2007ApJ...654..240R

Query : 2007ApJ...654..240R

2007ApJ...654..240R - Astrophys. J., 654, 240-251 (2007/January-1)

Giant molecular clouds in M31. I. Molecular cloud properties.

ROSOLOWSKY E.

Abstract (from CDS):

We present Berkeley-Illinois-Maryland Association (BIMA) millimeter interferometer observations of giant molecular clouds (GMCs) along a spiral arm in M31. The observations consist of a survey using the compact configuration of the interferometer and follow-up, higher resolution observations on a subset of the detections in the survey. The data are processed using an analysis algorithm designed to extract GMCs and correct their derived properties for observational biases, thereby facilitating comparison with Milky Way data. The algorithm identifies 67 GMCs, of which 19 have a sufficient signal-to-noise ratio to accurately measure their properties. The GMCs in this portion of M31 are indistinguishable from those found in the Milky Way, having a similar size-line width relationship and distribution of virial parameters, confirming the results of previous, smaller studies. The velocity gradients and angular momenta of the GMCs are comparable to the values measured in M33 and the Milky Way, and in all cases are below expected values based on the local galactic shear. The studied region of M31 has an interstellar radiation field, metallicity, Toomre Q parameter, and midplane volume density similar to those of the inner Milky Way, so the similarity of GMC populations between the two systems is not surprising.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual (Andromeda) - Galaxies: ISM - ISM: Clouds - Radio Lines: ISM

VizieR on-line data: <Available at CDS (J/ApJ/654/240): table2.dat>

Nomenclature: Table 2: [R2007] NN (Nos 1-67).

CDS comments: Calibrators 0102+504 and 0136+478 not identified

Simbad objects: 77

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Number of rows : 77
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 [R2007] 42 MoC 00 41 21.4 +41 21 50           ~ 1 0
2 [R2007] 43 MoC 00 41 23.7 +41 21 49           ~ 1 0
3 [R2007] 65 MoC 00 41 25.8 +41 22 15           ~ 1 0
4 [R2007] 57 MoC 00 41 26.9 +41 22 13           ~ 1 0
5 [R2007] 21 MoC 00 41 27.6 +41 21 36           ~ 1 0
6 [R2007] 44 MoC 00 41 29.3 +41 21 40           ~ 1 0
7 [R2007] 19 MoC 00 41 31.4 +41 22 35           ~ 1 0
8 [R2007] 52 MoC 00 41 41.8 +41 24 19           ~ 1 0
9 [R2007] 39 MoC 00 41 44.8 +41 24 47           ~ 1 0
10 [R2007] 28 MoC 00 41 52.2 +41 25 22           ~ 1 0
11 [R2007] 45 MoC 00 41 56.2 +41 26 37           ~ 1 0
12 [R2007] 32 MoC 00 41 57.2 +41 26 23           ~ 1 0
13 [R2007] 49 MoC 00 41 58.5 +41 27 49           ~ 1 0
14 [R2007] 18 MoC 00 41 58.8 +41 26 50           ~ 1 0
15 [R2007] 15 MoC 00 42 00.6 +41 26 55           ~ 1 0
16 [R2007] 64 MoC 00 42 02.2 +41 27 53           ~ 1 0
17 [R2007] 3 MoC 00 42 02.6 +41 27 19           ~ 1 0
18 [R2007] 17 MoC 00 42 06.9 +41 28 03           ~ 1 0
19 [R2007] 31 MoC 00 42 08.8 +41 27 35           ~ 1 0
20 [R2007] 12 MoC 00 42 10.4 +41 28 00           ~ 1 0
21 [R2007] 10 MoC 00 42 10.6 +41 28 19           ~ 1 0
22 [R2007] 54 MoC 00 42 11.7 +41 27 41           ~ 1 0
23 [R2007] 61 MoC 00 42 12.4 +41 28 48           ~ 1 0
24 [R2007] 35 MoC 00 42 15.2 +41 29 16           ~ 1 0
25 [R2007] 5 MoC 00 42 17.6 +41 28 53           ~ 1 0
26 [R2007] 37 MoC 00 42 18.9 +41 29 09           ~ 1 0
27 [R2007] 13 MoC 00 42 19.2 +41 29 39           ~ 1 0
28 [R2007] 8 MoC 00 42 19.5 +41 29 11           ~ 1 0
29 [R2007] 27 MoC 00 42 19.6 +41 28 49           ~ 1 0
30 [R2007] 14 MoC 00 42 19.7 +41 29 41           ~ 1 0
31 [R2007] 50 MoC 00 42 19.9 +41 29 21           ~ 1 0
32 [R2007] 6 MoC 00 42 21.5 +41 29 40           ~ 1 0
33 [R2007] 20 MoC 00 42 21.7 +41 29 50           ~ 1 0
34 [R2007] 4 MoC 00 42 23.1 +41 29 57           ~ 1 0
35 [R2007] 51 MoC 00 42 23.4 +41 30 06           ~ 1 0
36 [R2007] 23 MoC 00 42 23.5 +41 29 57           ~ 1 0
37 [R2007] 38 MoC 00 42 23.6 +41 30 00           ~ 1 0
38 [R2007] 59 MoC 00 42 24.1 +41 29 23           ~ 1 0
39 [R2007] 48 MoC 00 42 24.1 +41 29 26           ~ 1 0
40 [R2007] 58 MoC 00 42 24.3 +41 29 30           ~ 1 0
41 [R2007] 11 MoC 00 42 26.4 +41 30 06           ~ 1 0
42 [R2007] 30 MoC 00 42 26.6 +41 30 06           ~ 1 0
43 [R2007] 53 MoC 00 42 27.7 +41 30 39           ~ 1 0
44 [R2007] 63 MoC 00 42 27.9 +41 29 05           ~ 1 0
45 [R2007] 62 MoC 00 42 29.8 +41 32 10           ~ 1 0
46 [R2007] 29 MoC 00 42 32.8 +41 31 52           ~ 1 0
47 [R2007] 36 MoC 00 42 33.2 +41 31 47           ~ 1 0
48 [R2007] 60 MoC 00 42 34.5 +41 31 17           ~ 1 0
49 [R2007] 67 MoC 00 42 35.1 +41 32 02           ~ 1 0
50 [R2007] 33 MoC 00 42 35.8 +41 32 02           ~ 1 0
51 [R2007] 34 MoC 00 42 40.9 +41 31 58           ~ 1 0
52 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
53 [R2007] 41 MoC 00 43 11.7 +41 36 47           ~ 1 0
54 [R2007] 1 MoC 00 43 13.0 +41 36 55           ~ 1 0
55 [R2007] 2 MoC 00 43 14.6 +41 37 11           ~ 1 0
56 [R2007] 24 MoC 00 43 15.6 +41 37 27           ~ 1 0
57 [R2007] 22 MoC 00 43 17.1 +41 37 39           ~ 1 0
58 [R2007] 16 MoC 00 44 08.3 +41 09 41           ~ 1 0
59 [R2007] 26 MoC 00 44 10.9 +41 09 59           ~ 1 0
60 [R2007] 55 MoC 00 44 11.1 +41 08 54           ~ 1 0
61 [R2007] 56 MoC 00 44 11.3 +41 09 54           ~ 1 0
62 [R2007] 46 MoC 00 44 12.9 +41 09 56           ~ 1 0
63 [R2007] 47 MoC 00 44 46.6 +41 25 21           ~ 1 0
64 [R2007] 66 MoC 00 44 49.1 +41 26 27           ~ 1 0
65 [R2007] 25 MoC 00 44 51.5 +41 26 01           ~ 1 0
66 [R2007] 9 MoC 00 44 52.2 +41 26 28           ~ 1 0
67 [R2007] 7 MoC 00 46 16.4 +41 27 46           ~ 1 0
68 [R2007] 40 MoC 00 46 16.9 +41 27 51           ~ 1 0
69 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
70 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
71 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
72 NAME Heart Nebula HII 02 32.7 +61 27           ~ 336 1
73 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
74 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
75 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
76 NAME Rosette Molecular Cloud MoC 06 34.7 +04 02           ~ 277 0
77 NAME Local Group GrG ~ ~           ~ 9325 0

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