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14 Trianguli

October 28, 2023

14 Trianguli (14 Tri), also known as HD 15656, is a spectroscopic binary[16] located in the northern constellation Triangulum. It has an apparent magnitude of 5.14,[2] making it faintly visible to the naked eye in ideal conditions. Gaia DR3 parallax measurements place the system 433 light years away,[1] and it is currently approaching the Solar System with a heliocentric radial velocity of −37 km/s.[5] At its current distance, 14 Tri's brightness is diminished by 0.21 magnitude due to interstellar dust.[17] It has an absolute magnitude of −0.46.[6]

14 Trianguli
Location of 14 Trianguli (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 02h 32m 06.16977s[1]
Declination +36° 08′ 50.1813″[1]
Apparent magnitude (V) 5.14±0.01[2]
Characteristics
Spectral type K5 III[3]
U−B color index +1.78[4]
B−V color index +1.47[4]
Astrometry
Radial velocity (Rv)−36.8±0.3[5] km/s
Proper motion (μ) RA: +45.066 mas/yr[1]
Dec.: +11.901 mas/yr[1]
Parallax (π)7.5319 ± 0.1060 mas[1]
Distance433 ± 6 ly
(133 ± 2 pc)
Absolute magnitude (MV)−0.46[6]
Orbit[7]
Primary14 Tri A
Companion14 Tri B
Period (P)6,257±73 d
Eccentricity (e)0.22±0.04
Periastron epoch (T)2,448,284±166 JD
Argument of periastron (ω)
(secondary)		40±11°
Semi-amplitude (K1)
(primary)		2.27±0.09 km/s
Details
Mass1.85±0.09[8] M☉
Radius40.5±2.1[9] R☉
Luminosity373±11[10] L☉
Surface gravity (log g)1.65[11] cgs
Temperature3,957[12] K
Metallicity [Fe/H]−0.16[13] dex
Rotational velocity (v sin i)2.1±1.2[14] km/s
Other designations
14 Trianguli, AG+35°233, BD+35°497, FK5 1070, GC 3032, HD 15656, HIP 11784, HR 736, SAO 55635[15]
Database references
SIMBADdata

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,[8] but it has expanded to 40.5 times its girth.[9] It radiates 373 times the luminosity of the Sun[10] from its photosphere at an effective temperature of 3,957 K,[12] giving it an orangish-red hue. 14 Tri is slightly metal-deficient with [Fe/H] = −0.16,[13] and spins modestly with a projected rotational velocity of 2.1 km/s.[14] 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.[7] 14 Tri may be part of the Wolf 630 moving group.[18]

References edit

  1. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. ^ Roman, Nancy G. (July 1952). "The Spectra of the Bright Stars of Types F5-K5". The Astrophysical Journal. 116: 122. Bibcode:1952ApJ...116..122R. doi:10.1086/145598. eISSN 1538-4357. ISSN 0004-637X.
  4. ^ a b Argue, A. N. (1 September 1966). "UBV Photometry of 550 F, G and K Type Stars". Monthly Notices of the Royal Astronomical Society. 133 (4): 475–493. Bibcode:1966MNRAS.133..475A. doi:10.1093/mnras/133.4.475. eISSN 1365-2966. ISSN 0035-8711.
  5. ^ a b Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. eISSN 1432-0746. ISSN 0004-6361. S2CID 17804304.
  6. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  7. ^ a b Griffin, R. F. (1994). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli". The Observatory. 114: 167. Bibcode:1994Obs...114..167G.
  8. ^ a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (21 December 2021). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  9. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361.
  10. ^ a b 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.
  11. ^ Maas, Z. G.; Pilachowski, C. A.; Hinkle, K. (28 November 2016). "Chlorine Abundances in Cool Stars". The Astronomical Journal. 152 (6): 196. arXiv:1609.01626. Bibcode:2016AJ....152..196M. doi:10.3847/0004-6256/152/6/196. eISSN 1538-3881.
  12. ^ a b di Benedetto, G. P. (November 1998). "Towards a fundamental calibration of stellar parameters of A, F, G, K dwarfs and giants". Astronomy and Astrophysics. 339: 858–871. Bibcode:1998A&A...339..858D. ISSN 0004-6361.
  13. ^ a b McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". The Astrophysical Journal Supplement Series. 74: 1075. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527. eISSN 1538-4365. ISSN 0067-0049.
  14. ^ a b de Medeiros, J. R.; Mayor, M. (November 1999). "A catalog of rotational and radial velocities for evolvedstars". Astronomy and Astrophysics Supplement Series. 139 (3): 433–460. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. eISSN 1286-4846. ISSN 0365-0138.
  15. ^ "*14 Tri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved February 8, 2023.
  16. ^ Eggleton, P. P.; Tokovinin, A. A. (11 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. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.
  17. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711.
  18. ^ McDonald, A. R. E.; Hearnshaw, J. B. (1 October 1983). "The Wolf 630 moving group of stars". Monthly Notices of the Royal Astronomical Society. 204 (3): 841–852. Bibcode:1983MNRAS.204..841M. doi:10.1093/mnras/204.3.841. eISSN 1365-2966. ISSN 0035-8711.

Further reading edit

  • Griffin, R.F. (August 1994). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli". The Observatory. 114: 167–171. Bibcode:1994Obs...114..167G.

October 28, 2023
trianguli, also, known, 15656, spectroscopic, binary, located, northern, constellation, triangulum, apparent, magnitude, making, faintly, visible, naked, ideal, conditions, gaia, parallax, measurements, place, system, light, years, away, currently, approaching. 14 Trianguli 14 Tri also known as HD 15656 is a spectroscopic binary 16 located in the northern constellation Triangulum It has an apparent magnitude of 5 14 2 making it faintly visible to the naked eye in ideal conditions Gaia DR3 parallax measurements place the system 433 light years away 1 and it is currently approaching the Solar System with a heliocentric radial velocity of 37 km s 5 At its current distance 14 Tri s brightness is diminished by 0 21 magnitude due to interstellar dust 17 It has an absolute magnitude of 0 46 6 14 TrianguliLocation of 14 Trianguli circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation TriangulumRight ascension 02h 32m 06 16977s 1 Declination 36 08 50 1813 1 Apparent magnitude V 5 14 0 01 2 CharacteristicsSpectral type K5 III 3 U B color index 1 78 4 B V color index 1 47 4 AstrometryRadial velocity Rv 36 8 0 3 5 km sProper motion m RA 45 066 mas yr 1 Dec 11 901 mas yr 1 Parallax p 7 5319 0 1060 mas 1 Distance433 6 ly 133 2 pc Absolute magnitude MV 0 46 6 Orbit 7 Primary14 Tri ACompanion14 Tri BPeriod P 6 257 73 dEccentricity e 0 22 0 04Periastron epoch T 2 448 284 166 JDArgument of periastron w secondary 40 11 Semi amplitude K1 primary 2 27 0 09 km sDetailsMass1 85 0 09 8 M Radius40 5 2 1 9 R Luminosity373 11 10 L Surface gravity log g 1 65 11 cgsTemperature3 957 12 KMetallicity Fe H 0 16 13 dexRotational velocity v sin i 2 1 1 2 14 km sOther designations14 Trianguli AG 35 233 BD 35 497 FK5 1070 GC 3032 HD 15656 HIP 11784 HR 736 SAO 55635 15 Database referencesSIMBADdataThe visible component is an evolved red giant with a stellar classification of K5 III It has 1 85 times the mass of the Sun 8 but it has expanded to 40 5 times its girth 9 It radiates 373 times the luminosity of the Sun 10 from its photosphere at an effective temperature of 3 957 K 12 giving it an orangish red hue 14 Tri is slightly metal deficient with Fe H 0 16 13 and spins modestly with a projected rotational velocity of 2 1 km s 14 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 7 14 Tri may be part of the Wolf 630 moving group 18 References edit a b c d e Vallenari A et al Gaia collaboration 2023 Gaia Data Release 3 Summary of the content and survey properties Astronomy and Astrophysics 674 A1 arXiv 2208 00211 Bibcode 2023A amp A 674A 1G doi 10 1051 0004 6361 202243940 S2CID 244398875 Gaia DR3 record for this source at VizieR a b Hog E Fabricius C Makarov V V Urban S Corbin T Wycoff G Bastian U Schwekendiek P Wicenec A March 2000 The Tycho 2 catalogue of the 2 5 million brightest stars Astronomy and Astrophysics 355 L27 L30 Bibcode 2000A amp A 355L 27H ISSN 0004 6361 Roman Nancy G July 1952 The Spectra of the Bright Stars of Types F5 K5 The Astrophysical Journal 116 122 Bibcode 1952ApJ 116 122R doi 10 1086 145598 eISSN 1538 4357 ISSN 0004 637X a b Argue A N 1 September 1966 UBV Photometry of 550 F G and K Type Stars Monthly Notices of the Royal Astronomical Society 133 4 475 493 Bibcode 1966MNRAS 133 475A doi 10 1093 mnras 133 4 475 eISSN 1365 2966 ISSN 0035 8711 a b Famaey B Jorissen A Luri X Mayor M Udry S Dejonghe H Turon C January 2005 Local kinematics of K and M giants from CORAVEL Hipparcos Tycho 2 data Revisiting the concept of superclusters Astronomy and Astrophysics 430 165 186 arXiv astro ph 0409579 Bibcode 2005A amp A 430 165F doi 10 1051 0004 6361 20041272 eISSN 1432 0746 ISSN 0004 6361 S2CID 17804304 a b Anderson E Francis Ch May 2012 XHIP An extended hipparcos compilation Astronomy Letters 38 5 331 346 arXiv 1108 4971 Bibcode 2012AstL 38 331A doi 10 1134 S1063773712050015 eISSN 1562 6873 ISSN 1063 7737 S2CID 119257644 a b Griffin R F 1994 Spectroscopic binary orbits from photoelectric radial velocities Paper 117 14 Trianguli The Observatory 114 167 Bibcode 1994Obs 114 167G a b Kervella Pierre Arenou Frederic Thevenin Frederic 21 December 2021 Stellar and substellar companions from Gaia EDR3 Astronomy amp Astrophysics 657 A7 arXiv 2109 10912 Bibcode 2022A amp A 657A 7K doi 10 1051 0004 6361 202142146 eISSN 1432 0746 ISSN 0004 6361 a b Kervella P Thevenin F Di Folco E Segransan D October 2004 The angular sizes of dwarf stars and subgiants Astronomy amp Astrophysics 426 1 297 307 arXiv astro ph 0404180 Bibcode 2004A amp A 426 297K doi 10 1051 0004 6361 20035930 eISSN 1432 0746 ISSN 0004 6361 a b Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR Maas Z G Pilachowski C A Hinkle K 28 November 2016 Chlorine Abundances in Cool Stars The Astronomical Journal 152 6 196 arXiv 1609 01626 Bibcode 2016AJ 152 196M doi 10 3847 0004 6256 152 6 196 eISSN 1538 3881 a b di Benedetto G P November 1998 Towards a fundamental calibration of stellar parameters of A F G K dwarfs and giants Astronomy and Astrophysics 339 858 871 Bibcode 1998A amp A 339 858D ISSN 0004 6361 a b McWilliam Andrew December 1990 High resolution spectroscopic survey of 671 GK giants I Stellar atmosphere parameters and abundances The Astrophysical Journal Supplement Series 74 1075 Bibcode 1990ApJS 74 1075M doi 10 1086 191527 eISSN 1538 4365 ISSN 0067 0049 a b de Medeiros J R Mayor M November 1999 A catalog of rotational and radial velocities for evolvedstars Astronomy and Astrophysics Supplement Series 139 3 433 460 Bibcode 1999A amp AS 139 433D doi 10 1051 aas 1999401 eISSN 1286 4846 ISSN 0365 0138 14 Tri SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved February 8 2023 Eggleton P P Tokovinin A A 11 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 eISSN 1365 2966 ISSN 0035 8711 S2CID 14878976 Gontcharov George A Mosenkov Aleksandr V 28 September 2017 Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars Monthly Notices of the Royal Astronomical Society 472 4 3805 3820 arXiv 1709 01160 Bibcode 2017MNRAS 472 3805G doi 10 1093 mnras stx2219 eISSN 1365 2966 ISSN 0035 8711 McDonald A R E Hearnshaw J B 1 October 1983 The Wolf 630 moving group of stars Monthly Notices of the Royal Astronomical Society 204 3 841 852 Bibcode 1983MNRAS 204 841M doi 10 1093 mnras 204 3 841 eISSN 1365 2966 ISSN 0035 8711 Further reading editGriffin R F August 1994 Spectroscopic binary orbits from photoelectric radial velocities Paper 117 14 Trianguli The Observatory 114 167 171 Bibcode 1994Obs 114 167G Retrieved from https en wikipedia org w index php title 14 Trianguli amp oldid 1154746240, wikipedia, wiki, book, books, library,

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