Based on the spectral type (B5III SB) of the star, the star's colour is blue . When in doubt about a bright star, consult Jim Kaler's website. Mirfak . The Alpha Persei open cluster (Melotte 20) is one of the nearby clusters (d <500 pc) for which a long-term systematic radial-velocity monitoring of the solar-type stars has not been published so far. Alpha Persei - Star Facts - Online Star Register alpha Aurigae (G5III) iota Persei (G0V) tau Cetii (G8V) epsilon Geminorum (G8Ib) K: Neutral metal lines strengthen, and Balmer hydrogen lines weaken in a continuation of the trends seen in Type G stars; the G band of the CH molecule peaks at K2 and then weakens. 1, 2019, below have all appeared as a Star of the Week on . The Alpha Persei Cluster (also known as Melotte 20 or Collinder 39) is an open cluster in the constellation of Perseus.. To the naked eye, the cluster has several blue spectral type B type stars. Stars - University of Illinois Urbana-Champaign You can see alpha Persei, Mirfak, with the second magnitude in the center of this picture. The system's orbit is the site of a planetary system that includes the world of Typerias. The star Pi Cephei, classified as… Read More It is the second brightest star in the constellation, after Mirfak, Alpha Persei. The following resources can be found on this planet. Also known as Melotte 20 or Collinder 39, the Alpha Persei Cluster is an open cluster of stars in the constellation Perseus. But in the past there had been some debate over its status as a . Context: The Alpha Persei open cluster (Melotte 20) is one of the nearby clusters (d < 500 pc) for which a long-term systematic radial-velocity monitoring of the solar-type stars has not been published so far. Observations Data were acquired at the 120 cm telescope of Observa-toire de Haute-Provence using a Tek 512 CCD providing a square eld of view of 6.5 arcmin. Alpha Persei - Wikipedia tiếng Việt It lies at an approximate distance of 90 light years from Earth and has an apparent magnitude that varies between 2.12 and . It is the most luminous star in the constellation Perseus, but with an apparent visual magnitude of +1.8 it just barely outshines Algol, the best-known star in the constellation, and one . STARS and STARS OF THE WEEK Star Count: 950 Created by Jim Kaler, Prof. It gets its name from the fact that the star Alpha Persei is the brightest member. Atik (Menkhib) - ζ Persei (Zeta Persei) Zeta Persei is the third brightest star in the constellation. Ginanklinn Inshi is a planet in No Man's Sky. Our Sun is an example of a G-type star, but it is in fact white, since all the colors it emits are blended together. Mirfak. All the first magnitude stars, and most of the second magnitude visible from classical lands, have names (an outstanding exception being Gamma Cassiopeiae), but from there on the naming is erratic.Gamma Persei (though actually fifth brightest in Perseus)carries no known western name even . Other bright members of the cluster include Delta, Epsilon, and Psi Persei. This binary consists of a type G yellow star and another type A blue-white star in the constellation of Perseus, located 256 light-years from Earth, at coordinates 4.38S 4.01E. Built in Arkhangel'sk in 1922, it had a displacement of 550 tons. THE STARS 2.1. Alpha Persei Cluster. The observations Opposite Algol, on the southwestern edge, is 20 Persei, also known as Struve 318: 5.0, 9.7; 237 , 14.2". stars, we have recently formed a loosely organized group of observers to monitor several slowly and rapidly rotating stars in the Pleiades, a Persei, the Hyades, and the field. 128 J. Bouvier: UBVRIphotometric monitoring of 7 rapidly rotating late-type dwarfs in the Alpha Persei cluster 2. But in the past there had been some debate over its status as a . Mirfak is a supergiant F-type star, similar to Procyon A, and its spectrum has served as one of the anchor points by which other stars are classified since 1943. For reference, the full moon is 30' (arc minutes) or 0.5° in size. The star is also known as Gorgona, Gorgonea Prima, Demon Star and El Ghoul. As a baby, he and his mother were put in a chest and cast into the sea by Acrisius, Danae's father. There are also giant K-type stars, which range from hypergiants like RW Cephei, to giants and supergiants, such as Arcturus, whereas orange dwarfs, like Alpha Centauri B, are main-sequence stars. Let's begin our binocular tour with a look a the "Demon Star" - Beta Persei - the "B" symbol on our map. 2. Looking for Alpha Persei? Els membres brillants també inclouen Delta, Sigma, Psi . Here is the list of stars, arranged by size. That brilliance makes it easy to spot even though it's more than 500 light-years away. So most of the B-type stars we can see in . Alpha Persei has 7.3 solar masses and is about 60 times the size of the Sun. mv : 1.80; spectral type: F5 Ib; distance: 190 pc. The most luminous member is the ~2nd magnitude white-yellow supergiant Mirfak, also known as Alpha Persei.Bright members also include Delta, Sigma, Psi, 29, 30, 34 and 48 Persei. Alpha Persei Cluster is magnitude 1.20 *, and is 5° 30 in size. Alpha Persei lies in the midst of a cluster of stars named as the eponymous Alpha Persei Cluster, or Melotte 20, which is easily visible in binoculars and includes many of the fainter stars in the constellation. It is a supergiant star that may well host an exoplanet much more massive than Jupiter. Once Mirfak is located, move opposite to the Pole Star (due south) ten degrees: binoculars. Cataloged by Hodierna before 1654. in late-type Alpha Persei stars E. L. Martín 1,2, A. Magazzù 3,R.J.GarcíaLópez1,S.Randich4, and D. Barrado y Navascués 5 1 Instituto de Astrofísica de Canarias, 38200 La Laguna, Spain e-mail: ege@iac.es 2 University of Central Florida, Department of Physics, PO Box 162385, Orlando, FL 32816-2385, USA e-mail: ege@physics.ucf.edu These kinds of stars are so energetic, they don't live long. Mirfak is a supergiant F-type star, similar to Procyon A, and its spectrum has served as one of the anchor points by which other stars are classified since 1943. This moving cluster was probably first cataloged as a nebulous object by Hodierna. Alpha Persei Cluster (Melotte 20, Collinder 39) The Alpha Persei Cluster is an open star cluster in Perseus. It contains several blue stars, the brightest one of which is Mirfak, Alpha Persei, a white-yellow second magnitude giant. Here's what Kaler has to say about Alpha Persei, a.k.a. Introducing Sapien: Alpha Persei . (1975 . They make up about 12% of the main-sequence stars in the solar neighborhood. The most luminous member is the ~2nd magnitude white-yellow supergiant Mirfak, also known as Alpha Persei.Bright members also include Delta, Sigma, Psi, 29, 30, 34, and 48 Persei. A stellar phenomenon in the Alpha Quadrant, on the edge of explored space. Ginanklinn Inshi is a planet in the star system Alpha Persei =CIAT= on the PS4 version of No Man's Sky universe. Pronunciation: Beta Persei is a triple star system consisting of Beta Persei Aa1, a hot blue-white main sequence star of the spectral type B8V, Beta Persei Aa2, a cooler orange subgiant with the stellar classification K0IV, and Beta Persei Ab, a white star of the spectral type A7m. K-type stars are orangish stars that are slightly cooler than the Sun. Key Facts & Summary. Alpha Persei (được Latinh hóa từ α Persei, viết tắt là Alpha Per, α Per), được đặt tên chính thức là Mirfak (phát âm là /ˈmɜːrfæk/ hay /ˈmɪərfæk/), là ngôi sao sáng nhất trong chòm sao Anh Tiên nằm ở phía bắc, nó vượt xa ngôi sao nổi tiếng nhất của chòm sao, Algol.Alpha Persei có độ lớn cấp sao biểu kiến là 1,8 và . Aims.We undertook an observing program in 1982 to study the membership, duplicity, and rotation of the main-sequence stars and The naming of stars at times seems to have little to do with their brightnesses. Mirfak / Alpha Persei Facts (Type, Distance, Magnitude, Colour, Luminosity, Location & more) (PER-see-us) The Northern constellation of Perseus, the Hero (son of Zeus), is best viewed in Winter during the month of December.It's brightest star is Mirfak at magnitude 1.79.The boundary of the Perseus constellation contains 7 stars that host known exoplanets. A few of the stars have previously-published light curves, making it possible to study the long-term variability of the light-curve shapes. Alpha Persei — also known as Mirfak — is the dominant member of the cluster. In star: Classification of spectral types. Alpha Centauri is a gravitationally bound system of the closest stars and exoplanets to our Solar System at 4.37 light-years (1.34 parsecs) from the Sun.The name is Latinized from α Centauri, and abbreviated Alpha Cen or α Cen.It is a triple star system, consisting of the three stars: α Centauri A (officially Rigil Kentaurus), α Centauri B (officially Toliman), and the closest star α . Mirfak (ook bekend as Alpha Persei of α Per) is die helderste ster in die noordelike sterrebeeld Perseus, ook helderder as die sterrebeeld se bekendste ster, Algol.Mirfak het 'n skynbare magnitude van 1,8 en is 'n sirkumpolêre ster by middenoordelike breedtegrade.. To the naked eye, the cluster consists of several blue spectral type B type stars. Mirfak, Alpha Persei (α Per) is a yellow supergiant star located in the constellation Perseus.With an apparent magnitude of 1.806, it is the brightest star in Perseus, outshining the more famous Algol, and the 33rd brightest star in the sky.It shares the 33rd place with Dubhe, Alpha Ursae Majoris.The two stars are slightly fainter than Alnair in the constellation Grus, Alnitak in Orion and . UV photometry of the Alpha Persei cluster obtained with the OAO 2 satellite is analyzed. This type of system is referred to as a double-lined spectroscopic binary (SB2)(J . The star's traditional names, Mirfak or Algenib, is Arabic for elbow. Phi Persei is; refers to an asterism consisting of 51 Andromedae, Gamma Andromedae, Phi Persei 49 Andromedae, Chi Andromedae, Upsilon Andromedae, Tau Andromedae, 56 The mid-F super-giant has been variously characterized as a weak Cepheid just blueward of the instability strip (Hatzes . Urstav is a planet in the star system Alpha Persei =CIAT= on the PS4 version of No Man's Sky universe. The brightest members include Delta, Epsilon, Psi, 29, 30 . Properties. Mirfak or Alpha Persei (Alp Per) is the brightest naked eye star in the constellation Perseus.With an apparent magnitude of 1.79, Mirfak is the 35th brightest star in the entire sky (see: 50 Brightest Stars ).Its absolute magnitude is -4.5 and its distance is 592 light years.The Equinox J2000 equatorial coordinates are RA = 03h 24m 19.4s, Dec = +49° 51' 40". Delta Persei is a main star of the constellation outline. Mirfak, designated as Alpha Persei, is the brightest star in the constellation of Perseus, and around the 35 th brightest star in the night sky, with an apparent magnitude of 1.806. AG Persei is another Algol variable in Perseus, whose primary component is a B - type main sequence star with an apparent magnitude of 6.69. A remote creamy-yellow supergiant that is the brightest star in the constellation Perseus. Stellar open clusters are groups of stars that formed at the same time from a single cloud in the interstellar medium. These data allow us to accurately determine the Alpha Persei single-star lithium depletion boundary at M(IC ) = 11.47, M(Bol) = 11.42, (R-I)C0 = 2.12, spectral type M6.0. In some cases, the spectral lines of both stars in the system are visible to the observer and the spectrograph will show spectral lines from both stars. Mirfak (Alpha Persei) is a yellow supergiant located about 510 light years away in the constellation of Perseus that is about sixty times bigger than our sun. The Ib suffix means that it is a moderately luminous supergiant. These types are designated, in order of decreasing temperature, by the letters O, B, A, F, G, K, and M. It was described as stellar group by Eddington 1910, and cataloged by Melotte 1915. These include the classical runaways 53 Arietis (Ori OB1), xi Persei (Per OB2), and lambda Cephei (Cep OB3), and fifteen new identifications, amongst which a pair of stars running away in opposite directions from the region . Care was taken to center every AP star so as to maximize the number of eld . Values of v sin i are estimated on the recalibrated system of Slettebak et al. Alpha Persei is a young stellar open cluster in our Galaxy. Also designated as Melotte 20 (Mel 20), it's now generally accepted as a true open cluster. The most luminous member is the ~2nd magnitude white-yellow supergiant Mirfak, also known as Alpha Persei. different face of the star than might have been anticipated from the coronal properties. STARS presents a comprehensive suite of pages that tell the stories of stars and their constellations.The stars listed prior to January. Persei the first Soviet expeditionary ship, a two-masted wooden schooner designed for navigation through ice. Science of Alpha Persei At a distance of about 600 light-years , Mirfak lies much farther than the Big Dipper stars, so this star has to be intrinsically very luminous to shine so brightly in our sky. star - star - Classification of spectral types: Most stars are grouped into a small number of spectral types. An oracle had told Acrisiusa that a son of Danae would one day kill him. Location of α Persei (circled) Observation data Epoch J2000 Equinox J2000; Constellation: Perseus: Right ascension: 03 h 24 m 19.37009 s: Declination +49° 51′ 40.2455″ Apparent magnitude (V): 1.806: Characteristics Light curves of the very low-mass member of the alpha Persei open cluster, AP J0323+4853, obtained during two different observing runs in 1994 and 1995, display a starspot rotational modulation of period ~7.6h. It is . G-type stars are often mistakenly referred to as yellow dwarf stars. The components are sometimes referred to as Beta Persei A, B, and C. (From Wiki) The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster in the constellation of Perseus. It gets its name from the fact that the star Alpha Persei is the brightest member. The following article is from The Great Soviet Encyclopedia (1979). The Northern constellation of Perseus, the Hero (son of Zeus), is best viewed in Winter during the month of December. Explanation of Alpha Persei These kinds of stars are so energetic, they don't live long. Aims: We undertook an observing program in 1982 to study the membership, duplicity, and rotation of the main-sequence stars and to compare the results with those of the other nearby . The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. This loose type of open cluster is also called an OB-Association since the clustered stars are mainly of the young, massive, and hot spectral types O and B. It might be outdated or ideologically biased. Zeta Persei is a blue-white supergiant star belonging to the spectral class B1 Ib. We report here the periods and light curves obtained dur-ing 1991 for ten stars; seven a Per members, two Pleiades stars, and one naked Τ Tauri field star. Gamma Persei (also known as 23 Persei) is a star system, a binary star in the space of the galaxy's Alpha Quadrant. Light curves and period estimates were obtained for several Pleiades and Alpha Persei cluster K dwarfs which were identified as rapid rotators in earlier spectroscopic studies. Alpha Persei Cluster: open star cluster. It contains several blue stars, the brightest one of which is Mirfak, Alpha Persei, a white-yellow second magnitude giant. * One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions. These include every type, from neutron stars to the largest hypergiants. Alpha Persei (α Per) is the brightest star in the constellation of Perseus, It also bears the traditional names of Mirfak or Algenib. Alpha Persei Alpha Persei is the optically brightest member of the young (∼50 Myr) open cluster bearing its name. THE STARS 2.1. The general cause of the photometric variability observed for these stars is an . GAMMA PER (Gamma Persei). Alpha Persei is the brightest star in the Perseus constellation, named after one of the greatest ancient Greek mythological heroes, known for beheading Medusa, saving the princess Andromeda, and slaying the sea monster Cetus. To the naked eye, it consists of several stars of spectral type B, along with the most massive member - the F5 supergiant Alpha Persei. lació de Perseus. The Alpha Persei (PER-see-EYE) Cluster is an open cluster of hot, bluish-white B-type stars. The fact that Alpha Persei is a supergiant, and a member of the cluster, proves that the cluster must be extremely young, since supergiants burn out in less than 100 million years. A l'ull nu, el grup consisteix en diversos estels del tipus espectral blau B estrelles de tipus. The Alpha Persei (PER-see-EYE) Cluster is an open cluster of hot, bluish-white B-type stars. The brightest star of Perseus, Algenib or Alpha Persei, is seen at upper right and gives the cluster its name. Star system. At least 21 of the 56 runaway stars in our sample can be linked to the nearby associations and young open clusters. Also designated as Melotte 20 (Mel 20), it's now generally accepted as a true open cluster. Star Characteristics and Features. Recently, in order to extend the UV observations to younger stars in nearby clusters, I have obtained low resolution Mg II spectra for a number of K dwarfs in the Alpha Persei and Pleiades . Alpha Persei can be observed with the unaided eye and lies between the Pleiades Cluster and the North Star (Polaris). Algol, Beta Persei, is a bright multiple star located in Perseus. Mirfak is a solitary star located at around 510 light-years away from our Solar System. Recently, in order to extend the UV observations to younger stars in nearby clusters, I have obtained low resolution Mg II spectra for a number of K dwarfs in the Alpha Persei and Pleiades clusters, both of which have nuclear ages under . Mirfak, designated as Alpha Persei, is the brightest star in the constellation of Perseus, and around the 35 th brightest star in the night sky, with an apparent magnitude of 1.806. Other bright members of the cluster include Delta, Epsilon, and Psi Persei. The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster of stars in the northern constellation of Perseus.To the naked eye, the cluster consists of several blue-hued spectral type B stars. Alpha Persei (Latinized from α Persei, abbreviated Alpha Per, α Per), formally named Mirfak (pronounced / ˈ m ɜːr f æ k / or / ˈ m ɪər f æ k /), is the brightest star in the northern constellation of Perseus, outshining the constellation's best-known star, Algol.Alpha Persei has an apparent visual magnitude of 1.8, and is a circumpolar star when viewed from mid-northern latitudes. Cluster's well defined ages allow astronomers to calibrate stellar evolution models with measurements of constituent members, and track the history of star formation in the Milky Way. A ROSAT survey of the Alpha Per open cluster in 1993 detected its brightest star, the mid-F supergiant α Persei: the X-ray luminosity and spectral hardness were similar to coronally active late-type dwarf members. By reference to theoretical evolutionary models, this converts fairly directly into an age for the Alpha Persei cluster of 90 ± 10 Myr. Emeritus of Astronomy, University of Illinois Scroll down for previous stars, Places to Go, and the complete stellar archive. View Alpha Persei in 3D! Andromeda's three brightest stars - Alpheraz, Mirach, and Almaak - plus Alpha Persei (Mirfak) form an arc which connects to the Great Square of Pegasus to form a gigantic dipper which has . Algol is quickly found by first locating Mirfak (alpha Persei). Find out information about Alpha Persei. Examples of yellow dwarf stars include Alpha Centauri A, Tau Ceti, 51 Pegasi. Urstav is a planet in No Man's Sky. The Alpha Persei Association is a group of relatively bright stars that is moving through space together. Request PDF | On the potassium-rotation connection in late-type Alpha Persei stars | We present measurements of the \ion{K}{i} $\lambda 7699$ line from spectra of 19 late-type members of the . Alpha Persei is a supergiant star that is evolving into the last stages of its existence. Beta Persei (RA 03 08 10 Dec +40 57 20) and it is the most famous of all . With a most likely mass of 0.09 Msolar, close to the substellar limit, AP J0323+4853 is the lowest mass star so far for which a photometric Mirfak, designated as Alpha Persei, is the brightest star in the northern constellation of Perseus. Alpha Persei has an apparent visual magnitude of 1.8, and is a circumpolar star when viewed from mid-northern latitudes. Mirfak (Alpha Persei) is a yellow supergiant located about 510 light years away in the constellation of Perseus that is about sixty times bigger than our sun.It is the most luminous star in the constellation Perseus, but with an apparent visual magnitude of +1.. Mirfak - α Persei (Alpha Persei) Alpha Persei is a supergiant star belonging to the spectral class F5 Ib. Alpha Persei Alpha Persei is the optically brightest member of the young (∼50 Myr) open cluster bearing its name. Their chest came ashore on the island of Seriphos, where they were found by a fisherman named Dictys. And you might notice that many bright stars are getting together around alpha Persei with binoculars, actually those stars form an open cluster, has been given a number of Mel.20, the cluster is spread about three degrees. It was equipped for comprehensive oceanographic research and . IUE observations of solar-type stars in the field show a decline in chromospheric and transition region emission with age for stars older than about 100 Myr. This release of Sapien's tokenized social platform is named after this star in . Alpha Persei Cluster is a open star cluster located in the constellation Perseus . PSR J0348+0432 A | Neutron Star PSR B1257+12 | Neutron Star Crab Pulsar | Neutron Star Geminga | Neutron Star XTE J1739-285 | Neutron Star Vela Pulsar | Neutron Star Black Widow Pulsar | Neutron Star PSR J1748-2446ad | Neutron Star PSR B1937+21 | Neutron Star GRW +70 8247 . 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