18 Tauri

Star in the constellation Taurus 18 Tauri M45 Pleiades Stromar.jpg M45 Pleiades Stromar 280 Image of the Pleiades star cluster center Red circle.svg 12 740 465 18 Tauri in the Pleiades, circled in red J2000 Taurus 03 45 09.74013 +24 50 21.3432 5.66 main sequence B8 V −0.064 0.012 +4.8 0.8 +20.218 −46.124 7.2222 0.0551 0.19 3.34 0.06 2.89 160 18 15 13748 223 commas 4.126 0.113 212 204 18 Tau +24°546 23324 17527 1144 76137 4485 18+Tau 18 Tauri is a single star in the zodiac constellation of Taurus, located 452 light years away from the Sun. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 5.66. The star is moving further from the Earth with a heliocentric radial velocity of +4.8 km/s. It is a member of the Pleiades open cluster, which is positioned near the ecliptic and thus is subject to lunar occultations. This is a B-type main-sequence star with a stellar classification of B8 V, and is about halfway through its main sequence lifetime. It displays an infrared excess, suggesting the presence of an orbiting debris disk with a black body temperature of 75 K at a separation of 137.8 AU from the host star. The star has 3.34 times the mass of the Sun and 2.89 times the Sun's radius. It is radiating 160 times the Sun's luminosity from its photosphere at an effective temperature of 13,748 K. 18 Tauri has a high rate of spin, showing a projected rotational velocity of 212 km/s. References 69812945346809600 18 Tau 2019-03-20 David Trevor J. Hillenbrand Lynne A. The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal 804 2 146 2015 2015ApJ...804..146D 10.1088/0004-637X/804/2/146 1501.03154 33401607 . Zorec J. Royer F. Rotational velocities of A-type stars. IV. Evolution of rotational velocities Astronomy & Astrophysics 537 A120 2012 2012A&A...537A.120Z 1201.2052 10.1051/0004-6361/201117691 55586789 . A Comprehensive Census of Nearby Infrared Excess Stars Cotten Tara H. Song Inseok The Astrophysical Journal Supplement Series 225 1 15 24 July 2016 10.3847/0067-0049/225/1/15 . 2016ApJS..225...15C 1606.01134 118438871 free Eggleton P. P. Tokovinin A. A. A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869–879 2008 0806.2878 2008MNRAS.389..869E 10.1111/j.1365-2966.2008.13596.x free 14878976 1 Meyer C. Rabbia Y. Froeschle M. Helmer G. Amieux G. Observations of lunar occultations at Observatoire de la Cote d'Azur Astronomy and Astrophysics Supplement 110 107 1995 1995A&AS..110..107M . See SAO 76137 on p. 112 . XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 1108.4971 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 119257644 Gontcharov G. A. Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system Astronomy Letters 32 11 759–771 November 2006 10.1134/S1063773706110065 2006AstL...32..759G 1606.08053 119231169 . Spectral Classification Morgan W. W. Keenan P. C. Annual Review of Astronomy and Astrophysics 11 29 1973 . 10.1146/annurev.aa.11.090173.000333 1973ARA&A..11...29M The Pleiades and alpha Persei Clusters Eggen Olin J. The Astronomical Journal 116 4 1810–1815 October 1998 10.1086/300533 1998AJ....116.1810E free Category:B8V stars Category:Pleiades Category:Taurus (constellation) Category:Durchmusterung objects Tauri, 018 023324 017527 1144