อ้างอิง ของ กลีเซอ_581

  1. 1 2 3 4 5 V* HO Lib -- Variable Star, database entry, SIMBAD. Accessed online August 21, 2008.
  2. ↑ HO Lib, database entry. "The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars". Sternberg Astronomical Institute, Moscow, Russia. สืบค้นเมื่อ 2008-08-21.
  3. 1 2 3 Bonfils; และคณะ (2005). "The HARPS search for southern extra-solar planets, VI. A Neptune-mass planet around the nearby M dwarf Gl 581". Astronomy and Astrophysics. 443: L15–L18. doi:10.1051/0004-6361:200500193. Explicit use of et al. in: |author= (help)
  4. 1 2 3 van Leeuwen, F. (2007). "HIP 74995". Hipparcos, the New Reduction. Strasbourg Astronomical Observatory. สืบค้นเมื่อ 2008-08-16.
  5. ↑ From apparent magnitude and parallax.
  6. ↑ "Star: Gl 581". Extrasolar Planets Encyclopaedia. สืบค้นเมื่อ 2008-08-21.
  7. 1 2 3 Bean, J. L.; Benedict, G. F.; Endl, M. (2006). "Metallicities of M Dwarf Planet Hosts from Spectral Synthesis". The Astrophysical Journal. 653 (1): L65–L68. doi:10.1086/510527. สืบค้นเมื่อ 2007-02-04.CS1 maint: multiple names: authors list (link)
  8. ↑ Selsis 3.4 "lower limit of the age that, considering the associated uncertainties, could be around 7 Gyr", "preliminary estimate", "should not be above 10-11 Gyr"
  9. ↑ Entry 5594-1093-1, Tycho Catalogue, The Hipparcos and Tycho Cataloguess, CDS ID I/239.
  10. ↑ Bonfils; และคณะ (2005). "The HARPS search for southern extra-solar planets, VI. A Neptune-mass planet around the nearby M dwarf Gl 581". Astronomy and Astrophysics. 443: L15–L18. Explicit use of et al. in: |author= (help)
  11. ↑ The HARPS search for southern extra-solar planets XI. An habitable super-Earth (5 M⊕) in a 3-planet system

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