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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
SIMBAD data

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

  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.
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