HD 11007

Edit links
From Wikipedia, the free encyclopedia
HD 11007
Location of HD 11007 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Triangulum
Right ascension 01h 48m 41.56269s[1]
Declination +32° 41′ 24.7521″[1]
Apparent magnitude (V) 5.81[2]
Characteristics
Spectral type F8 V[3]
U−B color index −0.03[2]
B−V color index +0.54[2]
Astrometry
Radial velocity (Rv)−24.4±0.3[4] km/s
Proper motion (μ) RA: −167.798 mas/yr[1]
Dec.: +296.869 mas/yr[1]
Parallax (π)36.0886 ± 0.0529 mas[1]
Distance90.4 ± 0.1 ly
(27.71 ± 0.04 pc)
Absolute magnitude (MV)+3.56[5]
Details
Mass1.11[6] M☉
Radius1.67±0.04[7] R☉
Luminosity3.228+0.011
−0.010[1] L☉
Surface gravity (log g)4.03±0.03[8] cgs
Temperature6,060±64[7] K
Metallicity [Fe/H]−0.20[9] dex
Rotational velocity (v sin i)5±3[10] km/s
Age6.6±0.5[11] Gyr
Other designations
AG+32°162, BD+31°316, FK5 2120, GC 2195, HD 11007, HIP 8433, HR 523, SAO 54994, LTT 10624, TIC 20931913[12]
Database references
SIMBADdata

HD 11007 (LTT 10624; HR 523) is a probable astrometric binary[13] located in the northern constellation Triangulum. The primary is faintly visible to the naked eye as a whitish-yellow-hued star with an apparent magnitude of 5.81.[2] The system is located relatively close at a distance of 90.4 light-years based on Gaia DR3 parallax measurements[1] and it is drifting closer with a heliocentric radial velocity of −24.4 km/s.[4] At its current distance, HD 11007's brightness is diminished by an interstellar extinction of 0.09 magnitudes[14] and it has an absolute magnitude of +3.56.[5] It is moving relatively fast across the celestial sphere,[15] having a high proper motion of 341 mas/yr.[1]

The primary has a stellar classification of F8 V,[3] indicating that it is an ordinary F-type main-sequence star that is generating energy via hydrogen fusion at its core. However, it is slightly evolved, being 1.62 magnitudes above the zero age main sequence.[16] It has 111% the mass of the Sun[6] and a slightly enlarged radius 1.67 times that of the Sun.[7] It is slightly over luminous for its class, radiating 3.23 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,060 K.[7] HD 11007 A is metal deficient with an iron abundance that is 63.1% solar[9] and it spins modestly with a somewhat constrained projected rotational velocity of approximately 5 km/s.[10] The system is estimated to be 6.6 billion years old; it was suspected to be part of the thick disk population[11] but is now considered to be one of the older members of the thin disk population.[17]

References[edit]

  1. ^ a b c d e f g h 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 c d Imagawa, Fumihiko (February 1967). "Observational Results of Three-color Photometry for F-type Stars (II)". Memoirs of the College of Science, University of Kyoto. Series A. 31 (2): 93–100.
  3. ^ a b Harlan, E. A. (June 1974). "MK classifications for F-and G-type stars. 3". The Astronomical Journal. 79: 682. Bibcode:1974AJ.....79..682H. doi:10.1086/111597. ISSN 0004-6256.
  4. ^ 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.
  5. ^ 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.
  6. ^ a b Lambert, David L.; Reddy, Bacham E. (2004). "Lithium abundances of the local thin disc stars". Monthly Notices of the Royal Astronomical Society. 349 (2): 757–767. arXiv:astro-ph/0401259. Bibcode:2004MNRAS.349..757L. doi:10.1111/j.1365-2966.2004.07557.x. S2CID 118931004.
  7. ^ a b c d Masana, E.; Jordi, C.; Ribas, I. (10 April 2006). "Effective temperature scale and bolometric corrections from 2MASS photometry". Astronomy & Astrophysics. 450 (2): 735–746. arXiv:astro-ph/0601049. Bibcode:2006A&A...450..735M. doi:10.1051/0004-6361:20054021. eISSN 1432-0746. ISSN 0004-6361. S2CID 15278668.
  8. ^ Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv:1803.05922. Bibcode:2018A&A...614A..55A. doi:10.1051/0004-6361/201732209. eISSN 1432-0746. ISSN 0004-6361. S2CID 62799777.
  9. ^ a b Mishenina, T; Pignatari, M; Gorbaneva, T; Travaglio, C; Côté, B; Thielemann, F-K; Soubiran, C (October 21, 2019). "Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru". Monthly Notices of the Royal Astronomical Society. 489 (2): 1697–1708. arXiv:1908.02992. Bibcode:2019MNRAS.489.1697M. doi:10.1093/mnras/stz2202. ISSN 0035-8711. S2CID 199511206.
  10. ^ a b Balachandran, Suchitra (May 1990). "Lithium depletion and rotation in main-sequence stars". The Astrophysical Journal. 354. American Astronomical Society: 310. Bibcode:1990ApJ...354..310B. doi:10.1086/168691. ISSN 0004-637X. S2CID 120769481.
  11. ^ a b Liu, Wilson M.; Chaboyer, Brian (December 2000). "The Relative Age of the Thin and Thick Galactic Disks". The Astrophysical Journal. 544 (2): 818–829. arXiv:astro-ph/0007193. Bibcode:2000ApJ...544..818L. doi:10.1086/317231. ISSN 0004-637X. S2CID 14270478.
  12. ^ "HD 11007". SIMBAD. Centre de données astronomiques de Strasbourg.
  13. ^ 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. S2CID 14878976.
  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.
  15. ^ Ivanov, G. A. (June 2002). "Cross-identifications of stars with high proper motion". Kinematika i Fizika Nebesnykh Tel. 18: 287–288. Bibcode:2002KFNT...18..287I. ISSN 0233-7665.
  16. ^ 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. S2CID 11027621.
  17. ^ Mishenina, T. V.; Soubiran, C.; Kovtyukh, V. V.; Korotin, S. A. (May 2004). "On the correlation of elemental abundances with kinematics among galactic disk stars". Astronomy & Astrophysics. 418 (2): 551–562. arXiv:astro-ph/0401234. Bibcode:2004A&A...418..551M. doi:10.1051/0004-6361:20034454. ISSN 0004-6361. S2CID 17514939.
Retrieved from "https://en.wikipedia.org/w/index.php?title=HD_11007&oldid=1216633279"