HD 114533: Difference between revisions
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Revision as of 19:31, 16 April 2022
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 13h 14m 17.3297s[1] |
| Declination | −78° 26′ 50.8362″[1] |
| Apparent magnitude (V) | 5.84±0.01[2] |
| Characteristics | |
| Spectral type | F8 Ib[3] or G2 Ib[4] |
| U−B color index | +0.72[5] |
| B−V color index | +1.07[5] |
| Astrometry | |
| Radial velocity (Rv) | −17.9±0.3[6] km/s |
| Proper motion (μ) | RA: −9.435[1] mas/yr Dec.: −4.222[1] mas/yr |
| Parallax (π) | 1.5528 ± 0.0359 mas[1] |
| Distance | 2,100 ± 50 ly (640 ± 10 pc) |
| Absolute magnitude (MV) | −2[7] |
| Details | |
| Mass | 3.78[8] M☉ |
| Radius | 66.92[9] R☉ |
| Luminosity | 861[10] L☉ |
| Surface gravity (log g) | 1.21[8] cgs |
| Temperature | 4,765[10] K |
| Metallicity [Fe/H] | −0.42[8] dex |
| Rotational velocity (v sin i) | 9.2±1[11] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 114533 (HR 4976) is a solitary star in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 5.84,[2] allowing it to be viewed with the naked eye under ideal conditions. Located approximately 2,100 light years away,[1] the object is approaching the Solar System with a heliocentric radial velocity of about −18 km/s.[6]
This is a F[4] or G-type supergiant[4] with 3.78 times the mass of the Sun[8] and 66.92 times the radius of the Sun.[9] It shines at 861 L☉ from its enlarged photosphere at an effective temperature of 4,765 K,[10] giving it an orange yellow glow. HD 114533 is metal deficient due to a metallicity only 38% that of the Sun[8] and spins modestly with a projected rotational velocity of 9.2 km/s.[11]
References
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 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.
- ^ Malaroda, S. (August 1975). "Study of the F-type 1 MK spectral types". The Astronomical Journal. 80: 637. Bibcode:1975AJ.....80..637M. doi:10.1086/111786. ISSN 0004-6256.
- ^ a b c Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Bibcode:1975mcts.book.....H.
- ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
- ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737. S2CID 119231169.
- ^ 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. ISSN 1063-7737. S2CID 119257644.
- ^ a b c d e Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; de Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
- ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. ISSN 0035-8711.
- ^ a b De Medeiros, J. R.; Udry, S.; Burki, G.; Mayor, M. (November 2002). "A catalog of rotational and radial velocities for evolved stars: II. Ib supergiant stars". Astronomy & Astrophysics. 395 (1): 97–98. Bibcode:2002A&A...395...97D. doi:10.1051/0004-6361:20021214. ISSN 0004-6361.
