2021MNRAS.500.3802H

Query : 2021MNRAS.500.3802H

2021MNRAS.500.3802H - Mon. Not. R. Astron. Soc., 500, 3802-3820 (2021/January-3)

Centrally concentrated molecular gas driving galactic-scale ionized gas outflows in star-forming galaxies.

HOGARTH L.M., SAINTONGE A., CORTESE L., DAVIS T.A., CROOM S.M., BLAND-HAWTHORN J., BROUGH S., BRYANT J.J., CATINELLA B., FLETCHER T.J., GROVES B., LAWRENCE J.S., LOPEZ-SANCHEZ A.R., OWERS M.S., RICHARDS S.N., ROBERTS-BORSANI G.W., TAYLOR E.N., VAN DE SANDE J. and SCOTT N.

Abstract (from CDS):

We perform a joint analysis of high spatial resolution molecular gas and star-formation rate (SFR) maps in main-sequence star-forming galaxies experiencing galactic-scale outflows of ionized gas. Our aim is to understand the mechanism that determines which galaxies are able to launch these intense winds. We observed CO(1-0) at 1-arcsec resolution with ALMA in 16 edge-on galaxies, which also have 2-arcsec spatial-resolution optical integral field observations from the SAMI Galaxy Survey. Half the galaxies in the sample were previously identified as harbouring intense and large-scale outflows of ionized gas ('outflow types') and the rest serve as control galaxies. The data set is complemented by integrated CO(1-0) observations from the IRAM 30-m telescope to probe the total molecular gas reservoirs. We find that the galaxies powering outflows do not possess significantly different global gas fractions or star-formation efficiencies when compared with a control sample. However, the ALMA maps reveal that the molecular gas in the outflow-type galaxies is distributed more centrally than in the control galaxies. For our outflow-type objects, molecular gas and star-formation are largely confined within their inner effective radius (reff), whereas in the control sample, the distribution is more diffuse, extending far beyond reff. We infer that outflows in normal star-forming galaxies may be caused by dynamical mechanisms that drive molecular gas into their central regions, which can result in locally enhanced gas surface density and star-formation.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: star formation - submillimetre: galaxies - galaxies: starburst - galaxies: ISM - galaxies: evolution

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 LEDA 1199030 G 08 37 34.8707847216 +01 34 26.092837524           ~ 10 0
2 LEDA 1230753 G 08 46 54.2922565656 +02 33 36.221172264           ~ 21 0
3 2MASX J08482826+0123501 LIN 08 48 28.2633531384 +01 23 50.093293020   15.7       ~ 24 0
4 LEDA 1223995 G 08 50 57.172 +02 20 46.22           ~ 13 0
5 LEDA 1184424 G 08 54 43.2173889192 +01 05 45.351800520           ~ 13 0
6 LEDA 1153919 G 08 58 05.610 -00 01 16.14           ~ 14 0
7 2MASX J08582861+0001246 Sy2 08 58 28.5922639728 +00 01 24.531135960   17.15 16.60     ~ 33 0
8 LEDA 153343 G 08 58 42.422 +00 11 29.16           ~ 16 0
9 NPM1G +00.0239 rG 09 00 05.0433499416 +00 04 46.769547972           ~ 23 0
10 SDSS J090055.36+021341.4 G 09 00 55.3638855672 +02 13 41.526843204           ~ 8 0
11 LEDA 26256 EmG 09 17 45.303 +01 03 19.60   15.70       ~ 33 0
12 LEDA 1171449 GiC 09 19 55.943 +00 38 28.64           ~ 11 0
13 LEDA 1219279 G 09 21 10.422 +02 12 04.44           ~ 15 0
14 LEDA 26546 G 09 22 40.9197075744 +02 06 41.624679960           ~ 26 0
15 Z 12-53 G 11 40 06.2093118048 -00 54 04.996396368   15.1   13.965   ~ 28 0
16 Z 13-27 AG? 11 59 27.176 -01 09 17.72   16.219   15.309   ~ 18 0
17 Z 13-119 EmG 12 17 52.8740655552 -00 39 26.382327984   15.2       ~ 29 0
18 LEDA 1139914 G 14 10 14.254 -00 34 42.77   17.007   16.233   ~ 19 0
19 LEDA 1126389 G 14 10 22.038 -01 06 54.03   17.527   16.346   ~ 13 0
20 LEDA 1201967 G 14 13 18.959 +01 39 50.96           ~ 12 0
21 LEDA 1166512 G 14 17 54.1745890632 +00 27 41.084842176   18.050   16.590   ~ 10 0
22 2MASX J14180405+0016257 G 14 18 04.0851908448 +00 16 25.766345316   17.40       ~ 13 0
23 2MASX J14185739+0021557 LIN 14 18 57.3673297632 +00 21 56.202682644   16.765   15.623   ~ 12 0
24 LEDA 1181700 G 14 23 36.2647195872 +01 00 27.448809804   17.304   16.120   ~ 18 0
25 LEDA 1201169 G 14 28 04.410 +01 38 20.63           ~ 14 0
26 LEDA 1164888 G 14 29 26.2615887912 +00 23 51.339399684   17.472   16.241   ~ 14 0
27 LEDA 1185074 Sy1 14 29 32.541 +01 07 01.74     18.84     ~ 18 0
28 FIRST J142946.0-000908 rG 14 29 46.058 -00 09 08.62   15.7       ~ 27 0
29 LEDA 1197902 G 14 30 04.837 +01 32 12.64           ~ 15 0
30 LEDA 1163245 G 14 30 12.4845818112 +00 20 00.849601608   16.983   16.098   ~ 15 0
31 LEDA 1160254 G 14 32 12.281 +00 13 23.68   17.44       ~ 17 0
32 LEDA 1110031 G 14 46 58.7647998240 -01 47 19.989237408   17.862   16.913   ~ 12 0
33 LEDA 160196 LIN 14 51 02.9931374112 -00 31 37.522979148   16.898   15.699   ~ 20 0
34 LEDA 1142873 G 14 51 12.4137695016 -00 27 24.869411280   16.70   15.54   ~ 14 0
35 LEDA 1162022 G 14 51 46.263 +00 17 23.09           ~ 12 0

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