[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/qz-puppis-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/qz-puppis-wikipedia\/","headline":"QZ Puppis – Wikipedia","name":"QZ Puppis – Wikipedia","description":"From Wikipedia, the free encyclopedia Star in the constellation Puppis QZ Puppis Location of QZ Puppis (circled) Observation dataEpoch J2000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox","datePublished":"2017-05-08","dateModified":"2017-05-08","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/ba\/Puppis_constellation_map.svg\/280px-Puppis_constellation_map.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/ba\/Puppis_constellation_map.svg\/280px-Puppis_constellation_map.svg.png","height":"373","width":"280"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/qz-puppis-wikipedia\/","wordCount":4671,"articleBody":"From Wikipedia, the free encyclopediaStar in the constellation PuppisQZ PuppisLocation of QZ Puppis (circled)Observation dataEpoch J2000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox J2000ConstellationPuppisRight ascension07h 52m 38.64663s[1]Declination\u221238\u00b0\u00a051\u2032\u00a046.1305\u2033[1]Apparent\u00a0magnitude\u00a0(V)4.47 – 4.54[2]CharacteristicsSpectral\u00a0typeB2.5V[3]U\u2212B color index\u22120.68[4]B\u2212V color index-0.20[4]Variable\u00a0typeellipsoidal[2]AstrometryRadial velocity (Rv)+29.50[5]\u00a0km\/sProper motion (\u03bc) RA:\u00a0\u22128.92[1]\u00a0mas\/yr Dec.:\u00a0+3.34[1]\u00a0mas\/yr Parallax (\u03c0)5.03\u00a0\u00b1\u00a00.19\u00a0mas[1]Distance650 \u00b1 20\u00a0ly (199 \u00b1 8\u00a0pc)Absolute\u00a0magnitude\u00a0(MV)\u22122.00[6]DetailsMass6.0[7]\u00a0M\u2609Radius7.3[7]\u00a0R\u2609Luminosity2,268[7]\u00a0L\u2609Surface gravity (log\u00a0g)3.5[7]\u00a0cgsTemperature15,254[7]\u00a0KMetallicity [Fe\/H]\u22120.15[8]\u00a0dexRotational velocity (v\u00a0sin\u00a0i)151[9]\u00a0km\/sAge24.1[10]\u00a0MyrOther designations b Puppis, QZ Pup, CD\u221238\u00b03769, GC\u00a010661, GSC\u00a007646-03591, HIP\u00a038455, HR\u00a03084, HD\u00a064503, NSV\u00a03789, SAO\u00a0198545 Database referencesSIMBADdataQZ Puppis (QZ Pup, b Pup) is a class B2.5V (blue main-sequence) star in the constellation Puppis. Its apparent magnitude is 4.5 and it is approximately 650 light years away based on parallax.  QZ Puppis was identified as a small-amplitude variable star in 1974, but the nature of the variability was unclear.  It was thought to be a spectroscopic binary on the basis of variability in the radial velocity of its spectral lines.[12]  As a hot B-class main sequence star with variable spectral lines, it was suspected of being a \u03b2 Cephei variable but this classification was repeatedly rejected.[13]  The short-period sinusoidal variations in brightness with an amplitude of 0.03 magnitudes were interpreted as ellipsoidal variations as the star, distorted by a close companion, rotates with a period of 1.1 days.[12]  Later analysis of Hipparcos photometry detected shallow eclipses.[14]The companion to QZ Puppis is only known from its effect on the visible star as they orbit.  The primary shows radial velocity variations of 71\u00a0km\/s as it orbits every 1.112 days.References[edit]^ a b c d e Van Leeuwen, F. (2007). “Validation of the new Hipparcos reduction”. Astronomy and Astrophysics. 474 (2): 653\u2013664. arXiv:0708.1752. Bibcode:2007A&A…474..653V. doi:10.1051\/0004-6361:20078357. S2CID\u00a018759600. Vizier catalog entry^ a b Samus, N. N.; Durlevich, O. V.;  et\u00a0al. (2009). “VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)”. VizieR On-line Data Catalog: B\/GCVS. Originally Published in: 2009yCat….102025S. 1. Bibcode:2009yCat….1.2025S.^ Hoffleit, D.; Warren, W. H. (1995). “VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)”. VizieR On-line Data Catalog: V\/50. Originally Published in: 1964BS….C……0H. 5050. Bibcode:1995yCat.5050….0H.^ a b Mermilliod, J. C. (2006). “VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)”. VizieR On-line Data Catalog: II\/168. Originally Published in: Institut d’Astronomie. 2168. Bibcode:2006yCat.2168….0M.Vizier catalog entry^ Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; R\u00f6ser, S.; Schilbach, E. (2007). “Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of \u223c55000 stars and mean radial velocities of 516 Galactic open clusters and associations”. Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN….328..889K. doi:10.1002\/asna.200710776. S2CID\u00a0119323941.^ Anderson, E.; Francis, Ch. (2012). “XHIP: An extended hipparcos compilation”. Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL…38..331A. doi:10.1134\/S1063773712050015. S2CID\u00a0119257644. Vizier catalog entry^ a b c d e Vallenari, A.;  et\u00a0al. (Gaia Collaboration) (2022). “Gaia Data Release 3. Summary of the content and survey properties”. Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051\/0004-6361\/202243940. Gaia DR3 record for this source at VizieR.^ Anders, F.;  et\u00a0al. (August 2019). “Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18″. Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A…628A..94A. doi:10.1051\/0004-6361\/201935765. eISSN\u00a01432-0746. ISSN\u00a00004-6361.^ Glebocki, R.; Gnacinski, P. (2005). “VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)”. VizieR On-line Data Catalog: III\/244. Originally Published in: 2005csss…13..571G; 2005yCat.3244….0G. 3244. Bibcode:2005yCat.3244….0G.^ Tetzlaff, N.; Neuh\u00e4user, R.; Hohle, M. M. (2011). “A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun”. Monthly Notices of the Royal Astronomical Society. 410 (1): 190\u2013200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111\/j.1365-2966.2010.17434.x. S2CID\u00a0118629873. Vizier catalog entry^ “MAST: Barbara A. Mikulski Archive for Space Telescopes”. Space Telescope Science Institute. Retrieved 8 December 2021.^ a b Haefner, R.; Drechsel, H. (1986). “Further evidence for the binary nature of HR 3084”. Astrophysics and Space Science. 121 (2): 205. Bibcode:1986Ap&SS.121..205H. doi:10.1007\/BF00653693. S2CID\u00a0120352239.^ Telting, J. H.;  et\u00a0al. (June 2006). “A high-resolution spectroscopy survey of \u03b2 Cephei pulsations in bright stars”. Astronomy and Astrophysics. 452 (3): 945\u2013953. Bibcode:2006A&A…452..945T. doi:10.1051\/0004-6361:20054730.^ “QZ Pup”. International Variable Star Index. AAVSO. Retrieved 2022-10-16.  "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/qz-puppis-wikipedia\/#breadcrumbitem","name":"QZ Puppis – Wikipedia"}}]}]