2015A&A...579A.101A


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.21CEST22:07:22

2015A&A...579A.101A - Astronomy and Astrophysics, volume 579A, 101-101 (2015/7-1)

Lambda = 3mm line survey of nearby active galaxies.

ALADRO R., MARTIN S., RIQUELME D., HENKEL C., MAUERSBERGER R., MARTIN-PINTADO J., WEISS A., LEFEVRE C., KRAMER C., REQUENA-TORRES M.A. and ARMIJOS-ABENDANO R.J.

Abstract (from CDS):

We aim to better understand the imprints that the nuclear activity in galaxies leaves in the molecular gas. We used the IRAM 30m telescope to observe the frequency range ~[86-116]GHz towards the central regions of the starburst galaxies M83, M82, and NGC253, the galaxies hosting an active galactic nucleus (AGN) M51, NGC1068, and NGC7469, and the ultra-luminous infrared galaxies (ULIRGs) Arp 220 and Mrk 231. Assuming local thermodynamic equilibrium (LTE), we calculated the column densities of 27 molecules and 10 isotopologues (or their upper limits in case of non-detections). Among others, we report the first tentative detections of CH3CHO, HNCO, and NS in M82 and, for the first time in the extragalactic medium, HC5N in NGC253. Hα recombination lines were only found in M82 and NGC253. Vibrationally excited lines of HC3N were only detected in Arp220. CH3CCH emission is only seen in the starburst-dominated galaxies. By comparison of the fractional abundances among the galaxies, we looked for the molecules that are best suited to characterise the chemistry of each group of galaxies (starbursts, AGNs and ULIRGs), as well as the differences among galaxies within the same group. Suitable species for characterising and comparing starburst galaxies are CH3OH and HNCO as tracers of large-scale shocks, which dominate early to intermediate starburst stages, and CH3CCH, c-C3H2, and HCO as tracers of UV fields, which control the intermediate-to-old or post starburst phases. M83 shows signs of a shock-dominated environment. NGC253 is characterised by both strong shocks and some UV fields. M82 stands out for its bright photo-dissociated region tracers, which indicate an UV field-dominated environment. Regarding AGNs, the abundances of HCN and CN (previously claimed as enhanced in AGNs) in M51 are similar to those in starburst galaxies, while the HCN/HCO+ ratio is high in M51 and NGC1068, but not in NGC7469. We did not find a correlation between the HCN/CS ratio (recently claimed as a possible starburst/AGN discriminator) and the AGN activity. However, a high enough spatial resolution to separate their circumnuclear disks from the surrounding star-forming regions is needed to find molecular abundance trends in AGNs. High abundances of H13CN and HC3N, as well as a similarity between the column densities of 13CO and C18O, are representative of the molecular interstellar medium in the ULIRGs. Furthermore, the chemistry of Arp220 points towards a more starburst-dominated environment, while that of Mrk231 more resembles the AGNs of our sample.

Abstract Copyright:

Journal keyword(s): ISM: molecules - galaxies: ISM - galaxies: nuclei - galaxies: active - galaxies: abundances - radio lines: ISM

VizieR on-line data: <Available at CDS (J/A+A/579/A101): tablea.dat sp/* 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 - 2019
#notes
1 NGC 100 LSB 00 24 02.837 +16 29 11.00   14.6       ~ 103 0
2 NGC 250 GiG 00 47 16.0243368879 +07 54 36.126577428   14.9       ~ 22 0
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2838 2
4 NGC 390 GiG 01 08 12.976 +32 27 12.82           ~ 15 0
5 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 3951 2
6 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1139 3
7 NGC 1134 IG 02 53 41.3600789046 +13 00 51.205830693   13.2       ~ 101 1
8 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1132 3
9 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 1917 1
10 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 426 0
11 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5182 6
12 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1717 3
13 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3659 4
14 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2138 2
15 NGC 5690 GiG 14 37 41.0621949635 +02 17 27.095213875   13.10       ~ 137 0
16 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2596 4
17 NAME Galactic Circumnuclear Disk PoG 17 45 40.0 -29 00 28           ~ 103 0
18 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 10856 0
19 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1830 1
20 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 927 0
21 NGC 7469 Sy1 23 03 15.674 +08 52 25.28 12.60 13.00 12.34     ~ 1830 3

    Equat.    Gal    SGal    Ecl

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2019.07.21-22:07:22

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