5 Tauri
In today's world, 5 Tauri has become increasingly relevant in different areas, from politics to science, including culture and society. Its impact is undeniable and its implications are varied and complex. In this article, we will delve into the universe of 5 Tauri, exploring its different facets and analyzing its influence in the current context. From its origin to its possible future evolutions, we will try to shed light on this diverse and multifaceted issue.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 30m 52.38296s[1] |
| Declination | +12° 56′ 12.0489″[1] |
| Apparent magnitude (V) | +4.14[2] |
| Characteristics | |
| Spectral type | K0-III[3] |
| U−B color index | +0.95[4] |
| B−V color index | +1.09[4] |
| Astrometry | |
| Radial velocity (Rv) | 14.2±0.3[2] km/s |
| Proper motion (μ) | RA: 13.537[1] mas/yr Dec.: -2.037[1] mas/yr |
| Parallax (π) | 6.1081±0.3907 mas[1] |
| Distance | 530 ± 30 ly (160 ± 10 pc) |
| Absolute magnitude (MV) | −0.96[2] |
| Orbit[5] | |
| Primary | 5 Tauri A |
| Companion | 5 Tauri B |
| Period (P) | 960 days |
| Semi-major axis (a) | 4.25 mas[6] |
| Eccentricity (e) | 0.397±0.016 |
| Inclination (i) | 36.95[6]° |
| Longitude of the node (Ω) | 207.61[6]° |
| Periastron epoch (T) | 2,414,889.565±5.82 |
| Argument of periastron (ω) (secondary) | 326.32±2.99° |
| Semi-amplitude (K1) (primary) | 8.25±0.15 km/s |
| Details | |
| 5 Tauri A | |
| Mass | 4.0±0.7[7] M☉ |
| Radius | 8.5[8] R☉ |
| Luminosity | 329.38[2] L☉ |
| Surface gravity (log g) | 1.97[9] cgs |
| Temperature | 4,644[9] K |
| Metallicity | 0.05[9] dex |
| Rotational velocity (v sin i) | 10[10] km/s |
| 5 Tauri B | |
| Mass | 1.13±0.13 M☉ |
| Other designations | |
| f Tau, 5 Tau, BD+12°486, FK5 125, GC 4184, HD 21754, HIP 16369, HR 1066, SAO 93469, TYC 656-1725-1[11] | |
| Database references | |
| SIMBAD | data |
5 Tauri is a binary star[6] in the zodiac constellation of Taurus, located approximately 530 light years from the Sun. It is visible to the naked eye as a faint orange-hued star with an apparent visual magnitude of +4.14. It is moving further from the Earth with a heliocentric radial velocity of +14 km/s.[2]
This is a spectroscopic binary with a period of 960 days and an eccentricity of about 0.4.[5] The primary component is a K-type giant with a stellar classification of K0-III.[3] It has four times the mass of the Sun[7] and is radiating 329 times the Sun's luminosity from its photosphere[2] at an effective temperature of 4,644 K.[9]
References
- ^ a b c d e 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 d e f 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 Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
- ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
- ^ a b Harper, W. E. (June 1924). "The orbit of the spectroscopic binary 5 Tauri". Publications of the Dominion Observatory Ottawa. 3: 145–149. Bibcode:1924PDAO....3..145H.
- ^ a b c d ESA (1997). "The Hipparcos and Tycho Catalogues". VizieR On-line Data Catalog. Bibcode:1997yCat.1239....0E.
- ^ a b Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv:astro-ph/0211483, Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID 12361870
- ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b c d Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
- ^ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities". Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1): 1. Bibcode:1970CoAsi.239....1B.
- ^ "5 Tau". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 December 2016.
External links
- "HD 21754 -- Spectroscopic binary". SIMBAD Astronomical Database. Retrieved 2007-01-26.
