らせん星雲 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "らせん星雲" in Japanese language version.

refsWebsite

Global rank Japanese rank

1,342^nd place

415^th place

18^th place

107^th place

2^nd place

6^th place

1web.archive.org

1^st place

1^st place

doi.org

Harris H. C., et al. (2007). “Trigonometric Parallaxes of Central Stars of Planetary Nebulae”. The Astronomical Journal 133 (2): 631–638. doi:10.1086/510348.

harvard.edu

ui.adsabs.harvard.edu

Harris H. C., et al. (2007). “Trigonometric Parallaxes of Central Stars of Planetary Nebulae”. The Astronomical Journal 133 (2): 631–638. doi:10.1086/510348.

u-strasbg.fr

simbad.u-strasbg.fr

“SIMBAD Astronomical Database”. Results for NGC 7293. 2012年5月4日閲覧。

web.archive.org

NASA, NOAO, ESA, the Hubble Helix Nebula Team, M. Meixner (STScI), and T.A. Rector (NRAO). https://web.archive.org/web/20061107175554/http://hubblesite.org/newscenter/archive/releases/2003/11/