Sigma Orionis (Swedish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sigma Orionis" in Swedish language version.

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Hafez, Ihsan; Stephenson, F. Richard; Orchiston, Wayne (2011). ”Abdul-Rahan al-Şūfī and His Book of the Fixed Stars: A Journey of Re-discovery”. Highlighting the History of Astronomy in the Asia-Pacific Region. Astrophysics and Space Science Proceedings 23: sid. 121. doi:10.1007/978-1-4419-8161-5_7. ISBN 978-1-4419-8160-8. Bibcode: 2011ASSP...23..121H.
Verbunt, F.; Van Gent, R. H. (2010). ”Three editions of the star catalogue of Tycho Brahe. Machine-readable versions and comparison with the modern Hipparcos Catalogue”. Astronomy and Astrophysics 516: sid. A28. doi:10.1051/0004-6361/201014002. Bibcode: 2010A&A...516A..28V.
Caballero, J. A. (2007). ”The brightest stars of the σ Orionis cluster”. Astronomy and Astrophysics 466 (3): sid. 917. doi:10.1051/0004-6361:20066652. Bibcode: 2007A&A...466..917C.
Hernández, Jesús; Calvet, Nuria; Perez, Alice; Briceño, Cesar; Olguin, Lorenzo; Contreras, Maria E.; Hartmann, Lee; Allen, Lori; et al. (2014). ”A Spectroscopic Census in Young Stellar Regions: The σ Orionis Cluster”. The Astrophysical Journal 794: sid. 36. doi:10.1088/0004-637X/794/1/36. Bibcode: 2014ApJ...794...36H.

Hafez, Ihsan; Stephenson, F. Richard; Orchiston, Wayne (2011). ”Abdul-Rahan al-Şūfī and His Book of the Fixed Stars: A Journey of Re-discovery”. Highlighting the History of Astronomy in the Asia-Pacific Region. Astrophysics and Space Science Proceedings 23: sid. 121. doi:10.1007/978-1-4419-8161-5_7. ISBN 978-1-4419-8160-8. Bibcode: 2011ASSP...23..121H.
Verbunt, F.; Van Gent, R. H. (2010). ”Three editions of the star catalogue of Tycho Brahe. Machine-readable versions and comparison with the modern Hipparcos Catalogue”. Astronomy and Astrophysics 516: sid. A28. doi:10.1051/0004-6361/201014002. Bibcode: 2010A&A...516A..28V.
Caballero, J. A. (2007). ”The brightest stars of the σ Orionis cluster”. Astronomy and Astrophysics 466 (3): sid. 917. doi:10.1051/0004-6361:20066652. Bibcode: 2007A&A...466..917C.
Hernández, Jesús; Calvet, Nuria; Perez, Alice; Briceño, Cesar; Olguin, Lorenzo; Contreras, Maria E.; Hartmann, Lee; Allen, Lori; et al. (2014). ”A Spectroscopic Census in Young Stellar Regions: The σ Orionis Cluster”. The Astrophysical Journal 794: sid. 36. doi:10.1088/0004-637X/794/1/36. Bibcode: 2014ApJ...794...36H.