1998ApJ...507L.121T

Query : 1998ApJ...507L.121T

1998ApJ...507L.121T - Astrophys. J., 507, L121-L124 (1998/November-2)

13CO (J = 1-0) depression in luminous starburst mergers.

TANIGUCHI Y. and OHYAMA Y.

Abstract (from CDS):

It is known that the class of luminous starburst galaxies tends to have higher R=12CO (J=1-0)/13CO (J=1-0) integrated line intensity ratios (R>20) than normal spiral galaxies (R∼10). Since most previous studies investigated only R, it remains uncertain whether the luminous starburst galaxies are overabundant in 12CO or underabundant in 13CO. Here we propose a new observational test to examine this problem. Our new test is to compare far-infrared luminosities [L(FIR)] with those of 12CO and 13CO [L(12CO) and L(13CO), respectively]. It is shown that there is a very tight correlation between L(12CO) and L(FIR), as found in many previous studies. However, we find that the 13CO luminosities of the high-R galaxies are lower by a factor of 3 on average than those expected from the correlation for the remaining galaxies with ordinary R values. Therefore, we conclude that the observed high R values for the luminous starburst galaxies are attributed to their lower 13CO line intensities.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Starburst - ISM: Molecules - Galaxies: Quasars: Emission Lines

Simbad objects: 52

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Number of rows : 52
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 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
2 NGC 134 EmG 00 30 21.61 -33 14 46.2   11.14 10.12 9.69 10.4 ~ 176 1
3 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
4 IC 1623 IG 01 07 47.24 -17 30 25.0   15       ~ 338 2
5 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
6 NGC 520 AGN 01 24 35.07120 +03 47 32.6760 12.41 12.24 11.42     ~ 528 3
7 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
8 NGC 660 Sy2 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 588 2
9 NGC 828 AGN 02 10 09.5469097104 +39 11 25.233638244   13.0       ~ 171 1
10 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
11 NGC 986 Sy1 02 33 34.3087856832 -39 02 42.128176704 11.72 11.74 10.91 10.10 11.3 ~ 192 2
12 UGCA 39 GiG 02 41 55.092 +59 36 14.73   16       ~ 360 1
13 NGC 1058 Sy2 02 43 30.0264850248 +37 20 28.782851784   12.29 11.75 10.85   ~ 483 0
14 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
15 Z 327-6 H2G 03 48 20.731 +70 07 58.37   14.6       ~ 142 2
16 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
17 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 756 3
18 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
19 NGC 2369 Sy1 07 16 37.753 -62 20 37.51   13.23   11.56 12.3 ~ 137 0
20 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
21 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
22 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
23 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
24 IC 2554 AG? 10 08 50.563 -67 01 51.07   12.43 13.20 11.24 11.9 ~ 66 0
25 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
26 M 66 AGN 11 20 15.0 +12 59 29 9.85 9.65 8.92     ~ 1509 4
27 NGC 3628 LIN 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 853 3
28 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
29 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
30 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
31 NGC 4194 rG 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 467 2
32 NGC 4414 GiC 12 26 27.1276893168 +31 13 24.626206488 11.12 10.96 10.12     ~ 593 2
33 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
34 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2
35 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
36 NGC 5033 Sy2 13 13 27.535 +36 35 37.14   11.01 12.03 9.73   ~ 909 1
37 M 63 LIN 13 15 49.2741893928 +42 01 45.728076108   9.34 8.59 8.35   ~ 1292 2
38 NGC 5218 AGN 13 32 10.4297476488 +62 46 04.122362532   13.1       ~ 181 1
39 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
40 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
41 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
42 NGC 6215 GiG 16 51 06.811 -58 59 36.46   11.63 11.28 10.25 11.7 ~ 114 0
43 NGC 6221 Sy2 16 52 46.329 -59 13 00.99   10.90 13.45 9.68 10.4 ~ 328 0
44 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
45 NGC 6503 LIN 17 49 26.4207792072 +70 08 39.604132176 11.56 10.95 10.28 9.92   ~ 551 1
46 LEDA 84885 Sy1 18 32 41.177 -34 11 27.46   15.63   13.66   ~ 142 1
47 NGC 6810 Sy2 19 43 34.4178888528 -58 39 20.192400540   12.34 11.22 10.71   ~ 163 1
48 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
49 NGC 7130 Sy2 21 48 19.5412287192 -34 57 04.492024884   12.86 13.87 11.57   ~ 483 1
50 IC 5179 Sy1 22 16 09.1191653256 -36 50 37.117603752   12.29 11.89 11.38   ~ 214 1
51 NGC 7552 Sy1 23 16 10.66 -42 35 04.7 11.34 11.22 10.57 10.08 11.1 ~ 574 3
52 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3

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