Pinwheel nebula

Pinwheel nebula

A pinwheel nebula is a "nebulous region" in the shape of a pinwheel.

piral galaxies

The term 'Pinwheel nebula' is an antiquated misnomer used by observers before Edwin Hubble realized that these spiral shaped nebulae were actually 'island universes'.

Wolf-Rayet nebulae

Some Wolf-Rayet stars are surrounded by pinwheel nebulae. These nebulae are formed from the dust that is spewed out of a binary star system. The stellar winds of the two stars collide and form two dust lanes that spiral outward with the rotation of the system.

External links

* [http://www.physics.usyd.edu.au/~gekko/wr104.html] Some Wolf-Rayet stars in binaries are close enough that we can image a rotating "pinwheel nebula" showing the dust generated by colliding winds in the binary system, from Aperture Masking Interferometry observations.
* [http://www.spacetelescope.org/news/html/heic0602.html Pinwheel Galaxy from ESA/Hubble]


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