2023MNRAS.518.5893K

Query : 2023MNRAS.518.5893K

2023MNRAS.518.5893K - Mon. Not. R. Astron. Soc., 518, 5893-5903 (2023/February-1)

Peekaboo: the extremely metal poor dwarf galaxy HIPASS J1131-31.

KARACHENTSEV I.D., MAKAROVA L.N., KORIBALSKI B.S., ANAND G.S., TULLY R.B. and KNIAZEV A.Y.

Abstract (from CDS):

The dwarf irregular galaxy HIPASS J1131-31 was discovered as a source of HI emission at low redshift in such close proximity of a bright star that we call it Peekaboo. The galaxy resolves into stars in images with Hubble Space Telescope, leading to a distance estimate of 6.8 ± 0.7 Mpc. Spectral optical observations with the Southern African Large Telescope reveal HIPASS J1131-31 to be one of the most extremely metal-poor galaxies known with the gas-phase oxygen abundance 12 + log(O/H) = 6.99 ± 0.16 dex via the direct [O III] 4363 line method and 6.87 ± 0.07 dex from the two strong line empirical methods. The red giant branch of the system is tenuous compared with the prominence of the features of young populations in the colour-magnitude diagram, inviting speculation that star formation in the galaxy only began in the last few Gyr.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: individual: HIPASS J1131-31 - galaxies: irregular - galaxies: star formation

Simbad objects: 31

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Number of rows : 31
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 AGC 411446 G 01 10 03.7 -00 00 36           ~ 5 0
2 AGC 124629 G 02 56 05.6 +02 48 31           ~ 6 0
3 SDSS J081152.12+473026.2 G 08 11 52.118 +47 30 26.25           ~ 41 0
4 LEDA 4194405 G 09 15 25.831 +25 25 11.16           ~ 13 0
5 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
6 NAME Leoncino Dwarf Galaxy bCG 09 43 32.356 +33 26 57.65           ~ 58 0
7 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
8 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
9 Z 153-5 AG? 09 56 46.047 +28 49 43.77 14.82 14.74 14.59 14.55 26.509 ~ 252 1
10 NAME NGC 3109 Group GrG 09 59 35.2 -12 49 52           ~ 43 0
11 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
12 LEDA 5059698 AG? 10 29 06.402 +26 54 38.56           ~ 14 0
13 ESO 376-16 AG? 10 43 27.06 -37 02 33.4   15.44   14.64 15.1 ~ 29 0
14 ESO 318-13 AG? 10 47 41.60 -38 51 13.2   15.02   13.96   ~ 45 0
15 NGC 3621 Sy2 11 18 16.300 -32 48 45.36 10.10 9.44 9.56 8.07 10.1 ~ 661 3
16 CD-30 9279 PM* 11 31 34.6408328784 -31 40 13.558334232   11.035 10.332 9.98 9.608 ~ 13 0
17 LEDA 5060432 G 11 31 35.2 -31 40 20           ~ 11 0
18 LEDA 683190 AG? 11 33 11.1610 -32 57 44.830   16.3   16.2 17.2 ~ 21 0
19 ESO 320-14 AG? 11 37 53.24 -39 13 13.2   15.85   15.17 16.0 ~ 48 0
20 ESO 379-7 AG? 11 54 43.49 -33 33 36.0   16.60   15.50 15.3 ~ 61 0
21 ESO 379-24 AG? 12 04 57.1010 -35 44 29.693   16.58   15.92 15.8 ~ 27 0
22 ESO 321-14 AG? 12 13 48.8792 -38 14 00.250 16.32 15.70 15.35 15.20 15.2 ~ 92 0
23 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
24 M 104 LIN 12 39 59.43185902 -11 37 22.9961800 9.51 9.55 8.00 8.05   ~ 1465 2
25 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 274 0
26 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
27 LEDA 677373 G 13 37 01.0 -33 21 47           ~ 29 0
28 NAME Local Void vid 18 38 +18.0           ~ 234 0
29 NAME NGC 3621 Group ? ~ ~           ~ 2 0
30 NAME Local Group GrG ~ ~           ~ 9325 0
31 NAME Leo Spur reg ~ ~           ~ 36 0

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