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Part 12
Part 12 ...
x185 27' x247 20'
AGC 3627 Galaxy Cluster
RA: 16h 15m 30.0s Dec: -60° 54' 00"
Mag10: 14.2 (V) Mag3: 13.1 (V) Mag1: 12.4 (V) Size: 56.0'
Class: 1 1 I # Galaxies: 59 Source: RCG
ESO 137-10 PGC 57652 Galaxy *
RA: 16h 15m 50.4s Dec: -60° 48' 08"
Mag: 12.5 (P) S.B.: --- B-V: --- Size: 2.4'x1.4' Class: (R')SAB(s)0-:
P.A.: 167 Inclination: --- R.V.: +3378 Source: RC3 *
ESO 137-6 PGC 57612 Galaxy *
RA: 16h 15m 03.9s Dec: -60° 54' 24"
Mag: 13.3 (B) S.B.: --- B-V: +1.19 Size: 1.5'x1.0' Class: E1
P.A.: 125 Inclination: --- R.V.: +5480 Source: RC3 *
ESO 137-8 PGC 57649 Galaxy *
RA: 16h 15m 46.3s Dec: -60° 55' 07"
Mag: 12.8 (P) S.B.: --- B-V: --- Size: 1.6'x1.4' Class: S0-:
P.A.: --- Inclination: --- R.V.: +3642 Source: RC3 *
ESO 137-11 PGC 57656 Galaxy *
RA: 16h 15m 53.2s Dec: -60° 50' 58"
Mag: 14.6 (P) S.B.: --- B-V: --- Size: 1.2'x0.5' Class: S0+ pec
P.A.: 172 Inclination: --- R.V.: --- Source: RC3 *
ESO 137-7 PGC 57637 Galaxy *
RA: 16h 15m 32.8s Dec: -60° 39' 53"
Mag: 13.9 (P) S.B.: --- B-V: --- Size: 0.9'x0.8' Class: S0?
P.A.: --- Inclination: --- R.V.: +4804 Source: RC3 *
ESO 137-1 PGC 57532 Galaxy *
RA: 16h 13m 20.0s Dec: -60° 45' 38"
Mag: 14.8 S.B.: --- B-V: --- Size: 1.2'x0.6' Class: SB
P.A.: 0 Inclination: --- R.V.: --- Source: PGC *
ESO 137-3 PGC 57546 Multi-Galaxy Sys *
RA: 16h 13m 46.3s Dec: -61° 00' 26"
Mag: 13.5 (P) S.B.: --- B-V: --- Size: 3.5'x1.3' Class:
P.A.: 163 Inclination: --- R.V.: +3975 Source: RC3 *
ESO 137-2 PGC 57537 Galaxy *
RA: 16h 13m 35.8s Dec: -60° 51' 53"
Mag: 13.7 (P) S.B.: --- B-V: --- Size: 1.1'x0.2' Class: S0? sp
P.A.: 170 Inclination: --- R.V.: --- Source: RC3 *
ESO 137-16 PGC 57815 Galaxy *
RA: 16h 19m 17.4s Dec: -61° 01' 14"
Mag: 14.6 (P) S.B.: --- B-V: --- Size: 1.3'x0.4' Class: SB(s)0+: sp
P.A.: 10 Inclination: --- R.V.: --- Source: RC3 *
ESO 137-4 PGC 57554 Galaxy *
RA: 16h 13m 57.5s Dec: -60° 56' 23"
Mag: 14.9 S.B.: --- B-V: --- Size: 1.0'x0.2' Class: S0/a
P.A.: 20 Inclination: --- R.V.: --- Source: PGC *
This is a somewhat difficult and frustrating galaxy cluster to observe because to the richness of the starfields and the bright background due to the Milky Way. Makes identification difficult because star-patterns are very easy to confuse because there simply are so many stars. All these egs have low to very low surface brightnesses and it is nearly impossible to properly estimate sizes in the ep because of the brightness of the background sky. The major 3 egs are ESO 137-6, -8 & 10 in a triangle with -10 at the northern tip. This tri is about 6 arc-mins a side.
-10 is seen to be slightly elong in PA 0 and is the brightest of all. It has a short line of 3 mags 12-13 *s not far to the W. 1.5' x 40" in PA 0 and has a small slightly brighter core.
-06 & -08 are E-W of each other and are simple, approx 1' diameter
spots of LSB haze brightening slightly to centre. Between -10 & -8 is -11 which is somewhat to much fainter -- a spot of mist perhaps 30" diameter with a weak central brightening. A line extended from -8 thru -10 and extended N about 10 sees -7 that is similar to 11 though has slightly higher SB. From these 5, one field W is the 15' long line of -1, -2, -4 & -3 running N-S.
Of this four, -2 & -3 are the brightest though -3 has lower SB and is a little bigger. -3 is about 1' x 40" and brightens weakly to centre and has very LSB. -2 is smaller, about 40" diameter, round but has better SB brightening slightly to centre.-4 is almost between -2 & -3 as a tiny 20" dia round spot of gossamer hardly brighter than the background as is -1 at the N end of this line.
Far off the E side of the cluster -16 sits all by itself a 1/2 degree SE of -10 as a small 30" diameter spot of very LSB mist with no detectable brightening to centre.
x185 27' x247 20'
NGC 5887 Galaxy *
RA: 15h 14m 44.0s Dec: +01° 09' 17"
Mag: 14.4 (P) S.B.: --- B-V: --- Size: 1.1'x0.9' Class: (R')SA(s)0+:
P.A.: 160 Inclination: 2 R.V.: --- Source: RC3 *
This is a small, low SB round eg about 9' SW of a mag 8*. Small, round nearly and arc-min diameter growing broadly and slightly to the centre where you can occasionally see a very small weakly brighter not well defined zone. There is a mag 14.5 * to the NNE 2'.
x185 27' x247 20'
IC 1106 Galaxy *
RA: 15h 13m 56.3s Dec: +04° 42' 39"
Mag: 15.2 S.B.: --- B-V: --- Size: 0.8'x0.3' Class:
P.A.: 33 Inclination: --- R.V.: --- Source: PGC *
IC 1107 Multi-Galaxy Sys *
RA: 15h 14m 08.9s Dec: +04° 42' 51"
Mag: 15.5 S.B.: --- B-V: --- Size: 0.4'x0.4' Class:
P.A.: --- Inclination: --- R.V.: --- Source: PGC *
-07 forms one corner of a small, faint, box with three mag 13 & 14.5 *s. Small, round and faint eg, 20-30" diameter, very LSB, faint edges and grows weakly to centre. -06 is 3' W and is similar if not a little smaller and fainter.
x185 27' x247 20'
IC 1109 Galaxy *
RA: 15h 17m 04.0s Dec: +05° 15' 21"
Mag: 15.5 S.B.: --- B-V: --- Size: 0.5'x0.5' Class:
P.A.: --- Inclination: --- R.V.: --- Source: PGC *
This eg is found a little way S of the mid-point between mags 10 & 11 *s aligned E-W and separated by about 5', that are in turn part of a snaking line of fainter *s that crosses most of the field. Small, 30" diameter round halo, faint, low SB brightens slightly to centre with no evidence of core or nucleus.
x185 27' x247 20'
AGC 2052 Galaxy Cluster
RA: 15h 16m 48.0s Dec: +07° 00' 00"
Mag10: 15.0 Mag3: --- Mag1: --- Size: 22.4' Class: 0 3 I-II
# Galaxies: 41 Source: RCG
IC 1112 Galaxy *
RA: 15h 17m 47.4s Dec: +07° 13' 05"
Mag: 15.1 (P) S.B.: --- B-V: --- Size: 1.0'x0.4' Class: SA(r)0+?
P.A.: 133 Inclination: --- R.V.: +10120 Source: RC3 *
MCG +1-39-12 PGC 54526 Galaxy *
RA: 15h 16m 44.6s Dec: +07° 01' 17"
Mag: 14.0 (P) S.B.: --- B-V: --- Size: 1.8'x0.9' Class: E
P.A.: 36 Inclination: --- R.V.: +10264 Source: RC3 *
PGC 54528 Galaxy *
RA: 15h 16m 45.8s Dec: +07° 00' 15"
Mag: 15.6 S.B.: --- B-V: --- Size: 0.5' Class:
P.A.: --- Inclination: --- R.V.: +9485 Source: PGC *
PGC 54493 Galaxy *
RA: 15h 16m 19.3s Dec: +07° 09' 44"
Mag: 15.1 (P) S.B.: --- B-V: --- Size: 1.0'x0.6' Class: SBdm:
P.A.: 41 Inclination: --- R.V.: +10980 Source: RC3 *
PGC 54550 Galaxy *
RA: 15h 17m 05.2s Dec: +06° 53' 15"
Mag: 15.1 (P) S.B.: --- B-V: --- Size: 0.8'x0.5' Class: SB(s)cd
P.A.: 173 Inclination: --- R.V.: +10206 Source: RC3 *
Note the R.Vs on these eg. These 5 are all confirmed members of AGC 2052 a large, rich supergiant galaxy cluster 150 Mpc distant (490 Mly).
IC 1112 is on the NE edge of the cluster (cluster centre assumed to be MCG +1-39-12) 20 away. It is W of a mag 14 * by 2'. Small, faint and difficult. Tiny, 15" diameter very LSB, round, grows slightly to centre without nucleus.
At the assumed centre of the cluster, is MCG +1-39-12. It is small, 20" diameter LSB and faint spot about 30" diameter with slight central brightening. Just outside its halo to the S is PGC 54528 as a tiny, 10" diameter spot of gossamer.
Similarly, -93 & -50 are equidistant 10' NW and SE of the assumed centre as tiny, 10" dia round spots of gossamer with no structure visible.
x185 27' x247 20'
IC 1113 Galaxy *
RA: 15h 18m 15.1s Dec: +12° 29' 19"
Mag: 15.1 S.B.: --- B-V: --- Size: 0.7'x0.7' Class: Sb
P.A.: --- Inclination: --- R.V.: --- Source: PGC *
This is a very small quite faint eg that took a little while to pin-down. Found to the SW of a mag 12 * by 1'. That * is part of a small keystone" type asterism of similar *s a few arc-mins across. Only 30 " from that *, 20" diameter if that growing broadly and weakly to the centre without nucleus. Very LSB, round.
x185 27' x247 20'
NGC 5910 Hickson 74A Multi-Galaxy Sys *
RA: 15h 19m 24.8s Dec: +20° 53' 46"
Mag: 14.6 (B) S.B.: --- B-V: --- Size: 0.7'x0.7' Class: E?
P.A.: --- Inclination: --- R.V.: +12255 Source: RC3 *
MCG +4-36-34 PGC 54664 Galaxy *
RA: 15h 18m 58.2s Dec: +20° 48' 55"
Mag: 15.1 (P) S.B.: --- B-V: --- Size: 1.0'x0.6' Class: SBb
P.A.: 155 Inclination: 4 R.V.: --- Source: RC3 *
-10 is a fairly faint and pretty small eg with a faint mag 15 * a little outside the W edge of the halo. Small 30-40" diameter, faint and very LSB brightening weakly to centre without any other visible structure. This is Hickson 74A, the other PGC members are not visible. However MCG +4-36-34 is 8' SW.
-34 is a very small and extremely faint eg only 20" diameter, near threshold no structure.
x185 27' x247 20'
NGC 5911 Galaxy *
RA: 15h 20m 18.2s Dec: +03° 31' 03"
Mag: 14.7 S.B.: --- B-V: --- Size: 1.0'x0.7' Class: S0
P.A.: 51 Inclination: --- R.V.: --- Source: PGC *
Not too hard to see, no worse than mod faint and probably looks a little better than the DSS makes it look. Is E of a small diamond of 3 mag 14 and a mag 12 *. 40-50" diameter, round grows mod and evenly to centre where there is a very faint stellaring.
x185 27' x247 20'
NGC 5913 Galaxy *
RA: 15h 20m 55.4s Dec: -02° 34' 44"
Mag: 14.1 (P) S.B.: --- B-V: --- Size: 1.6'x0.7' Class: SB(r)a
P.A.: 168 Inclination: 5 R.V.: --- Source: RC3 *
This is a slightly elong eg found basically due S of a 7th mag * by 10'. Fairly good size, just over 1' diameter and slightly oval in PA 0. Lowish SB but overall, no worse than mod faint, very diffuse edged halo growing broadly and slightly to centre without zones, core or nucleus.
x185 27' x247 20'
NGC 5926 Mkn 853 Multi-Galaxy Sys *
RA: 15h 23m 25.0s Dec: +12° 42' 58"
Mag: 14.5 (P) S.B.: --- B-V: --- Size: 0.8' Class: S?
P.A.: --- Inclination: --- R.V.: +6468 Source: RC3 *
This eg is only 3' SE of a mag 9*. Small but reasonable SB 30-40" diameter, round and grows evenly and slightly to centre where there is a tiny, stellaring nucleus.
x185 27' x247 20'
IC 1116 Galaxy *
RA: 15h 21m 55.3s Dec: +08° 25' 26"
Mag: 13.8 (P) S.B.: --- B-V: --- Size: 1.4'x1.2' Class: S0?
P.A.: 3 Inclination: --- R.V.: +11602 Source: RC3 *
MCG +2-39-16 PGC 54832 Galaxy *
RA: 15h 21m 40.4s Dec: +08° 24' 56"
Mag: 14.1 (P) S.B.: --- B-V: --- Size: 1.2'x1.2' Class: SB(r)b
P.A.: --- Inclination: 1 R.V.: --- Source: RC3 *
-16 is found about 4' SE of a mag 8* that is a bit distracting. Forms a small almost RA tri with mags 12 & 13 *s to the E and SE. Pretty small and round, possibly slightly off-round in PA 0, 30" diameter growing broadly and slightly to the centre without zones but it has a very faint *ar nucleus at centre. MCG +2-39-16 is 4' WSW nr a mag 12 * as a very small and very, very faint spot of gossamer about 20" diameter, no structure.
x185 27' x247 20'
IC 1118 Galaxy *
RA: 15h 24m 59.5s Dec: +13° 26' 41"
Mag: 15.0 S.B.: --- B-V: --- Size: 0.9'x0.8' Class: S
P.A.: 54 Inclination: --- R.V.: --- Source: PGC *
This eg is only 4' NE of a mag 10 * also has a 15th mag * just off the halo NW. Very, very small only 20-30" diameter, round very faint, very, very LSB took a few moments to pick up brightening slightly to centre no zones or nucleus.
Pt 13 to follow ...
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