2021ApJ...909...56L

Query : 2021ApJ...909...56L

2021ApJ...909...56L - Astrophys. J., 909, 56-56 (2021/March-1)

CO excitation, molecular gas density, and interstellar radiation field in local and high-redshift galaxies.

LIU D., DADDI E., SCHINNERER E., SAITO T., LEROY A., SILVERMAN J.D., VALENTINO F., MAGDIS G.E., GAO Y., JIN S., PUGLISI A. and GROVES B.

Abstract (from CDS):

We study the carbon monoxide (CO) excitation, mean molecular gas density, and interstellar radiation field (ISRF) intensity in a comprehensive sample of 76 galaxies from local to high redshift (z ∼ 0-6), selected based on detections of their CO transitions J = 2 - 1 and 5 - 4 and their optical/infrared/(sub)millimeter spectral energy distributions (SEDs). We confirm the existence of a tight correlation between CO excitation as traced by the CO (5-4)/(2-1) line ratio R52 and the mean ISRF intensity <U>as derived from infrared SED fitting using dust SED templates. By modeling the molecular gas density probability distribution function (PDF) in galaxies and predicting CO line ratios with large velocity gradient radiative transfer calculations, we present a framework linking global CO line ratios to the mean molecular hydrogen gas density <nH2_>and kinetic temperature Tkin. Mapping in this way observed R52 ratios to <nH2_>and Tkin probability distributions, we obtain positive <U>-<nH2_>and <U>-Tkin correlations, which imply a scenario in which the ISRF in galaxies is mainly regulated by Tkin and (nonlinearly) by <nH2_>. A small fraction of starburst galaxies showing enhanced <nH2_>could be due to merger-driven compaction. Our work demonstrates that ISRF and CO excitation are tightly coupled and that density-PDF modeling is a promising tool for probing detailed ISM properties inside galaxies.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Interstellar medium - Star formation - Molecular gas - Starburst galaxies - Spiral galaxies

VizieR on-line data: <Available at CDS (J/ApJ/909/56): table1.dat>

Simbad objects: 84

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Number of rows : 84
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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 MCG+12-02-001 AG? 00 54 03.943 +73 05 05.23   16       ~ 120 1
3 IC 1623 IG 01 07 47.24 -17 30 25.0   15       ~ 338 2
4 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
5 NGC 828 AGN 02 10 09.5469097104 +39 11 25.233638244   13.0       ~ 171 1
6 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
7 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
8 NGC 1266 Sy1 03 16 00.7739640240 -02 25 37.827013584   14   12.46   ~ 332 2
9 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
10 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
12 NGC 2369 Sy1 07 16 37.753 -62 20 37.51   13.23   11.56 12.3 ~ 137 0
13 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
14 NGC 2798 GiG 09 17 22.95407 +41 59 58.9560 13.03 13.04 12.32     ~ 338 3
15 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
16 [VV2006] J095754.7+023832 QSO 09 57 54.7079257440 +02 38 32.777463408   19.558 19.583   19.242 ~ 60 0
17 ACS-GC 20103037 rG 09 58 23.65 +02 12 01.3 24.28 24.12 23.38 23.06 22.31 ~ 22 0
18 ACS-GC 20103393 rG 09 58 28.367 +02 11 36.30 23.502 23.32 22.80 22.50 21.862 ~ 13 0
19 ACS-GC 20129314 Sy1 09 58 38.467 +02 24 39.29   23.042 22.610   21.41 ~ 31 0
20 COSMOS2015 541203 rG 09 58 47.05 +02 07 20.2 24.06 24.09 23.77 23.51 22.91 ~ 12 0
21 ACS-GC 20044450 Sy2 09 59 08.244 +01 54 45.92 23.110 23.12 22.58 22.39 21.776 ~ 20 0
22 ACS-GC 20181894 AGN 09 59 24.43 +02 43 06.3   22.863 22.575   22.001 ~ 10 0
23 ACS-GC 20125813 rG 09 59 31.443 +02 27 03.02 22.176 22.078 21.5772 21.564 21.338 ~ 36 0
24 COSMOS2015 779541 EmG 09 59 38.10 +02 28 57.1 24.84 24.56 24.11 23.80 23.16 ~ 7 0
25 COSMOS2015 622451 rG 09 59 41.31 +02 14 42.8 26.14 25.92 25.42 25.21 24.34 ~ 13 0
26 ACS-GC 20092808 rG 09 59 55.54 +02 15 11.4 24.00 23.71 23.27 23.12 22.68 ~ 25 0
27 ACS-GC 20069298 rG 10 00 02.069 +02 01 32.72 25.02 24.93 24.25 23.58 22.89 ~ 29 0
28 COSMOS2015 677652 G 10 00 05.53 +02 19 42.9 24.48 24.17 23.87 23.70 23.26 ~ 7 0
29 ACS-GC 20123399 rG 10 00 08.76000 +02 19 01.9999         22.36 ~ 23 0
30 [VV2006] J100014.1+022838 QSO 10 00 14.0894011632 +02 28 38.601546888 20.94 20.8573 20.547   20.55 ~ 54 0
31 AS2COS 0059.1 rG 10 00 20.690 +02 35 20.37           ~ 116 0
32 COSMOS2015 465742 rG 10 00 28.447 +02 00 10.24 24.49 24.23 23.40 22.88 22.081 ~ 16 0
33 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
34 COSMOS2015 901622 rG 10 00 29.90 +02 40 07.1 22.841 22.83 22.59 22.64 22.46 ~ 12 0
35 COSMOSMAMBO MM J100038+020825 mm 10 00 38.1 +02 08 25           ~ 7 0
36 ACS-GC 20147055 rG 10 00 50.45 +02 33 55.9 23.83 23.59 23.09 22.88 22.35 ~ 19 0
37 COSMOS2015 916658 rG 10 00 53.551 +02 41 25.21 23.69 23.44 22.95 22.70 22.114 ~ 15 0
38 COSMOS2015 401922 EmG 10 01 30.42 +01 54 12.5 24.05 23.82 23.46 23.36 23.06 ~ 7 0
39 COSMOS2015 365428 rG 10 01 53.225 +01 50 37.51 24.36 24.02 23.64 23.18 22.36 ~ 12 0
40 ACS-GC 20007293 AGN 10 01 59.76 +01 43 28.0 24.16 23.94 23.35 22.94 22.25 ~ 11 0
41 ACS-GC 20109892 rG 10 02 13.64 +02 23 29.7     23.692   22.197 ~ 12 0
42 ACS-GC 20028190 rG 10 02 15.36 +01 54 05.2   24.812 24.574   23.083 ~ 23 0
43 ACS-GC 20028774 rG 10 02 17.98 +01 56 52.5 23.487 23.21 22.77 22.59 21.965 ~ 15 0
44 ACS-GC 20079962 Sy1 10 02 19.647 +02 17 15.71   22.756 22.273   21.29 ~ 37 0
45 ACS-GC 20164945 AGN 10 02 32.68 +02 44 39.7 25.08 24.80 24.40 23.99 23.31 ~ 9 0
46 ACS-GC 20054778 Sy2 10 02 32.91 +02 00 27.6 23.84 23.490 23.147   21.587 ~ 28 0
47 ACS-GC 20108131 rG 10 02 38.047 +02 19 04.03 24.58 24.51 23.69 23.17 22.31 ~ 20 0
48 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
49 M 95 GiP 10 43 57.7313485800 +11 42 13.301191332 10.71 10.51 9.73 9.48   ~ 1238 2
50 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
51 NGC 3690NE AGN 11 28 33.07 +58 33 54.2   11.8       ~ 635 4
52 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
53 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
54 NGC 4536 H2G 12 34 27.12887 +02 11 16.3680 11.14 11.16 10.55 17.393   ~ 913 3
55 NAME BzK 4171 rG 12 36 26.55 +62 08 35.2 26.53 25.7766 25.9   24.3899 ~ 37 0
56 NAME BzK 16000 G 12 36 30.0982 +62 14 28.357 24.73 24.5722 25.14   23.1990 ~ 35 0
57 M 90 Sy2 12 36 49.8009839880 +13 09 46.523813040 10.56 10.26 9.54     ~ 953 1
58 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
59 NAME BzK 21000 rG 12 37 10.63 +62 22 34.7 23.93 25.0574     23.7554 ~ 55 0
60 NAME SMM J123711+622212 rG 12 37 11.92 +62 22 12.1   27.1786 25.185   24.4196 ~ 237 0
61 NAME BzK 17999 rG 12 37 51.85 +62 15 20.1 25.87 25.9037     25.4331 ~ 28 0
62 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
63 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
64 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
65 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
66 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
67 IC 883 SBG 13 20 35.37960 +34 08 21.8400   14.8       ~ 421 1
68 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
69 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 500 1
70 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
71 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
72 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
73 NGC 5713 GiG 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 421 2
74 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
75 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
76 NAME HFLS 3 G 17 06 47.8 +58 46 23           ~ 151 0
77 LEDA 60189 LIN 17 23 21.96264 -00 17 00.8088   15.1       ~ 454 0
78 LEDA 84885 Sy1 18 32 41.177 -34 11 27.46   15.63   13.66   ~ 142 1
79 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
80 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3
81 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
82 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3
83 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 350 3
84 Z 455-59 AGN 23 51 26.731 +20 35 10.22   14.9       ~ 237 0

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