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

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

2021A&A...656A..44R - Astronomy and Astrophysics, volume 656A, 44-44 (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 reff > 5 arcsec and µg(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: reff = 23.0 arcsec and <µg> 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 (reff > 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

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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 - 2024 		#notes
1 MCG-02-07-007 GiG 02 26 21.458 -09 50 30.25   14.54   13.98 14.7 ~ 56 0
2 Mrk 1039 EmG 02 27 32.8117078176 -10 09 56.431205028   14.56   13.5 14.0 ~ 85 0
3 Mrk 1042 GiP 02 28 04.591 -10 10 59.98   16.11       ~ 22 0
4 [RCP2021b] 1 LSB 02 29 05.3 -10 36 12           ~ 1 0
5 MCG-02-07-026 GiG 02 30 25.432 -10 44 55.51   14.77   13.7 14.2 ~ 26 0
6 LEDA 994632 AG? 02 31 45.9791358288 -09 08 47.712166440           ~ 11 0
7 [RCP2021b] 2 LSB 02 32 56.0 -09 03 27           ~ 1 0
8 6dFGS gJ023357.1-062134 G 02 33 56.9976153288 -06 21 29.498859324   16.51   15.78 15.6 ~ 16 0
9 [RCP2021b] 3 LSB 02 34 16.9 -08 59 42           ~ 1 0
10 NGC 988 Sy1 02 35 27.7649212080 -09 21 21.933984312   11.73   11.01 11.6 ~ 97 0
11 NGC 991 LSB 02 35 32.6841762360 -07 09 15.862909536   12.36   12.7 12.6 ~ 155 1
12 [RCP2021b] 4 LSB 02 36 08.0 -09 59 04           ~ 1 0
13 [RCP2021b] 5 LSB 02 36 10.3 -08 18 24           ~ 1 0
14 [GGS2018] 295 LSB 02 37 04.2 -05 15 58           ~ 2 0
15 [GGS2018] 285 LSB 02 37 55.5 -06 15 24           ~ 4 0
16 [RCP2021b] 8 LSB 02 38 23.6 -08 13 18           ~ 1 0
17 [CVD2018] NGC1052-DF7 LSB 02 38 29.8 -07 55 33     18.9   18.6 ~ 4 0
18 NGC 1022 GiG 02 38 32.703 -06 40 38.60 12.33 12.09 11.34     ~ 203 1
19 [GGS2018] 292 LSB 02 38 46.8 -06 14 12           ~ 2 0
20 LEDA 4014647 G 02 38 48.503 -08 02 57.73           ~ 5 0
21 [CVD2018] NGC1052-DF5 LSB 02 39 12.7 -08 08 27     19.3   19.1 ~ 8 0
22 [CVD2018] NGC1052-DF4 LSB 02 39 15.11 -08 06 58.6     16.5   16.2 ~ 84 0
23 [RCP2021b] 13 LSB 02 39 18.5 -07 32 13           ~ 1 0
24 [RCP2021b] 14 LSB 02 39 26.8 -07 22 15           ~ 1 0
25 NGC 1035 EmG 02 39 29.136 -08 08 01.11   12.89   13.0 12.6 ~ 178 1
26 [RCP2021b] 15 LSB 02 39 38.5 -07 28 25           ~ 1 0
27 SDSS J023939.36-081342.0 LSB 02 39 39.36120 -08 13 42.0096           ~ 4 0
28 [RCP2021b] 17 LSB 02 39 52.7 -08 12 44           ~ 3 0
29 [CVD2018] NGC1052-DF1 LSB 02 40 04.7 -08 26 46     18.2   17.9 ~ 5 0
30 [RCP2021b] 19 LSB 02 40 08.2 -07 56 50           ~ 1 0
31 [RCP2021b] 20 LSB 02 40 19.7 -07 59 05           ~ 1 0
32 NGC 1042 EmG 02 40 23.9724818544 -08 26 00.736256616 11.47 11.56 11.02 11.7 11.4 ~ 260 1
33 [RCP2021b] 21 LSB 02 40 28.8 -08 14 36           ~ 3 0
34 UGCA 38 EmG 02 40 30.5769081216 -06 06 12.943947744   16.43   14.9 15.0 ~ 19 0
35 NGC 1047 GiP 02 40 32.8417000656 -08 08 51.635714460   14.50       ~ 62 1
36 [RCP2021b] 22 LSB 02 40 36.0 -09 29 52           ~ 1 0
37 [RCP2021b] 23 LSB 02 40 41.3 -11 04 58           ~ 1 0
38 [CVD2018] NGC1052-DF8 LSB 02 40 45.5 -07 38 49     19.3   18.9 ~ 2 0
39 [RCP2021b] 25 LSB 02 40 54.6 -05 19 48           ~ 1 0
40 NGC 1051 LSB 02 41 02.4963574872 -06 56 09.116016540   13.0   13.2 13.0 ~ 52 1
41 NGC 1052 Sy2 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1299 2
42 NAME NGC 1052 Group GrG 02 41 09.3 -08 07 10           ~ 73 0
43 [RCP2021b] 26 LSB 02 41 09.5 -08 17 48           ~ 3 0
44 [RCP2021b] 27 LSB 02 41 15.0 -07 29 36           ~ 1 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           ~ 7 0
47 LEDA 1007217 AG? 02 41 35.145 -08 10 24.33   15.96   14.96   ~ 13 0
48 [RCP2021b] 28 LSB 02 41 41.2 -08 20 51           ~ 4 0
49 LEDA 3097693 LSB 02 41 46.80 -08 24 09.3     16.2   15.8 ~ 139 0
50 [RCP2021b] 30 LSB 02 41 47.4 -08 47 07           ~ 1 0
51 LEDA 10213 AG? 02 41 49.950 -07 55 30.05   15.35   14.66   ~ 18 1
52 [RCP2021b] 31 LSB 02 42 24.8 -09 26 54           ~ 1 0
53 [RCP2021b] 32 LSB 02 42 28.8 -08 22 36           ~ 3 0
54 [RCP2021b] 33 LSB 02 42 36.1 -08 02 33           ~ 1 0
55 WHI B0240-07 LSB 02 42 38.0 -07 20 17     16.2   16.0 ~ 4 0
56 LEDA 1017261 AG? 02 42 46.878 -07 32 31.55           ~ 10 0
57 [RCP2021b] 35 LSB 02 42 47.1 -07 46 20           ~ 1 0
58 [RCP2021b] 36 LSB 02 43 03.3 -08 00 50           ~ 1 0
59 [RCP2021b] 37 LSB 02 43 28.8 -07 52 24           ~ 1 0
60 [RCP2021b] 38 LSB 02 43 43.3 -06 55 19           ~ 1 0
61 MCG-01-08-001 AG? 02 43 43.7633 -06 39 08.257   14.4   14.7 15.0 ~ 20 1
62 [RCP2021b] 39 LSB 02 44 38.5 -07 10 35           ~ 1 0
63 [RCP2021b] 40 LSB 02 45 56.3 -07 38 59           ~ 1 0
64 NGC 1084 GiG 02 45 59.926 -07 34 43.10 11.22 11.59 10.73 10.55 11.1 ~ 368 2
65 [RCP2021b] 41 LSB 02 47 16.5 -08 17 32           ~ 1 0
66 SHOC 137 H2G 02 48 15.9460059552 -08 17 16.258401096           ~ 14 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 ~ 59 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 [RCP2021b] 42 LSB 02 52 50.2 -07 51 40           ~ 1 0
72 LEDA 4016901 AG? 02 53 28.641 -08 59 05.52   16.7   16.5 16.8 ~ 9 0
73 LEDA 976989 AG? 02 53 33.53 -10 32 08.5   16.27   15.54   ~ 7 0
74 NGC 1140 EmG 02 54 33.5271666624 -10 01 43.142143908 12.41 12.84 12.49 13.6 13.5 ~ 286 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 ~ 16 0
77 NAME M96 Group GrG 10 48 +13.3           ~ 314 0

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