2021A&A...656A..44R

Query : 2021A&A...656A..44R

2021A&A...656A..44R - Astronomy and Astrophysics, volume 656A44-44 (2021/12-1)

Discovery and analysis of low-surface-brightness galaxies in the environment of NGC 1052.

ROMAN J., CASTILLA A. and PASCUAL-GRANADO J.

Abstract (from CDS):

The environment of NGC 1052 has recently attracted much attention because of the presence of low-surface-brightness galaxies (LSBGs) with apparently "exotic" properties, making it a region of high interest for the detection of new objects. We used public deep photometric data from the Dark Energy Camera Legacy Survey to carry out a comprehensive search for LSBGs over a wide region of 6 x 6 degrees, equivalent to 2 x 2 Mpc at the distance of NGC 1052. We detected 42 LSBGs with r_eff > 5 arcsec and µ_g(0) > 24 mag arcsec^–2, of which 20 are previously undetected objects. Among all the newly detected objects, RCP 32 stands out with extreme properties: r_eff = 23.0 arcsec and <µ_g> _eff = 28.6 mag arcsec^–2. This makes RCP 32 one of the lowest surface brightness galaxies ever detected through integrated photometry, located at just 10 arcmin from the extensively studied NGC 1052-DF2. We explored the presence of globular clusters (GCs) in the LSBGs. We marginally detected a GC system in RCP 32, and argue that this LSBG is of great interest for follow-up observations given its extremely low baryon density. After analyzing the distribution of galaxies with available spectroscopy, we identified a large-scale structure of approximately 1 Mpc that is well isolated in redshift space and centered on NGC 1052. The spatial correlation analysis between the LSBGs and this large-scale structure suggests their association. However, when exploring the distribution of effective radius, we find an overpopulation of large LSBGs (r_eff > 15 arcsec) located close to the line of sight of NGC 1052. We argue that this is suggestive of a substructure with similar radial velocity in sight projection, but at a closer distance, to which some of these apparently larger LSBGs could be associated. However. possible effects derived from tidal interactions are worthy of further study. Our work expands the catalog of LSBGs with new interesting objects and provides a detailed environmental context for the study of LSBGs in this region.

Abstract Copyright: © ESO 2021

Journal keyword(s): galaxies: dwarf - galaxies: photometry - galaxies: groups: individual: NGC 1052

Nomenclature: Tables 1-2: [RCP2021b] NN (Nos 1-42).

Simbad objects: 77

Full paper

View the references in ADS

Number of rows : 77

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	MCG-02-07-007	GiG	02 26 21.458	-09 50 30.25		14.54		13.98	14.7	~	60	0
2	MCG-02-07-010	EmG	02 27 32.8117078176	-10 09 56.431205028		14.56		13.5	14.0	~	92	0
3	Mrk 1042	GiP	02 28 04.591	-10 10 59.98		16.11				~	23	0
4	SMDG J0229053-103612	LSB	02 29 05.3	-10 36 12						~	3	0
5	MCG-02-07-026	GiG	02 30 25.432	-10 44 55.51		14.77		13.7	14.2	~	27	0
6	LEDA 994632	AG?	02 31 45.9791358288	-09 08 47.712166440						~	12	0
7	SMDG J0232560-090326	LSB	02 32 56.0	-09 03 27						~	3	0
8	LEDA 9774	G	02 33 56.9976153288	-06 21 29.498859324		16.51		15.78	15.6	~	18	0
9	SMDG J0234169-085941	LSB	02 34 16.9	-08 59 42						~	3	0
10	NGC 988	Sy1	02 35 27.7649212080	-09 21 21.933984312		11.73		11.01	11.6	~	110	0
11	NGC 991	LSB	02 35 32.6841762360	-07 09 15.862909536		12.36		12.7	12.6	~	166	1
12	SMDG J0236080-095904	LSB	02 36 08.0	-09 59 04						~	3	0
13	SMDG J0236103-081824	LSB	02 36 10.3	-08 18 24						~	3	0
14	SMDG J0237042-051557	LSB	02 37 04.2	-05 15 58						~	4	0
15	SMDG J0237555-061523	LSB	02 37 55.5	-06 15 24						~	7	0
16	SMDG J0238236-081318	LSB	02 38 23.6	-08 13 18						~	4	0
17	SMDG J0238298-075533	LSB	02 38 29.8	-07 55 33			18.9		18.6	~	9	0
18	NGC 1022	GiG	02 38 32.703	-06 40 38.60	12.33	12.09	11.34			~	213	1
19	SMDG J0238468-061412	LSB	02 38 46.8	-06 14 12						~	4	0
20	LEDA 4014647	G	02 38 48.503	-08 02 57.73						~	8	0
21	SMDG J0239126-080826	LSB	02 39 12.7	-08 08 27			19.3		19.1	~	12	0
22	SMDG J0239150-080657	LSB	02 39 15.11	-08 06 58.6			16.5		16.2	~	116	0
23	[RCP2021b] 13	LSB	02 39 18.5	-07 32 13						~	2	0
24	[RCP2021b] 14	LSB	02 39 26.8	-07 22 15						~	2	0
25	NGC 1035	EmG	02 39 29.136	-08 08 01.11		12.89		13.0	12.6	~	188	1
26	SMDG J0239385-072825	LSB	02 39 38.5	-07 28 25						~	4	0
27	SDSS J023939.36-081342.0	LSB	02 39 39.36120	-08 13 42.0096						~	6	0
28	SMDG J0239526-081243	LSB	02 39 52.7	-08 12 44						~	6	0
29	SMDG J0240045-082646	LSB	02 40 04.7	-08 26 46			18.2		17.9	~	7	0
30	SMDG J0240082-075650	LSB	02 40 08.2	-07 56 50						~	4	0
31	SMDG J0240197-075905	LSB	02 40 19.7	-07 59 05						~	4	0
32	NGC 1042	SyG	02 40 23.9724818544	-08 26 00.736256616	11.47	11.56	11.02	11.7	11.4	~	286	1
33	SDSS J024028.61-081436.7	LSB	02 40 28.8	-08 14 36						~	9	0
34	MCG-01-07-031	EmG	02 40 30.5769081216	-06 06 12.943947744		16.43		14.9	15.0	~	21	0
35	NGC 1047	GiP	02 40 32.8417000656	-08 08 51.635714460		14.50				~	66	1
36	SMDG J0240360-092951	LSB	02 40 36.0	-09 29 52						~	3	0
37	[RCP2021b] 23	LSB	02 40 41.3	-11 04 58						~	1	0
38	SMDG J0240454-073848	LSB	02 40 45.5	-07 38 49			19.3		18.9	~	5	0
39	SMDG J0240546-051947	LSB	02 40 54.6	-05 19 48						~	3	0
40	NGC 1051	LSB	02 41 02.4963574872	-06 56 09.116016540		13.0		13.2	13.0	~	60	1
41	NGC 1052	Bla	02 41 04.79849989	-08 15 20.7519527	11.84	11.41	10.47	10.71		~	1397	2
42	NAME NGC 1052 Group	GrG	02 41 09.3	-08 07 10						~	90	0
43	SMDG J0241094-081749	LSB	02 41 09.5	-08 17 48						~	6	0
44	SMDG J0241150-072936	LSB	02 41 15.0	-07 29 36						~	5	0
45	LEDA 1021529	AG?	02 41 20.220	-07 17 06.00						~	7	0
46	LEDA 1020521	AG?	02 41 29.380	-07 20 45.89						~	8	0
47	LEDA 1007217	AG?	02 41 35.145	-08 10 24.33		15.96		14.96		~	15	0
48	SMDG J0241411-082050	LSB	02 41 41.2	-08 20 51						~	8	0
49	LEDA 3097693	LSB	02 41 46.80	-08 24 09.3			16.2		15.8	~	183	0
50	SMDG J0241474-084707	LSB	02 41 47.4	-08 47 07						~	4	0
51	LEDA 10213	AG?	02 41 49.950	-07 55 30.05		15.35		14.66		~	19	1
52	SMDG J0242248-092654	LSB	02 42 24.8	-09 26 54						~	4	0
53	[RCP2021b] 32	LSB	02 42 28.8	-08 22 36						~	7	0
54	[RCP2021b] 33	LSB	02 42 36.1	-08 02 33						~	2	0
55	SMDG J0242380-072017	LSB	02 42 38.0	-07 20 17			16.2		16.0	~	7	0
56	LEDA 1017261	AG?	02 42 46.878	-07 32 31.55						~	10	0
57	SMDG J0242471-074619	LSB	02 42 47.1	-07 46 20						~	4	0
58	SMDG J0243033-080050	LSB	02 43 03.3	-08 00 50						~	4	0
59	SMDG J0243288-075223	LSB	02 43 28.8	-07 52 24						~	5	0
60	SMDG J0243432-065519	LSB	02 43 43.3	-06 55 19						~	3	0
61	MCG-01-08-001	AG?	02 43 43.7633	-06 39 08.257		14.4		14.7	15.0	~	22	1
62	SMDG J0244385-071034	LSB	02 44 38.5	-07 10 35						~	3	0
63	SMDG J0245563-073858	LSB	02 45 56.3	-07 38 59						~	3	0
64	NGC 1084	EmG	02 45 59.926	-07 34 43.10	11.22	11.59	10.73	10.55	11.1	~	386	2
65	SMDG J0247165-081732	LSB	02 47 16.5	-08 17 32						~	3	0
66	SHOC 137	H2G	02 48 15.9460059552	-08 17 16.258401096						~	15	0
67	LEDA 1012648	GiP	02 48 39.955	-07 48 48.31						~	8	0
68	NGC 1110	GiP	02 49 09.319	-07 50 23.81		16.11		13.40	14.1	~	64	0
69	LEDA 1003250	G	02 49 11.171	-08 28 28.74						~	2	0
70	[BFK2006] GEMS-N1052-10	G	02 49 13.426	-08 06 54.16						~	6	1
71	SMDG J0252502-075140	LSB	02 52 50.2	-07 51 40						~	3	0
72	LEDA 4016901	AG?	02 53 28.641	-08 59 05.52		16.7		16.5	16.8	~	10	0
73	LEDA 976989	AG?	02 53 33.53	-10 32 08.5		16.27		15.54		~	8	0
74	NGC 1140	AGN	02 54 33.5271666624	-10 01 43.142143908	12.41	12.84	12.49	13.6	13.5	~	303	1
75	LEDA 3994671	AG?	02 55 19.66	-10 49 16.6		15.6		15.4	15.7	~	9	0
76	IC 271	LSB	02 55 59.45	-12 00 28.3		14.73		13.88	14.5	~	19	0
77	NAME M 96 Group	GrG	10 46 45	+11 49.1						~	330	0

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