow! next to it, which is how the signal got its name. The planetary nebula in the Sagittarius Cluster, designated GJJC1 is believed to be only 6,000 years old and has a blue star at the centre. NGC 6717 is a globular cluster 23,100 light years away. Omega Sagittarii is a G-type subgiant marking the northeast corner of the Terebellum, about 78 light years distant from Earth. OGLE-2006-BLG-109L (spectral class M0V) has two known exoplanets, suspected analogs of Jupiter and Saturn, discovered in 2008. The cluster is heavily obscured and has an apparent magnitude of 12.8. Sagittarius, the centaur, is the ninth sign in the Zodiac and represents those born between Nov. 22 and Dec. 21. It is one of the nearest globular star clusters to Earth. NGC 6565 is a planetary nebula, a cloud of gas expelled by a central star in its final stages, located about 14,000 light years away in Sagittarius. At the time, Sag DEG was the nearest known neighbouring galaxy of the Milky Way. The several star forming regions that make up W31 are located at different distances, but appear together in the sky because they lie in the same line of sight when observed from Earth. M22 was originally discovered by the German amateur astronomer Johann Abraham Ihle in 1665. Sagittarius is a masculine sign and ruled by Jupiter, and is balanced and complemented by the opposite sign of Gemini, ruled by Mercury. The Sagittarius Dwarf Irregular Galaxy contains mainly intermediate-age stars as a result of a prolonged period of star formation. Because the stars in globular clusters are ancient, their metallic abundances are much lower than more recently formed stars, such as the Sun. The Upsilon Sagittarii system is about 1,672 light years distant and has an orbital period of 137.939 days. Sagittarius belongs to the Zodiac family of constellations, along with Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Capricornus, Aquarius and Pisces. Image: European Space Agency, A. Riera (Universitat Politecnica de Catalunya, Spain) and P. Garcia-Lario (European Space Agency ISO Data Centre, Spain). Like several other stars in Sagittarius, Albaldah is near the ecliptic and can occasionally be occulted by the Moon and planets. Little Gem Nebula, image: Judy Schmidt (CC BY 2.0). The legions of stars in a globular cluster orbit about a shared centre of gravity. The clusters, Arches (upper right), Quintuplet (upper center), and the GC cluster (bottom center), contain massive stars that appear as very bright, point-like X-ray sources when winds from their surfaces collide with those from an orbiting companion.
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