2020MNRAS.492.1078P

Query : 2020MNRAS.492.1078P

2020MNRAS.492.1078P - Mon. Not. R. Astron. Soc., 492, 1078-1090 (2020/February-2)

XMP gas-rich dwarfs in nearby voids: candidate selection.

PUSTILNIK S.A., EGOROVA E.S., PEREPELITSYNA Y.A. and KNIAZEV A.Y.

Abstract (from CDS):

We introduce a project aimed at systematically searching for eXtremely Metal-Poor (XMP) very gas-rich blue dwarfs in voids in the nearby Universe. Several such galaxies were first identified in the course of an unbiased study of the galaxy population in the nearby Lynx-Cancer void. These very rare and unusual galaxies appear to be the best proxies for the so-called Very Young Galaxies defined recently in the model simulations by Tweed et al. (2018). We discuss the main properties of 10 prototype objects residing in nearby voids and formulate criteria to search for similar dwarfs in other voids. The recently published sample of 1354 Nearby Void Galaxies is used to identify a subsample of 60 void dwarf XMP candidates. We provide a list of these XMP candidates with their main parameters and finding charts. These candidates are the subjects of subsequent spectral, photometric, and H I studies in the accompanying papers. Looking ahead, with reference to the submitted accompanying papers, we find that this study results in the discovery of many new XMP dwarfs with 12+log (O/H) ∼ 7.0-7.3 dex.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: abundances - galaxies: dwarf - galaxies: evolution - galaxies: photometry - large-scale structure of Universe

Simbad objects: 67

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Number of rows : 67
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 SDSS J000021.21+310120.8 G 00 00 21.214 +31 01 20.86           ~ 13 0
2 LEDA 83 G 00 01 06.53 +32 22 41.1   17.0       ~ 15 0
3 LEDA 389 AG? 00 05 36.07 -41 28 52.4           ~ 6 0
4 LEDA 5059815 G 00 06 34.279 +15 30 39.04           ~ 32 0
5 2dFGRS TGS278Z195 G 00 09 36.2 -28 51 38   19.261   18.961   ~ 5 0
6 AGC 103722 LSB 00 14 45.99936 +10 48 46.9620           ~ 29 0
7 AGC 103435 LSB 00 15 20.679 +01 04 36.99           ~ 19 0
8 LEDA 4668290 AG? 00 20 41.3861 +08 36 56.600           ~ 9 0
9 LEDA 493444 G 01 07 18.0 -47 56 33           ~ 4 0
10 LEDA 1190331 G 01 09 10.1 +01 17 28           ~ 7 0
11 MCG+00-04-043 LSB 01 13 40.450 +00 52 39.16   17       ~ 65 0
12 LEDA 5072711 G 01 19 11.700 +11 07 18.22           ~ 26 0
13 SDSS J023122.17+254242.0 G 02 31 22.178 +25 42 42.04           ~ 10 0
14 LEDA 9994 AG? 02 38 16.694 +29 54 22.81   16.5       ~ 17 0
15 LEDA 2807110 LSB 03 03 05.8 +33 41 40   16.7       ~ 32 0
16 LEDA 1166738 G 03 06 46.836 +00 28 10.29           ~ 8 0
17 LEDA 13294 EmG 03 35 56.84 -45 11 29.2   16.03 15.81     ~ 20 0
18 SBSG 0335-052B G 03 37 44.04 -05 02 40.2   16.77 16.65   16.79 ~ 220 1
19 ESO 121-20 AG? 06 15 54.19 -57 43 31.7   15.85   15.49 15.6 ~ 63 1
20 LEDA 385975 G 06 16 08.9 -57 45 52           ~ 17 1
21 HIPASS J0653-73 AG? 06 53 51.8264 -73 42 26.532           ~ 10 0
22 UGC 3672 AG? 07 06 27.336 +30 19 23.61   17       ~ 43 0
23 NAME J0723+36 system GrG 07 23 07.40 +36 22 41.0           ~ 5 0
24 SDSS J072313.46+362213.0 G 07 23 13.464 +36 22 13.06   19.31       ~ 10 0
25 SDSS J072320.32+362436.7 G 07 23 20.324 +36 24 36.71           ~ 2 0
26 SDSS J072320.57+362440.8 G 07 23 20.570 +36 24 40.86           ~ 6 0
27 LEDA 5060076 AG? 07 50 21.70 +07 47 40.0           ~ 30 0
28 SDSS J081152.12+473026.2 G 08 11 52.118 +47 30 26.25           ~ 41 0
29 SDSS J082137.12+041901.9 G 08 21 37.1576968176 +04 19 01.854787404           ~ 11 0
30 LEDA 4015419 LSB 09 26 10.3 +33 43 15           ~ 34 0
31 SDSS J092811.26+073236.6 AG? 09 28 11.265 +07 32 36.65           ~ 9 0
32 NAME Zwicky's Flare HII 09 34 00.0 +55 14 25           ~ 25 0
33 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
34 UGC 5186 AG? 09 42 58.664 +33 15 56.10   16.5       ~ 52 0
35 NAME Leoncino Dwarf Galaxy bCG 09 43 32.356 +33 26 57.65           ~ 58 0
36 Z 210-34 H2G 09 47 47.6336764824 +39 05 02.934294540   15.1       ~ 32 0
37 SDSS J094758.45+390510.1 AG? 09 47 58.459 +39 05 10.12           ~ 9 0
38 LEDA 1314481 AG? 09 48 05.927 +07 07 41.15           ~ 21 0
39 Z 153-5 AG? 09 56 46.047 +28 49 43.77 14.82 14.74 14.59 14.55 26.509 ~ 252 1
40 LEDA 1230703 AG? 10 04 25.076 +02 33 31.27           ~ 13 0
41 LEDA 1178576 AG? 10 21 38.844 +00 54 00.57   17.333   16.872   ~ 19 0
42 NAME Leo P BiC 10 21 45.123 +18 05 16.89           ~ 268 0
43 AGC 208397 BiC 10 38 58.069 +03 52 26.90           ~ 16 0
44 NAME Coma P G 12 32 10.30 +20 25 24.0           ~ 38 0
45 SDSS J123415.69+390116.4 bCG 12 34 15.69576 +39 01 16.4136           ~ 21 0
46 LEDA 44681 G 12 59 55.8 -19 24 42           ~ 23 0
47 [KK98a] 130414.8+181608 G 13 06 42.4 +18 00 07           ~ 7 0
48 LEDA 4365303 AG? 13 19 52.917 +13 48 25.53           ~ 16 0
49 LEDA 135827 LSB 13 28 11.832 +02 16 55.94   16.3       ~ 24 0
50 SDSS J134509.70+272011.0 G 13 45 09.705 +27 20 11.08           ~ 10 0
51 LEDA 4419943 AG? 14 30 48.670 +07 09 25.84           ~ 14 0
52 MCG+07-30-055 H2G 14 44 12.8032800372 +42 37 43.773570223   16.0       ~ 92 0
53 SDSS J144449.71+424254.1 G 14 44 49.71072 +42 42 54.1044           ~ 3 0
54 LEDA 2081790 AG? 14 47 44.555 +36 30 18.98           ~ 13 0
55 SDSS J144950.70+095630.0 AG? 14 49 50.704 +09 56 30.07           ~ 8 0
56 SDSS J152255.54+420158.2 AG? 15 22 55.543 +42 01 58.29           ~ 5 0
57 LEDA 4007524 AG? 17 05 17.3542595592 +35 52 22.163560320           ~ 8 0
58 HIPASS J1738-57 AG? 17 38 42.90 -57 15 25.3   16.6   16.3 16.4 ~ 7 0
59 ESO 461-36 G 20 03 57.4 -31 40 53   17.06   16.2 16.1 ~ 73 1
60 LEDA 1133627 AG? 21 03 47.250 -00 49 49.62           ~ 12 0
61 LEDA 1139658 G 21 04 55.310 -00 35 22.38           ~ 33 0
62 SDSS J213902.89-073443.3 AG? 21 39 02.897 -07 34 43.33           ~ 4 0
63 AGC 321307 AG? 22 14 04.70 +25 40 52.0           ~ 10 0
64 ESO 238-5 AG? 22 22 30.4713 -48 24 22.941   15.0   14.9 15.4 ~ 44 0
65 AGC 332123 LSB 23 54 19.392 +10 56 48.01           ~ 10 0
66 NAME Local Group GrG ~ ~           ~ 9325 0
67 NAME Eridanus Void vid ~ ~           ~ 33 0

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