Ψ4_Aurigae

Psi<sup>4</sup> Aurigae

Psi4 Aurigae

Star in the constellation Auriga

Psi4 Aurigae, Latinized from ψ4 Aurigae, is a single,[8] orange-hued star in the northern constellation of Auriga. It is visible to the naked eye with an apparent visual magnitude of +5.02.[2] With an annual parallax shift of 10.08 ± 0.33 mas,[1] it is approximately 324 light-years (99 parsecs) distant from Earth.

For other stars with this Bayer designation, see ψ Aurigae.
Quick Facts Constellation, Right ascension ...

This is a K-type giant star with a stellar classification of K5 III.[3] It has expanded to 33[4] times the Sun's radius and is radiating 245[4] times the Sun's luminosity from its photosphere at an effective temperature of about 3,970 K.[6] The atmosphere displays a significant enhancement of silicon.[9]

It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).

See also

References

  1. [1]
    van Leeuwen, F. (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. [2]
    Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
  3. [3]
    Roman, Nancy G. (July 1952), "The Spectra of the Bright Stars of Types F5-K5", Astrophysical Journal, 116: 122, Bibcode:1952ApJ...116..122R, doi:10.1086/145598.
  4. [4]
    Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209, S2CID 121883397.
  5. [5]
    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.
  6. [6]
    Prugniel, Ph.; et al. (2011), "The atmospheric parameters and spectral interpolator for the MILES stars", Astronomy & Astrophysics, 531: 25, arXiv:1104.4952, Bibcode:2011A&A...531A.165P, doi:10.1051/0004-6361/201116769, S2CID 54940439, A165.
  7. [7]
    "psi04 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-09-28.
  8. [8]
    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.
  9. [9]
    Franchini, M.; et al. (January 2004), "Synthetic Lick Indices and Detection of α-Enhanced Stars", The Astrophysical Journal, 601 (1): 485–499, Bibcode:2004ApJ...601..485F, doi:10.1086/380443
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