ASTRO: IC 2248 et al

IC 2248 is a spiral galaxy that reminds me of M94 and other galaxies
with an outer ring that usually appears detached from the inner
structure. In this case there seems to be a red dusty area between the
two so it isn't as detached as M94 and the others. A note at NED says:
Elliptical red object with a faint satellite. Apparently they are
seeing it as an elliptical galaxy. NED doesn't try to classify it. I
assume the faint "satellite" is SDSS J081605.62+230814.4 as it is the
brightest of several galaxies apparently seen through the faint outer
ring. I've annotated several others. I covered one up with a label so
won't try to point to it. But is it a "satellite"? There's no redshift
data for it so no way to know. More likely it is the brightest of many
distant background galaxies.

East of IC 2248 is the blue spiral KUG 0813+232, though again NED fails
to try and classify it. The only note at NED says it is "diffuse and
irregular". Yet its spiral structure is very evident. It is also
peculiar in the sense the arms are very unequal with the northern one at
first appearing short and stubby but a closer look shows it to continue
as a faint arm half way around the galaxy and thus much longer than the
south arm. That arm has a sudden kink to the right. It would appear it
has interacted with something. IC 2248 has a similar red shift so could
be the culprit. Is that why IC 2248 has that ring?

IC 2247 is the edge on spiral to the northeast of IC 2248. Its redshift
is virtually the same as other two though when rounded to 2 significant
digits as I do in the annotated image the difference appears slightly
larger than it really is. NED classifies it as Sc one place and Sbc
another. With an edge on like this classification is very difficult so
the two aren't all that surprising. It's disk appears rather reddened
with only a hint of strong blue at the very tips. The core appears
rather reddened by dust. Maybe the rest of the disk is as well.

A bit above and left of center is a distant galaxy cluster SDSSCGB 00240
and the very red galaxy SDSSCGB 00240.02. NED lists the cluster as
containing 4 members. There are about 8 in the area including the much
larger SDSSCGB 00240.01 just to its north. Only the cluster and SDSSCGB
00240.02 have redshift data putting both about 4.2 billion light-years
away. I doubt SDSSCGB 00240.01 is really a member of the group but
without redshift data this is pure speculation.

At the lower left is another cluster GMBCG J124.20497+23.00005 anchored
by the bright cluster galaxy GMBCG J124.20497+23.00005 BCG. It is at
4.5 billion light years and contains 12 galaxies though I see only a few
on the raw FITS file and only three or four on the final image (look
very hard to find those).

There are two asteroids in the image. The brightest is (47002)
Harlingten at an estimated magnitude of 18.5. The naming citation
reads: "Caisey Harlingten (b. 1947) is an amateur astronomer interested
in various scientific projects. With a keen interest in exoplanets, he
is developing astronomical instrumentation in northern Chile." The
other is (64814) 2001 XM227 at an estimated magnitude of 19.5. Both are
noted on the annotated image.

On most prior annotated images distant objects were only noted with a G
for Galaxy and Q for quasar followed by their distance in billions of
light-years. Many have asked for full identification. This makes for a
very messy image with little added useful information for most though
those interested in something I've passed over can always email me for
the identification. Having it on the image would save that step.
Considering how few times this happens I've not felt it worth the
effort. I've made an exception with this image as there weren't a lot
with redshift data. Still there are a good 1000 seen in the image that
I've not labeled with a catalog identification. To do so would be
impossible as labels would of necessity cover many galaxies and finding
a place for a label nearly impossible after a few hundred. Galaxies are
not labeled other than with the catalog name. Quasars and galaxy
clusters with a major galaxy are noted with a Q or GC/G after the
catalog name and before the distance. Let me know if you want me to do
this with future images. Note it is virtually impossible with some
images due to the number of objects in a small area to identify.

14" LX200R @ F/10, L=5X10' RGB=2X10'X3, STL-11000XM, Paramount ME

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

Some nice small galaxies in this field.
The extremely blue star is interesting too.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
. com...
IC 2248 is a spiral galaxy that reminds me of M94 and other galaxies
with an outer ring that usually appears detached from the inner
structure. In this case there seems to be a red dusty area between the
two so it isn't as detached as M94 and the others. A note at NED says:
Elliptical red object with a faint satellite. Apparently they are
seeing it as an elliptical galaxy. NED doesn't try to classify it. I
assume the faint "satellite" is SDSS J081605.62+230814.4 as it is the
brightest of several galaxies apparently seen through the faint outer
ring. I've annotated several others. I covered one up with a label so
won't try to point to it. But is it a "satellite"? There's no redshift
data for it so no way to know. More likely it is the brightest of many
distant background galaxies.

East of IC 2248 is the blue spiral KUG 0813+232, though again NED fails
to try and classify it. The only note at NED says it is "diffuse and
irregular". Yet its spiral structure is very evident. It is also
peculiar in the sense the arms are very unequal with the northern one at
first appearing short and stubby but a closer look shows it to continue
as a faint arm half way around the galaxy and thus much longer than the
south arm. That arm has a sudden kink to the right. It would appear it
has interacted with something. IC 2248 has a similar red shift so could
be the culprit. Is that why IC 2248 has that ring?

IC 2247 is the edge on spiral to the northeast of IC 2248. Its redshift
is virtually the same as other two though when rounded to 2 significant
digits as I do in the annotated image the difference appears slightly
larger than it really is. NED classifies it as Sc one place and Sbc
another. With an edge on like this classification is very difficult so
the two aren't all that surprising. It's disk appears rather reddened
with only a hint of strong blue at the very tips. The core appears
rather reddened by dust. Maybe the rest of the disk is as well.

A bit above and left of center is a distant galaxy cluster SDSSCGB 00240
and the very red galaxy SDSSCGB 00240.02. NED lists the cluster as
containing 4 members. There are about 8 in the area including the much
larger SDSSCGB 00240.01 just to its north. Only the cluster and SDSSCGB
00240.02 have redshift data putting both about 4.2 billion light-years
away. I doubt SDSSCGB 00240.01 is really a member of the group but
without redshift data this is pure speculation.

At the lower left is another cluster GMBCG J124.20497+23.00005 anchored
by the bright cluster galaxy GMBCG J124.20497+23.00005 BCG. It is at
4.5 billion light years and contains 12 galaxies though I see only a few
on the raw FITS file and only three or four on the final image (look
very hard to find those).

There are two asteroids in the image. The brightest is (47002)
Harlingten at an estimated magnitude of 18.5. The naming citation
reads: "Caisey Harlingten (b. 1947) is an amateur astronomer interested
in various scientific projects. With a keen interest in exoplanets, he
is developing astronomical instrumentation in northern Chile." The
other is (64814) 2001 XM227 at an estimated magnitude of 19.5. Both are
noted on the annotated image.

On most prior annotated images distant objects were only noted with a G
for Galaxy and Q for quasar followed by their distance in billions of
light-years. Many have asked for full identification. This makes for a
very messy image with little added useful information for most though
those interested in something I've passed over can always email me for
the identification. Having it on the image would save that step.
Considering how few times this happens I've not felt it worth the
effort. I've made an exception with this image as there weren't a lot
with redshift data. Still there are a good 1000 seen in the image that
I've not labeled with a catalog identification. To do so would be
impossible as labels would of necessity cover many galaxies and finding
a place for a label nearly impossible after a few hundred. Galaxies are
not labeled other than with the catalog name. Quasars and galaxy
clusters with a major galaxy are noted with a Q or GC/G after the
catalog name and before the distance. Let me know if you want me to do
this with future images. Note it is virtually impossible with some
images due to the number of objects in a small area to identify.

14" LX200R @ F/10, L=5X10' RGB=2X10'X3, STL-11000XM, Paramount ME

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

I expected that blue star to be a quasar but apparently not.

Rick

On 3/21/2012 3:25 PM, Stefan Lilge wrote:
Some nice small galaxies in this field.
The extremely blue star is interesting too.

Stefan

"Rick schrieb im Newsbeitrag
. com...
IC 2248 is a spiral galaxy that reminds me of M94 and other galaxies
with an outer ring that usually appears detached from the inner
structure. In this case there seems to be a red dusty area between the
two so it isn't as detached as M94 and the others. A note at NED says:
Elliptical red object with a faint satellite. Apparently they are
seeing it as an elliptical galaxy. NED doesn't try to classify it. I
assume the faint "satellite" is SDSS J081605.62+230814.4 as it is the
brightest of several galaxies apparently seen through the faint outer
ring. I've annotated several others. I covered one up with a label so
won't try to point to it. But is it a "satellite"? There's no redshift
data for it so no way to know. More likely it is the brightest of many
distant background galaxies.

East of IC 2248 is the blue spiral KUG 0813+232, though again NED fails
to try and classify it. The only note at NED says it is "diffuse and
irregular". Yet its spiral structure is very evident. It is also
peculiar in the sense the arms are very unequal with the northern one at
first appearing short and stubby but a closer look shows it to continue
as a faint arm half way around the galaxy and thus much longer than the
south arm. That arm has a sudden kink to the right. It would appear it
has interacted with something. IC 2248 has a similar red shift so could
be the culprit. Is that why IC 2248 has that ring?

IC 2247 is the edge on spiral to the northeast of IC 2248. Its redshift
is virtually the same as other two though when rounded to 2 significant
digits as I do in the annotated image the difference appears slightly
larger than it really is. NED classifies it as Sc one place and Sbc
another. With an edge on like this classification is very difficult so
the two aren't all that surprising. It's disk appears rather reddened
with only a hint of strong blue at the very tips. The core appears
rather reddened by dust. Maybe the rest of the disk is as well.

A bit above and left of center is a distant galaxy cluster SDSSCGB 00240
and the very red galaxy SDSSCGB 00240.02. NED lists the cluster as
containing 4 members. There are about 8 in the area including the much
larger SDSSCGB 00240.01 just to its north. Only the cluster and SDSSCGB
00240.02 have redshift data putting both about 4.2 billion light-years
away. I doubt SDSSCGB 00240.01 is really a member of the group but
without redshift data this is pure speculation.

At the lower left is another cluster GMBCG J124.20497+23.00005 anchored
by the bright cluster galaxy GMBCG J124.20497+23.00005 BCG. It is at
4.5 billion light years and contains 12 galaxies though I see only a few
on the raw FITS file and only three or four on the final image (look
very hard to find those).

There are two asteroids in the image. The brightest is (47002)
Harlingten at an estimated magnitude of 18.5. The naming citation
reads: "Caisey Harlingten (b. 1947) is an amateur astronomer interested
in various scientific projects. With a keen interest in exoplanets, he
is developing astronomical instrumentation in northern Chile." The
other is (64814) 2001 XM227 at an estimated magnitude of 19.5. Both are
noted on the annotated image.

On most prior annotated images distant objects were only noted with a G
for Galaxy and Q for quasar followed by their distance in billions of
light-years. Many have asked for full identification. This makes for a
very messy image with little added useful information for most though
those interested in something I've passed over can always email me for
the identification. Having it on the image would save that step.
Considering how few times this happens I've not felt it worth the
effort. I've made an exception with this image as there weren't a lot
with redshift data. Still there are a good 1000 seen in the image that
I've not labeled with a catalog identification. To do so would be
impossible as labels would of necessity cover many galaxies and finding
a place for a label nearly impossible after a few hundred. Galaxies are
not labeled other than with the catalog name. Quasars and galaxy
clusters with a major galaxy are noted with a Q or GC/G after the
catalog name and before the distance. Let me know if you want me to do
this with future images. Note it is virtually impossible with some
images due to the number of objects in a small area to identify.

14" LX200R @ F/10, L=5X10' RGB=2X10'X3, STL-11000XM, Paramount ME

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