60 Andromedae

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60 Andromedae
Andromeda constellation map.svg
Red circle.svg
Location of 60 Andromedae (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Andromeda [1]
Right ascension 02h 13m 13.322s [2]
Declination +44° 13′ 53.93″ [2]
Apparent magnitude  (V)+4.82 [3]
Characteristics
Spectral type K3.5 III Ba0.4 [4]
U−B color index +1.74 [3]
B−V color index +1.48 [3]
Astrometry
Radial velocity (Rv)–46.3 [5] km/s
Proper motion (μ)RA: –20.90 mas/yr [6]
Dec.: –14.46 mas/yr [6]
Parallax (π)5.2634±0.2576  mas [2]
Distance 620 ± 30  ly
(190 ± 9  pc)
Absolute magnitude  (MV)−1.19 [1]
Orbit [7]
Period (P)748.2±0.4 days
Semi-major axis (a)2.4±0.6 mas
Eccentricity (e)0.80
Inclination (i)54.1±19.9°
Longitude of the node (Ω)344.5±10.3°
Periastron epoch (T)37886±11 HJD
Argument of periastron (ω)
(secondary)		358±6°
Semi-amplitude (K1)
(primary)		4.88 km/s
Details
60 And A
Mass 2.0+0.7
−0.3 [8]   M☉
Luminosity 685 [1]   L☉
Surface gravity (log g)1.70±0.44 [9]   cgs
Temperature 4,054±42 [9]   K
Metallicity [Fe/H]−0.13±0.12 [9]   dex
Age 2.02 [10]   Gyr
60 And B
Mass 0.5±0.1 [8]   M☉
Other designations
b Andromedae [11] , BD+43 447, HD 13520, HIP 10340, HR 643, SAO 37867, PPM 44882, IRAS 02100+4359 [12]
Database references
SIMBAD data

60 Andromedae is a star system in the northern constellation of Andromeda, located to the east-northeast of Gamma Andromedae. 60 Andromedae is the Flamsteed designation (abbreviated 60 And), though the star also bears the Bayer designation b Andromedae. [11] It is bright enough to be seen by the naked eye on a dark night, having an apparent visual magnitude of 4.82. [3] Based upon parallax measurements, it is located at a distance of approximately 620 light-years (190 parsecs ) from Earth. [2] The system is drifting closer with a heliocentric radial velocity of –46 km/s. [5]

This system is known to have three components. The primary is an aging giant star with a stellar classification of K3.5 III Ba0.4, meaning that an overabundance of singly-ionized barium (Ba+ ion) is observed in the spectrum of the star, making it a barium star. This star is about 2 [10]  billion years old with double the mass of the Sun. [8] It is radiating 685 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,054 K. [9] The secondary component is likely a degenerate white dwarf with a orbital period of 748.2 days and an eccentricity of 0.34. There is a third component at an angular separation of 0.22  arcseconds. [4]

References

  1. 1 2 3 4 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, S2CID   119257644.
  2. 1 2 3 4 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.
  3. 1 2 3 4 Argue, A. N. (1966), "UBV photometry of 550 F, G and K type stars", Monthly Notices of the Royal Astronomical Society , 133 (4): 475–493, Bibcode:1966MNRAS.133..475A, doi: 10.1093/mnras/133.4.475 .
  4. 1 2 Eggleton, P. P.; Tokovinin, A. A. (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 , S2CID   14878976.
  5. 1 2 Wilson, Ralph Elmer (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Washington: Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W.
  6. 1 2 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752 , Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID   18759600.
  7. ↑ Ren, Shulin; Fu, Yanning (March 2013), "Hipparcos Photocentric Orbits of 72 Single-lined Spectroscopic Binaries", The Astronomical Journal, 145 (3): 7, Bibcode:2013AJ....145...81R, doi: 10.1088/0004-6256/145/3/81 , S2CID   120199240, 81.
  8. 1 2 3 Pourbaix, D.; Boffin, H. M. J. (February 2003), "Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries. II. Systems with a giant component", Astronomy and Astrophysics, 398 (3): 1163–1177, arXiv: astro-ph/0211483 , Bibcode:2003A&A...398.1163P, doi:10.1051/0004-6361:20021736, S2CID   12361870.
  9. 1 2 3 4 Koleva, M.; Vazdekis, A. (February 2012), "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library", Astronomy & Astrophysics, 538: A143, arXiv: 1111.5449 , Bibcode:2012A&A...538A.143K, doi:10.1051/0004-6361/201118065, S2CID   53999614.
  10. 1 2 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466 , Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID   118505114.
  11. 1 2 Tirion; Rappaport; Lovi (1987), Willmann-Bell, Inc. (ed.), Uranometria 2000.0 - Volume II - The Southern Hemisphere to +6°, Richmond, Virginia, USA, ISBN   0-943396-15-8.
  12. ↑ "60 And". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-03-26.
  1. "* 60 And". SIMBAD . Centre de données astronomiques de Strasbourg.
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