K-type suspected variable star in the constellation Aquarius
HD 221148 is suspected variable star in the equatorial constellation of Aquarius. The spectrum of the star shows exceptionally strong levels of CN; one of the highest cyanogen indices measured.[4]
References
- ^ a b c d e 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.
- ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
- ^ a b c d e f g h 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
- ^ Janes, K. A. (May 1975), "Cyanogen Strengths, Luminosities, and Kinematics of K Giant Stars", Astrophysical Journal Supplement, 29: 161–183, Bibcode:1975ApJS...29..161J, doi:10.1086/190339. See p. 179.
{{citation}}: CS1 maint: postscript (link)
External links
- HR 8924 Catalog
- Image HD 221148
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