2015AJ....150..147F

Query : 2015AJ....150..147F

2015AJ....150..147F - Astron. J., 150, 147 (2015/November-0)

A CGPS look at the spiral structure of the outer Milky Way. I. Distances and velocities to star-forming regions.

FOSTER T. and BRUNT C.M.

Abstract (from CDS):

We present a new catalog of spectrophotometric distances and line of sight systemic velocities to 103 H ii regions between 90° ≤ l ≤ 195° (longitude quadrants II and part of III). Two new velocities for each region are independently measured using 1 arcmin resolution 21 cm H i and 2.6 mm 12CO line maps (from the Canadian Galactic Plane Survey and Five College Radio Astronomy Observatory Outer Galaxy Surveys) that show where gaseous shells are observed around the periphery of the ionized gas. Known and neighboring O- and B-type stars with published UBV photometry and MK classifications are overlaid onto 21 cm continuum maps, and those stars observed within the boundary of the H ii emission (and whose distance is not more than three times the standard deviation of the others) are used to calculate new mean stellar distances to each of the 103 nebulae. Using this approach of excluding distance outliers from the mean distance to a group of many stars in each H ii region lessens the impact of anomalous reddening for certain individuals. The standard deviation of individual stellar distances in a cluster is typically 20% per stellar distance, and the error in the mean distance to the cluster is typically ±10%. Final mean distances of nine common objects with very long baseline interferometry parallax distances show a 1:1 correspondence. Further, comparison with previous catalogs of H ii regions in these quadrants shows a 50% reduction in scatter for the distance to Perseus spiral arm objects in the same region, and a reduction by ∼1/{sqrt(2)} in scatter around a common angular velocity relative to the Sun 'Omega -Ω0(km/s/kpc). The purpose of the catalog is to provide a foundation for more detailed large-scale Galactic spiral structure and dynamics (rotation curve, density wave streaming) studies in the 2nd and 3rd quadrants, which from the Sun's location is the most favorably viewed section of the Galaxy.

Abstract Copyright: ∼

Journal keyword(s): H ii regions - ISM: kinematics and dynamics

VizieR on-line data: <Available at CDS (J/AJ/150/147): table1.dat table2.dat>

Simbad objects: 125

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Number of rows : 125
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 7822 HII 00 01 08.58 +67 25 17.0           ~ 121 3
2 LBN 117.62+02.29 HII 00 01 29 +64 39.0           ~ 41 0
3 LBN 119.57-00.92 HII 00 21 16 +61 43.5           ~ 39 0
4 SH 2-175 HII 00 27 17.09 +64 42 23.3   12.26 11.37     ~ 45 1
5 SH 2-177 HII 00 31.5 +62 28           ~ 25 0
6 SH 2-180 HII 00 48.8 +62 55           ~ 11 0
7 GAL 122.6+01.6 HII 00 49 01.3 +64 19 14           ~ 2 0
8 NGC 281 HII 00 52 25.1 +56 33 54           ~ 251 1
9 LBN 623 HII 01 00.0 +60 59           ~ 33 2
10 SH 2-186 HII 01 08 50.51 +63 07 34.2           ~ 45 1
11 LBN 126.70-00.80 HII 01 22 58.059 +61 48 16.67           ~ 89 2
12 GAL 127.1+00.9 HII 01 27 56 +63 25.4           ~ 1 0
13 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 1064 2
14 IC 1805 OpC 02 32 52.1 +61 28 36           ~ 542 1
15 LBN 136.53-00.37 HII 02 41 43 +59 36.2           ~ 8 0
16 SH 2-194 HII 02 47.3 +61 56           ~ 16 0
17 SH 2-192 HII 02 47 24.01 +61 54 47.6           ~ 22 1
18 SH 2-193 HII 02 47 40.0 +61 58 36           ~ 19 0
19 GAL 137.8-01.0 HII 02 48.9 +58 26           ~ 3 0
20 SH 2-198 HII 02 50 02 +59 42.0           ~ 14 0
21 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
22 SH 2-196 HII 02 51 33.7 +62 12 42           ~ 24 1
23 LBN 139.57+02.70 HII 03 15 +60.9           ~ 6 0
24 LBN 140.07+01.64 HII 03 18.9 +59 38           ~ 36 0
25 LBN 143.37-02.20 HII 03 22 59 +54 49.7           ~ 15 0
26 87GB 032059.1+544556 HII 03 24 46.0 +54 56 30           ~ 20 0
27 [LG97] B03211+6018 HII 03 25 10 +60 28.7           ~ 7 0
28 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
29 BFS 28 HII 03 30.1 +59 42           ~ 5 0
30 SH 2-205 HII 03 52 14 +53 25.0           ~ 40 0
31 LBN 145.80+02.83 HII 03 55.7 +57 26           ~ 11 0
32 NGC 1491 HII 04 03 15.9 +51 18 54           ~ 117 0
33 SH 2-209 HII 04 11 06.7 +51 09 44           ~ 105 0
34 Cl Waterloo 1 OpC 04 18 45.9 +52 51 55           ~ 85 0
35 LBN 151.25+02.12 HII 04 19 41.01 +53 08 31.3           ~ 70 2
36 LBN 154.69+02.43 HII 04 36 57 +50 52.6           ~ 42 0
37 SH 2-212 HII 04 40 36.52 +50 27 44.3           ~ 102 2
38 LBN 159.33+02.55 HII 04 56 05.5 +47 22 33           ~ 73 0
39 LBN 159.17+03.33 HII 04 58 45.7 +47 59 36           ~ 86 1
40 LBN 784 HII 05 13 25.5 +37 27 01           ~ 83 0
41 SH 2-229 HII 05 16 16.1 +34 32 31           ~ 29 0
42 LBN 165.93+02.44 HII 05 17.3 +42 12           ~ 8 0
43 LBN 168.71+00.89 HII 05 19.8 +38 57           ~ 12 0
44 SH 2-236 HII 05 22.6 +33 22           ~ 36 1
45 LBN 168.13+02.97 HII 05 27 10 +40 37.5           ~ 11 0
46 IC 417 HII 05 28 03 +34 24.7           ~ 59 0
47 NGC 1931 OpC 05 31 23 +34 14.0     10.1     ~ 136 0
48 SH 2-233 HII 05 38 31.5 +35 51 19           ~ 71 1
49 SH 2-231 Y*O 05 39 13.2 +35 45 48           ~ 135 0
50 SH 2-235 HII 05 41.1 +35 50           ~ 236 0
51 SH 2-232 HII 05 42 28 +36 11.4           ~ 56 0
52 SH 2-242 HII 05 51 54.8 +27 01 56           ~ 56 1
53 SH 2-241 HII 06 04.1 +30 15           ~ 58 1
54 LBN 189.02+00.91 HII 06 08 23 +21 35.3           ~ 73 0
55 NAME Lower's Nebula HII 06 08 44 +15 40.5           ~ 34 0
56 LBN 195.63-02.51 HII 06 09 39 +12 59.4           ~ 11 0
57 NGC 2175 OpC 06 09 39 +20 29.2   7.0 6.8     ~ 270 3
58 LBN 196.79-03.15 HII 06 10 12.5179825916 +12 48 48.261812212   16.65 15.79     ~ 65 0
59 SH 2-259 HII 06 11 23.57 +17 26 31.8           ~ 35 1
60 LBN 192.48-00.21 HII 06 11 59 +18 03.3           ~ 96 0
61 SH 2-256 HII 06 12 36 +17 56.9           ~ 59 1
62 SH 2-257 HII 06 12 43.57 +17 59 33.1           ~ 135 1
63 IC 2162 HII 06 13 04.1 +17 58 44           ~ 372 2
64 SH 2-258 HII 06 13 28 +17 55.5           ~ 78 0
65 LBN 196.49-01.60 HII 06 14 38.29 +13 49 41.0           ~ 169 1
66 SH 2-272 HII 06 15.0 +12 20   13.76 12.98     ~ 28 2
67 SH 2-271 HII 06 15.2 +12 22           ~ 86 1
68 LBN 196.21-01.17 HII 06 15 54.5 +14 17 57           ~ 53 2
69 LBN 188.69+04.25 HII 06 22 32 +22 58.5           ~ 48 1
70 SH 2-253 HII 06 25.8 +20 01           ~ 22 0
71 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
72 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
73 NAME Cyg Arm PoG 20 02 +40.0           ~ 163 0
74 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0
75 SH 2-121 HII 21 05 16 +49 39.9           ~ 31 0
76 SH 2-129 HII 21 11.8 +59 57           ~ 31 0
77 [KC97c] G099.1+07.4 HII 21 17 43.7 +60 04 45           ~ 2 0
78 LBN 096.23+02.55 HII 21 28 42 +54 37.0           ~ 54 0
79 SH 2-128 HII 21 32 09.9 +55 52 53           ~ 173 1
80 SH 2-131 HII 21 37 07 +57 30.9           ~ 51 1
81 LBN 094.79-01.77 HII 21 38 26 +50 23.1           ~ 39 0
82 CTB 104b Rad 21 39.5 +50 31           ~ 2 0
83 BFS 8 HII 21 41 16.8 +52 38 40           ~ 11 0
84 Ass Cep OB 2 As* 21 51 +60.0           ~ 303 0
85 BGE 2153+57 HII 21 54.6 +57 36           ~ 9 0
86 BFS 10 HII 21 56 30.40 +58 01 43.1           ~ 21 1
87 LBN 105.48+07.80 HII 21 57.2 +64 41           ~ 19 0
88 LBN 104.28+02.09 HII 22 12 44.2 +58 59 56           ~ 41 0
89 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 668 2
90 LBN 102.79-00.92 HII 22 19 09.0 +56 04 45           ~ 109 0
91 IRAS 22172+5549 Y*O 22 19 09.14787 +56 05 00.0380           ~ 105 0
92 LBN 104.39+01.32 HII 22 22 11.6 +58 44 18           ~ 39 0
93 SH 2-145 HII 22 25.5 +64 18           ~ 23 1
94 BWE 2226+6122 bub 22 28 38.4 +61 37 51           ~ 33 1
95 LDN 1206 DNe 22 28 52.2 +64 13 43           ~ 70 0
96 LBN 108.88+06.09 HII 22 29 15.9 +64 51 08           ~ 16 0
97 SH 2-138 HII 22 32 45.7 +58 28 20           ~ 115 2
98 LBN 106.32-00.35 HII 22 35.0 +58 13           ~ 26 0
99 SH 2-142 HII 22 47 32 +58 02.9           ~ 100 1
100 SH 2-143 HII 22 50.2 +57 42           ~ 19 0
101 LBN 108.96+01.70 HII 22 51.5 +61 10           ~ 26 0
102 SH 2-147 HII 22 55.7 +58 28           ~ 30 1
103 SH 2-149 HII 22 56 16.90 +58 31 22.8           ~ 61 1
104 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 760 2
105 SH 2-148 HII 22 56 18.0 +58 31 00           ~ 70 0
106 LBN 110.11+02.44 HII 22 57 06 +62 38.2           ~ 103 0
107 LBN 108.78-01.01 HII 22 58 37 +58 46.8           ~ 57 0
108 SH 2-152 HII 22 58 40.8107767416 +58 46 59.226036024           ~ 147 1
109 LBN 108.59-02.73 HII 23 03 26.5 +57 13 30           ~ 19 0
110 IC 1470 HII 23 05 09.9 +60 14 31   11.5       ~ 180 2
111 LBN 112.52+03.75 HII 23 05.8 +64 40           ~ 14 0
112 BFS 17 HII 23 05 58.7 +60 15 01           ~ 11 0
113 NGC 7538 OpC 23 13 37 +61 30.0           ~ 920 1
114 SH 2-161 HII 23 15 29.3 +61 51 43           ~ 15 0
115 SH 2-159 Y*O 23 15 31.2384366062 +61 07 10.181362705           ~ 188 1
116 LBN 111.14-00.72 HII 23 16 03.94 +60 02 00.9           ~ 102 2
117 NGC 7635 HII 23 20 48.3 +61 12 06           ~ 179 2
118 LBN 113.53-00.67 HII 23 32 57.9 +60 48 01           ~ 38 0
119 LBN 113.05-04.51 HII 23 38 23.7 +59 58 40           ~ 24 0
120 LBN 114.55+00.22 HII 23 39.8 +61 56           ~ 38 0
121 LBN 114.63-00.85 HII 23 40 11 +60 57.6           ~ 17 0
122 LBN 115.71-01.61 HII 23 52 56.5 +60 29 04           ~ 41 0
123 SH 2-169 HII 23 54.0 +60 22           ~ 22 0
124 NAME Local Arm reg ~ ~           ~ 649 0
125 NAME Sct-Cen PoG ~ ~           ~ 286 0

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