2014A&A...562A..21C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST11:03:03

2014A&A...562A..21C - Astronomy and Astrophysics, volume 562A, 21-21 (2014/2-1)

Massive molecular outflows and evidence for AGN feedback from CO observations.

CICONE C., MAIOLINO R., STURM E., GRACIA-CARPIO J., FERUGLIO C., NERI R., AALTO S., DAVIES R., FIORE F., FISCHER J., GARCIA-BURILLO S., GONZALEZ-ALFONSO E., HAILEY-DUNSHEATH S., PICONCELLI E. and VEILLEUX S.

Abstract (from CDS):

We study the properties of massive, galactic-scale outflows of molecular gas and investigate their impact on galaxy evolution. We present new IRAM PdBI CO(1-0) observations of local ultra-luminous infrared galaxies (ULIRGs) and quasar-hosts: a clear signature of massive and energetic molecular outflows, extending on kpc scales, is found in the CO(1-0) kinematics of four out of seven sources, with measured outflow rates of several 100M/yr. We combine these new observations with data from the literature, and explore the nature and origin of massive molecular outflows within an extended sample of 19 local galaxies. We find that starburst-dominated galaxies have an outflow rate comparable to their star formation rate (SFR), or even higher by a factor of ∼2-4, implying that starbursts can indeed be effective in removing cold gas from galaxies. Nevertheless, our results suggest that the presence of an active galactic nucleus (AGN) can boost the outflow rate by a large factor, which is found to increase with the LAGN/Lbol ratio. The gas depletion time scales due to molecular outflows are anti-correlated with the presence and luminosity of an AGN in these galaxies, and range from a few hundred million years in starburst galaxies down to just a few million years in galaxies hosting powerful AGNs. In quasar hosts, the depletion time scales due to the outflow are much shorter than the depletion time scales due to star formation. We estimate the outflow kinetic power and find that, for galaxies hosting powerful AGNs, it corresponds to about 5% of the AGN luminosity, as expected by models of AGN feedback. Moreover, we find that momentum rates of about 20LAGN/c are common among the AGN-dominated sources in our sample. For ``pure'' starburst galaxies, our data tentatively support models in which outflows are mostly momentum-driven by the radiation pressure from young stars onto dusty clouds. Overall, our results indicate that, although starbursts are effective in powering massive molecular outflows, the presence of an AGN may strongly enhance such outflows, and therefore have a profound feedback effect on the evolution of galaxies by efficiently removing fuel for star formation, hence quenching star formation.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: evolution - quasars: general - radio lines: ISM - ISM: molecules - galaxies: ISM

VizieR on-line data: <Available at CDS (J/A+A/562/A21): list.dat fits/*>

Simbad objects: 21

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Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2931 2
2 Mrk 1502 Sy1 00 53 34.9326560879 +12 41 35.927159668   14.41 14.03     ~ 1036 1
3 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4093 2
4 NGC 1266 AGN 03 16 00.749 -02 25 38.53   14   12.46   ~ 256 1
5 NGC 1377 GiG 03 36 39.077 -20 54 08.14   13.38   12.12   ~ 194 0
6 NGC 2146 SBG 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 625 2
7 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 364 1
8 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5336 6
9 NGC 3256 IG 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 755 2
10 2XMM J105918.1+243234 LIN 10 59 18.128 +24 32 34.74   15.7       ~ 237 1
11 NGC 3628 GiP 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 751 3
12 SDSS J114816.64+525150.3 QSO 11 48 16.647 +52 51 50.31   25.73 25.04     ~ 391 0
13 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1781 3
14 Mrk 273 Sy2 13 44 42.070 +55 53 13.17   15.68 14.91     ~ 824 3
15 Mrk 876 Sy1 16 13 57.1791807197 +65 43 09.953889666   16.03 15.49     ~ 512 0
16 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1481 2
17 NGC 6764 LIN 19 08 16.348 +50 55 59.14   15.00 14.32     ~ 276 1
18 IC 5063 Sy2 20 52 02.329 -57 04 07.60   12.92 13.60 11.30   ~ 545 1
19 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1468 1
20 2MASX J23083397+0521293 Sy2 23 08 33.9521188955 +05 21 29.763819747           ~ 135 0
21 2MASX J23390127+3621087 SyG 23 39 01.274 +36 21 08.77   16.17       ~ 194 1

    Equat.    Gal    SGal    Ecl

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2020.07.12-11:03:03

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