CorvusIt is one of the constellations in the southern sky.be locatedVirgosouthwest,Grand DuchessAndhydraIs composed of four third-order starsquadrilateral。Corvus quadrilateralZhen SuyiandAlgorab Two stars pointing far awayVirgoThe southwest of Antares 1.2nd century ADancient GreekThe astronomer Ptolemy has listed this small constellation in his "The Grand Theory".There are few bright stars in Corvus, and the image of crow is not obvious.The four brightest third class stars in the constellation form a small irregular quadrilateral, in which gamma and gamma stars are pointing towards VirgoCornucopia。fromursa majorOfBeidouThe curve that the spoon handle extends goes througharcturus、Cornucopia, and finally stop at the small quadrilateral. This arc is called“Spring big curve”。
Able to observe all constellationslatitudeRange: 65 ° N to 90 ° S
Corvus
Corvus is located in the southern sky.Its name isLatinIt means "crow".Corvus representsMYTHOSinApolloholybirds。It was first catalogued by the Greek astronomer Ptolemy in the second century.crowGalaxyDoes not contain many bright stars anddeep space But it is a pair of very famous interacting galaxies——Tentacle galaxyThe location of the galaxy.Corvus is the 70th largest constellation, with an area of 184Square degree。It is located in the southern hemispherethird quadrant (sq3), which can be seen at the latitude between+60 ° and - 90 °.
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Center position
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NGC4038 and NGC4039 galaxies in Corvus
Right ascension 12:20,Declination- 18 degrees atVirgosouthwest.There are 4 Class 3 stars and 2 Class 4 stars in the constellation.γ. ε, δ and β（Zhen SuyiFour stars form onequadrilateral"Zhen Su".The connection of γ and δ stars points to alpha virgo（Cornucopia）。Central position: 12:20 right ascension, - 18 declination.It's southwest of Virgo.There are 4 Class 3 stars and 2 Class 4 stars in the constellation.γ. The four stars ε, δ and β (Zhen Zhu I, II, III, IV) form a quadrangle, namely "Zhen Zhu".The connection of γ and δ stars points to Alpha Virgo (Kazuchi).
Zhen SuyiIt is the brightest star in the constellation Corvus.Its purposeApparent magnitudeIt is 2.59, about 165 light years away from the earth.It is suspected to be a double star. Its traditional name is Gienah, which is similar toTianjin IX(now called Aljanah) share, from Arabical-janāħ al-ghirāb al-yaman, which means "the right wing of crows".Its spectral type is B8III.[2]
Zhen Suer
Zhen SuerIt is a K2III star with an apparent magnitude of 3.02.It is about 303 light-years from the earth.The traditional name of this star Minkar comes from Arabicalmánxar, which means "the nostrils of crows".[2]
Algorab
Algorab Also known as Algorab, it is the A0 type (spectral) star in the constellation Corvussolar systemAbout 87 light-years.The apparent magnitude is 3.1.The traditional name of this star comes from Arabical-ghuraab, which means "crow".[2]
Kraz
Kraz It is a yellow white G type bright giant star, 140 light-years away from the Earth.The vision of this starthe magnitudeBetween 2.60 and 2.66.Shinzo is the second brightest star in the constellation Corvus.Its proper name Kraz was given to it in modern times, but the origin of this name is still uncertain.Shinzo is 160 times brighter than the sun.[2]
Right Jurisdiction
Right JurisdictionAlpha Corvus is the fifth brightest star in the constellation.The apparent magnitude is 4.02.The right jurisdiction is only 48.2 light years away from the earth.It is better thansunlightFour times brighter.The traditional name of this star comes from Arabical hibaa, which means "tent". It has another suspected double star.[2]
Left jurisdiction
Left jurisdiction, that is, η in Corvus, the sixth brightest star in Corvus, is aMain sequence star, belongs to the spectral type F2V, which is slightly larger and younger than the sun.Its apparent magnitude is 4.31, about 59.4 light-years away from the Earth.Crow η andLyraThe brightest star inVegaSimilar, because it has aDust pan。In fact, it has two.This star releases too muchinfrared, which is obviously more than that usually observed in similar celestial bodies.[2]
Raven VV
Raven VV is a compactKonductra, two stars revolve around each other, with a period of 1.46 days.The system is about 280 light-years from Earth.This binary star has a thirdcompanionIt was discovered in the past ten years.[2]
Tentacle galaxy
Tentacle galaxy(NGC 4038/NGC 4039）It's a famous pairInteractionThe galaxy of.British astronomer born in Germany in 1785William Herschel They were discovered for the first time.Galaxy collisionCurrently inStarburstStage: This areaStar formationThe speed of activity is abnormally high.The tentacle galaxy belongs to NGC 4038Galaxy clusterThis is a galaxy group composed of 13 to 27 members, distributed in the Corvus constellation andInteracting galaxyConstellations.They have two long tails, composed of stars ejected by the interaction of gas, dust and the main body.The apparent magnitude of the tentacle galaxy is 11.2/11.1, 45 million light-years away from the Earth.In recent years, two galaxies have been observedSupernova: SN 2004gt and SN 2007sr.[2]
NGC 4027
NGC 4027(Arp 22) is a crowBarred spiral galaxy。Its apparent magnitude is 11.7, about 83 million light-years away from the solar system.This galaxy is very special: one of themSwivel armThis may be the result of collision with another galaxy in the past.[2]
NGC 4361
NGC 4361 is a hugePlanetary nebula。Its shape is similar to that of dimElliptical galaxy。The nebula is about 50 light-years in diameter and is surrounded by a 13th magnitude star.[2]
Constellation myth
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myth
Major constellations in the spring sky[3]
Apollo married Kulunis, the beautiful queen of the kingdom of Dessalia, as his wifeHelios, the god of music, the god of prophecy, and the god of medicine;So he was very busy and had no time to accompany his beloved wife and son.So when Apollo could not stay beside Kulunis, he gave a silver feather crow who could speak to people a mission, which was to convey Kulunis' situation toApollo。
Once the crow was late for work because of laziness, which made Apollo, who wanted to know the situation of Kulunis early, impatient and angry.In order to find an excuse, the crow told a lie. He said that because Kulunis had an affair, he was worried about whether he should report it and was late.
Apollos was angry and rushed to Koulunis. When he found a suspicious figure, he immediately shot the arrow. Unexpectedly, it was Koulunis. Poor Koulunis died.Apollo, who knew the truth of the matter, angrily took away the crow's ability to speak, turned its silver feathers into black, and then set it on the dark sky, which is the shining crow in the spring night.
Of course, the appearance of the black crow is invisible in the dark night sky, and the stars forming the constellation Corvus are some silver nails that fix the crow in the sky.
Zhensu Four Stars
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Kraz Xinghe's right and left jurisdiction belong to the constellation of Raven. The "Western Step Sky Song": "The four pearls of Zhensu are not square, and Changsha is hidden in the middle of a dark place",ChangshaIt is a fifth class star, also known as Zeta Corvus.
28 constellations
The constellations are also called seven stars《Book of Rites · Monthly Order》Say:“Meng ChunThe moon is in the middle of the seven stars.Shiji Tianguan Book: "Seven Stars, Neck, Officer, Chief of Urgent Affairs", Shiji Suoyin: "Neck,Scarlet Bird— guardian spirit of the southNeck also.Officer, throat.Things are in your throat and will stay soon. My lord is in a hurry. "ConstellationsLocated in the heart of the snake, the brightest one isXingxiu ISerpentine is a second-class star.《Bu Tiange》"The seven stars are like a hook willow, which is in the shape of seventeen shafts", indicating the relative position of the stars.Xuanyuan here is a famous star cluster, which is called Leo in the west,Xuanyuan XIVIt's alpha Leo.
《Literary Expositor》"The bird opens its crop". The note says: "The crop is where the bird eats."chiriko It takes meaning from the red bird.The Law Book of Historical Records has another meaning: "Zhang says that everything is Zhang." Zhang Su's six stars are like open bows and arrows. They are small stars of the fourth and fifth order, of which the brighter one isZhang Suer(Serpentine λ).Wings are also taken from Zhuniao. In Records of the Historian, Tianguan Book: "Wings arethe shaft of a feather”。
On the lacquer cover of the tomb of Marquis Yi of Zeng, a writing cart was written in the Records of the Historian: "Zhen is a cart"《expound sth. obscure》"The four stars of Zhen are in the middle, and there are two more stars governing the left and right. They are like chariots."《Shuo Wen》"Zhen is also the crossbar behind the car", which refers to a small iron bar inserted on the axle to keep the wheels from falling off.Liu, formerly known as 咮, 咮 isbeakThis is similar to the meaning that the horn is a dragon horn.《Erya Shitian》"咮咮咮咮咮咮咮咮咮咮咮咮21678,Quail fireAlso, note: "Quail, bird name; fire belongs to the south".Willow Eight stars, curved in shape, like a bird's beak, also likeWeeping willow，《Bu Tiange》: "The willow eight stars, the curved head is as heavy as the willow".Liu, Xing and Zhang Sansu all belong tohydraLiu Su is located at the head of the snake. The brightest one isLiu Suliu(Zeta Hydra), a third class star.
