2018PASP..130k4301W

Query : 2018PASP..130k4301W

2018PASP..130k4301W - Publ. Astron. Soc. Pac., 130, part no 11, 4301-114301 (2018/November-0)

Spectroscopic identification and chemical distribution of HII regions in the Galactic anti-center area from LAMOST.

WANG L.-L., LUO A.-L., HOU W., WANG M.-X., DU B., QIN L. and HAN J.-S.

Abstract (from CDS):

We spectroscopically identify 101 Galactic HII regions using spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey, cross-matched with an HII region catalog derived from the all-sky Wide-Field Infrared Survey Explorer (WISE) data. Among all HII regions in our sample, 47 sources are newly confirmed. Spatially, most of our identified HII regions are located in the anti-center area of the Galaxy. For each of the HII regions, we accurately extract and measure the nebular emission lines of the spectra, and estimate the oxygen abundances using the strong-line method. We focus on the abundance distribution of HII regions in the Galactic anti-center area. Accordingly, we derive the oxygen abundance gradient with a slope of -0.036 ± 0.004 dex kpc–1, covering a range of RG from 8.1 to 19.3 kpc. In particular, we also fit the outer disk objects with a slope of -0.039 ± 0.012 dex kpc–1, which indicates that there is no flattening of the radial oxygen gradient in the outer Galactic disk.

Abstract Copyright: © 2018. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s):

VizieR on-line data: <Available at CDS (J/PASP/130/k4301): table1.dat table2.dat>

Simbad objects: 102

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Number of rows : 102
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 [LG97] B03211+6018 HII 03 25 10 +60 28.7           ~ 7 0
2 [ABB2014] WISE G149.063-01.974 HII 03 51 32 +51 31.3           ~ 1 0
3 [ABB2014] WISE G147.984-00.335 HII 03 52 50 +53 28.4           ~ 2 0
4 [ABB2014] WISE G146.144+03.093 HII 03 58 22 +57 17.0           ~ 1 0
5 [ABB2014] WISE G149.053+00.393 HII 04 01 28 +53 20.4           ~ 1 0
6 NGC 1491 HII 04 03 15.9 +51 18 54           ~ 117 0
7 [ABB2014] WISE G150.860-00.666 HII 04 05 45 +51 21.0           ~ 1 0
8 [ABB2014] WISE G151.606-00.373 HII 04 10 32 +51 03.9           ~ 1 0
9 SH 2-209 HII 04 11 06.7 +51 09 44           ~ 105 0
10 [ABB2014] WISE G151.273+01.961 HII 04 19 28.5 +52 59 29           ~ 2 0
11 LBN 151.25+02.12 HII 04 19 41.01 +53 08 31.3           ~ 70 2
12 [ABB2014] WISE G151.205+02.516 HII 04 21 45 +53 25.5           ~ 1 0
13 [ABB2014] WISE G152.687+02.889 HII 04 30 22 +52 37.3           ~ 1 0
14 LBN 784 HII 05 13 25.5 +37 27 01           ~ 83 0
15 [ABB2014] WISE G173.156-03.442 HII 05 14 40 +32 45.1           ~ 2 0
16 [ABB2014] WISE G172.080-02.258 HII 05 16 18 +34 18.9           ~ 4 0
17 [ABB2014] WISE G168.750+00.873 HII 05 19 29 +38 50.4           ~ 3 0
18 [ABB2014] WISE G170.051+00.708 HII 05 22 34 +37 40.6           ~ 1 0
19 [ABB2014] WISE G173.588-01.606 HII 05 23 02 +33 27.1           ~ 3 0
20 [AAJ2015] G173.581-01.577 HII 05 23 07 +33 28.3           ~ 4 0
21 6C 051949+335341 HII 05 23 09.58 +33 58 14.1           ~ 26 1
22 [ABB2014] WISE G171.171+00.445 HII 05 24 39 +36 36.3           ~ 1 0
23 [ABB2014] WISE G171.602+00.563 HII 05 26 20 +36 18.8           ~ 2 0
24 [ABB2014] WISE G169.823+01.803 HII 05 26 31 +38 28.8           ~ 1 0
25 [ABB2014] WISE G169.851+01.930 HII 05 27 08 +38 31.7           ~ 2 0
26 [ABB2014] WISE G168.171+03.054 HII 05 27 09 +40 32.9           ~ 1 0
27 IC 417 HII 05 28 03 +34 24.7           ~ 59 0
28 [ABB2014] WISE G171.046+01.906 HII 05 30 24 +37 31.2           ~ 1 0
29 [ABB2014] WISE G173.598+00.281 HII 05 30 37 +34 29.8           ~ 1 0
30 [ABB2014] WISE G173.937+00.298 HII 05 31 35 +34 13.3           ~ 2 0
31 [ABB2014] WISE G177.291-01.339 HII 05 33 46 +30 31.1           ~ 1 0
32 [ABB2014] WISE G172.231+02.167 HII 05 34 44 +36 40.2           ~ 1 0
33 [ABB2014] WISE G209.107-19.510 HII 05 34 59 -05 31.6           ~ 2 0
34 [ABB2014] WISE G209.037-19.377 HII 05 35 21 -05 24.5           ~ 1 0
35 [ABB2014] WISE G208.445-18.994 HII 05 35 42 -04 44.2           ~ 2 0
36 [ABB2014] WISE G174.254+01.555 HII 05 37 33 +34 38.2           ~ 1 0
37 [ABB2014] WISE G177.696-00.311 HII 05 38 48 +30 43.8           ~ 1 0
38 GAL 173.60+02.80 HII 05 40 59.7 +35 51 04           ~ 9 0
39 IRAS 05391-0152 HII 05 41 37 -01 50.7           ~ 20 0
40 SH 2-232 HII 05 42 28 +36 11.4           ~ 56 0
41 [ABB2014] WISE G179.682-00.564 HII 05 42 40 +28 54.7           ~ 1 0
42 [ABB2014] WISE G207.068-16.256 HII 05 43 01 -02 18.8           ~ 1 0
43 IC 2144 HII 05 50 14 +23 52.3           ~ 9 0
44 [ABB2014] WISE G182.349+00.148 HII 05 51 41 +27 00.0           ~ 2 0
45 [ABB2014] WISE G183.947+00.835 HII 05 57 56 +25 58.1           ~ 1 0
46 [ABB2014] WISE G183.370+01.316 HII 05 58 31 +26 42.5           ~ 1 0
47 [ABB2014] WISE G190.977-00.851 HII 06 06 37 +19 01.3           ~ 1 0
48 [ABB2014] WISE G181.471+04.599 HII 06 07 17 +29 58.3           ~ 1 0
49 LBN 189.02+00.91 HII 06 08 23 +21 35.3           ~ 73 0
50 LBN 194.20-01.99 HII 06 08 52 +15 42.3           ~ 3 0
51 SH 2-252 B HII 06 08 58 +20 38.5           ~ 19 1
52 IRAS 06063+2040 HII 06 09 21 +20 39.4           ~ 44 0
53 [AAL2018] G190.051+00.537 HII 06 09 52 +20 30.5           ~ 3 0
54 [ABB2014] WISE G190.095+00.516 HII 06 09 53 +20 27.5           ~ 2 0
55 IRAS 06078+2037 HII 06 10 53 +20 36.6           ~ 4 0
56 [ABB2014] WISE G192.499-00.142 HII 06 12 21 +18 02.0           ~ 2 0
57 [ABB2014] WISE G196.448-01.673 HII 06 14 37 +13 50.0           ~ 3 0
58 [ABB2014] WISE G191.916+00.837 HII 06 14 48 +19 00.8           ~ 1 0
59 [ABB2014] WISE G192.274+00.783 HII 06 15 19 +18 40.5           ~ 1 0
60 IRAS 06127+1418 HII 06 15 35 +14 17.1           ~ 14 0
61 [ABB2014] WISE G196.220-01.204 HII 06 15 53 +14 15.5           ~ 2 0
62 [AAL2018] G188.546+03.668 HII 06 18 38 +23 19.6           ~ 3 0
63 [ABB2014] WISE G200.070-01.609 HII 06 21 52 +10 40.5           ~ 1 0
64 [ABB2014] WISE G201.806+00.091 HII 06 31 16 +09 55.9           ~ 1 0
65 [AAL2018] G208.741-02.633 HII 06 34 24 +02 31.4           ~ 4 0
66 [ABB2014] G208.506-02.304 HII 06 35 09 +02 53.0           ~ 2 0
67 [ABB2014] WISE G201.535+01.597 HII 06 36 12 +10 51.9           ~ 4 0
68 [ABB2014] WISE G206.008-00.413 HII 06 37 17 +05 58.2           ~ 1 0
69 [ABB2014] WISE G210.187-02.169 HII 06 38 43 +01 27.1           ~ 1 0
70 [ABB2014] WISE G202.968+02.083 HII 06 40 37 +09 48.9           ~ 4 0
71 [ABB2014] WISE G212.021-01.309 HII 06 45 07 +00 12.8           ~ 1 0
72 [ABB2014] WISE G216.673+01.122 HII 07 02 16 -02 48.9           ~ 1 0
73 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
74 [ABB2014] WISE G066.375+00.583 HII 19 56 11 +29 40.6           ~ 1 0
75 [ABB2014] WISE G068.168+01.058 HII 19 58 39 +31 27.2           ~ 1 0
76 [ABB2014] WISE G071.764+03.076 HII 19 59 25 +35 34.3           ~ 2 0
77 [AAL2018] G070.099+01.629 HII 20 01 09 +33 23.8           ~ 2 0
78 [ABB2014] WISE G069.118+00.793 HII 20 02 04 +32 07.3           ~ 1 0
79 [ABB2014] WISE G066.659-01.167 HII 20 03 42 +28 59.8           ~ 1 0
80 [ABB2014] WISE G076.917+02.054 HII 20 17 48 +39 20.8           ~ 2 0
81 [ABB2014] WISE G076.951+01.718 HII 20 19 20.1 +39 11 15           ~ 2 0
82 GPSR 076.188+0.098 HII 20 23 58 +37 38.4           ~ 6 1
83 [ABB2014] WISE G078.516+01.187 HII 20 26 15 +40 10.0           ~ 3 0
84 [ABB2014] WISE G080.079+02.145 HII 20 26 55 +41 59.7           ~ 2 0
85 [ABB2014] WISE G076.309-00.667 HII 20 27 25 +37 17.6           ~ 1 0
86 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 453 1
87 GAL 077.96-00.01 HII 20 29 36.72 +39 01 21.9           ~ 42 1
88 [ABB2014] WISE G082.253+02.953 HII 20 30 16 +44 13.8           ~ 2 0
89 [ABB2014] WISE G078.177-00.363 HII 20 31 42.8 +38 58 13           ~ 7 0
90 [ABB2014] WISE G077.059-01.285 HII 20 32 09 +37 32.2           ~ 1 0
91 [ABB2014] WISE G083.792+03.269 HII 20 33 57 +45 39.4           ~ 3 0
92 [ABB2014] WISE G081.470+01.030 HII 20 36 13 +42 27.4           ~ 3 0
93 [ABB2014] WISE G081.920+00.138 HII 20 41 31.8 +42 16 24           ~ 7 0
94 [AAL2018] G084.221+01.835 HII 20 41 56 +45 07.8           ~ 2 0
95 [ABB2014] WISE G082.721+00.646 HII 20 42 02 +43 13.0           ~ 2 0
96 [ABB2014] G082.566+00.362 HII 20 42 32.5 +42 56 46           ~ 8 0
97 [ABB2014] WISE G084.157+01.146 HII 20 44 47 +44 39.3           ~ 1 0
98 GAL 094.48-00.3 HII 21 33 10 +51 16.2           ~ 2 0
99 [ABB2014] WISE G095.168-00.739 HII 21 38 13 +51 24.4           ~ 1 0
100 [ABB2014] WISE G094.890-01.643 HII 21 40 41 +50 32.7           ~ 1 0
101 [ABB2014] WISE G107.034-00.801 HII 22 46 20 +58 09.4           ~ 2 0
102 SH 2-148 HII 22 56 18.0 +58 31 00           ~ 70 0

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