2026ApJS..282...16L

Query : 2026ApJS..282...16L

2026ApJS..282...16L - Astrophys. J., Suppl. Ser., 282, 16 (2026/January-0)

Dwarf Galaxy Integral-field Survey (DGIS): Survey Overview and the Results of a Global Mass-Metallicity Relation.

LI X., SHI Y., BIAN F., YU X., ZHENG Z., LI S., CHEN Y., GU Q., WANG J., MAO S., LI X.-D., ZHANG H.-X., ZHU K. and ZHANG Z.-Y.

Abstract (from CDS):

Low-mass galaxies are the building blocks of massive galaxies in the framework of hierarchical structure formation. To enable detailed studies of galactic ecosystems in dwarf galaxies by spatially resolving different galactic components, we have carried out the Dwarf Galaxy Integral-field Survey (DGIS). This survey aims to acquire observations with spatial resolutions as high as 10-100 pc while maintaining reasonably high signal-to-noise ratios with the Very Large Telescope/MUSE and ANU-2.3 m/WiFeS. The whole sample will be composed of 63 dwarf galaxies with M* < 109M⊙, selected from the Spitzer Local Volume Legacy survey. The overall scientific goals include studying baryonic cycles in dwarf galaxies, searching for off-nuclear (intermediate)-massive black holes, and quantifying the inner density profiles of dark matter. In this work, we describe the sample selection, data reduction, and high-level data products. By integrating the spectra over the field of view for each galaxy, we obtained the integrated gas-phase metallicity and discussed its dependence on stellar mass and star formation rate (SFR). We find that the overall relation between metallicity and stellar mass of our DGIS nearly follows the extrapolation from the higher mass end. Its dispersion does not decrease by invoking the dependence on SFR.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dwarf galaxies - Interstellar medium - Astronomy data reduction - Spectroscopy

Simbad objects: 68

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Number of rows : 68
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-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NGC 59 EmG 00 15 25.126 -21 26 39.68 14.01 13.21 12.59 12.31   ~ 111 0
3 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 120 1
4 ESO 294-10 AG? 00 26 33.37 -41 51 19.1   15.76 15.3 14.97   ~ 122 2
5 IC 1574 AG? 00 43 03.82 -22 14 48.8 15.25 14.73 14.35 14.24 14.2 ~ 137 1
6 ESO 540-30 AG? 00 49 20.96 -18 04 31.5   16.45   15.33   ~ 92 1
7 MCG-04-03-019 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 144 1
8 ESO 540-32 LSB 00 50 24.5 -19 54 23 17.44 16.54 16.01 15.70   ~ 79 1
9 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
10 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
11 Z 458-20 AG? 01 07 23.0321 +16 41 00.988 15.01 14.55 14.07     ~ 148 0
12 Z 385-2 LSB 01 07 46.4168514120 +01 03 49.112609292 15.73 15.26 14.84 14.67 15.6 ~ 59 0
13 Z 436-33 AG? 01 21 18.90 +12 24 43.0 15.36 14.82 14.36 12.87   ~ 112 0
14 Z 459-60 AG? 01 28 47.232 +16 41 16.71 16.06 15.45 15.10 15.23   ~ 47 0
15 Z 460-6 AG? 01 32 42.5190557016 +18 19 01.514434548 15.03 14.56 14.13 13.89   ~ 101 0
16 NGC 625 AGN 01 35 04.632 -41 26 10.32 12.37 11.78 11.25 11.03 11.5 ~ 312 2
17 UGC 1176 GiP 01 40 10.39 +15 54 18.6 14.60 14.38 14.02 13.69   ~ 108 0
18 Wolf 1065 PM* 01 42 57.7349624428 +17 08 03.581061817   13.43   12.0   K3 26 0
19 MCG-07-04-032 AG? 01 45 03.74 -43 35 52.9 13.45 12.92 12.63 12.51 12.8 ~ 152 1
20 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
21 ESO 115-21 G 02 37 49.563 -61 19 53.77 14.14 13.52 13.13 12.95   ~ 100 1
22 ESO 154-23 AG? 02 56 50.38 -54 34 17.1   12.63   12.18 12.5 ~ 123 0
23 NGC 1311 Sy2 03 20 06.946 -52 11 07.76 13.89 13.35 12.93 12.75 13.1 ~ 136 0
24 Z 464-15 LSB 03 24 07.257 +17 45 10.94 15.09 14.58 14.11 13.88   ~ 59 0
25 IC 1959 GiG 03 33 12.576 -50 24 51.13 13.52 13.32 12.96 12.75 12.7 ~ 119 0
26 NGC 1510 GiP 04 03 32.640 -43 24 00.58 14.23 13.63 13.24 13.09   ~ 201 1
27 NGC 1522 EmG 04 06 07.900 -52 40 05.91 14.53 14.16 13.78 13.62 14.0 ~ 70 0
28 MCG-04-11-001 EmG 04 12 41.119 -23 09 31.99 14.91 14.23 13.61 13.32 13.8 ~ 66 0
29 ESO 158-3 AG? 04 46 17.28 -57 20 37.6 14.32 13.96 13.49 13.29   ~ 28 0
30 ESO 119-16 AG? 04 51 29.07 -61 38 59.8 15.28 14.98 14.58 14.38 14.0 ~ 52 0
31 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
32 MCG-04-12-041 AG? 05 03 19.69 -25 25 22.5 14.89 14.41 14.03 13.87 14.0 ~ 65 0
33 NGC 1800 EmG 05 06 25.737 -31 57 15.21 13.51 13.19 12.70 12.48 12.9 ~ 185 1
34 MCG-06-12-010 AG? 05 11 59.33 -32 58 21.4 13.66 13.05 12.67 12.55 12.7 ~ 65 0
35 Z 35-7 AG? 09 34 44.716 +06 25 31.76   15.0       ~ 39 0
36 IC 559 AG? 09 44 43.816 +09 36 57.37   15.0       ~ 61 0
37 UGC 5288 PaG 09 51 17.241 +07 49 32.05 15.07 14.65 14.18 13.99   ~ 95 0
38 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
39 MCG-01-26-012 GiG 10 02 36.00 -06 00 49.0 15.70 15.16 14.74 14.55 14.3 ~ 82 0
40 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
41 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
42 Z 64-68 AG? 10 07 20.182 +10 21 40.16   13.78   13.24   ~ 125 0
43 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
44 Z 9-95 EmG 10 39 25.193 +01 43 09.08 15.68 15.07 14.59 14.37 14.4 ~ 58 0
45 NGC 3377A GiP 10 47 22.4012897592 +14 04 16.697296020 14.17 14.31 13.61 13.51   ~ 150 1
46 Z 38-22 EmG 10 49 07.548 +06 55 02.61 15.41 14.86 14.21 13.93   ~ 79 0
47 Z 11-98 EmG 11 27 12.2333953944 -00 59 41.002508328   14.973   14.335 14.7 ~ 45 0
48 ESO 321-14 AG? 12 13 48.8792 -38 14 00.250 16.32 15.70 15.35 15.20 15.2 ~ 92 0
49 MCG-03-32-003 Sy1 12 19 59.528 -17 23 30.99   15   13.79   ~ 35 0
50 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
51 MCG-03-33-027 GiP 13 02 14.39 -17 14 15.1 15.59 14.82 14.34 14.23   ~ 79 0
52 MCG-03-33-030 GiP 13 03 16.736 -17 25 22.91 13.98 13.42 13.09 12.96 13.3 ~ 135 0
53 MCG-03-34-002 EmG 13 07 56.657 -16 41 20.75   14.7   13.99 14.2 ~ 40 0
54 IC 4247 EmG 13 26 44.43 -30 21 44.7 15.34 14.67 14.28 14.13 14.53 ~ 99 0
55 ESO 444-84 GiC 13 37 19.99 -28 02 42.0 16.04 15.34 15.05 15.05 14.9 ~ 133 1
56 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
57 NGC 5264 GiG 13 41 36.683 -29 54 47.25 13.86 12.96 12.39 12.14 15.83 ~ 164 1
58 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 89 0
59 IC 4951 EmG 20 09 31.77 -61 51 01.7 14.74 14.23 13.84 13.68 14.0 ~ 73 0
60 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
61 NGC 7064 AG? 21 29 02.34 -52 46 02.5 13.51 13.04 12.69 12.55 12.9 ~ 83 0
62 IC 5256 EmG 22 49 45.79107 -68 41 26.5090           ~ 31 0
63 MCG-05-55-012 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 163 0
64 MCG-06-51-005 GiG 23 26 56.21 -37 20 48.9 14.90 14.69 14.35 14.19 14.2 ~ 74 0
65 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
66 MCG-05-56-001 G 23 43 45.549 -31 57 24.37 14.55 14.03 13.73 13.63   ~ 162 1
67 ESO 149-3 AG? 23 52 02.15 -52 34 33.9 15.48 15.10 14.89 14.84 14.9 ~ 88 0
68 NAME Local Group GrG ~ ~           ~ 9325 0

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