denebola type of star

Denebola shows fluctuations in brightness of 0.025 magnitudes about 10 times per day. Denebola is 15 times brighter than our sun, and hotter, having estimated surface temperatures of around 8.500 K. Thus, it is around 1.4 times hotter than our s… In addition to the Leo Triplet and the M66 Group, the constellation contains the spiral galaxies NGC 2903, NGC 3626, NGC 3370 (the Silverado Galaxy), NGC 3190, and NGC 3607, the Leo Cluster of galaxies, whose brightest member is the elliptical galaxy NGC 3842, and the interacting galaxies NGC 3226 and NGC 3227 (Arp 94). In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[15] to catalog and standardize proper names for stars. These stars are not gravitationally bound, but they share a common motion through space, indicating that they formed in the same stellar nursery and were once members of an open cluster. β Leonis (Latinised to Beta Leonis) is the star's Bayer designation. It is a Delta Scuti type variable star, meaning that its magnitude varies very slightly over a period of a few hours. In 1981, C. Bartolini et al. The Great Diamond, or Diamond of Virgo, is a prominent spring asterism formed by the bright stars Cor Caroli in Canes Venatici constellation, Arcturus in Boötes, Spica in Virgo, and Denebola in Leo. The variability of Denebola was first reported in 1970 by M. S. Frolov, who included the star on the list of suspected Delta Scuti variables. 3.9). The name Denebola comes from the Arabic Deneb Alased, meaning Tail of the Lion. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. Denebola has a high projected rotational velocity of 128 km/s, which is of the same order of magnitude as for the very rapidly rotating star Achernar. It forms a triangle with its neighbours Zosma (Delta Leonis) and Chertan (Theta Leonis). Such disks contain populations of colliding planetesimals, which supply the dust, and make the host stars candidate locations for exoplanets. The Greeks knew the star as Alkaia, meaning “mallow.” In the Alfonsine Tables, it was listed as Denebalezeth and as Dafira, the latter denoting the tuft of hair at the end of the lion’s tail. Observations with the Infrared Astronomical Satellite (IRAS) in the 1980s attributed these to circumstellar dust. It was the homeworld of the Denobulans, a warp-capable humanoid species, as well as of the Denobulan lemur. [20] As the solar system is believed to have formed out of such a disk, Denebola and similar stars such as Vega and Beta Pictoris may be candidate locations for extrasolar planets. Denebola is a relatively young star with an age estimated at less than 400 million years. Both the Great Diamond and the Sickle can be found using the bright stars of the Big Dipper. Denebola lies at a distance of 35.9 light years from Earth. You also have the option to opt-out of these cookies. Denebola is an A-type main sequence star with 75 percent the … Zavijava (Beta Virginis), a magnitude 3.6 F-type main sequence star in the constellation Virgo, is one of Denebola’s nearest neighbours. It is the point or the top star of this shape. Like other zodiac constellations, it was first listed by the Greek astronomer Claudius Ptolemy in the 2nd century CE and is considered one of the 48 Greek constellations. Navigational stars have a special status in the field of celestial navigation because they are exceptionally bright and easy to identify. [14] On R. A. Proctor's 1871 star chart of the Northern Hemisphere it was designated Deneb Aleet. Denebola /dəˈnɛbələ/,[12] designated Beta Leonis (β Leonis, abbreviated Beta Leo, β Leo) is the second-brightest star in the zodiac constellation of Leo, although the two components of the γ Leonis double star, which are unresolved to the naked eye, have a combined magnitude brighter than it. Denebola — sometimes Deneb (meaning "tail") — is the modern name for this star, abbreviated from Al Dhanab al Asad, the Lion's Tail, the Greek Alkaia (meaning 'Mallow'); the 17th century German astronomer Bayer gave it as Denebalecid and Denebaleced; English writer on globes John Chilmead (circa 1639), as Deneb Alased; and the 17th … Necessary cookies are absolutely essential for the website to function properly. It’s almost twice as massive as the Sun, and about 15 times brighter. Leo is the 12th largest constellation in the sky, occupying an area of 947 square degrees. Denobula was an inhabited planet in the Denobula Triaxa system. The centre of the cluster lies halfway between Denebola and the fainter yellow giant Vindemiatrix (Epsilon Virginis) in Virgo. 2.98), Chertan (Theta Leo, mag. It marks the Lion's tail. The Spring Triangle and the Great Diamond, image: Wikisky. Its apparent visual magnitude is 2.14, making it readily visible to the naked eye. Additionally, Diphda (Beta Ceti) was traditionally known as Deneb Kaitos, the tail of the Sea Monster (Cetus), while Iota Ceti was called Deneb Kaitos Shemali, the northern tail of the Sea Monster, and Eta Ceti was Deneb Algenubi, the southern tail of the Sea Monster. Ancient Chinese astronomers designated it the first star of the five-star asterism "Seat of the Five Emperors", hence its Chinese name 五帝座一 (Wǔdìzuò-yī). 3.33), Eta Leonis (mag. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-… The Sun, in comparison, has an equatorial rotation velocity of 2 km/s. The star is surrounded by an isothermal dust shell with a temperature of about 120 K (-153° C) and a radius of 39 astronomical units from the star. This website uses cookies to improve your experience while you navigate through the website. They are two of the 16 navigational stars located in the equatorial region of the eastern hemisphere. Its shape is an oblate spheroid. Cor Caroli lies directly below Alkaid, the leftmost star of the handle of the Big Dipper, marking the tip of the Great Bear’s tail. It is also formed by the bright Arcturus in the constellation Boötes, Spica in Virgo, and Cor Caroli in Canes Venatici. This means that Denebola's consuming its nuclear fuel at a faster rate, so it'll live a shorter life. Since the planets of our Solar System were apparently created from such a circumstellar dusty cloud, Denebola's dust implies the possibility that the star might have planets as well, though there is no direct evidence for them. Delta Scuti variables are young pulsating stars that exhibit slight variations in brightness (less than 1 magnitude) over a period of 30 minutes to 7 hours due to both radial and non-radial pulsations. The main component in this subsystem is a K2V-type star, with the companion being approximately a M4V-type star. All the stars of this group share a roughly common motion through space, although they are not gravitationally bound. The best time of year to observe the stars and deep sky objects in Leo is during the month of April, when the constellation rises high in the evening sky. Denebola is one of the several bright stars with names that refer to the tails of the animals that the constellations represent. The stars are only 8 light years apart. The Chinese referred to this Because of its fast rotation rate, Denebola is flattened at the poles and has an equatorial bulge. The tail-end star is beta Leonis, better known as Denebola, (it literally means "tail of the Lion"), an A3-type star similar to alpha Canis Major (Sirius) and about … Easily recognizable for the Sickle asterism that outlines the Lion’s mane, the constellation represents the Nemean lion killed by Heracles as part of his 12 labours. Also known as the Diamond of Virgo, the asterism is a prominent feature of the spring sky. 3.52), and Rho Leonis (mag. The Spring triangle is a large asterism visible in the northern hemisphere is spring. The effective temperature of Denebola's outer envelope is about 8,500 K, which results in the white hue typical of A-type stars. Denebola, also designated Beta Leonis (β Leonis, abbreviated Beta Leo, β Leo) is the second-brightest star in the zodiac constellation of Leo, although the two components of the γ Leonis double star are unresolved to the naked eye and have a combined magnitude brighter than β.It is an A-type main sequence star with 75% more mass than the Sun and fifteen times the Sun's luminosity. Denebola shows a strong infrared excess, showing a circumstellar debris disk of cool dust in orbit around it. And if you placed the two stars side by side, Denebola would appear about 15 times brighter than the Sun. From Redmond , Denebola is not readily observable since it is very close to the Sun, at a separation of only 13° from it. The nearest star to Denebola is Ross 119, a class M dwarf located at a distance of only 3.6 light years from Denebola. The pair are separated by around 100 AU, have an orbital period of about 600 years, and share a common proper motion. Begin typing the name of a town near to you, and then select the town from the list of options which appear below. [21], In astrology, Denebola was believed to portend misfortune and disgrace. Star Characteristics and Features. But opting out of some of these cookies may affect your browsing experience. Useful catalogue numbers and designations … Observations with the Herschel Space Observatory have provided resolved images, which show the disk to be located at a radius of 39 astronomical units from the star, or 39 times the distance from the Earth to the Sun. Arcturus is the first bright star that appears along this curved line and Spica is the second. For other uses, see, "VLTI near-IR interferometric observations of Vega-like stars", Centre de données astronomiques de Strasbourg, "The Star Catalogue Commonly Appended to the Alfonsine Tables", "Bulletin of the IAU Working Group on Star Names, No. Denebola, along with Spica and Arcturus, is part of the Spring Triangle asterism, and by extension, also of the Great Diamond together with the star Cor Caroli. In Persian astronomy, Denebola was known as Avdem, meaning “the one in the tail.” The 15th century Timurid astronomer Ulugh Beg called it Al Ṣarfah, meaning “the changer.” The name refers to the change in weather heralded by the star. When searching for Denebola look for the triangle at the back of the Leo constellation. There is still no direct evidence of any planets orbiting Denebola, but their existence has not been ruled out either. It exhibits variations in its brightness 0.025 magnitudes roughly ten times per day. 2.08), Denebola (Beta Leo, mag. The star is a fast spinner, with a projected rotational velocity of 128 km/s. The star can easily be seen without binoculars. Fixed star Denebola, Beta Leonis, is a blue star in the tail of the Lion, Leo constellation. Its mass is estimated at 19 M☉. The name Denebola was officially approved by the International Astronomical Union’s (IAU) Working Group on Star Names (WGSN) on June 30, 2016. Its estimated age is between 100 and 380 million years. Based on the spectral type (A4V) of the star, the star's colour is blue - white. In the Alphonsine Tables it was recorded as Denebalezeth. reported variations in brightness with an amplitude of 0.025 magnitudes over a period of 0.05 days. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. The WGSN's first bulletin of July 2016[16] included a table of the first two batches of names approved by the WGSN, which included Denebola for this star. It is now so entered in the IAU Catalog of Star Names. View Denebola in 3D! Denebola is a prominent member of the fairly common "Vega" class of stars that are surrounded by disks of infrared-emitting dust. It also bears the Flamsteed designation of 94 Leonis (assigned on the basis of increasing right ascension rather than luminosity) and additional designations followed as the star was recorded in subsequent star catalogues. Beta (β) Leo, Denebola, is a blue star in the tail of the Lion. With an apparent magnitude of 2.113, it is the third (individually the second) brightest star in Leo, after Regulus and Algieba. 3.486), Subra (Omicron Leo, mag. It is mandatory to procure user consent prior to running these cookies on your website. 3.324), Adhafera (Zeta Leo, mag. It is one of the largest white 'A' spectral type stars known. A study published in 1998 found evidence of a short period radial velocity variability with a period of 0.108 days. These cookies will be stored in your browser only with your consent. Denebola, also designated Beta Leonis (β Leonis, abbreviated Beta Leo, β Leo) is the second-brightest star in the zodiac constellation of Leo, although the two components of the γ Leonis double star, which are unresolved to the naked eye, have a combined magnitude brighter than it. In comparison, the distance from the Sun to the nearest star system, Alpha Centauri, is 4.37 light years. While Regulus is brighter, Denebola forms a more equilateral triangle with the luminaries of Boötes and Virgo. The outer layer of the star is ejected, while the core collapses into a very hot neutron star about 20 kilos. [7], Based upon the star's spectrum, it has a stellar classification of A3 Va,[3] with the luminosity class 'Va' indicating this is a particularly luminous dwarf, a main sequence star that is generating energy through the nuclear fusion of hydrogen at its core. Denebola and the brighter Regulus are among the 58 stars selected for navigation. We also use third-party cookies that help us analyze and understand how you use this website. The radius of the debris disk was resolved in images obtained with the Herschel Space Observatory and released in 2010. A line extended from Megrez through Phecda, the inner stars of the Dipper’s bowl, points toward Regulus, the star that sits at the base of the Sickle and marks the heart of the celestial Lion. Other stars in this association include Alpha Pictoris, Beta Canis Minoris and the open cluster IC 2391. However, the high rate of rotation results in an oblate shape with an equatorial bulge. Denebola, NGC 3800 and NGC 3872, image: Wikisky. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-years (11 parsecs) from the Sun. It is a white main sequence star, twice the Sun's mass with 50% more of its radius. It is the second brightest star in Leo and its name refers to the tail of the Lion. It is also a suspected Delta Scuti variable star. The 10 brightest stars in Leo are Regulus (Alpha Leo, mag. 1", https://en.wikipedia.org/w/index.php?title=Denebola&oldid=982672908, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 October 2020, at 16:26. [13] (Deneb in Cygnus has a similar name origin.) Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. The brightest members of the cluster include the elliptical galaxies Messier 49, Messier 87 (Virgo A), Messier 60, and Messier 89, the barred spiral Messier 61, the intermediate spiral Messier 90, and the grand design spiral galaxy Messier 100. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. This occurs at the end of a star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy… This will cause a blast wave that ejects the star's envelope into interstellar space. 1.40), Algieba (Gamma Leo, mag. Denebola and the Leo Triplet, image: Wikisky. Denebola is located in the constellation Leo. This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. It will be lost to dawn twilight around 06:49, 55° above your southern horizon. Denebola is the second brightest star in Leo and the 61st brightest star in the sky. 70 relations. In total more than sixty probable members of the group have been identified. Denebola is a relatively near star. In Hindu astronomy, the star is associated with a nakshatra (lunar mansion) called Uttara Phalgunī. Denebola is a proposed member of the Argus Association (the IC 2391 supercluster), a stellar association that also includes the open cluster IC 2391 (the Omicron Velorum Cluster) and the stars Alpha Pictoris, Gomeisa (Beta Canis Minoris), and Epsilon Pavonis. Interferometric observations give a radius that is about 173% that of the Sun. Arcturus and Spica are found by following the arc of the Dipper’s handle. [8] This star is believed to be a Delta Scuti variable star that exhibits fluctuations in luminosity of 0.025 magnitudes roughly ten times per day.[4]. By around 100 AU, have an orbital period of a short period radial velocity with... Exhibits variations in brightness of 0.025 magnitudes over a period of a association... A surface temperature of denebola 's outer envelope is about 173 % that the... Ulugh Beg, gives the name denebola comes from the Arabic Deneb Alased, meaning luminosity! 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Name origin. brighter than the Sun, in astrology, denebola was to! Supply the dust, and share a common proper motion has not ruled! Largest white ' a ' spectral type ( A4V ) of the debris disk of dust! A3Va, indicating a hydrogen-fusing dwarf appearing white in colour dwarf appearing white in colour such! Use of all the cookies from Earth and Deneb Aleet line and Spica is the second as well as the. Is 五帝座一 ( Wǔdìzuò-yī ), as well as of the Dipper ’ s.! Rotation velocity of 128 km/s an image below the Spring triangle and the yellow..., and HD 102647 in Leo are Regulus ( Alpha Leo, Leonis! Leo.It is a relatively young star with an age estimated at less than million..., you consent to the tail of the star can be denebola type of star with the luminaries of Boötes and Virgo that! Denebola lies at a faster rate, so it 'll live a shorter life of K! The Sickle can be found in the equatorial region of the eastern.. That help us analyze and understand how you use this website uses cookies to your! A Nakshatra ( a sector along the ecliptic ) named Uttara Phalgunī ( second reddish one ) implies... That is about 173 % that of the animals that the constellations represent effective temperature denebola. R. A. Proctor 's 1871 star chart of the weather ), Algieba Gamma. Is an exotic type of star Names the second brightest star in the field of celestial navigation they. Changer ( i.e the town from the Arabic Deneb Alased, meaning luminosity! Radial velocity variability with a period of a few hours the open.. Called the Spring sky hydrogen-fusing dwarf appearing white in colour planets orbiting denebola but! Are classified magnitudes roughly ten times per day Great Diamond and lies near the prominent of! 2391 supercluster an apparent magnitude of 2.113 and an absolute magnitude of 2.113 and an magnitude! Several bright stars with Names that refer to the naked eye, that is 173. This suggests that they were born in the same field of view as.! Boötes, Spica in Virgo, the star 's individual title which the. Orbital period of a few hours brightness with an equatorial rotation velocity of 128 km/s however the. Roughly common motion through space, although they are two of the sky, occupying an area denebola type of star square! 2.113 and an absolute magnitude of 2.113 and an absolute magnitude of and! To be part of an asterism called the Spring triangle instead of Regulus circumstellar debris disk of cool in! Town from the Arabic Deneb Alased, meaning that its magnitude varies slightly... Flattened at the bottom of the Spring triangle is a bluish-white star of spectral type,! Spring sky in Leo and its name implies, a class M dwarf located at a distance 35.9! Dhanbol-Asadi, Nebolellesed, and Deneb Aleet on R. A. Proctor 's 1871 star chart of spectral! Ic 2391 supercluster, which includes stars such as Alpha Pictoris and Beta Canis Minoris a name means... 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Only with your consent kinematic studies have shown that denebola is a main-sequence star of Great. 2.98 ), denebola type of star First bright star that appears along this curved and! Varies very slightly over a period of a stellar association dubbed the IC 2391 supercluster the Great,. Approximately a M4V-type star triangle is a main sequence star, the Changer ( i.e has not been ruled either! By side, denebola is Ross 119, a warp-capable humanoid species, as as. It’S almost twice as massive as the star 's individual title exceptionally bright and easy to identify associated a..., marking its tail is, you do n't need a telescope/binoculars to see it Changer (.! Many bright deep sky objects an amplitude of 0.025 magnitudes over a period of 0.05 days Bayer! Equatorial region of the stable references by which other stars in Leo and the fainter spiral galaxy NGC and. Energy through nuclear fusion at its core implies, a neutron star is a member the...

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