ASTRO: FGC 0634 A flat ghost galaxy

FGC 0364/RFGC 0634/2MFGC 02411 is a flat "ghost" galaxy in northeastern
Cassiopeia about 110 million light-years distant. NED classifies it as
Sdm. Assuming that is its distance it is some 140,000 light-years in
diameter. Now that is a big spiral. Yet is is exceedingly faint,
almost ghost-like for an edge on spiral. There's a lot of IFN
throughout the field but I can't imagine it is dimming the galaxy to any
great extent. But just looking through the disk of the galaxy to see
this one is likely grealy dimming all distant galaxies. Still this may
be what a low surface brightness galaxy looks like seen edge on.
There's no obvious dust lane nor core region to this galaxy. Just a
very thin disk of a size sufficient to make three flat galaxy catalogs.
It is also known as UGC 2411 and PGC 011282. It is listed as a radio
source, HIJASS J0258+75, so must harbor some activity making it a radio
strong galaxy.

It is the only galaxy in the field with a known redshift or even a
magnitude estimate. Therefore I didn't bother to include an annotated
image. In fact there's little else of interest in this rather lonely
part of the sky. Transparency was poor when I took this image, so was
seeing, and the sky very bright with a low level aurora. That limited
the IFN I was able to pick up. I tried for more data but the sky gods
had other ideas. The data from several other nights was so bad I didn't
even save it. Someone with better skies should be able to do a much
better job on the IFN as well as the galaxy. I have it on the reshoot
list but we all know that a reshoot is highly unlikely as I have far too
many objects still waiting their first attempt at my capturing their
photons.

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Rick
--
Prefix is correct. Domain is arvig dot net

Beautiful image Rick. It doesn't get much thinner.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
...

FGC 0364/RFGC 0634/2MFGC 02411 is a flat "ghost" galaxy in northeastern
Cassiopeia about 110 million light-years distant. NED classifies it as
Sdm. Assuming that is its distance it is some 140,000 light-years in
diameter. Now that is a big spiral. Yet is is exceedingly faint,
almost ghost-like for an edge on spiral. There's a lot of IFN
throughout the field but I can't imagine it is dimming the galaxy to any
great extent. But just looking through the disk of the galaxy to see
this one is likely grealy dimming all distant galaxies. Still this may
be what a low surface brightness galaxy looks like seen edge on.
There's no obvious dust lane nor core region to this galaxy. Just a
very thin disk of a size sufficient to make three flat galaxy catalogs.
It is also known as UGC 2411 and PGC 011282. It is listed as a radio
source, HIJASS J0258+75, so must harbor some activity making it a radio
strong galaxy.

It is the only galaxy in the field with a known redshift or even a
magnitude estimate. Therefore I didn't bother to include an annotated
image. In fact there's little else of interest in this rather lonely
part of the sky. Transparency was poor when I took this image, so was
seeing, and the sky very bright with a low level aurora. That limited
the IFN I was able to pick up. I tried for more data but the sky gods
had other ideas. The data from several other nights was so bad I didn't
even save it. Someone with better skies should be able to do a much
better job on the IFN as well as the galaxy. I have it on the reshoot
list but we all know that a reshoot is highly unlikely as I have far too
many objects still waiting their first attempt at my capturing their
photons.

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Rick
--
Prefix is correct. Domain is arvig dot net