Nemesis (bintang hipotetis)
bintang
Nemesis adalah bintang katai merah[1] atau katai coklat[2] yang diusulkan keberadaannya pada tahun 1984. Bintang ini diusulkan mengelilingi Matahari pada jarak 95.000 Satuan Astronomi (1,5 tahun cahaya)[2] di luar awan Oort sebagai penyebab siklus kepunahan massal setiap 26 juta tahun sekali.[3][2] Sejauh ini, lebih dari 1300 katai coklat telah ditemukan dan tidak ada satupun yang berada di dalam Tata Surya.[4]
Catatan kaki
sunting- ^ Leader-Post, "Scientists claim killer star exists", 22 Feb 1984, Page B6, Associated Press
- ^ a b c Leslie Mullen (03/11/10). "Getting WISE About Nemesis". Astrobiology Magazine (Cosmic Evolution). Diakses tanggal 2010-05-15.
- ^ Raup, D.M. (1 February 1984). "Periodicity of Extinctions in the Geologic Past" (PDF). Proceedings of the National Academy of Sciences. 81 (3): 801–805. Bibcode:1984PNAS...81..801R. doi:10.1073/pnas.81.3.801. PMC 344925 . PMID 6583680. Diarsipkan dari versi asli (PDF) tanggal 2007-10-01. Diakses tanggal 30 April 2007.
- ^ Chris Gelino, Davy Kirkpatrick, Adam Burgasser. "DwarfArchives.org: Photometry, spectroscopy, and astrometry of M, L, and T dwarfs". caltech.edu. Diarsipkan dari versi asli tanggal 2019-05-11. Diakses tanggal 2011-10-23. (M=536, L=602, T=207)
Pranala luar
sunting- "Astrobiology Magazine", "Cosmic Evolution" Section, "Getting WISE about Nemesis" 03/11/10, Author: Leslie Mullen, Article about Nemesis and Tyche theory, and how the WISE Sky Survey Mission may prove or disprove the theories.
- Robert Roy Britt, Nemesis: Does the Sun Have a 'Companion'?, Space.com, 3 April 2001.
- R. Foot, Z. K. Silagadze, Do mirror planets exist in our solar system? Acta Physica Polononica B32 (2001) pp. 2271–2278.
- Richard A. Muller, Measurement of the lunar impact record for the past 3.5 billion years, and implications for the Nemesis theory, Geological Society of America Special Paper 356, pp 659–665 (2002).I
- Richard A. Muller, Nemesis (Weidenfeld and Nicholson, 1988, OP)
- Richard A. Muller, lecture where he describes Nemesis Theory
- Z.K. Silagadze, TeV scale gravity, mirror universe, and ... dinosaurs, Acta Physica Polonica B32 (2001) 99-128. (Provides a very entertaining and readable review of the Nemesis extinction hypothesis, including dozens of references to scientific articles on the topic.)
- SpaceDaily. Evidence Mounts For Companion Star To Our Sun. Apr 25, 2006
- Lynn Yarris. "Does a Companion Star to the Sun Cause Earth's Periodic Mass Extinctions?" Science Beat. Spring 1987
- Nemesis is a myth (Max Planck August 1, 2011)