2018MNRAS.479.3842K

Query : 2018MNRAS.479.3842K

2018MNRAS.479.3842K - Mon. Not. R. Astron. Soc., 479, 3842-3857 (2018/September-3)

Study of galaxies in the Eridanus void. Sample and oxygen abundances.

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

Abstract (from CDS):

We present a sample of 66 galaxies belonging to the equatorial part (Dec. = -7°, +7°) of the large so-called Eridanus void (after Fairall 1998). The void galaxies are selected as to be separated from the luminous galaxies (M_ B_ < M_ B_* +1), delineating the void, by more than 2 Mpc. Our main goal is to study systematically the evolutionary parameters of the void sample (metallicity and gas content) and to compare the void galaxy properties with their counterparts residing in denser environments. Besides the general galaxy parameters, compiled mainly from the literature, we present the results of dedicated observations to measure the oxygen abundance O/H in HII-regions of 23 void galaxies obtained with the 11-m SALT telescope (SAAO) and the 6-m BTA telescope (SAO), as well as the O/H estimates derived from the analysis of the SDSS DR12 spectra for three objects. We compiled all available data on O/H in 36 these void galaxies, including those for 11 galaxies available in the literature (for one object both SDSS and SALT spectra were used), and analyze this data in relation to galaxy luminosity (log (O/H) versus MB). Comparing them with the control sample of similar type galaxies from the Local Volume, we find clear evidence for a substantially lower average metallicity of the Eridanus void galaxies. This result matches well the conclusions of our recent similar study for galaxies in the Lynx-Cancer void.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

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

Simbad objects: 78

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Number of rows : 78
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 J000224.09-013147.8 G 00 02 24.10601 -01 31 47.8519           ~ 1 0
2 SDSS J000421.60+002536.2 EmG 00 04 21.60156 +00 25 36.1870           ~ 5 0
3 LEDA 5059815 G 00 06 34.279 +15 30 39.04           ~ 32 0
4 SDSS J001340.76-010641.3 G 00 13 40.76289 -01 06 41.3661           ~ 2 0
5 AGC 103435 LSB 00 15 20.679 +01 04 36.99           ~ 19 0
6 SDSS J001628.25+010801.9 G 00 16 28.25452 +01 08 02.0130           ~ 5 0
7 LEDA 1574 AG? 00 25 07.42 +00 18 45.7   18       ~ 10 0
8 Z 383-20 H2G 00 27 51.551 +03 29 22.89   15.5       ~ 37 0
9 LEDA 1075005 EmG 00 27 55.29 -03 11 00.9   15.57   15.07   ~ 9 0
10 Z 409-18 H2G 00 28 26.606 +05 00 15.96   15.3       ~ 33 0
11 MCG+00-02-058 LSB 00 29 48.02 +01 51 17.6   15       ~ 11 0
12 MCG+00-02-062 AG? 00 30 04.10 +03 30 47.0   18       ~ 38 0
13 Z 409-29 AG? 00 31 26.0536529448 +06 12 24.245502732   14.3       ~ 66 0
14 LEDA 135618 LSB 00 31 45.35 +02 42 53.3   17.9       ~ 13 0
15 MCG+00-02-066 AG? 00 32 30.93 +02 34 27.0   16.5       ~ 39 0
16 MCG+00-02-070 H2G 00 33 22.09 -01 07 16.7   15.1   15.1 15.0 ~ 32 0
17 2SLAQ J003720.41-004043.0 G 00 37 20.418 -00 40 43.00           ~ 2 0
18 [RT2017] UDG-B4 LSB 00 39 33 +01 06.9           ~ 4 0
19 LEDA 1103998 AG? 00 41 39.73 -02 00 42.3           ~ 9 0
20 Z 410-2 AG? 00 44 48.4070186160 +05 08 08.703243744   15.2       ~ 17 0
21 LEDA 1089041 GiC 00 47 17.82 -02 32 41.0   18.3       ~ 5 0
22 IC 52 H2G 00 48 23.764 +04 05 30.73   15.4       ~ 33 0
23 MCG+00-03-017 GiC 00 51 49.90 +03 06 21.0   16.0       ~ 17 0
24 LEDA 3040 GiC 00 51 58.73 -01 40 18.7   18       ~ 10 0
25 Z 384-16 Sy1 00 51 59.620 -00 29 12.22   15.8   15.1 15.8 ~ 51 0
26 MCG-01-03-027 GiC 00 52 17.23 -03 57 59.8   16.94   14.67 15.3 ~ 37 0
27 Z 384-19 GiC 00 52 52.520 +01 12 49.61   15.7       ~ 15 0
28 LEDA 3080241 AG? 00 55 53.66 -06 01 20.0   16.43   15.38   ~ 8 0
29 2MASS J00570350-0124434 AG? 00 57 03.501 -01 24 42.60           ~ 4 0
30 SDSS J005712.60-002157.6 EmG 00 57 12.603 -00 21 57.67           ~ 6 0
31 MCG-01-03-040 EmG 00 57 28.754 -04 09 33.89   15.0       ~ 25 0
32 LEDA 1177707 GiC 00 57 56.586 +00 52 09.21           ~ 16 0
33 MCG-01-03-072 GiC 01 02 22.91 -04 30 30.9   14.5       ~ 9 0
34 LEDA 1077422 AG? 01 03 09.691 -03 02 55.69   15.82   15.17   ~ 6 0
35 MCG-01-03-079 EmG 01 03 10.4390735544 -03 36 36.370126908   14.6   14.6 14.3 ~ 35 0
36 6dFGS gJ010518.6-042430 GiC 01 05 18.59 -04 24 29.7   16.09   16.41 15.9 ~ 10 0
37 6dFGS gJ010555.5-025136 AG? 01 05 55.46 -02 51 36.0   16.22   16.59   ~ 4 0
38 SDSS J010603.17-025052.1 G 01 06 03.17016 -02 50 52.1736           ~ 1 0
39 Z 384-74 EmG 01 06 30.984 -02 11 47.89   14.4       ~ 13 0
40 Z 385-2 LSB 01 07 46.4168514120 +01 03 49.112609292 15.73 15.26 14.84 14.67 15.6 ~ 59 0
41 Z 385-5 GiC 01 08 37.00344 +01 38 28.3596   14.2   14.1 14.2 ~ 89 0
42 LEDA 1185205 H2G 01 09 07.938 +01 07 15.70           ~ 17 0
43 MCG-01-04-005 LSB 01 09 41.46 -02 15 59.3   14.8   14.7 14.7 ~ 42 0
44 SDSS J011003.43-000033.1 G 01 10 03.43128 -00 00 33.1920           ~ 1 0
45 LEDA 135629 LSB 01 12 50.69 +01 02 48.8   16.1       ~ 7 0
46 NGC 428 AGN 01 12 55.709 +00 58 53.69   12.1   12.0 12.1 ~ 247 0
47 MCG+00-04-043 LSB 01 13 40.450 +00 52 39.16   17       ~ 65 0
48 MCG+00-04-049 Sy1 01 14 20.338 +00 55 00.07   20.47 20.12     ~ 18 0
49 NGC 437 GiG 01 14 22.2834160200 +05 55 37.034387184   14.00       ~ 27 0
50 NGC 448 EmG 01 15 16.5193587096 -01 37 34.484096784   13.2       ~ 112 0
51 LEDA 90540 GiC 01 21 23.80 -01 51 46.0   16.84       ~ 32 0
52 UM 323A EmO 01 26 14 -00 24.4           ~ 3 0
53 Z 411-57 GiC 01 26 23.561 +06 16 40.57   15.20       ~ 53 0
54 6dFGS gJ012646.5-003845 H2G 01 26 46.6028219232 -00 38 46.165233696   17   15.46   ~ 58 0
55 UGC 1102 IG 01 32 29.18 +04 35 42.1   14.6       ~ 30 0
56 MCG+01-05-003 AG? 01 32 39.90 +04 38 30.0   17       ~ 17 0
57 LEDA 1140244 GiC 01 37 08.073 -00 33 53.77           ~ 11 0
58 SDSS J013918.59-002730.4 AG? 01 39 18.59616 -00 27 30.4380           ~ 2 0
59 SDSS J014248.12+001814.6 AG? 01 42 48.12575 +00 18 14.6344           ~ 2 0
60 CAIRNS J014259.31+002136.5 GiC 01 42 59.308 +00 21 36.42           ~ 6 0
61 SDSS J014313.36-000250.9 AG? 01 43 13.35984 -00 02 50.8164           ~ 4 0
62 LEDA 4015419 LSB 09 26 10.3 +33 43 15           ~ 34 0
63 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
64 Z 153-5 AG? 09 56 46.047 +28 49 43.77 14.82 14.74 14.59 14.55 26.509 ~ 252 1
65 Z 381-22 EmG 23 40 20.7272667936 +01 14 44.483740135   15.20   14.8 14.6 ~ 42 0
66 LEDA 1074374 AG? 23 43 54.8 -03 13 33           ~ 6 0
67 GALEXASC J234448.27-020653.4 AG? 23 44 48.21 -02 06 53.5           ~ 6 0
68 MCG+00-60-042 LSB 23 45 19.20427 -01 16 26.0628   16.0       ~ 15 0
69 SDSS J234721.47+012625.4 G 23 47 21.46992 +01 26 25.4220           ~ 1 0
70 AGC 630890 EmG 23 54 37.314 -00 05 01.60           ~ 7 0
71 MCG-01-01-003 AG? 23 55 26.9682085200 -06 14 14.938516284   15   14.46   ~ 13 0
72 LEDA 1202704 G 23 56 26.9 +01 41 17           ~ 3 0
73 Z 382-7 AG? 23 56 47.527 +01 21 18.36   14.70   14.1 13.6 ~ 100 0
74 AGC 336990 AG? 23 58 07.15 +04 49 07.3           ~ 7 0
75 LEDA 1235665 AG? 23 59 13.2307 +02 43 25.094   18.0       ~ 15 0
76 NAME Local Group GrG ~ ~           ~ 9325 0
77 NAME Eridanus Void vid ~ ~           ~ 33 0
78 NAME Aquarius Region reg ~ ~           ~ 37 0

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