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Old 16-11-2011, 09:31 AM
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madbadgalaxyman (Robert)
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Join Date: Mar 2011
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Another excellent discovery, Stu.

The arms in this galaxy are very fine, and the knots look small.
It does not look like the sort of galaxy that has a lot of surviving supergiant stars.

Could this be a type 1a ( non- core collapse) object?

The old photograph of this galaxy (chemical process) in the Carnegie Atlas of Galaxies is excellent:

Click image for larger version

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Here is another goodish image, this time a composite of blue and red DSS images that I downloaded from the Aladin version of DSS:

Click image for larger version

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If you go to //hla.stsci.edu, and look up the HST images of this galaxy, you can find a nice image of an unusual dust lane bisecting the bulge; this lane looks like it could be a polar feature.

cheers,
Robert

P.S.

I seem to recall once discussing with Mr Marples that, while (on the whole) the core-collapse events are more common, certain very massive galaxies without much current star-formation do seem to have plenty of type 1a events.

Last edited by madbadgalaxyman; 16-11-2011 at 09:34 AM. Reason: more info
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