15 Leonis Minoris
Star in the constellation Ursa Major
15 Leonis Minoris is the Flamsteed designation for a single[ 13] star in the northern circumpolar constellation of Ursa Major . It has an apparent visual magnitude of 5.08,[ 3] making it a fifth magnitude star that is visible to the naked eye. Based on parallax measurements, it is located at a distance of 61.7 light years from the Sun . The star has been examined for an infrared excess , but none was detected.[ 14]
This star has a stellar classification of G0 IV-V[ 4] with an age of about 9.3 billion years,[ 11] which suggests that it is an older G-type main sequence star that may be evolving into a subgiant as the hydrogen at its core runs out. The estimated mass of the star is 15% greater than the Sun's mass ,[ 8] and it is larger in girth than the Sun by +52%.[ 9] It is spinning with a projected rotational velocity of 4 km/s.[ 10] The star is radiating almost three[ 2] times the luminosity of the Sun from its photosphere at an effective temperature of 5,859 K,[ 4] giving it the yellow-hued glow of a G-type star .[ 15]
References
^ Hoffleit, D. (1979), "Discordances in Star Designations", Bulletin d'Information du Centre de Données Stellaires , 17 : 38, Bibcode :1979BICDS..17...38H .
^ a b c d e f g Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties" . Astronomy & Astrophysics . 616 . A1. arXiv :1804.09365 . Bibcode :2018A&A...616A...1G . doi :10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR .
^ a b c 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 119257644 .
^ a b c d e f Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal , 132 (1): 161–170, arXiv :astro-ph/0603770 , Bibcode :2006AJ....132..161G , doi :10.1086/504637 , S2CID 119476992 .
^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", SIMBAD Astronomical Database , Bibcode :1986EgUBV........0M .
^ Nidever, David L.; et al. (August 2002), "Radial Velocities for 889 Late-Type Stars", The Astrophysical Journal Supplement Series , 141 (2): 503–522, arXiv :astro-ph/0112477 , Bibcode :2002ApJS..141..503N , doi :10.1086/340570 , S2CID 51814894 .
^ Luck, R. Earle; Heiter, Ulrike (2006), "Dwarfs in the Local Region", The Astronomical Journal , 131 (6): 3069–3092, Bibcode :2006AJ....131.3069L , doi :10.1086/504080 .
^ a b Ramírez, I.; et al. (September 2012), "Lithium Abundances in nearby FGK Dwarf and Subgiant Stars: Internal Destruction, Galactic Chemical Evolution, and Exoplanets", The Astrophysical Journal , 756 (1): 46, arXiv :1207.0499 , Bibcode :2012ApJ...756...46R , doi :10.1088/0004-637X/756/1/46 , S2CID 119199829 .
^ a b Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007), "Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog", The Astrophysical Journal Supplement Series , 168 (2): 297, arXiv :astro-ph/0607235 , Bibcode :2007ApJS..168..297T , doi :10.1086/509763 , S2CID 18775378 .
^ a b Martínez-Arnáiz, R.; et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter" (PDF) , Astronomy and Astrophysics , 520 : A79, arXiv :1002.4391 , Bibcode :2010A&A...520A..79M , doi :10.1051/0004-6361/200913725 , S2CID 43455849 , archived from the original (PDF) on 2017-09-22, retrieved 2018-11-04 .
^ a b Ballering, Nicholas P.; et al. (September 2013), "A Trend between Cold Debris Disk Temperature and Stellar Type: Implications for the Formation and Evolution of Wide-orbit Planets", The Astrophysical Journal , 775 (1): 14, arXiv :1308.2223 , Bibcode :2013ApJ...775...55B , doi :10.1088/0004-637X/775/1/55 , S2CID 119113700 , 55.
^ "* 15 LMi" , SIMBAD , Centre de données astronomiques de Strasbourg , retrieved 2016-07-19 .
^ 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 .
^ Moro-Martín, A.; et al. (March 2015), "Does the Presence of Planets Affect the Frequency and Properties of Extrasolar Kuiper Belts? Results from the Herschel Debris and Dunes Surveys", The Astrophysical Journal , 801 (2): 28, arXiv :1501.03813 , Bibcode :2015ApJ...801..143M , doi :10.1088/0004-637X/801/2/143 , S2CID 55170390 , 143.
^ "The Colour of Stars" , Australia Telescope, Outreach and Education , Commonwealth Scientific and Industrial Research Organisation , December 21, 2004, archived from the original on March 18, 2012, retrieved 2016-07-25 .