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HD 55151

Topic: Astronomy

 From HandWiki - Reading time: 3 min
Short description: Star in the constellation Volans
HD 55151
Observation data
Equinox J2000.0]] (ICRS)
Constellation Volans
Right ascension  07h 06m 14.31s[1]
Declination −68° 50′ 15.29″[1]
Apparent magnitude (V) 6.47±0.01[2]
Characteristics
Spectral type K0 III[3]
U−B color index +0.87[4]
B−V color index +1.04[4]
Astrometry
Radial velocity (Rv)−13±0.14[1] km/s
Proper motion (μ) RA: +5.690[1] mas/yr
Dec.: -2.103[1] mas/yr
Parallax (π)6.3734 ± 0.0192[1] mas
Distance512 ± 2 ly
(156.9 ± 0.5 pc)
Absolute magnitude (MV)+0.43[5]
Details
Mass2.00±0.27[6] M☉
Radius12.03±0.25[1] R☉
Luminosity70.6±0.4[1] L☉
Surface gravity (log g)2.77±0.14[7] cgs
Temperature4,824+51
−48[1] K
Metallicity [Fe/H]−0.02±0.05[7] dex
Rotational velocity (v sin i)<1[8] km/s
Other designations
Database references
SIMBADdata

HD 55151 (HR 2712) is a solitary star located in the circumpolar constellation Volans. With an apparent magnitude of 6.47,[2] it is near the limit of naked eye visibility. The star is located 512 light years[1] away from the Solar System, but is drifting closer with a heliocentric radial velocity of -13 km/s.[1]

HD 55151 has a stellar classification of K0 III,[3] which states that it is an early K-type star that has exhausted hydrogen at its core and left the main sequence. It has twice the Sun's mass,[6] but has expanded to 12 times the Sun's girth.[1] It radiates at 70 solar luminosities[1] from its enlarged photosphere at an effective temperature of 4,824 K,[1] which gives it the orangish-yellow hue of a K-type star. HD 55151 belongs to the thin disk population,[9] and is slightly metal deficient. However, it has a projected rotational velocity that is too low to be measured.[8]

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. ↑ 2.0 2.1 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (1 March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H. https://ui.adsabs.harvard.edu/abs/2000A%26A...355L..27H/abstract. 
  3. ↑ 3.0 3.1 Houk, N.; Cowley, A. P. (1 January 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. https://ui.adsabs.harvard.edu/abs/1975mcts.book.....H/abstract. 
  4. ↑ 4.0 4.1 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99–110. Bibcode: 1966CoLPL...4...99J. https://ui.adsabs.harvard.edu/abs/1966CoLPL...4...99J/abstract. 
  5. ↑ Anderson, E.; Francis, Ch. (1 May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A. https://ui.adsabs.harvard.edu/abs/2012AstL...38..331A/abstract. 
  6. ↑ 6.0 6.1 Stassun, Keivan G.; Oelkers, Ryan J. et al. (1 September 2018). "The TESS Input Catalog and Candidate Target List". The Astronomical Journal 156 (3): 102. doi:10.3847/1538-3881/aad050. ISSN 0004-6256. Bibcode: 2018AJ....156..102S. 
  7. ↑ 7.0 7.1 Alves, S.; Benamati, L.; Santos, N. C.; Adibekyan, V. Zh.; Sousa, S. G.; Israelian, G.; De Medeiros, J. R.; Lovis, C. et al. (1 April 2015). "Determination of the spectroscopic stellar parameters for 257 field giant stars★". Monthly Notices of the Royal Astronomical Society 448 (3): 2749–2765. doi:10.1093/mnras/stv189. ISSN 0035-8711. Bibcode: 2015MNRAS.448.2749A. https://ui.adsabs.harvard.edu/abs/2015MNRAS.448.2749A/abstract. 
  8. ↑ 8.0 8.1 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (1 January 2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics 561: A126. doi:10.1051/0004-6361/201220762. ISSN 0004-6361. Bibcode: 2014A&A...561A.126D. https://ui.adsabs.harvard.edu/abs/2014A%26A...561A.126D/abstract. 
  9. ↑ Adibekyan, V. Zh.; Benamati, L.; Santos, N. C.; Alves, S.; Lovis, C.; Udry, S.; Israelian, G.; Sousa, S. G. et al. (1 June 2015). "Chemical abundances and kinematics of 257 G-, K-type field giants. Setting a base for further analysis of giant-planet properties orbiting evolved stars". Monthly Notices of the Royal Astronomical Society 450 (2): 1900–1915. doi:10.1093/mnras/stv716. ISSN 0035-8711. Bibcode: 2015MNRAS.450.1900A. https://ui.adsabs.harvard.edu/abs/2015MNRAS.450.1900A/abstract. 



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