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  • 21 Aug, 2019

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Alpha Antliae

Alpha Antliae (Alpha Ant, α Antliae, α Ant) is the brightest star in the constellation of Antlia but it has not been given a proper name. It is approximately 320 light-years from the Solar System. It is a K-type giant star with an apparent visual magnitude of 4.25. This star has 2.2 times the mass of the Sun and has expanded to 41 times the solar radius. Compared to the Sun, it has only 41% of the abundance of elements other than hydrogen and helium.

α Antliae has been reported to vary in brightness between magnitude 4.22 and 4.29, first in 1879 by Benjamin Gould, but this has not been confirmed in modern times. The evolutionary state of α Antliae is not clear but it is suspected of being on the asymptotic giant branch, with an inert carbon core.

References

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  2. ^ Hoffleit, Dorrit; Jaschek, Carlos (1991). "The Bright star catalogue". New Haven. Bibcode:1991bsc..book.....H.
  3. ^ NSV 4862, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line October 3, 2008.
  4. ^ Houk, Nancy (1983). Michigan catalogue of two-dimensional spectral types for the HD stars. Michigan Spectral Survey. Vol. 3. University of Michigan. Retrieved 2009-10-22.
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  7. ^ Cardini, D. (January 2005), "Mg II chromospheric radiative loss rates in cool active and quiet stars", Astronomy and Astrophysics, 430: 303–311, arXiv:astro-ph/0409683, Bibcode:2005A&A...430..303C, doi:10.1051/0004-6361:20041440, S2CID 12136256.
  8. ^ Alpha Antliae, Stars, Jim Kaler. Accessed on line October 3, 2008.
  9. ^ McWilliam, Andrew (December 1990). "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances". Astrophysical Journal Supplement Series. 74: 1075–1128. Bibcode:1990ApJS...74.1075M. doi:10.1086/191527.
  10. ^ "alf Ant". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 3, 2008.
  11. ^ Schneider, Howard; Wood, Sandy (2009). National Geographic Backyard Guide to the Night Sky. National Geographic Books. p. 173. ISBN 978-1-4262-0281-0.