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HD 1032

From Wikipedia, the free encyclopedia

HD 1032
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Octans
Right ascension 00h 13m 19.6219s[1]
Declination −84° 59′ 38.3178″[1]
Apparent magnitude (V) 5.77[2]
Characteristics
Evolutionary stage AGB[3]
Spectral type M0/1 III[4]
U−B color index +2.10[2]
B−V color index +1.72[2]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)4±0.4[6] km/s
Proper motion (μ) RA: +11.046 mas/yr[1]
Dec.: +17.696 mas/yr[1]
Parallax (π)3.8517 ± 0.0501 mas[1]
Distance850 ± 10 ly
(260 ± 3 pc)
Absolute magnitude (MV)−1.57[7]
Details
Mass1.11[8] M☉
Radius95.54[9] R☉
Luminosity1,461[10] L☉
Surface gravity (log g)0.69[8] cgs
Temperature3,838±122[11] K
Metallicity [Fe/H]−0.08[8] dex
Other designations
2 G. Octantis[12], CPD−85°2, FK5 3972, GC 257, HD 1032, HIP 1074, HR 47, SAO 258217[13]
Database references
SIMBADdata

HD 1032 (HR 47) is a solitary[14] star in the southern circumpolar constellation Octans. It is faintly visible to the naked eye with an apparent magnitude of 5.77[2] and is estimated to be 850 light years away from the Solar System based on parallax measure.[1] However, it is receding with a heliocentric radial velocity of 4 km/s.

HD 1032 is an asymptotic giant branch[3] star with a stellar classification of M0/1 III[4] — intermediate between a M0 and M1 giant star. It has 111% the mass of the Sun[8] and an enlarged radius of 95.54 R☉[9] as a result of its evolved state. It radiates at 1,461 times the luminosity of the Sun[10] from its photosphere at an effective temperature of 3,838 K,[11] giving a red hue. HD 1032 is slightly metal deficient with an iron abundance 83% that of the Sun.[8]

This is a suspected variable star that fluctuates between magnitudes 5.82 and 5.88 in the Hipparcos passband.[5]

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References

  1. ^ a b c d e 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.
  2. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal. 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239. ISSN 0004-6256.
  4. ^ a b 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.
  5. ^ a b Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. ISSN 1063-7729. S2CID 255195566.
  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. 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. ISSN 1063-7737. S2CID 119257644.
  8. ^ a b c d e 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. ISSN 0004-6361.
  9. ^ a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  10. ^ a b McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711.
  11. ^ 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.
  12. ^ 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.
  13. ^ "HR 47". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved July 1, 2022.
  14. ^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711.
This page was last edited on 24 February 2023, at 15:14
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