2025ApJ...981..110L

Query : 2025ApJ...981..110L

2025ApJ...981..110L - Astrophys. J., 981, 110 (2025/March-2)

Building on the Archives: Connecting the CN/CO Intensity Ratio with Global Galaxy Properties in Nearby U/LIRGs.

LEDGER B., WILSON C.D., KLIMI O., TORRES-ALBA N. and SAITO T.

Abstract (from CDS):

We use the CN/CO intensity ratio to obtain the dense gas fraction, fdense, for a sample of 16 ultraluminous and luminous infrared (IR) galaxies and compare fdense with a suite of global galaxy properties. We find a significant correlation between fdense and star formation rate calculated using both IR luminosities and radio continuum, although there is significant scatter in each relation. We find no trend between global or peak fdense and merger stage. We find no correlation between global fdense and X-ray luminosity; however, the correlation becomes significant when we measure fdense at the location of peak X-ray emission. Our interpretation is that the dense gas is co-localized with strong X-ray emission from active galactic nuclei or strong central star formation.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Active galaxies - Interstellar medium - Ultraluminous infrared galaxies - Starburst galaxies - Seyfert galaxies - Luminous infrared galaxies - Interacting galaxies - AGN host galaxies - Star formation - Molecular gas - Active galactic nuclei - Galaxy nuclei

Simbad objects: 18

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Number of rows : 18
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 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
2 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1987 2
3 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
4 IRAS 05189-2524 Sy2 05 21 01.3994605776 -25 21 45.321827832   15.47 14.75     ~ 545 0
5 NGC 2623 LIN 08 38 24.016 +25 45 16.29 14.10 13.99 13.36     ~ 533 2
6 NGC 3110 Sy1 10 04 02.12400 -06 28 29.1250   13.4   13.3 12.5 ~ 191 2
7 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
8 IRAS 10565+2448 LIN 10 59 18.12811 +24 32 34.7357   15.7       ~ 302 0
9 MCG-06-26-013 EmG 11 53 11.722 -39 07 48.72   13.30   11.86   ~ 203 1
10 NGC 4355 Sy2 12 26 54.6206739120 -00 52 39.421212996   14.21 13.37     ~ 527 2
11 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
12 2MASX J13150638-5509225 Sy2 13 15 06.33480 -55 09 22.7736   17.3       ~ 172 0
13 NGC 5104 AGN 13 21 23.11513 +00 20 33.3820   14.5   13.227   ~ 169 1
14 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
15 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
16 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
17 LEDA 84885 Sy1 18 32 41.177 -34 11 27.46   15.63   13.66   ~ 142 1
18 NGC 7469 Sy1 23 03 15.6 +08 52 26 12.60 13.00 12.34     ~ 2253 3

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