HD 75171

Last updated
HD 75171
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Volans
Right ascension 08h 44m 29.9582s [1]
Declination −65° 49′ 31.550″ [1]
Apparent magnitude  (V)6.02±0.01 [2]
Characteristics
Evolutionary stage main sequence [3]
Spectral type A4 V [4]
U−B color index +0.08 [5]
B−V color index +0.20 [5]
Astrometry
Radial velocity (Rv)10.7±0.5 [6]  km/s
Proper motion (μ)RA: −63.156  mas/yr [1]
Dec.: +103.462  mas/yr [1]
Parallax (π)17.0428 ± 0.0235  mas [1]
Distance 191.4 ± 0.3  ly
(58.68 ± 0.08  pc)
Absolute magnitude  (MV)+2.19 [7]
Details
Mass 1.81 [8]   M☉
Radius 1.84±0.05 [9]   R☉
Luminosity 11.7±0.4 [3]   L☉
Surface gravity (log g)4.33 [10]   cgs
Temperature 7,998±272 [10]   K
Metallicity [Fe/H]−0.06 [11]   dex
Rotational velocity (v sin i)96±1 [12]  km/s
Age 630 [8]   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, [8] white hued star located in the southern constellation of Volans. It has an apparent magnitude of 6.02, [2] 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, [4] indicating that it is an ordinary A-type main-sequence star. It has also been given a cooler class of A9 V. [13] It has 1.81 times the mass of the Sun [8] and a diameter of 1.84  R☉ . [9] It radiates at 12 times the luminosity of the Sun [3] from its photosphere at an effective temperature of 7,998  K . [10] Like most hot stars, it spins quickly with a projected rotational velocity of 96  km/s . [12] HD 75171 is estimated to be 630 million years old, [8] 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, [3] and Gaia Data Release 3 models also show a star roughly halfway through its main sequence life. [1] The star has a near solar metallicity, with the iron abundance being 87% that of the Sun. [11]

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References

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. ↑ 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.
  7. ↑ 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. ↑ Evans, D. S. (1966). "Fundamental data for Southern stars (6th list)". Royal Greenwich Observatory Bulletins. 110: 185. Bibcode:1966RGOB..110..185E.
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