HD 47667
This article will address the topic of HD 47667, which has gained relevance in various areas in recent years. Since its emergence, HD 47667 has captured the attention of academics, experts and the general public, generating controversy and debate around its implications and consequences. Throughout the next lines, different perspectives and approaches related to HD 47667, as well as its impact on society, economy and culture, will be explored. Through a detailed and rigorous analysis, the aim is to shed light on this topic and contribute to the understanding and reflection on HD 47667.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 06h 39m 16.71946s[1] |
| Declination | −14° 08′ 44.7468″[1] |
| Apparent magnitude (V) | 4.832[2] |
| Characteristics | |
| Spectral type | K2+ IIIa CN0.5 Ca1[3] |
| B−V color index | 1.459±0.072[4] |
| Astrometry | |
| Radial velocity (Rv) | +28.9±0.4[4] km/s |
| Proper motion (μ) | RA: +5.11[1] mas/yr Dec.: −6.65[1] mas/yr |
| Parallax (π) | 3.4781±0.1727 mas[5] |
| Distance | 940 ± 50 ly (290 ± 10 pc) |
| Absolute magnitude (MV) | −2.56[4] |
| Details | |
| Mass | 7.4±0.7[6] M☉ |
| Radius | 28[7] R☉ |
| Luminosity | 2,317[4] L☉ |
| Surface gravity (log g) | 1.63[2] cgs |
| Temperature | 4,200[2] K |
| Metallicity | −0.21[2] dex |
| Age | 40.1±11.9[6] Myr |
| Other designations | |
| BD−14° 1525, FK5 2515, HD 47667, HIP 31827, HR 2450, SAO 151751[8] | |
| Database references | |
| SIMBAD | data |
HD 47667 is a single[9] star in the southern constellation of Canis Major. It is visible to the naked eye with an apparent visual magnitude of 4.832.[2] The estimated distance to this star, based upon an annual parallax shift of 3.30±0.35 mas,[1] is roughly 1,000 light years. It is moving further away with a heliocentric radial velocity of +29 km/s.[4] The star made its closest approach to the Sun some 8.7 million years ago at a separation of around 362 ly (111.12 pc).[4]
Roughly 40 million years old,[6] this is an evolved K-type giant star with a stellar classification of K2+ IIIa CN0.5 Ca1.[3] The suffix notation indicates overabundances of calcium and the cyanide molecule have been found in the spectrum of the stellar atmosphere. The star has 7.4[6] times the mass of the Sun and has expanded to 28[7] times the Sun's radius. It is radiating 2,317[4] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,200 K.[2]
References
- ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c d e f Soubiran, C.; Le Campion, J.-F.; Cayrel de Strobel, G.; Caillo, A. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423.
- ^ 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 c d e f g 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.
- ^ 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 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ a b Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ "HD 47667". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-06-12.
- ^ 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.
