HD 70514

Last updated
HD 70514
Volans constellation map.svg
Red circle.svg
HD 70514 is the star circled in red.
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Volans
Right ascension 08h 18m 18.80687s [1]
Declination −65° 36′ 47.4919″ [1]
Apparent magnitude  (V)5.06±0.01 [2]
Characteristics
Evolutionary stage RGB [3]
Spectral type K1 III [4]
U−B color index +1.19 [5]
B−V color index +1.15 [5]
Astrometry
Radial velocity (Rv)0.00±1.78 [6]  km/s
Proper motion (μ)RA: +21.054 [1]   mas/yr
Dec.: +21.799 [1]   mas/yr
Parallax (π)10.9324 ± 0.0626  mas [1]
Distance 298 ± 2  ly
(91.5 ± 0.5  pc)
Absolute magnitude  (MV)+0.26 [7]
Details
Mass 1.88±0.29 [3]   M☉
Radius 14.6 [8]   R☉
Luminosity 93±1 [1]   L☉
Surface gravity (log g)2.27±0.47 [9]   cgs
Temperature 4,610±90 [10]   K
Metallicity [Fe/H]+0.22 [11]   dex
Rotational velocity (v sin i)<1 [12]  km/s
Other designations
24 G. Volantis [13] , CPD−65°907, GC  11366, HD  70514, HIP  40680, HR  3280, SAO  250186
Database references
SIMBAD data

HD 70514, also known as HR 3280, is a solitary, [14] orange hued star located in the southern circumpolar constellation Volans, the flying fish. It has an apparent magnitude of 5.06, [2] making it one of the brighter members of this generally faint constellation. Based on parallax measurements from the Gaia spacecraft, the star is estimated to be 298 light years distant. [1] It appears that its distance to the Solar System isn't changing, having a heliocentric radial velocity of 0  km/s . [6] Eggen (1994) lists it as a member of the thin disk population. [11]

HD 70514 is classified as a red giant, having a stellar classification of K1 III. It is currently on the red giant branch, fusing a hydrogen shell around an inert helium. As a result, it has expanded to 14.6 times radius of the Sun [8] and now radiates 93 times its luminosity [1] from its enlarged photosphere at an effective temperature of 4,610  K . [10] Based on asteroseismologic measurements, HD 70514 has a mass 1.88 times that of the Sun. [3] HR 3280 is metal enriched, having a metallicity 66% above solar levels. Like most giants, it rotates rather slowly, having a projected rotational velocity of <1  km/s . [12]

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<span class="mw-page-title-main">HD 106248</span> Star in the constellation Chamaeleon

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<span class="mw-page-title-main">HD 198716</span> Star in the constellation of Microscopium

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References

  1. 1 2 3 4 5 6 7 8 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 Stello, D.; Bruntt, H.; Preston, H.; Buzasi, D. (15 January 2008). "Oscillating K Giants with the WIRESatellite: Determination of Their Asteroseismic Masses". The Astrophysical Journal. 674 (1): L53–L56. arXiv: 0801.2155 . Bibcode:2008ApJ...674L..53S. doi: 10.1086/528936 . eISSN   1538-4357. ISSN   0004-637X.
  4. ↑ 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. 1 2 Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (November 2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889–896. arXiv: 0705.0878 . Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. eISSN   1521-3994. ISSN   0004-6337. S2CID   119323941.
  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 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.
  9. ↑ Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv: astro-ph/9911002 . Bibcode:1999A&A...352..555A. ISSN   0004-6361.
  10. 1 2 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy & Astrophysics. 633: A34. arXiv: 1910.12732 . Bibcode:2020A&A...633A..34C. doi: 10.1051/0004-6361/201936360 . eISSN   1432-0746. ISSN   0004-6361.
  11. 1 2 Eggen, O. J. (February 1994). "Evolved GK stars near the Sun. 2: The young disk population". The Astronomical Journal. 107: 594. Bibcode:1994AJ....107..594E. doi: 10.1086/116879 . ISSN   0004-6256.
  12. 1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014-01-01). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi: 10.1051/0004-6361/201220762 . ISSN   0004-6361.
  13. ↑ 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.
  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.
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