M57

Details M57 M57

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke6057.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 6057. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Interstellar Medium, Interstellar Medium Objects

Scientific paper

M57, the `RING NEBULA', is a planetary nebula in the constellation Lyra. It was discovered by Antoine Darquier de Pellepax and is now considered the prototype planetary nebula in the northern summer sky, even though William Herschel, who invented the term, did not consider M57 a planetary nebula. It consists of a hot (100 000 K) central star surrounded by a ring of dust and gas which is probably ...

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