HD 28454, also known as HR 1418, is a solitary, yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.1,[2] making it faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of about 107 light years based on parallax measurements of Gaia DR3 but is receding with a heliocentric radial velocity of 15 km/s.[5]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 27m 05.96464s[1] |
| Declination | −46° 56′ 50.9697″[1] |
| Apparent magnitude (V) | 6.10[2] |
| Characteristics | |
| Spectral type | F5.5 V[3] |
| U−B color index | −0.07[4] |
| B−V color index | +0.48[4] |
| Astrometry | |
| Radial velocity (Rv) | 15±2.4[5] km/s |
| Proper motion (μ) | RA: +63.853 mas/yr[1] Dec.: −270.620 mas/yr[1] |
| Parallax (π) | 30.6049 ± 0.0259 mas[1] |
| Distance | 106.57 ± 0.09 ly (32.67 ± 0.03 pc) |
| Absolute magnitude (MV) | +3.5[2] |
| Details | |
| Mass | 1.24[6] M☉ |
| Radius | 1.42±0.06[7] R☉ |
| Luminosity | 3.26±0.01[1] L☉ |
| Surface gravity (log g) | 4.30 ± 0.14[8] cgs |
| Temperature | 6,468±80[9] K |
| Metallicity [Fe/H] | −0.25±0.10[10] dex |
| Rotational velocity (v sin i) | 8[11] km/s |
| Age | 1.61[6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 28454 is an ordinary F-type main sequence star with a stellar classification of F5.5 V.[3] It has 1.21 times the mass of the Sun[6] and 1.42 times its radius.[7] It radiates 3.26 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,468 K.[9] HD 28454 is estimated to be 1.61 billion years,[6] and spins modestly with a projected rotational velocity of 8 km/s.[11] The star is metal deficient, having an iron abundance 56% that of the Sun's.[10]
References
edit- ^ 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 c 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 1562-6873. S2CID 119257644.
- ^ a b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2 June 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. eISSN 1538-3881. ISSN 0004-6256.
- ^ a b Mermilliod, J. -C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data: 0. Bibcode:1986EgUBV........0M.
- ^ 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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ a b c d Bressan, Alessandro; Marigo, Paola; Girardi, Léo; Salasnich, Bernardo; Dal Cero, Claudia; Rubele, Stefano; Nanni, Ambra (21 November 2012). "parsec : stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code: parsec : tracks and isochrones". Monthly Notices of the Royal Astronomical Society. 427 (1): 127–145. arXiv:1208.4498. Bibcode:2012MNRAS.427..127B. doi:10.1111/j.1365-2966.2012.21948.x. ISSN 1365-2966.
- ^ 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. eISSN 1538-3881.
- ^ David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. eISSN 1538-4357.
- ^ a b Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (26 May 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆". Astronomy & Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Netopil, Martin (August 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077. ISSN 1365-2966.
- ^ a b Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361.
- ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
- ^ "HD 28454". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 3, 2022.