This star has more than three times the mass of the Sun and is about 330 million years old.[6] The spectrum of this star matches a stellar classification of G8 II-III,[3] with the luminosity class notation 'II-III' indicating it shows some traits of both a giant star and a bright giant. At this evolutionary stage, the atmosphere has expanded to almost thirteen times the radius of the Sun and the outer envelope has an effective temperature of 5,196 K.[6] X-ray emission has been detected from this star, with an estimated luminosity of 3 × 1029 erg s−1.[12]
In Chinese, caused by adaptation of the European southern hemisphere constellations into the Chinese system, 夾白 (Jiá Bái), means White Patches Attached, and it refers to an asterism consisting of α Reticuli and θ Doradus. Consequently, α Reticuli itself is known as 夾白二 (Jiá Bái èr, English: the Second Star of White Patches Attached.)[13]
Referencesedit
^ abcdefvan Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600
^ abcdGutierrez-Moreno, Adelina; et al. (1966), "A System of photometric standards", Publications of the Department of Astronomy University of Chile, 1, Publicaciones Universidad de Chile, Department de Astronomy: 1–17, Bibcode:1966PDAUC...1....1G
^ abHouk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1975mcts.book.....H
^HR 1336, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 4, 2008.
^Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick (eds.), "The Revision of the General Catalogue of Radial Velocities", Determination of Radial Velocities and Their Applications, Proceedings from IAU Symposium No. 30, 30, University of Toronto: International Astronomical Union: 57, Bibcode:1967IAUS...30...57E
^ abcdefghida Silva, L.; et al. (November 2006), "Basic physical parameters of a selected sample of evolved stars", Astronomy and Astrophysics, 458 (2): 609–623, arXiv:astro-ph/0608160, Bibcode:2006A&A...458..609D, doi:10.1051/0004-6361:20065105, S2CID 9341088
^ abcdAlpha Ret 2008-12-04 at the Wayback Machine, Jim Kaler, Stars. Accessed on line September 4, 2008.
^Schröder, C.; Reiners, Ansgar; Schmitt, Jürgen H. M. M. (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo" (PDF), Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377[permanent dead link]
^* alf Ret -- Star in double system, database entry, SIMBAD. Accessed on line September 4, 2008.
^Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976
^Micela, G.; Favata, F.; Sciortino, S. (October 1997), "HIPPARCOS distances of X-ray selected stars: implications on their nature as stellar population", Astronomy and Astrophysics, 326: 221–227, Bibcode:1997A&A...326..221M
^(in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 27 日
May 08, 2024
alpha, reticuli, latinized, from, reticuli, bayer, designation, brightest, star, southern, circumpolar, constellation, reticulum, with, apparent, visual, magnitude, this, appears, solitary, star, located, distance, light, years, from, earth, although, bright, . Alpha Reticuli Latinized from a Reticuli is the Bayer designation of the brightest star in the southern circumpolar constellation of Reticulum 7 with an apparent visual magnitude of 3 3 2 This appears to be a solitary star 11 located at a distance of 162 light years from Earth 1 Although it is bright enough to be seen with the naked eye the declination of this star means that it is best viewed from the southern hemisphere and is only readily visible south of the Tropic of Cancer 7 Alpha ReticuliLocation of a Reticuli circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation Reticulum Right ascension 04h 14m 25 48414s 1 Declination 62 28 25 8917 1 Apparent magnitude V 3 315 2 Characteristics Spectral type G8 II III 3 U B color index 0 63 4 B V color index 0 922 2 R I color index 0 659 2 AstrometryRadial velocity Rv 35 5 5 km sProper motion m RA 41 97 1 mas yr Dec 49 42 1 mas yrParallax p 20 18 0 10 mas 1 Distance161 6 0 8 ly 49 6 0 2 pc Absolute magnitude MV 0 17 0 05 6 DetailsMass3 11 0 06 6 M Radius12 8 0 6 6 R Luminosity240 7 L Surface gravity log g 2 69 0 04 6 cgsTemperature5 196 6 KMetallicity Fe H 0 07 6 dexRotational velocity v sin i 5 7 8 km sAge0 33 0 02 6 Gyr Other designationsa Ret Alpha Ret CPD 62 332 FK5 156 GC 5164 HD 27256 HIP 19780 HR 1336 SAO 248969 PPM 353975 CCDM J04144 6228 WDS 04144 6228A 9 10 Database referencesSIMBADdata This star has more than three times the mass of the Sun and is about 330 million years old 6 The spectrum of this star matches a stellar classification of G8 II III 3 with the luminosity class notation II III indicating it shows some traits of both a giant star and a bright giant At this evolutionary stage the atmosphere has expanded to almost thirteen times the radius of the Sun and the outer envelope has an effective temperature of 5 196 K 6 X ray emission has been detected from this star with an estimated luminosity of 3 1029 erg s 1 12 Alpha Reticuli has a 12th magnitude visual companion CCDM J04144 6228B at an angular separation of 48 arcseconds away along a position angle of 355 10 Since the two stars share a common proper motion across the celestial sphere it is possible that Alpha Reticuli rather than being solitary may instead be the primary component of a binary star system with an orbital period of at least 60 000 years 7 Naming editIn Chinese caused by adaptation of the European southern hemisphere constellations into the Chinese system 夾白 Jia Bai means White Patches Attached and it refers to an asterism consisting of a Reticuli and 8 Doradus Consequently a Reticuli itself is known as 夾白二 Jia Bai er English the Second Star of White Patches Attached 13 References edit a b c d e f van Leeuwen F November 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 a b c d Gutierrez Moreno Adelina et al 1966 A System of photometric standards Publications of the Department of Astronomy University of Chile 1 Publicaciones Universidad de Chile Department de Astronomy 1 17 Bibcode 1966PDAUC 1 1G a b Houk Nancy 1978 Michigan catalogue of two dimensional spectral types for the HD stars vol 1 Ann Arbor Dept of Astronomy University of Michigan Bibcode 1975mcts book H HR 1336 database entry The Bright Star Catalogue 5th Revised Ed Preliminary Version D Hoffleit and W H Warren Jr CDS ID V 50 Accessed on line September 4 2008 Evans D S June 20 24 1966 Batten Alan Henry Heard John Frederick eds The Revision of the General Catalogue of Radial Velocities Determination of Radial Velocities and Their Applications Proceedings from IAU Symposium No 30 30 University of Toronto International Astronomical Union 57 Bibcode 1967IAUS 30 57E a b c d e f g h i da Silva L et al November 2006 Basic physical parameters of a selected sample of evolved stars Astronomy and Astrophysics 458 2 609 623 arXiv astro ph 0608160 Bibcode 2006A amp A 458 609D doi 10 1051 0004 6361 20065105 S2CID 9341088 a b c d Alpha Ret Archived 2008 12 04 at the Wayback Machine Jim Kaler Stars Accessed on line September 4 2008 Schroder C Reiners Ansgar Schmitt Jurgen H M M January 2009 Ca II HK emission in rapidly rotating stars Evidence for an onset of the solar type dynamo PDF Astronomy and Astrophysics 493 3 1099 1107 Bibcode 2009A amp A 493 1099S doi 10 1051 0004 6361 200810377 permanent dead link alf Ret Star in double system database entry SIMBAD Accessed on line September 4 2008 a b Entry 04144 6228 The Washington Double Star Catalog Archived 2008 04 12 at the Wayback Machine United States Naval Observatory Accessed on line September 4 2008 Eggleton P P Tokovinin A A September 2008 A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869 879 arXiv 0806 2878 Bibcode 2008MNRAS 389 869E doi 10 1111 j 1365 2966 2008 13596 x S2CID 14878976 Micela G Favata F Sciortino S October 1997 HIPPARCOS distances of X ray selected stars implications on their nature as stellar population Astronomy and Astrophysics 326 221 227 Bibcode 1997A amp A 326 221M in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 7 月 27 日 Retrieved from https en wikipedia org w index php title Alpha Reticuli amp oldid 1171243616, wikipedia, wiki, book, books, library,
