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HD 32356

From Wikipedia, the free encyclopedia

HD 32356
Location of HD 32356 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 05h 06m 29.70999s[1]
Declination +61° 10′ 11.0995″[1]
Apparent magnitude (V) 5.99±0.01[2]
Characteristics
Spectral type K5 II[3]
B−V color index +1.36[4]
Astrometry
Radial velocity (Rv)−45.2±1.2[5] km/s
Proper motion (μ) RA: +39.428 mas/yr[1]
Dec.: −80.907 mas/yr[1]
Parallax (π)5.8511 ± 0.0881 mas[1]
Distance557 ± 8 ly
(171 ± 3 pc)
Absolute magnitude (MV)+0.23[6]
Details
Mass1.18[7] M☉
Radius30.67±1.58[8] R☉
Luminosity300+9
−8[1] L☉
Surface gravity (log g)1.56±0.11[9] cgs
Temperature4,111±13[10] K
Metallicity [Fe/H]−0.30±0.05[10] dex
Rotational velocity (v sin i)<1.0[11] km/s
Age4.27+0.86
−0.72[9] Gyr
Other designations
AG+61°416, BD+60°857, GC 6202, HD 32356, HIP 23766, HR 1624, SAO 13369, TIC 286710338[12]
Database references
SIMBADdata

HD 32356, also designated as HR 1624, is an astrometric binary[13] located in the northern circumpolar constellation Camelopardalis, the giraffe, near β Camelopardalis. The visible component is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.99.[2] Gaia DR3 parallax measurements imply a distance of 557 light-years[1] and it is currently drifting closer with a heliocentric radial velocity of −45.2 km/s.[5] At its current distance, HD 32356's brightness is diminished by an interstellar extinction of 0.29 magnitudes[14] and it has an absolute magnitude of +0.23.[6]

The visible component has a stellar classification of K5 II,[3] indicating that it is an evolved K-type bright giant that has ceased hydrogen fusion at its core and left the main sequence. It has 1.18 times the mass of the Sun[7] but at the age of 4.27 billion years,[9] it has expanded to 30.67 times the radius of the Sun.[8] It radiates 300 times the luminosity of the Sun[1] from its enlarged photosphere at an effective temperature of 4,111 K.[10] HD 32356 A is metal deficient with an iron abundance roughly half of the Sun's[10] and it spins too slowly for its projected rotational velocity to be measured accurately.[11]

References

  1. ^ a b c d e f g 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. ^ 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. S2CID 17128864.
  3. ^ a b Bartaya, R. A. (1979). "Catalog of spectral and luminosity classes of 10396 stars in Kapteyn's selected areas NN 2-43". Abastumanskaia Astrofizicheskaia Observatoriia Byulleten. 51: 1. Bibcode:1979AbaOB..51....1B. ISSN 0258-7327.
  4. ^ Ljunggren, B.; Oja, T. (1965). "Photoelectric measurements of magnitudes and colours for 849 stars". Arkiv for Astronomi. 3: 439–465. Bibcode:1965ArA.....3..439L. ISSN 0004-2048.
  5. ^ 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.
  6. ^ a b 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.
  7. ^ a b Anders, F.; et al. (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. eISSN 1432-0746. ISSN 0004-6361. S2CID 131780028.
  8. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (April 8, 2004). "The angular sizes of dwarf stars and subgiants: Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.
  9. ^ a b c Feuillet, Diane K.; Bovy, Jo; Holtzman, Jon; Girardi, Léo; MacDonald, Nick; Majewski, Steven R.; Nidever, David L. (20 January 2016). "Determining Ages of APOGEE Giants with Known Distances". The Astrophysical Journal. 817 (1): 40. arXiv:1511.04088. Bibcode:2016ApJ...817...40F. doi:10.3847/0004-637X/817/1/40. eISSN 1538-4357. S2CID 118675933.
  10. ^ a b c d Wu, Yue; Singh, H. P.; Prugniel, P.; Gupta, R.; Koleva, M. (2 December 2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. arXiv:1009.1491. Bibcode:2011A&A...525A..71W. doi:10.1051/0004-6361/201015014. eISSN 1432-0746. ISSN 0004-6361.
  11. ^ a b de Medeiros, J. R.; Mayor, M. (November 1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433–460. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. ISSN 0365-0138. S2CID 54046583.
  12. ^ "HD 32356". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 7, 2024.
  13. ^ Frankowski, A.; Jancart, S.; Jorissen, A. (19 December 2006). "Proper-motion binaries in the Hipparcos catalogue: Comparison with radial velocity data". Astronomy & Astrophysics. 464 (1): 377–392. arXiv:astro-ph/0612449. Bibcode:2007A&A...464..377F. doi:10.1051/0004-6361:20065526. eISSN 1432-0746. ISSN 0004-6361. S2CID 14010423.
  14. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
This page was last edited on 16 May 2024, at 00:22
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