[vsnet-chat 4004] Re: QX Pup

[aah@nofs.navy.mil]

Kato-san wrote:
>    Nebula on its way to a real planetary nebula.  QX Pup is one of the
>best known proto-planetary nebula.  The nebula is the product of its
>mass-loss.

To be strictly accurate (and less confusing!), QX Pup
is the embedded, invisible Mira inside of the
bipolar nebula OH 231.8+4.2.
As Moran wrote, a good description of the system 
(nebula and Mira) with a high-quality IR color
composite can be found at:

http://oposite.stsci.edu/pubinfo/pr/1999/39/pr-photos.html

It is very pretty, and reminds me of other bipolar
nebulae like GGD27.  Our JHK color composite 
of GGD27 can be seen at:
http://ftp.nofs.navy.mil/pub/outgoing/aah/pretty/ggd27.jpg

Arne

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