HD 107914
In this article, we will carefully explore the topic of HD 107914, with the purpose of offering a broad and complete vision of its importance and relevance in the current context. Through in-depth analysis, we will address various perspectives and approaches that will allow the reader to fully understand the complexity and implications of HD 107914 in different contexts. Along these lines, we will delve into fundamental aspects related to HD 107914, providing relevant information, statistical data and expert opinions that will enrich knowledge around this topic. In addition, we will examine practical cases and personal experiences that will concretely illustrate the influence of HD 107914 in contemporary society. This article will undoubtedly be essential reading for those interested in deeply understanding the various dimensions of HD 107914.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 24m 12.93679s[1] |
| Declination | −38° 54′ 49.7344″[1] |
| Apparent magnitude (V) | 6.87±0.01[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | A7/8 III[3] |
| B−V color index | +0.28[2] |
| Astrometry | |
| Proper motion (μ) | RA: +0.085 mas/yr[1] Dec.: +0.966 mas/yr[1] |
| Parallax (π) | 12.5254±0.0221 mas[1] |
| Distance | 260.4 ± 0.5 ly (79.8 ± 0.1 pc) |
| Absolute magnitude (MV) | +2.41[4] |
| Details[1] | |
| Mass | 1.6 M☉ |
| Radius | 1.9 R☉ |
| Luminosity | 8.9 L☉ |
| Surface gravity (log g) | 4.01 cgs |
| Temperature | 7,261 K |
| Metallicity | −0.62 dex |
| Age | 1.2 Gyr |
| Other designations | |
| CCDM J12242-3855AB, CD−38°7710, HIP 60503, HD 107914, SAO 203431[5] | |
| Database references | |
| SIMBAD | data |
HD 107914 is the primary component of a binary star system in the constellation Centaurus, with an estimated distance of 255.5 light-years (78.3 pc)[6] from the Solar System. It has a stellar classification of A7-8 III, making it a giant star.
Measurement of the proper motion of this system show that it has a low transverse velocity relative to the Sun. For this reason, it has been compared to the hypothetical "Nemesis" star since it may pass through the Oort cloud in the future.[6] The star is too far away to be a companion to the Sun. However, preliminary measurements of the H-alpha line in the star's spectrum show a radial velocity in the range from –13 to +3 km/s. (This result was obtained by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona.[7]) Such values for the radial velocity are too small to produce a likely collision course with the Solar System. For example, if Vr = –10 km/s, then the distance from the Sun to HD 107914 at closest approach will be about 5.2 ly (1.6 pc).
References
- ^ a b c d e f 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.
- ^ 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.
- ^ Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
- ^ 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.
- ^ "CCDM J12242-3855AB". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ a b Potemine, Igor Yu. (2010-04-13). "Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud". arXiv:1003.5308 .
- ^ Eaton, J. A.; Williamson M. H. (2007). "The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants". Publications of the Astronomical Society of the Pacific. 119 (858): 886–897. Bibcode:2007PASP..119..886E. doi:10.1086/521231. S2CID 6497781.
