139 Tauri

Star in the constellation Taurus Gemini constellation map.svg center 280 right Red circle.svg 10 139 Tauri 885 260 Location of 139 Tauri (circled in red) J2000 Taurus 05 57 59.65632 +25 57 14.0799 4.81 B1 Ib or B0.5 II −0.088 0.003 +8.0 4.2 −2.06 −1.95 2.10 0.19 −4.4 10.1 1.0 20.7 81,000 3.559 0.059 24660 1620 commas 140 22.5 2.6 139 Tau +25°1052 40111 28237 2084 77775 139+Tau 139 Tauri is a single, blue-white hued star in the zodiac constellation of Taurus. It is faintly visible to the naked eye with an apparent visual magnitude of 4.81. The distance to this star, as determined from an annual parallax shift of 2.10 0.19 mas, is roughly 1,600 light years. Because this star is located near the ecliptic, it is subject to occultations by the Moon. One such event was observed April 28, 1990. This is a massive B-type lower-luminosity supergiant or bright giant star with a stellar classification of B1 Ib or B0.5 II, respectively. It is around 22.5 million years old with a high rate of spin, showing a projected rotational velocity of 140 km/s. J. D. Rosendhal (1973) identified weak emission features associated with an asymmetric H-alpha absorption line, providing evidence of mass loss. The star has about 10 times the mass of the Sun and around 20 times the Sun's radius. It is radiating over 80,000 times the Sun's luminosity from its photosphere at an effective temperature of around 24,660 K. Stars such as this with 10 or more solar masses are expected to end their life by exploding as a Type II supernova. References 139 Tau 2018-03-30 Validation of the new Hipparcos reduction van Leeuwen F. . Astronomy and Astrophysics 474 2 653–664 2007 0708.1752 2007A&A...474..653V 10.1051/0004-6361:20078357 18759600 XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 1108.4971 119257644 . Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project Astronomy & Astrophysics De Bruijne J. H. J. Eilers A.-C. 546 A61 2012 10.1051/0004-6361/201219219 . 2012A&A...546A..61D 1208.3048 59451347 Stellar Rotation in Field and Cluster B Stars Huang W. Gies D. R. The Astrophysical Journal 683 2 1045–1051 August 2008 10.1086/590106 2008ApJ...683.1045H 0805.2133 18926523 . B. Cameron Reed New Estimates of the Solar-Neighborhood Massive-Stars Birthrate and the Galactic Supernova Rate The Astronomical Journal 130 4 June 28, 2005 1652–1657 10.1086/444474 astro-ph/0506708 2005AJ....130.1652R 119515135 . A survey of H-alpha emission in early-type high-luminosity stars Rosendhal J. D. Astrophysical Journal . 186 909 December 1973 10.1086/152555 1973ApJ...186..909R 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 . 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 September 2008 10.1111/j.1365-2966.2008.13596.x free 2008MNRAS.389..869E . 0806.2878 14878976 Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ1, D) parameters into Teff Astronomy and Astrophysics 1 Zorec J. Cidale L. Arias M. L. Frémat Y. Muratore M. F. Torres A. F. Martayan C. 501 297–320 2009 1 10.1051/0004-6361/200811147 2009A&A...501..297Z 0903.5134 14969137 1 Tetzlaff N. Neuhäuser R. Hohle M. M. A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun Monthly Notices of the Royal Astronomical Society 410 1 190–200 January 2011 10.1111/j.1365-2966.2010.17434.x free 2011MNRAS.410..190T 1007.4883 118629873 . The IACOB project. I. Rotational velocities in northern Galactic O- and early B-type stars revisited. The impact of other sources of line-broadening Simón-Díaz S. Herrero A. Astronomy & Astrophysics 562 A135 2014 2014A&A...562A.135S 10.1051/0004-6361/201322758 1311.3360 119278062 . 10.1086/158835 1981ApJ...245..593L Mass loss from O and B stars The Astrophysical Journal 245 593 1981 Lamers H. J. G. L. M free 10.1002/asna.200310081 2003AN....324..219W The total-to-selective extinction ratio determined from near IR photometry of OB stars Astronomische Nachrichten 324 3 219–237 2003 Wegner W Category:B-type bright giants Category:Emission-line stars Category:Taurus (constellation) BD+25 1052 Tauri, 139 040111 028237 2084