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NGC 1057



 
 
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  #1  
Old October 29th 11, 08:16 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default NGC 1057

The NGC 1060 galaxy group, about 200 million light-years away, in
southeast Triangulum, caught my eye at the NGC project so I have had it
on my to-do list for some time now. I finally imaged it September 12,
2010 then forgot about it. I got several surprises once I started
processing the image. First I noticed the galactic cirrus that lays
across part of the image. I had no idea it was there. If I had I'd
have put in more than my standard 40 minutes of time. The other
surprise was all the galaxy interaction going on in this field. My
third surprise was that one of the galaxies in the field (near the
bottom) is V Zw 274 which was on my Arp-like list to image. This will
be a long post. Those here for the pretty pictures can scroll down now.

The NGC 1060 galaxy group goes by many names and galaxy counts.
Officially the cluster under this name has only 6 members. I suppose
those are the 6 NGC objects in the field. Unfortunately, one of them
NGC 1062 is just a star. Though many catalogs incorrectly put that
label on UGC 02201. Under the WBL 085 entry it has 7 members, as HDCE
0165 and PPS2 175 it has 12 members, USGC U145 sets the record at 13
members. Rather than try to figure out this ID mess I just labeled
every galaxy NED has an entry for in my image. Distance based on
redshift data using their 5 year WMAP calculator is given when possible.
Many galaxies aren't listed in NED. Three of the brightest not in NED
are noted with a question mark.

My color data is weak for coloring the galactic Cirrus. I debated even
trying to apply what little color data I had to it. I tried both ways
finally deciding to let the color data do its thing, noisy as it is.
Converting to JPG format made it look a lot worse than it does in the
TIFF file.

NGC 1057 is classed as S0. It seems to have some disk structure
including a couple faint dust bands that give it a faint spiral structure.

NGC 1060 appears to anchor the cluster. It is a huge E-S0 galaxy. Due
to the cirrus in our galaxy it is hard to tell where the galaxy ends.
It appears to have a rather large halo.

NGC 1061 which is classed as irregular. It has two obvious spiral arms,
one of which is truncated same as several other odd galaxies I've
imaged. In this case the arms are embedded in a rather bright disk.

NGC 1062 is just a star

NGC 1066 is another huge elliptical galaxy that appears to have a couple
shells. In the outer one between two stars is an odd linear feature. I
thought it an asteroid. But that is not the case. I found it in an
image in the DR8 data release of the Sloan Survey. Unless they took
their image at the exact same time as I did it is something else. Is it
a flat galaxy seen edge on or some feature of the galaxy? I found
nothing on it.

NGC 1067 is an SAB(s)c or Sc galaxy, one of the few spirals in the
group. The dust lane that defines one arm is far darker than its
counterpart that defines the other arm. It also seems to have a linear
feature almost at right angles to the bar like structure. At first
glance this seemed a normal spiral but these to features are far from
normal.

Between 1066 and 1067 is UGC 02201 which some catalogs confuse with NGC
1062. An edge on spiral classed as Sc or Sd. The disk is obviously
warped and not symmetrical. Likely it has interacted with others in the
group. Could LEDA 213075 be involved? Without distance data for it
there's no way to know.

PGC 010337 is an even more distorted spiral seen nearly face on. I
thought it a spiral I should say. Seems it is classed as either
irregular or an irregular of the Magellanic type. it shows a plume of
stars to the southwest. Likely it was a reasonable spiral before it
tangled with its neighbors.

LEDA 213071 is a disturbed galaxy to the west (right) of PGC 010337. To
me it looks like a barred ring type spiral with two plumes for arms
coming off the ring. They'd be easier to see if not for the cirrus and
extended halo of NGC 1060. No distance data on this one unfortunately.

MCG +05-07-046 well to the southeast is another ring like disk galaxy
with plumes coming from the ring. It appears to be an ordinary spiral
rather than a barred spiral. Being somewhat out of the cirrus the
plumes are easier to see. The edge on rather flat galaxy below it is
anonymous, at least to NED. Since this field is covered by the newly
released DR8 edition of the Sloan Survey I assume it will be picked up
when NED adds that huge data file to its database. I don't expect that
to be done overnight however!

V Zw 274 is an entry in the Fifth Zwicky list of galaxies and was
privately circulated rather than published. NED however picked it up
and somehow I learned of it and put it on my to-do list. Then imaged it
accidentally! Odd how things like this happen. I find no attempt to
classify it. A blob with one well defined plume and one rather ill
defined plume would seem to put it in the irregular class. How it got
so torn up is the question. Without distance data we can't even tell if
it is a member of the group. Seems likely it got tore up by passing too
close to another galaxy, likely one of the major elliptical galaxies,
but without distance data I can't tell if that is even possible. If
anyone lives in these torn up galaxies can they even detect something is
amiss? Could we if in such a messed up galaxy? Probably but I doubt
we'd really fully understand its shape. Seeing it in 2D we can't do
much better from our vantage point either.

Another strange galaxy is LEDA 213076 northeast of NGC 1067. It has a
super tiny core and is a featureless disk. If that is a disk. It could
be an SO seen end on. I find nothing on it. It's the small core that
makes it so unusual to my eye. Is that a star or star knot on the east
edge? Looking at the Sloan data it appears to be a star. Their image
shows some faint spiral arms in the disk and a faint vertical bar.

14" LX200R, L=4x10' RB=2x10' G=1x10' (Dawn killed the second green),
STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Attached Thumbnails
Click image for larger version

Name:	NGC1057L4X10RB2X10G1X10R10.JPG
Views:	500
Size:	780.2 KB
ID:	3789  Click image for larger version

Name:	NGC1057L4X10RB2X10G1X10-9-ID.JPG
Views:	340
Size:	456.2 KB
ID:	3790  Click image for larger version

Name:	NGC1057L4X10RB2X10G1X10CROPR.jpg
Views:	141
Size:	116.1 KB
ID:	3791  
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  #2  
Old November 4th 11, 04:51 PM posted to alt.binaries.pictures.astro
Stefan Lilge
external usenet poster
 
Posts: 2,269
Default NGC 1057

Rick,

there's a lot going on in this image.
Actually the small spiral is my favourite....

Stefan

"Rick Johnson" schrieb im Newsbeitrag
.com...
The NGC 1060 galaxy group, about 200 million light-years away, in
southeast Triangulum, caught my eye at the NGC project so I have had it
on my to-do list for some time now. I finally imaged it September 12,
2010 then forgot about it. I got several surprises once I started
processing the image. First I noticed the galactic cirrus that lays
across part of the image. I had no idea it was there. If I had I'd
have put in more than my standard 40 minutes of time. The other
surprise was all the galaxy interaction going on in this field. My
third surprise was that one of the galaxies in the field (near the
bottom) is V Zw 274 which was on my Arp-like list to image. This will
be a long post. Those here for the pretty pictures can scroll down now.

The NGC 1060 galaxy group goes by many names and galaxy counts.
Officially the cluster under this name has only 6 members. I suppose
those are the 6 NGC objects in the field. Unfortunately, one of them
NGC 1062 is just a star. Though many catalogs incorrectly put that
label on UGC 02201. Under the WBL 085 entry it has 7 members, as HDCE
0165 and PPS2 175 it has 12 members, USGC U145 sets the record at 13
members. Rather than try to figure out this ID mess I just labeled
every galaxy NED has an entry for in my image. Distance based on
redshift data using their 5 year WMAP calculator is given when possible.
Many galaxies aren't listed in NED. Three of the brightest not in NED
are noted with a question mark.

My color data is weak for coloring the galactic Cirrus. I debated even
trying to apply what little color data I had to it. I tried both ways
finally deciding to let the color data do its thing, noisy as it is.
Converting to JPG format made it look a lot worse than it does in the
TIFF file.

NGC 1057 is classed as S0. It seems to have some disk structure
including a couple faint dust bands that give it a faint spiral structure.

NGC 1060 appears to anchor the cluster. It is a huge E-S0 galaxy. Due
to the cirrus in our galaxy it is hard to tell where the galaxy ends.
It appears to have a rather large halo.

NGC 1061 which is classed as irregular. It has two obvious spiral arms,
one of which is truncated same as several other odd galaxies I've
imaged. In this case the arms are embedded in a rather bright disk.

NGC 1062 is just a star

NGC 1066 is another huge elliptical galaxy that appears to have a couple
shells. In the outer one between two stars is an odd linear feature. I
thought it an asteroid. But that is not the case. I found it in an
image in the DR8 data release of the Sloan Survey. Unless they took
their image at the exact same time as I did it is something else. Is it
a flat galaxy seen edge on or some feature of the galaxy? I found
nothing on it.

NGC 1067 is an SAB(s)c or Sc galaxy, one of the few spirals in the
group. The dust lane that defines one arm is far darker than its
counterpart that defines the other arm. It also seems to have a linear
feature almost at right angles to the bar like structure. At first
glance this seemed a normal spiral but these to features are far from
normal.

Between 1066 and 1067 is UGC 02201 which some catalogs confuse with NGC
1062. An edge on spiral classed as Sc or Sd. The disk is obviously
warped and not symmetrical. Likely it has interacted with others in the
group. Could LEDA 213075 be involved? Without distance data for it
there's no way to know.

PGC 010337 is an even more distorted spiral seen nearly face on. I
thought it a spiral I should say. Seems it is classed as either
irregular or an irregular of the Magellanic type. it shows a plume of
stars to the southwest. Likely it was a reasonable spiral before it
tangled with its neighbors.

LEDA 213071 is a disturbed galaxy to the west (right) of PGC 010337. To
me it looks like a barred ring type spiral with two plumes for arms
coming off the ring. They'd be easier to see if not for the cirrus and
extended halo of NGC 1060. No distance data on this one unfortunately.

MCG +05-07-046 well to the southeast is another ring like disk galaxy
with plumes coming from the ring. It appears to be an ordinary spiral
rather than a barred spiral. Being somewhat out of the cirrus the
plumes are easier to see. The edge on rather flat galaxy below it is
anonymous, at least to NED. Since this field is covered by the newly
released DR8 edition of the Sloan Survey I assume it will be picked up
when NED adds that huge data file to its database. I don't expect that
to be done overnight however!

V Zw 274 is an entry in the Fifth Zwicky list of galaxies and was
privately circulated rather than published. NED however picked it up
and somehow I learned of it and put it on my to-do list. Then imaged it
accidentally! Odd how things like this happen. I find no attempt to
classify it. A blob with one well defined plume and one rather ill
defined plume would seem to put it in the irregular class. How it got
so torn up is the question. Without distance data we can't even tell if
it is a member of the group. Seems likely it got tore up by passing too
close to another galaxy, likely one of the major elliptical galaxies,
but without distance data I can't tell if that is even possible. If
anyone lives in these torn up galaxies can they even detect something is
amiss? Could we if in such a messed up galaxy? Probably but I doubt
we'd really fully understand its shape. Seeing it in 2D we can't do
much better from our vantage point either.

Another strange galaxy is LEDA 213076 northeast of NGC 1067. It has a
super tiny core and is a featureless disk. If that is a disk. It could
be an SO seen end on. I find nothing on it. It's the small core that
makes it so unusual to my eye. Is that a star or star knot on the east
edge? Looking at the Sloan data it appears to be a star. Their image
shows some faint spiral arms in the disk and a faint vertical bar.

14" LX200R, L=4x10' RB=2x10' G=1x10' (Dawn killed the second green),
STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".



 




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