2023MNRAS.523.3848C

Query : 2023MNRAS.523.3848C

2023MNRAS.523.3848C - Mon. Not. R. Astron. Soc., 523, 3848-3862 (2023/August-2)

GMRT H I mapping of mid-infrared bright blue compact dwarf galaxies W1016+3754 and W2326+0608.

CHANDOLA Y., TSAI C.W., LI D., SENGUPTA C., MA Y.Z. and ZUO P.

Abstract (from CDS):

We present the results from deep 21 cm H I mapping of two nearby Blue Compact Dwarf Galaxies (BCDGs), W1016+3754 and W2326+0608, using the Giant Metrewave Radio Telescope (GMRT). These BCDGs are bright in mid-infrared data and undergoing active star formation. With the GMRT observations, we investigate the role of cold neutral gas as the fuel resource of the current intensive star formation activity. Star formation in these galaxies is likely to be due to the infall of H I gas triggered by gravitational perturbation from nearby galaxies. The BCDG W2326+0608 and nearby galaxy SDSS J232603.86+060835.8 share a common H I envelope. We find star formation takes place in the high H I column density gas (≳1021 cm–2) regions for both BCDGs. The recent starburst and infall of metal-free gas have kept the metallicity low for the BCDG W1016+3754. The metallicity for W2326+0608 is higher, possibly due to tidal interaction with the nearby galaxy SDSS J232603.86+060835.8.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: starburst - galaxies: star formation - radio lines: galaxies

Simbad objects: 17

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Number of rows : 17
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 ICRF J002225.4+001456 Sy2 00 22 25.42584644 +00 14 56.1630395   21.1       ~ 125 1
2 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
3 SBSG 0335-052 AGN 03 37 44.06 -05 02 40.2     16.65     ~ 500 1
4 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1573 1
5 SDSS J080103.92+264054.3 bCG 08 01 03.92511 +26 40 54.3352   18.18       ~ 4 0
6 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
7 LEDA 2108569 AG? 10 15 47.879 +37 44 58.48           ~ 11 0
8 Z 183-8 EmG 10 16 22.211 +37 46 45.37   14.60       ~ 69 0
9 LEDA 29998 AGN 10 16 24.516 +37 54 45.96   16.5       ~ 62 0
10 ICRF J103507.0+562846 Sy2 10 35 07.03998083 +56 28 46.7956247   20.2 21.244 20.200   ~ 205 1
11 LEDA 37102 Sy1 11 51 33.3537570144 -02 22 21.893502576   17       ~ 179 0
12 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
13 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
14 WISEP J170233.53+180306.4 MIR 17 02 33.534 +18 03 06.44   18.39       ~ 9 0
15 ICRF J221237.9+015251 Sy2 22 12 37.97355904 +01 52 51.1910560     21.7     ~ 89 1
16 SDSS J232603.58+060814.4 G 23 26 03.58833 +06 08 14.4729           ~ 1 0
17 SDSS J232603.86+060835.8 G 23 26 03.87837 +06 08 35.8621           ~ 3 0

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