Astronomy:HD 32515

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Short description: Star in the constellation Caelum
HD 32515
Observation data
Equinox J2000.0]] (ICRS)
Constellation Caelum[1]
Right ascension  05h 02m 22.8045s[2]
Declination −31° 46′ 16.8028″[2]
Apparent magnitude (V) 5.90 ± 0.01[3]
Characteristics
Spectral type K2 III[4]
B−V color index +1.17[5]
Astrometry
Radial velocity (Rv)29 ± 4[6] km/s
Proper motion (μ) RA: −6.866[2] mas/yr
Dec.: +84.982[2] mas/yr
Parallax (π)10.0579 ± 0.0324[2] mas
Distance324 ± 1 ly
(99.4 ± 0.3 pc)
Absolute magnitude (MV)+1.02[1]
Details
Mass1.52[7] M☉
Radius11.9[2] R☉
Luminosity56.3+2.6
−2.5[8] L☉
Surface gravity (log g)2.44+0.11
−0.10[9] cgs
Temperature4540 ± 100[8] K
Metallicity [Fe/H]0.00[8] dex
Rotational velocity (v sin i)1.4±1.2[10] km/s
Age4.59[7] Gyr
Other designations
CD−31°2163, CPD−31°684, GC 6169, HD 32515, HIP 23446, HR 1635, SAO 195509
Database references
SIMBADdata

HD 32515 (HR 1635) is a solitary star located in the southern constellation Caelum. It has an apparent magnitude of 5.9,[3] making it faintly visible to the naked eye under ideal conditions. The star is situated at a distance of 326 light years[2] but is receding with a heliocentric radial velocity of 29.4 km/s.[6]

HD 32515 has a stellar classification of K2 III,[4] indicating that it is an early K-type giant star. HD 32515 has an angular diameter of 1.03±0.07 mas[11] (after limb darkening correction); this yields a diameter 11.9 times that of the Sun at its estimated distance. At present, it has 152%[7] of the Sun's mass and shines at 56.3[8] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,540 K,[8] giving it an orange glow. HD 32515 has a similar metallicity[8] and age[7] to the Sun and spins slowly with a projected rotational velocity of 1.4 km/s

References

  1. ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 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. 
  4. ↑ 4.0 4.1 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40.0° to -26.0°. Bibcode: 1982mcts.book.....H. 
  5. ↑ 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. ↑ 6.0 6.1 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. doi:10.1134/S1063773706110065. ISSN 1063-7737. Bibcode: 2006AstL...32..759G. 
  7. ↑ 7.0 7.1 7.2 7.3 Luck, R. Earle (1 September 2015). "Abundances in the Local Region. I. G and K Giants". The Astronomical Journal 150 (3): 88. doi:10.1088/0004-6256/150/3/88. ISSN 0004-6256. Bibcode: 2015AJ....150...88L. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R. et al. (1 January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics 633: A34. doi:10.1051/0004-6361/201936360. ISSN 0004-6361. Bibcode: 2020A&A...633A..34C. 
  9. ↑ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A. et al. (1 August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics 628: A94. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. Bibcode: 2019A&A...628A..94A. 
  10. ↑ 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. 
  11. ↑ Lafrasse, Sylvain; Mella, Guillaume; Bonneau, Daniel; Duvert, Gilles; Delfosse, Xavier; Chesneau, Olivier; Chelli, Alain (16 July 2010). "Building the 'JMMC Stellar Diameters Catalog' using SearchCal". Optical and Infrared Interferometry II. 7734. pp. 77344E. doi:10.1117/12.857024. Bibcode: 2010SPIE.7734E..4EL. 



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