HD 30080

Last updated
HD 30080
Caelum constellation map.svg
Red circle.svg
Location of HD 30080 (circled)
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Caelum [1]
Right ascension 04h 43m 09.29298s [2]
Declination −30° 45′ 56.0166″ [2]
Apparent magnitude  (V)5.66±0.01 [3]
Characteristics
Evolutionary stage red giant branch [2]
Spectral type K3 III [4]
U−B color index +1.60 [5]
B−V color index +1.39 [5]
Astrometry
Radial velocity (Rv)−3.8±2.9 [6] km/s
Proper motion (μ)RA: −30.790 mas/yr [2]
Dec.: −67.724 mas/yr [2]
Parallax (π)5.326±0.0417  mas [2]
Distance 612 ± 5  ly
(188 ± 1  pc)
Absolute magnitude  (MV)−0.8 [1]
Details
Mass 1.16 [7]   M☉
Radius 41.62 [8]   R☉
Luminosity 299±5 [9]   L☉
Surface gravity (log g)1.40 [7]   cgs
Temperature 4,262±122 [10]   K
Metallicity [Fe/H]+0.01 [11]   dex
Rotational velocity (v sin i)<1 [12]  km/s
Other designations
12 G. Caeli [13] , CD−30°1968, CPD−31°593, GC 5762, HD 30080, HIP 21958, HR 1509, SAO 195250 [14]
Database references
SIMBAD data

HD 30080, also known as HR 1509, is a solitary, [15] orange hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 5.66, [3] allowing it to be faintly visible to the naked eye. Parallax measurements from Gaia DR3 place the object at a distance of 612 light years. It appears to be approaching the Solar System with a heliocentric radial velocity of −3.8  km/s . [6] Eggen (1989) lists it as a member of the thick disk population. [11]

HD 30080 is an evolved red giant with a stellar classification of K3 III. [4] It is currently on the red giant branch, [2] generating energy by fusing a hydrogen shell around an inert helium core. It has 116% the mass of the Sun [7] but has expanded to 41.6 times its girth. [8] It radiates 299 times the luminosity of the Sun [9] from its enlarged photosphere at an effective temperature of 4,262  K . [10] HD 30080 has a solar metallicity [11] and spins slowly with a projected rotational velocity of <1  km/s . [12]

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 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.
  3. 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.
  4. 1 2 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.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 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.
  7. 1 2 3 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.
  8. 1 2 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.
  9. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  10. 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.
  11. 1 2 3 Eggen, Olin J. (April 1989). "Large and kinematically unbiased samples of G- and K-type stars. IV - Evolved stars of the old disk population". Publications of the Astronomical Society of the Pacific. 101: 366. Bibcode:1989PASP..101..366E. doi: 10.1086/132442 . eISSN   1538-3873. ISSN   0004-6280.
  12. 1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi: 10.1051/0004-6361/201220762 . eISSN   1432-0746. 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. ↑ "HD 30080". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved September 30, 2022.
  15. ↑ 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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