bibliography
Websites :
http://jcboulay.free.fr/astro/sommaire/image_jour/m1.htm ¨
www.abm.asso.fr/astroube/nebude/htm#un ¨
www.astrosurf.com/buil/us/mission2/mission2.htm ¨
www.astro.washington.edu/labs/clearinghouse/labs/Proppn/proppn.html ¨
www.astrosurf.com/lombry/univers-voilactee3.htm ¨
www.astrsp-mrs.fr/private/nebulae/homepn97e.html ¨
www.astrosurf.com/lombry/diversite-etoile.htm ¨
www.astrosurf.com/lombry/Images/giagramme-hr.jpg ¨
www.epinions.com/content_3403915396 ¨
www.obspm.fr/messier/Mdes/dm027.html ¨
www.obspm.fr/messier/f/m027.html ¨ membres.lycos.fr/elfalak/spectroscopie.htm ¨
www.antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search ?M27 ¨ Ciel et espace n°401
Books :
" astronomie et astrophysique" Marc Seguin et Benoit Villeneuve , "éditions Masson"
" guide des étoiles et planètes" Donald H.menzel and Jay M.Pasachoff, "éditions Delachaux et Niestlé"
Conclusion
The study of a nebula like Dumbbell, permit to learn several things on certain stars and on the different heavenly objects, like the nebula, which make up us universe. Indeed, the search make on this object, help us to understand the mechanism of our world like the life and the death of a star or that will become probably our sun in the end of its existence. Such searches allow us to see so that the man is small face to the immensity of our universe .
Mikaela GODISSART, Camille BACHELIER, Antoine CLENET.