14 Trianguli

Star in the constellation Triangulum 14 Trianguli 280 Triangulum constellation map.svg center right Red circle.svg 8 14 Trianguli 337 268 Location of 14 Trianguli (circled) J2000.0 (ICRS) Triangulum 02 32 06.16977 +36 08 50.1813 5.140.01 K5 III +1.78 +1.47 −36.80.3 7.5319 0.1060 +45.066 +11.901 −0.46 14 Tri A 14 Tri B 6257 73 commas days 0.220.04 2448284 166 commas JD 4011 2.270.09 1.850.09 38.66 1.18 325 17 3,991 1.65 −0.16 2.11.2 14 Trianguli +35°233 +35°497 3032 15656 11784 736 55635 1070 14+Tri 14 Trianguli (14 Tri), also known as HD 15656, is a spectroscopic binary located in the northern constellation Triangulum. It has an apparent magnitude of 5.14, making it faintly visible to the naked eye in ideal conditions. Gaia DR3 parallax measurements place the system 433 light years away, and it is currently approaching the Solar System with a heliocentric radial velocity of −37 km/s. At its current distance, 14 Tri's brightness is diminished by 0.21 magnitude due to interstellar dust. It has an absolute magnitude of −0.46. The visible component is an evolved red giant with a stellar classification of K5 III. It has 1.85 times the mass of the Sun, but it has expanded to 39 times its girth. It radiates 325 times the luminosity of the Sun from its photosphere at an effective temperature of 3991 K commas, giving it an orangish-red hue. 14 Tri is slightly metal-deficient with [Fe/H] = −0.16, and spins modestly with a projected rotational velocity of 2.1 km/s. This is a single-lined spectroscopic binary that completes an eccentric orbit within 17 years. The secondary star has not been detected visually or in the spectrum and is expected to be a low-mass red dwarf or white dwarf. 14 Tri may be part of the Wolf 630 moving group. References 327523283893186048 Roman Nancy G. The Spectra of the Bright Stars of Types F5-K5. The Astrophysical Journal July 1952 116 122 0004-637X 1538-4357 10.1086/145598 1952ApJ...116..122R free Kervella Pierre Arenou Frédéric Thévenin Frédéric Stellar and substellar companions from Gaia EDR3 Astronomy & Astrophysics 21 December 2021 657 A7 0004-6361 1432-0746 10.1051/0004-6361/202142146 2022A&A...657A...7K 2109.10912 free van Belle Gerard T. von Braun Kaspar Ciardi David R. Pilyavsky Genady Buckingham Ryan S. Boden Andrew F. Clark Catherine A. Hartman Zachary van Belle Gerald Bucknew William Cole Gary 2021-12-01 Direct Measurements of Giant Star Effective Temperatures and Linear Radii: Calibration against Spectral Types and V - K Color 2021ApJ...922..163V The Astrophysical Journal 922 2 163 10.3847/1538-4357/ac1687 free 2107.09205 0004-637X 14 Trianguli's database entry at VizieR. de Medeiros J. R. Mayor M. A catalog of rotational and radial velocities for evolvedstars Astronomy and Astrophysics Supplement Series November 1999 139 3 433–460 0365-0138 1286-4846 10.1051/aas:1999401 1999A&AS..139..433D free McWilliam Andrew High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances The Astrophysical Journal Supplement Series December 1990 74 1075 0067-0049 1538-4365 10.1086/191527 1990ApJS...74.1075M free Eggleton P. P. Tokovinin A. A. A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 11 September 2008 389 2 869–879 0035-8711 1365-2966 10.1111/j.1365-2966.2008.13596.x 2008MNRAS.389..869E 0806.2878 14878976 free 1994Obs...114..167G Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli Griffin R. F. The Observatory 1994 114 167 Argue A. N. UBV Photometry of 550 F, G and K Type Stars Monthly Notices of the Royal Astronomical Society 1 September 1966 133 4 475–493 0035-8711 1365-2966 10.1093/mnras/133.4.475 1966MNRAS.133..475A free 2005A&A...430..165F Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters Astronomy and Astrophysics 430 165–186 Famaey B. Jorissen A. Luri X. Mayor M. Udry S. Dejonghe H. Turon C. January 2005 10.1051/0004-6361:20041272 astro-ph/0409579 0004-6361 1432-0746 17804304 free Høg E. Fabricius C. Makarov V. V. Urban S. Corbin T. Wycoff G. Bastian U. Schwekendiek P. Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars Astronomy and Astrophysics March 2000 355 L27–L30 2000A&A...355L..27H 0004-6361 Anderson E. Francis Ch. XHIP: An extended hipparcos compilation Astronomy Letters May 2012 38 5 331–346 1063-7737 1562-6873 10.1134/S1063773712050015 2012AstL...38..331A 1108.4971 119257644 Maas Z. G. Pilachowski C. A. Hinkle K. Chlorine Abundances in Cool Stars The Astronomical Journal 28 November 2016 152 6 196 1538-3881 10.3847/0004-6256/152/6/196 2016AJ....152..196M 1609.01626 free McDonald A. R. E. Hearnshaw J. B. The Wolf 630 moving group of stars Monthly Notices of the Royal Astronomical Society 1 October 1983 204 3 841–852 0035-8711 1365-2966 10.1093/mnras/204.3.841 1983MNRAS.204..841M free Gontcharov George A. Mosenkov Aleksandr V. Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars Monthly Notices of the Royal Astronomical Society 28 September 2017 472 4 3805–3820 0035-8711 1365-2966 10.1093/mnras/stx2219 2017MNRAS.472.3805G 1709.01160 free *14 Tri February 8, 2023 Further reading Griffin R.F. Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli. The Observatory August 1994 114 167–171 1994Obs...114..167G Category:K5III stars Category:Triangulum Trianguli, 14 015656 011784 0736 BD+35 00497