2009ApJ...706.1213M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST06:30:17

2009ApJ...706.1213M - Astrophys. J., 706, 1213-1225 (2009/December-1)

ASTE CO (3-2) mapping toward the whole optical disk of M 83: properties of inter-arm giant molecular-cloud associations.

MURAOKA K., KOHNO K., TOSAKI T., KUNO N., NAKANISHI K., SORAI K., SAWADA T., TANAKA K., HANDA T., FUKUHARA M., EZAWA H. and KAWABE R.

Abstract (from CDS):

We present a new on-the-fly mapping of CO (J = 3-2) line emission with the Atacama Submillimeter Telescope Experiment toward the 8'x8' (or 10.5 x10.5 kpc at the distance of 4.5 Mpc) region of the nearby barred spiral galaxy M 83 at an effective resolution of 25''. Due to its very high sensitivity, our CO (J = 3 - 2) map can depict not only spiral arm structures but also spur-like substructures extended in inter-arm regions. This spur-like substructures in CO (J = 3-2) emission are well coincident with the distribution of massive star-forming regions traced by Hα luminosity and Spitzer/Infrared Array Camera 8 µm emission. We have identified 54 CO (J = 3-2) clumps as Giant Molecular-cloud Associations (GMAs) employing the CLUMPFIND algorithm, and have obtained their sizes, velocity dispersions, virial masses, and CO luminosity masses. We found that the virial parameter α, which is defined as the ratio of the virial mass to the CO luminosity mass, is almost unity for GMAs in spiral arms, whereas there exist some GMAs whose α are 3-10 in the inter-arm region. We found that GMAs with higher α tend not to be associated with massive star-forming regions, while other virialized GMAs are. Since α mainly depends on velocity dispersion of the GMA, we suppose that the onset of star formation in these unvirialized GMAs with higher α are suppressed by an increase in internal velocity dispersions of giant molecular clouds within these GMAs due to shear motion.

Abstract Copyright:

Journal keyword(s): galaxies: individual (M 83, NGC 5236) - galaxies: ISM - galaxies: starburst

Nomenclature: Table 3: [MKT2009b] NN (Nos 1-27). Table 4: [MKT2009b] NN (Nos 28-54).

Simbad objects: 70

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Number of rows : 70

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 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10903 1
2 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5134 1
3 NGC 604 HII 01 34 32.1 +30 47 01           ~ 544 0
4 NGC 986 EmG 02 33 34.349 -39 02 42.21 11.72 11.74 10.91 10.10 11.3 ~ 167 1
5 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1385 1
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
7 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2133 0
8 M 99 H2G 12 18 49.625 +14 24 59.36 10.45 10.44 9.87     ~ 762 2
9 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1646 2
10 M 90 Sy2 12 36 49.816 +13 09 46.33 10.56 10.26 9.54     ~ 794 1
11 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3781 4
12 [MKT2009b] 54 MoC 13 36 44.70 -29 51 37.8           ~ 1 0
13 [MKT2009b] 29 MoC 13 36 46.50 -29 52 52.9           ~ 1 0
14 [MKT2009b] 45 MoC 13 36 48.80 -29 51 15.4           ~ 1 0
15 [MKT2009b] 28 MoC 13 36 51.10 -29 50 45.4           ~ 1 0
16 [MKT2009b] 4 MoC 13 36 52.80 -29 51 52.9           ~ 1 0
17 [MKT2009b] 1 MoC 13 36 53.40 -29 53 00.4           ~ 1 0
18 [MKT2009b] 3 MoC 13 36 53.40 -29 51 30.4           ~ 1 0
19 [MKT2009b] 6 MoC 13 36 53.40 -29 51 00.4           ~ 1 0
20 [MKT2009b] 31 MoC 13 36 54.00 -29 48 37.9           ~ 1 0
21 [MKT2009b] 41 MoC 13 36 54.50 -29 55 30.4           ~ 1 0
22 [MKT2009b] 53 MoC 13 36 55.10 -29 54 00.4           ~ 1 0
23 [MKT2009b] 5 MoC 13 36 55.70 -29 52 52.9           ~ 1 0
24 [MKT2009b] 43 MoC 13 36 55.70 -29 51 30.4           ~ 1 0
25 [MKT2009b] 13 MoC 13 36 55.70 -29 50 45.4           ~ 1 0
26 [MKT2009b] 37 MoC 13 36 55.70 -29 50 07.9           ~ 1 0
27 [MKT2009b] 14 MoC 13 36 56.30 -29 50 37.9           ~ 1 0
28 [MKT2009b] 33 MoC 13 36 56.30 -29 49 45.4           ~ 1 0
29 [MKT2009b] 39 MoC 13 36 56.80 -29 51 07.9           ~ 1 0
30 [MKT2009b] 26 MoC 13 36 57.40 -29 54 45.4           ~ 1 0
31 [MKT2009b] 35 MoC 13 36 58.60 -29 55 22.9           ~ 1 0
32 [MKT2009b] 49 MoC 13 36 59.20 -29 49 37.9           ~ 1 0
33 [MKT2009b] 48 MoC 13 36 59.20 -29 49 15.4           ~ 1 0
34 [MKT2009b] 17 MoC 13 36 59.60 -29 54 22.9           ~ 1 0
35 [MKT2009b] 34 MoC 13 36 59.70 -29 48 30.4           ~ 1 0
36 [MKT2009b] 27 MoC 13 37 00.30 -29 49 52.9           ~ 1 0
37 [MKT2009b] 22 MoC 13 37 00.90 -29 54 30.4           ~ 1 0
38 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2228 2
39 [MKT2009b] 47 MoC 13 37 01.50 -29 53 22.9           ~ 1 0
40 [MKT2009b] 7 MoC 13 37 02.60 -29 49 52.9           ~ 1 0
41 [MKT2009b] 40 MoC 13 37 03.20 -29 52 30.4           ~ 1 0
42 [MKT2009b] 8 MoC 13 37 03.80 -29 53 52.9           ~ 1 0
43 [MKT2009b] 32 MoC 13 37 04.30 -29 55 30.4           ~ 1 0
44 [MKT2009b] 12 MoC 13 37 04.30 -29 49 30.4           ~ 1 0
45 [MKT2009b] 24 MoC 13 37 04.90 -29 49 52.9           ~ 1 0
46 [MKT2009b] 42 MoC 13 37 05.50 -29 52 15.4           ~ 1 0
47 [MKT2009b] 10 MoC 13 37 06.60 -29 49 37.9           ~ 1 0
48 [MKT2009b] 21 MoC 13 37 06.70 -29 53 22.9           ~ 1 0
49 [MKT2009b] 36 MoC 13 37 07.20 -29 54 22.9           ~ 1 0
50 [MKT2009b] 18 MoC 13 37 07.20 -29 53 15.4           ~ 1 0
51 [MKT2009b] 19 MoC 13 37 07.20 -29 53 07.9           ~ 1 0
52 [MKT2009b] 11 MoC 13 37 07.20 -29 49 30.4           ~ 1 0
53 [MKT2009b] 50 MoC 13 37 07.20 -29 48 23.8           ~ 1 0
54 [MKT2009b] 20 MoC 13 37 07.80 -29 52 52.9           ~ 1 0
55 [MKT2009b] 23 MoC 13 37 08.40 -29 52 30.4           ~ 1 0
56 [MKT2009b] 16 MoC 13 37 08.40 -29 52 15.5           ~ 1 0
57 [MKT2009b] 2 MoC 13 37 08.40 -29 51 22.9           ~ 1 0
58 [MKT2009b] 44 MoC 13 37 09.50 -29 55 00.4           ~ 1 0
59 [MKT2009b] 38 MoC 13 37 10.10 -29 54 37.9           ~ 1 0
60 [MKT2009b] 30 MoC 13 37 11.80 -29 51 30.4           ~ 1 0
61 [MKT2009b] 9 MoC 13 37 11.80 -29 50 00.4           ~ 1 0
62 [MKT2009b] 52 MoC 13 37 12.40 -29 54 15.4           ~ 1 0
63 [MKT2009b] 51 MoC 13 37 13.00 -29 52 22.9           ~ 1 0
64 [MKT2009b] 46 MoC 13 37 14.10 -29 51 52.9           ~ 1 0
65 [MKT2009b] 15 MoC 13 37 14.70 -29 50 45.4           ~ 1 0
66 [MKT2009b] 25 MoC 13 37 17.00 -29 52 00.3           ~ 1 0
67 WOS 48 C* 15 23 05.0744336371 -51 25 58.881494593   17.85 16.66 14.51 10.18 C 118 1
68 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 683 0
69 SNR G006.4-00.1 SNR 18 01 22.7 -23 17 20           ~ 653 1
70 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2234 2

    Equat.    Gal    SGal    Ecl

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2020.07.08-06:30:17

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