LDCE 1416/KTG 71 A triple galaxy system

LDCE 1416/KTG 71 is a triple galaxy system about 200 million light-years distant located in central Delphinus. The three members are NGC 6956/UGC 11619, UGC 11620 and UGC 11623.

NGC 6956 was discovered by William Herschel on October 19, 1784 though it isn't in either Herschel 400 observing list. It is classified as SBb. It's two arms are quite unsymmetrical. It appears to have many star clusters along is arms. It is quite large at about 90,000 light-years in diameter.

UGC 11620 is classified as Sb. It appears to be a red spiral indicating star formation has mostly ended for this galaxy. UGC 11623 is classified as SB(r)a. All have redshift values that indicate these are the same distance and thus a related group.

The field is in the Zone of Avoidance" so poorly studied. All objects NED lists as galaxies are shown in the annotated image. Obviously there are many more galaxies in the image. Some of these are listed as UvS objects (Ultraviolet sources) rather than galaxies. Position of these is approximate. Most of these that NED lists are just stars. Within a 20 minute radius of NGC 6956 NED lists over 1000 UvS objects. I didn't bother to annotate those that are galaxies. Sorting out stars from galaxies would take many hours I don't have to spare.

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

Rick

Rick,

these are beautiful small galaxies. A good change from the usual summer
objects.

Stefan


"WA0CKY" schrieb im Newsbeitrag ...


LDCE 1416/KTG 71 is a triple galaxy system about 200 million light-years
distant located in central Delphinus. The three members are NGC
6956/UGC 11619, UGC 11620 and UGC 11623.

NGC 6956 was discovered by William Herschel on October 19, 1784 though
it isn't in either Herschel 400 observing list. It is classified as
SBb. It's two arms are quite unsymmetrical. It appears to have many
star clusters along is arms. It is quite large at about 90,000
light-years in diameter.

UGC 11620 is classified as Sb. It appears to be a red spiral indicating
star formation has mostly ended for this galaxy. UGC 11623 is
classified as SB(r)a. All have redshift values that indicate these are
the same distance and thus a related group.

The field is in the Zone of Avoidance" so poorly studied. All objects
NED lists as galaxies are shown in the annotated image. Obviously there
are many more galaxies in the image. Some of these are listed as UvS
objects (Ultraviolet sources) rather than galaxies. Position of these
is approximate. Most of these that NED lists are just stars. Within a
20 minute radius of NGC 6956 NED lists over 1000 UvS objects. I didn't
bother to annotate those that are galaxies. Sorting out stars from
galaxies would take many hours I don't have to spare.

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

Rick


--
WA0CKY