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
Right ascension 02h 13m 13.32387s [1]
Declination +44° 13′ 53.9546″ [1]
Apparent magnitude  (V)+4.82 [2]
Characteristics
Spectral type K3.5 III Ba0.4 [3]
U−B color index +1.74 [2]
B−V color index +1.48 [2]
Astrometry
Radial velocity (Rv)–46.3 [4]  km/s
Proper motion (μ)RA: –20.90 [1]   mas/yr
Dec.: –14.46 [1]   mas/yr
Parallax (π)6.15 ± 0.63  mas [1]
Distance approx. 530  ly
(approx. 160  pc)
Orbit [5]
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 [6]   M☉
Surface gravity (log g)1.70±0.44 [7]   cgs
Temperature 4054±42 [7]   K
Metallicity [Fe/H]−0.13±0.12 [7]   dex
60 And B
Mass 0.5±0.1 [6]   M☉
Other designations
b  Andromedae, [8] BD+43 447, HD  13520, HIP  10340, HR  643, IRAS  02100+4359, SAO  37867, PPM  44882
Database references
SIMBAD data

60 Andromedae (abbreviated 60 And) is a star system in the northern constellation of Andromeda, located to the west-northwest of Gamma Andromedae. 60 Andromedae is the Flamsteed designation though the star also bears the Bayer designation b Andromedae. It is bright enough to be seen by the naked eye with an apparent visual magnitude of 4.82. [2] Based upon parallax measurements made during the Hipparcos mission, it is at a distance of roughly 530 light-years (160 parsecs ) from Earth. [1]

This system is known to have three components. The primary is a giant star with a stellar classification of K3.5 III Ba0.4, meaning that an overabundance of barium ionized one time is observed in the spectrum of the star, making it a barium star. The secondary component is likely a white dwarf with a period of 748.2 days and an eccentricity of 0.34. There is a third component at an angular separation of 0.22  arcseconds. [3]

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<span class="mw-page-title-main">Chi Piscium</span> Yellow-hued giant star in the constellation Pisces

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References

  1. 1 2 3 4 5 6 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.
  2. 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 .
  3. 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.
  4. ↑ 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.
  5. ↑ 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.
  6. 1 2 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.
  7. 1 2 3 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.
  8. ↑ 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.
  1. "* 60 And". SIMBAD . Centre de données astronomiques de Strasbourg.
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