Re: [QUESTION] Yo, John K!



Ray Haddad wrote:
On Tue, 27 May 2008 03:38:50 -0700 (PDT), I said, "Pick a card, any
card" and "Koolchicki@xxxxxxxxxxxxxxx" <john.kulczycki@xxxxxxxxxxxx>
instead replied:

Ray Haddad wrote:
Have a look at this photo of the month:
http://www.cfht.hawaii.edu/HawaiianStarlight/

In the bottom third of the photo there is a sort of spiral galaxy
that looks as if it's surrounded by a bubble. Is that something in
front of a galaxy or is it really a galaxy in a bubble?

See:
http://images.google.ca/imgres?imgurl=http://www.nature.com/nature/journal/v426/n6964/images/426236a-f1.2.jpg&imgrefurl=http://www.nature.com/nature/journal/v426/n6964/fig_tab/426236a_F1.html&h=292&w=600&sz=22&hl=en&start=14&um=1&tbnid=4ZHD5AfCyZHtJM:&tbnh=66&tbnw=135&prev=/images%3Fq%3DPerseus%2Bcluster%2Bof%2Bgalaxies%2B%2B%26um%3D1%26hl%3Den%26sa%3DN

And
http://heritage.stsci.edu/2003/14/ngc1275/i0314bx.jpg

and
http://images.google.ca/imgres?imgurl=http://www.mpa-garching.mpg.de/HIGHLIGHT/2002/cr.gif&imgrefurl=http://www.mpa-garching.mpg.de/HIGHLIGHT/2002/highlight0203_e.html&h=667&w=670&sz=327&hl=en&start=43&um=1&tbnid=ZnkuYXlG7vLerM:&tbnh=137&tbnw=138&prev=/images%3Fq%3DPerseus%2Bcluster%2Bof%2Bgalaxies%2B%2B%26start%3D40%26ndsp%3D20%26um%3D1%26hl%3Den%26sa%3DN

Sometimes it is a mass of interstellar dust, sometimes it is a
nebulathat is between us and the galaxy. Sometimes the galaxy itself
has a gas cloud that is part of it.

I've seen most of what you pointed out in the links before, being a
big fan of HST but that bubble, or whatever it is, just matches the
galaxy so perfectly. It just looked too perfect. Know what I mean?

I thought that perhaps you might know what it was.
--
Ray

There's plasma gas ( 10,000 degrees) that is very active in that
cluster. If you are looking at the grey circular object that is next
to a yell object that is next to a blur object, it looks more like a
planetary nebula to me, but it is more likely NGC 1268. If it is 1268,
then most likely you are viewing it from above ( or below) and the
"buble) would be the light from all the stars in the galaxy. There's a
reference here:
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=7268626

That says it has very smooth arms adn a more uniform light output, way
different than say M5. so th bubble may be an illusion because of the
uniformity of the age of the stars in that galaxy. the brighter stuff
that seems to be in the buble are most likely forground stars.

There's A couple of Good "U"s Down under that should be able to give
you a better explaination than I can if you really want to know.
Warning! This sort of thing can be addictive.
.

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