HD 75171
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Volans |
| Right ascension | 08h 44m 29.9582s |
| Declination | −65° 49′ 31.550″ |
| Apparent magnitude (V) | 6.02±0.01 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A4 V |
| U−B color index | +0.08 |
| B−V color index | +0.20 |
| Astrometry | |
| Radial velocity (Rv) | 10.7±0.5 km/s |
| Proper motion (μ) | RA: −63.156 mas/yr Dec.: +103.462 mas/yr |
| Parallax (π) | 17.0428±0.0235 mas |
| Distance | 191.4 ± 0.3 ly (58.68 ± 0.08 pc) |
| Absolute magnitude (MV) | +2.19 |
| Details | |
| Mass | 1.81 M☉ |
| Radius | 1.84±0.05 R☉ |
| Luminosity | 11.7±0.4 L☉ |
| Surface gravity (log g) | 4.33 cgs |
| Temperature | 7,998±272 K |
| Metallicity [Fe/H] | −0.06 dex |
| Rotational velocity (v sin i) | 96±1 km/s |
| Age | 630 Myr |
| Other designations | |
| 41 G. Volantis, CPD−65°1013, FK5 2691, GC 12090, HD 75171, HIP 42895, HR 3495, SAO 250317 | |
| Database references | |
| SIMBAD | data |
HD 75171, also known as HR 3495, is a solitary, white hued star located in the southern constellation of Volans. It has an apparent magnitude of 6.02, making it faintly visible to the naked eye under ideal conditions. The object is relatively close at a distance of 191 light years but is receding with a heliocentric radial velocity of 10.7 km/s. Eggen (1995) lists it as a probable member of the Hyades Supercluster.
HD 75171 has a stellar classification of A4 V, indicating that it is an ordinary A-type main-sequence star. It has also been given a cooler class of A9 V. It has 1.81 times the mass of the Sun and a diameter of 1.84 R☉. It radiates at 12 times the luminosity of the Sun from its photosphere at an effective temperature of 7,998 K. Like most hot stars, it spins quickly with a projected rotational velocity of 96 km/s. HD 75171 is estimated to be 630 million years old, well around the age of the actual Hyades cluster. Zorec and Royer (2012) model it to be a dwarf star 50.4% through its main sequence lifetime, and Gaia Data Release 3 models also show a star roughly halfway through its main sequence life. The star has a near solar metallicity, with the iron abundance being 87% that of the Sun.
References
- 1 2 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. XHIP record for this object at VizieR.
- 1 2 3 4 5 6 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.
- 1 2 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.
- 1 2 3 4 Zorec, J.; Royer, F. (January 2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. eISSN 1432-0746. ISSN 0004-6361.
- 1 2 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°. Bibcode:1975mcts.book.....H.
- 1 2 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.
- ↑ 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.
- 1 2 3 4 5 De Rosa, R. J.; et al. (26 November 2013). "The VAST Survey – III. The multiplicity of A-type stars within 75 pc". Monthly Notices of the Royal Astronomical Society. 437 (2): 1216–1240. arXiv:1311.7141. Bibcode:2014MNRAS.437.1216D. doi:10.1093/mnras/stt1932. eISSN 1365-2966. ISSN 0035-8711.
- 1 2 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.
- 1 2 3 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.
- 1 2 Netopil, Martin (4 May 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. eISSN 1365-2966. ISSN 0035-8711.
- 1 2 Díaz, C. G.; González, J. F.; Levato, H.; Grosso, M. (July 2011). "Accurate stellar rotational velocities using the Fourier transform of the cross correlation maximum". Astronomy & Astrophysics. 531: A143. arXiv:1012.4858. Bibcode:2011A&A...531A.143D. doi:10.1051/0004-6361/201016386. eISSN 1432-0746. ISSN 0004-6361.
- ↑ Evans, D. S. (1966). "Fundamental data for Southern stars (6th list)". Royal Greenwich Observatory Bulletins. 110: 185. Bibcode:1966RGOB..110..185E.
