Taxus Baccata

by | Mar 15, 2018 | Taxus Baccata

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This article is about A1 Aquarii. For A2 Aquarii, see 104 Aquarii. For all stars with the same Bayer designation, see A Aquarii.

103 Aquarii is a single[7] star in the equatorial constellation of Aquarius. 103 Aquarii is the Flamsteed designation, although it also bears the Bayer designation A1 Aquarii.[8] It is faint but visible to the naked eye as an orange hued star with an apparent visual magnitude of 5.34.[2] Based upon an annual parallax shift of 4.69 mas, the distance to this star is around 700 light-years (210 parsecs).[1] It is moving away from the Earth with a heliocentric radial velocity of +25 km/s.[4]

This is classified as a K-type giant star,[3] having evolved off the main sequence after exhausting the hydrogen at its core and expanded to 64[1] times the Sun's radius. The star is radiating 848[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,910 K.[5]

References

  1. ^ a b c d e f g h i j 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.
  2. ^ a b c Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
  3. ^ a b Houk, Nancy; Smith-Moore, M. (1978), "Michigan catalogue of two-dimensional spectral types for the HD stars", Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars, 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H.
  4. ^ a b Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Washington, Carnegie Institute of Washington, D.C.: 0, Bibcode:1953GCRV..C......0W.
  5. ^ a b c d McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants". Astrophysical Journal Supplement Series. 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.
  6. ^ "103 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-20.
  7. ^ 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.
  8. ^ Kostjuk, N. D. (2002), "HD 222547", database record, HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index, Institute of Astronomy of Russian Academy of Sciences, retrieved 2019-05-20.; CDS ID IV/27A.
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