Rujukan Cabang mengufuk

  1. Arp, H. C.; Baum, W. A.; Sandage, A. R. (1952), "The HR diagrams for the globular clusters M 92 and M 3", Astronomical Journal, 57: 4–5, Bibcode:1952AJ.....57....4A, doi:10.1086/106674
  2. Sandage, A. R. (1953), "The color-magnitude diagram for the globular cluster M 3", Astronomical Journal, 58: 61–75, Bibcode:1953AJ.....58...61S, doi:10.1086/106822
  3. "Post Main Sequence Stars". Australia Telescope Outreach and Education. Dicapai pada 2 December 2012.
  4. Salaris, Maurizio; Cassisi, Santi (2005). "Evolution of Stars and Stellar Populations". Evolution of Stars and Stellar Populations: 400. Bibcode:2005essp.book.....S.
  5. Rudolf Kippenhahn; Alfred Weigert; Achim Weiss (31 October 2012). Stellar Structure and Evolution. Springer Science & Business Media. m/s. 408–. ISBN 978-3-642-30304-3.
  6. 1 2 Lee, Young-Wook; Demarque, Pierre; Zinn, Robert (1994). "The Horizontal-Branch Stars in Globular Clusters. II. The Second Parameter Phenomenon". The Astrophysical Journal. 423: 248. Bibcode:1994ApJ...423..248L. doi:10.1086/173803.
  7. Randall, S. K.; Calamida, A.; Fontaine, G.; Bono, G.; Brassard, P. (2011). "RAPIDLY PULSATING HOT SUBDWARFS IN ω CENTAURI: A NEW INSTABILITY STRIP ON THE EXTREME HORIZONTAL BRANCH?". The Astrophysical Journal. 737 (2): L27. Bibcode:2011ApJ...737L..27R. doi:10.1088/2041-8205/737/2/L27.
  8. Jeffery, C. S. (2008). "Hydrogen-Deficient Stars: An Introduction". Hydrogen-Deficient Stars. 391: 3. Bibcode:2008ASPC..391....3J.
  9. American Association of Variable Star Observers. "Types of Variables". Diarkibkan daripada yang asal pada 17 October 2018. Dicapai pada 12 March 2011.
  10. David Stevenson (9 May 2015). The Complex Lives of Star Clusters. Springer. m/s. 70–. ISBN 978-3-319-14234-0.
  11. Hannu Karttunen; Pekka Kröger; Heikki Oja; Markku Poutanen; Karl Johan Donner (9 August 2007). Fundamental Astronomy. Springer Science & Business Media. m/s. 249–. ISBN 978-3-540-34144-4.
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WikiPedia: Cabang mengufuk https://ui.adsabs.harvard.edu/abs/1952AJ.....57...... https://doi.org/10.1086%2F106674 https://ui.adsabs.harvard.edu/abs/1953AJ.....58...... https://doi.org/10.1086%2F106822 http://outreach.atnf.csiro.au/education/senior/ast... https://archive.org/details/evolutionofstars0000sa... https://ui.adsabs.harvard.edu/abs/2005essp.book...... https://books.google.com/books?id=wdSFB4B_pMUC&pg=... https://doi.org/10.1086%2F173803 https://ui.adsabs.harvard.edu/abs/1994ApJ...423..2...