2005ApJ...635..214E

Query : 2005ApJ...635..214E

2005ApJ...635..214E - Astrophys. J., 635, 214-242 (2005/December-2)

Chandra deep X-ray observation of a typical Galactic plane region and near-infrared identification.

EBISAWA K., TSUJIMOTO M., PAIZIS A., HAMAGUCHI K., BAMBA A., CUTRI R., KANEDA H., MAEDA Y., SATO G., SENDA A., UENO M., YAMAUCHI S., BECKMANN V., COURVOISIER T.J.-L., DUBATH P. and NISHIHARA E.

Abstract (from CDS):

Using the Chandra Advanced CCD Imaging Spectrometer Imaging array (ACIS-I), we have carried out a deep hard X-ray observation of the Galactic plane region at (l,b)~(28°.5,0°.0), where no discrete X-ray source had been reported previously. We have detected 274 new point X-ray sources (4 σ confidence), as well as strong Galactic diffuse emission within two partially overlapping ACIS-I fields (∼250 arcmin2 in total). The point-source sensitivity was ∼3x10–15 ergs/s/cm2 in the hard X-ray band (2-10 keV) and ∼2x10–16 ergs/s/cm2 in the soft band (0.5-2 keV). The sum of all the detected point-source fluxes accounts for only ∼10% of the total X-ray flux in the field of view. Even hypothesizing a new population of much dimmer and numerous Galactic point sources, the total observed X-ray flux cannot be explained. Therefore, we conclude that X-ray emission from the Galactic plane has a truly diffuse origin. Removing point sources brighter than ∼3x10–15 ergs/s/cm2 (2-10 keV), we have determined the Galactic diffuse X-ray flux to be 6.5x10–11 ergs/s/cm2/deg2 (2-10 keV). Only 26 point sources were detected in both the soft and hard bands, indicating that there are two distinct classes of X-ray sources distinguished by their spectral hardness ratios. The surface number density of the hard sources is only slightly higher than that measured at the high Galactic latitude regions, indicating that the majority of the hard sources are background AGNs. Following up the Chandra observation, we have performed a near-infrared (NIR) survey with SofI at ESO/NTT. Almost all the soft X-ray sources have been identified in the NIR, and their spectral types are consistent with main-sequence stars, suggesting that most of them are nearby X-ray-active stars. On the other hand, only 22% of the hard sources had NIR counterparts, which are presumably Galactic. From X-ray and NIR spectral study, they are most likely to be quiescent cataclysmic variables. Our observation suggests a population of ≳104 cataclysmic variables in the entire Galactic plane fainter than ∼2x1033 ergs/s. We have carried out a precise spectral study of the Galactic diffuse X-ray emission excluding the point sources. Confirming previous results, we have detected prominent emission lines from highly ionized heavy elements in the diffuse emission. In particular, the central energy of the iron emission line was determined to be 6.52+0.08–0.14 keV (90% confidence), which is significantly lower than what is expected from a plasma in thermal equilibrium. The downward shift of the iron line center energy suggests nonequilibrium ionization states of the plasma or the presence of a nonthermal process to produce 6.4 keV fluorescent lines.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxy: Structure - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/ApJ/635/214): table1.dat table2.dat>

Nomenclature: Table 1: CXOGPE JHHMMSS.s+DDMMSS N=274 = [ETP2005] X NNN (Nos 1-274). Table 2: [ETP2005] NIR NNNNN (Nos 1-32398).

CDS comments: Fig. 12 : CXOU J184357-035441 (incomplete format) = EQ J184357-035441 in SIMBAD

Simbad objects: 280

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Number of rows : 280
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 939 0
2 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14414 0
3 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2265 1
4 CXOGPE J184251.7-035111 X 18 42 51.77 -03 51 11.2           ~ 1 0
5 CXOGPE J184253.5-034919 X 18 42 53.53 -03 49 19.6           ~ 1 0
6 SSTGLMC G028.5047+00.1060 X 18 42 58.33 -03 53 27.2           ~ 2 0
7 2MASS J18430043-0353486 X 18 43 00.4293591168 -03 53 48.654415068           ~ 2 0
8 CXOGPE J184301.5-035047 X 18 43 01.50 -03 50 47.3           ~ 1 0
9 CXOGPE J184301.8-035442 X 18 43 01.83 -03 54 42.4           ~ 1 0
10 CXOGPE J184306.1-035454 X 18 43 06.14 -03 54 54.8           ~ 1 0
11 CXOGPE J184306.8-035537 X 18 43 06.88 -03 55 37.0           ~ 1 0
12 CXOGPE J184307.2-034955 X 18 43 07.25 -03 49 56.5           ~ 1 0
13 CXOGPE J184307.2-034858 X 18 43 07.27 -03 48 58.4           ~ 1 0
14 CXOGPE J184307.9-035317 X 18 43 07.98 -03 53 17.1           ~ 1 0
15 [ETP2005] X 12 X 18 43 08.7075585768 -03 50 03.233973732           ~ 1 0
16 CXOGPE J184310.8-035535 X 18 43 10.86 -03 55 35.5           ~ 1 0
17 CXOGPE J184311.4-035950 X 18 43 11.41 -03 59 50.1           ~ 1 0
18 CXOGPE J184311.8-035823 X 18 43 11.81 -03 58 23.7           ~ 1 0
19 CXOGPE J184312.1-034816 X 18 43 12.20 -03 48 16.8           ~ 1 0
20 CXOGPE J184312.4-035736 X 18 43 12.39 -03 57 36.4           ~ 1 0
21 CXOGPE J184312.8-035042 X 18 43 12.87 -03 50 42.0           ~ 1 0
22 2MASS J18431289-0349369 * 18 43 12.9624743976 -03 49 36.996922704           ~ 1 0
23 CXOGPE J184313.3-040236 X 18 43 13.36 -04 02 36.1           ~ 1 0
24 2MASS J18431378-0357073 X 18 43 13.7909040432 -03 57 07.374537612           ~ 2 0
25 [ETP2005] X 22 * 18 43 14.5251601992 -03 52 11.208674172           ~ 1 0
26 2MASS J18431499-0358111 * 18 43 14.9699447640 -03 58 11.890443684           ~ 1 0
27 CXOGPE J184315.2-035617 X 18 43 15.29 -03 56 17.2           ~ 1 0
28 TYC 5121-9-1 * 18 43 15.3032755896 -03 54 19.111696812   12.76 12.38     ~ 1 0
29 2MASS J18431539-0350483 X 18 43 15.4010260176 -03 50 48.392807496           ~ 1 0
30 CXOGPE J184315.5-034758 X 18 43 15.54 -03 47 58.5           ~ 1 0
31 CXOGPE J184315.8-035640 X 18 43 15.81 -03 56 40.4           ~ 1 0
32 CXOGPE J184317.4-035732 X 18 43 17.43 -03 57 32.7           ~ 1 0
33 CXOGPE J184317.4-034852 X 18 43 17.47 -03 48 52.6           ~ 1 0
34 [ETP2005] NIR 1031 * 18 43 17.4831600768 -03 55 59.748415500           ~ 2 0
35 CXOGPE J184317.9-034714 X 18 43 17.97 -03 47 14.9           ~ 1 0
36 CXOGPE J184318.1-034732 X 18 43 18.18 -03 47 32.4           ~ 1 0
37 CXOGPE J184318.4-040054 X 18 43 18.41 -04 00 54.9           ~ 1 0
38 CXOGPE J184318.5-035852 X 18 43 18.59 -03 58 52.1           ~ 1 0
39 CXOGPE J184318.7-035425 X 18 43 18.73 -03 54 25.2           ~ 1 0
40 CXOGPE J184318.9-035327 X 18 43 18.95 -03 53 27.3           ~ 2 0
41 CXOGPE J184319.0-035933 X 18 43 19.01 -03 59 33.4           ~ 1 0
42 CXOGPE J184319.2-035731 X 18 43 19.22 -03 57 31.9           ~ 1 0
43 CXOGPE J184319.4-040136 X 18 43 19.48 -04 01 35.5           ~ 1 0
44 CXOGPE J184319.6-035502 X 18 43 19.61 -03 55 02.1           ~ 1 0
45 CXOGPE J184320.5-034859 X 18 43 20.55 -03 48 59.9           ~ 1 0
46 CXOGPE J184320.5-034903 X 18 43 20.56 -03 49 03.3           ~ 1 0
47 CXOGPE J184320.8-035246 X 18 43 20.86 -03 52 46.5           ~ 1 0
48 CXOGPE J184321.1-035215 X 18 43 21.10 -03 52 15.0           ~ 1 0
49 CXOGPE J184321.1-035430 X 18 43 21.11 -03 54 30.0           ~ 2 0
50 CXOGPE J184321.2-034931 X 18 43 21.29 -03 49 31.4           ~ 1 0
51 CXOGPE J184321.3-040102 X 18 43 21.37 -04 01 02.9           ~ 1 0
52 CXOGPE J184321.6-035528 X 18 43 21.62 -03 55 28.0           ~ 1 0
53 CXOGPE J184321.7-040039 X 18 43 21.81 -04 00 39.6           ~ 1 0
54 [ETP2005] NIR 2354 * 18 43 21.8254653216 -03 53 03.154228116           ~ 2 0
55 CXOGPE J184322.0-035426 X 18 43 22.09 -03 54 26.4           ~ 1 0
56 CXOGPE J184322.8-035228 X 18 43 22.82 -03 52 28.6           ~ 1 0
57 CXOGPE J184322.9-035753 X 18 43 22.99 -03 57 52.7           ~ 2 0
58 CXOGPE J184323.0-035725 X 18 43 23.03 -03 57 25.3           ~ 1 0
59 [ETP2005] NIR 2844 * 18 43 23.3177875632 -03 48 52.121025000           ~ 1 0
60 CXOGPE J184323.3-035805 LP? 18 43 23.4052307376 -03 58 05.122933320           ~ 2 0
61 CXOGPE J184323.6-035314 X 18 43 23.60 -03 53 13.9           ~ 2 0
62 CXOGPE J184323.6-035140 X 18 43 23.68 -03 51 40.6           ~ 1 0
63 CXOGPE J184323.7-040026 X 18 43 23.72 -04 00 26.0           ~ 1 0
64 CXOGPE J184323.8-035331 X 18 43 23.89 -03 53 31.4           ~ 1 0
65 CXOGPE J184323.9-035758 X 18 43 23.96 -03 57 58.9           ~ 1 0
66 CXOGPE J184324.3-040338 X 18 43 24.33 -04 03 38.5           ~ 1 0
67 CXOGPE J184324.4-035349 X 18 43 24.47 -03 53 49.5           ~ 2 0
68 CXOGPE J184324.8-035916 X 18 43 24.81 -03 59 16.2           ~ 1 0
69 CXOGPE J184325.0-035751 X 18 43 25.0474959312 -03 57 51.194496960           ~ 1 0
70 [ETP2005] NIR 3450 X 18 43 25.2367935960 -03 59 14.880484644           ~ 1 0
71 CXOGPE J184326.1-035649 X 18 43 26.14 -03 56 49.7           ~ 1 0
72 CXOGPE J184326.4-035705 X 18 43 26.41 -03 57 05.9           ~ 1 0
73 2MASS J18432835-0407331 X 18 43 28.3590872856 -04 07 33.083860260           ~ 2 0
74 EM* MWC 953 Ae* 18 43 28.4237099640 -03 46 17.027278752 11.86 11.9 10.8     B2Ve 29 0
75 CXOGPE J184328.6-035622 X 18 43 28.67 -03 56 22.8           ~ 1 0
76 CXOGPE J184328.9-035733 LP? 18 43 28.9176028200 -03 57 33.225315840           ~ 3 0
77 CXOGPE J184329.1-035942 X 18 43 29.11 -03 59 42.3           ~ 1 0
78 [ETP2005] NIR 5148 * 18 43 29.2645743360 -03 50 50.644293720           ~ 1 0
79 CXOGPE J184329.3-035648 X 18 43 29.32 -03 56 48.7           ~ 1 0
80 CXOGPE J184329.3-040519 X 18 43 29.34 -04 05 18.6           ~ 1 0
81 CXOGPE J184329.5-034656 X 18 43 29.55 -03 46 56.5           ~ 1 0
82 [ETP2005] NIR 5359 X 18 43 29.8052859288 -03 50 14.167637880           ~ 2 0
83 [ETP2005] NIR 5569 * 18 43 30.1980881952 -03 53 44.106487116           ~ 1 0
84 CXOGPE J184330.2-035118 X 18 43 30.20 -03 51 18.2           ~ 1 0
85 CXOGPE J184330.2-035411 LP? 18 43 30.2652994560 -03 54 11.105447868           ~ 2 0
86 CXOGPE J184330.3-035943 X 18 43 30.35 -03 59 43.3           ~ 1 0
87 CXOGPE J184330.5-040350 X 18 43 30.52 -04 03 50.3           ~ 1 0
88 [ETP2005] NIR 5758 PM* 18 43 30.6288807744 -03 53 51.645247260           ~ 2 0
89 [ETP2005] NIR 5825 * 18 43 30.7768870920 -04 01 02.568274068           ~ 2 0
90 CXOGPE J184330.8-040045 X 18 43 30.81 -04 00 46.0           ~ 1 0
91 CXOGPE J184331.2-035029 X 18 43 31.28 -03 50 29.1           ~ 1 0
92 CXOGPE J184331.3-034618 X 18 43 31.30 -03 46 18.0           ~ 1 0
93 CXOGPE J184331.4-035515 X 18 43 31.47 -03 55 15.8           ~ 1 0
94 [ETP2005] NIR 6217 * 18 43 31.5785463240 -03 56 49.387701696           ~ 1 0
95 CXOGPE J184331.7-035126 X 18 43 31.70 -03 51 26.8           ~ 1 0
96 [ETP2005] NIR 6289 * 18 43 31.7129658888 -03 48 39.072101976           ~ 1 0
97 CXOGPE J184331.7-035956 X 18 43 31.72 -03 59 56.1           ~ 1 0
98 CXOGPE J184331.7-035739 X 18 43 31.76 -03 57 39.3           ~ 1 0
99 CXOGPE J184331.7-035717 X 18 43 31.78 -03 57 17.2           ~ 2 0
100 [ETP2005] X 97 X 18 43 32.3649979896 -03 54 44.658706500           ~ 1 0
101 [ETP2005] NIR 6584 X 18 43 32.3658048096 -04 00 50.693079276           ~ 1 0
102 CXOGPE J184332.4-040849 X 18 43 32.47 -04 08 49.7           ~ 1 0
103 2MASS J18433257-0404190 WR* 18 43 32.58 -04 04 19.0           WN7 3 0
104 CXOGPE J184332.6-034907 X 18 43 32.67 -03 49 07.6           ~ 1 0
105 CXOGPE J184333.3-035436 X 18 43 33.36 -03 54 36.0           ~ 1 0
106 [ETP2005] NIR 7055 X 18 43 33.4152791236 -03 50 19.891010775           ~ 1 0
107 2MASS J18433350-0403541 * 18 43 33.5080754808 -04 03 54.211232628           ~ 2 0
108 CXOGPE J184333.9-035253 X 18 43 33.93 -03 52 52.9           ~ 2 0
109 CXOGPE J184334.1-035523 X 18 43 34.12 -03 55 23.8           ~ 2 0
110 CXOGPE J184334.1-035047 X 18 43 34.13 -03 50 47.5           ~ 1 0
111 CXOGPE J184334.6-041032 X 18 43 34.63 -04 10 32.2           ~ 1 0
112 CXOGPE J184334.7-034604 X 18 43 34.79 -03 46 04.2           ~ 1 0
113 2MASS J18433529-0400448 * 18 43 35.3042127816 -04 00 44.872882524           ~ 1 0
114 [ETP2005] NIR 8139 X 18 43 35.3859250416 -03 55 56.480836296           ~ 1 0
115 CXOGPE J184335.4-040112 X 18 43 35.40 -04 01 13.0           ~ 1 0
116 CXOGPE J184335.4-035714 X 18 43 35.41 -03 57 14.8           ~ 1 0
117 CXOGPE J184335.4-035846 X 18 43 35.46 -03 58 45.6           ~ 1 0
118 [ETP2005] X 115 X 18 43 35.6241688608 -03 46 02.065433412           ~ 1 0
119 CXOGPE J184335.8-034652 X 18 43 35.84 -03 46 52.7           ~ 1 0
120 [ETP2005] NIR 8433 X 18 43 35.8540404216 -03 58 53.984732592           ~ 1 0
121 [ETP2005] NIR 8454 X 18 43 35.8896015528 -03 57 58.797458892           ~ 1 0
122 CXOGPE J184336.1-040154 X 18 43 36.15 -04 01 55.4           ~ 1 0
123 CXOGPE J184336.3-035550 X 18 43 36.39 -03 55 50.1           ~ 1 0
124 CXOGPE J184336.4-035553 X 18 43 36.43 -03 55 53.7           ~ 1 0
125 [ETP2005] NIR 8957 X 18 43 36.7624830360 -03 57 47.883436272           ~ 1 0
126 CXOGPE J184336.8-035429 X 18 43 36.85 -03 54 29.4           ~ 1 0
127 CXOGPE J184337.0-040234 X 18 43 37.01 -04 02 34.5           ~ 1 0
128 [ETP2005] NIR 9480 * 18 43 37.6746781632 -03 57 44.237293524           ~ 1 0
129 CXOGPE J184337.8-040353 X 18 43 37.87 -04 03 53.2           ~ 1 0
130 2MASS J18433817-0409465 * 18 43 38.1620922288 -04 09 46.521274860           ~ 1 0
131 [ETP2005] NIR 9809 X 18 43 38.2667910792 -03 52 01.303485312           ~ 1 0
132 CXOGPE J184338.5-040558 X 18 43 38.59 -04 05 58.7           ~ 1 0
133 CXOGPE J184338.6-035732 X 18 43 38.63 -03 57 32.7           ~ 2 0
134 CXOGPE J184338.7-034834 X 18 43 38.73 -03 48 34.4           ~ 1 0
135 CXOGPE J184339.0-035213 * 18 43 39.0172311360 -03 52 13.856566620           ~ 1 0
136 CXOGPE J184339.0-035444 X 18 43 39.02 -03 54 44.0           ~ 1 0
137 SSTGLMC G028.5922-00.0391 X 18 43 39.02 -03 52 45.9           ~ 1 0
138 [ETP2005] NIR 10406 X 18 43 39.2342525904 -03 52 52.476794256           ~ 2 0
139 CXOGPE J184339.2-040702 X 18 43 39.26 -04 07 02.5           ~ 1 0
140 CXOGPE J184339.3-034953 X 18 43 39.38 -03 49 53.7           ~ 1 0
141 CXOGPE J184339.5-040514 X 18 43 39.51 -04 05 14.2           ~ 1 0
142 CXOGPE J184339.7-035408 X 18 43 39.76 -03 54 08.8           ~ 1 0
143 CXOGPE J184340.3-035154 X 18 43 40.31 -03 51 54.4           ~ 1 0
144 CXOGPE J184340.6-040342 X 18 43 40.60 -04 03 42.1           ~ 1 0
145 CXOGPE J184340.9-034954 X 18 43 40.95 -03 49 54.9           ~ 1 0
146 CXOGPE J184341.0-035802 X 18 43 41.0360567640 -03 58 02.540303364           ~ 2 0
147 2MASS J18434111-0357404 * 18 43 41.1214404072 -03 57 40.495149504           ~ 1 0
148 CXOGPE J184341.5-035055 X 18 43 41.51 -03 50 55.0           ~ 1 0
149 CXOGPE J184341.8-041118 X 18 43 41.81 -04 11 18.6           ~ 1 0
150 CXOGPE J184342.1-035759 X 18 43 42.2464285920 -03 57 57.489920892           ~ 1 0
151 CXOGPE J184342.3-035507 X 18 43 42.37 -03 55 07.4           ~ 1 0
152 CXOGPE J184342.5-035941 X 18 43 42.67 -03 59 41.1           ~ 2 0
153 CXOGPE J184342.7-035424 X 18 43 42.73 -03 54 24.7           ~ 1 0
154 CXOGPE J184343.2-035156 X 18 43 43.26 -03 51 56.9           ~ 1 0
155 CXOGPE J184343.4-040451 X 18 43 43.42 -04 04 51.1           ~ 1 0
156 2MASS J18434380-0347342 * 18 43 43.8005551920 -03 47 34.229657148           ~ 1 0
157 SSTGLMC G028.4435-00.1436 X 18 43 45.03 -04 03 34.0           ~ 1 0
158 2MASS J18434503-0405015 * 18 43 45.0329567688 -04 05 01.627166688           ~ 1 0
159 [ETP2005] NIR 14512 X 18 43 45.3807083832 -03 53 16.380681684           ~ 2 0
160 CXOGPE J184345.8-040739 X 18 43 45.87 -04 07 38.7           ~ 1 0
161 CXOGPE J184346.0-040548 * 18 43 46.0581101808 -04 05 48.962144904           ~ 1 0
162 CXOGPE J184346.0-035351 X 18 43 46.0669372008 -03 53 51.993866292           ~ 1 0
163 2MASS J18434610-0403248 * 18 43 46.1075801928 -04 03 24.865318008           ~ 1 0
164 [ETP2005] NIR 15282 X 18 43 46.4438441664 -03 54 11.886355980           ~ 2 0
165 CXOGPE J184346.6-040430 X 18 43 46.62 -04 04 30.1           ~ 1 0
166 CXOGPE J184346.6-034623 X 18 43 46.66 -03 46 23.8           ~ 1 0
167 [ETP2005] NIR 15492 X 18 43 46.7159914368 -03 54 43.677413964           ~ 1 0
168 2MASS J18434671-0407078 * 18 43 46.7163129720 -04 07 07.890745296           ~ 1 0
169 [ETP2005] NIR 15573 X 18 43 46.8368652264 -04 01 26.533197444           ~ 1 0
170 [ETP2005] NIR 15657 X 18 43 46.9451023416 -04 10 32.649512736           ~ 1 0
171 CXOGPE J184347.1-040840 X 18 43 47.10 -04 08 40.6           ~ 1 0
172 [ETP2005] NIR 15778 X 18 43 47.1011755968 -03 53 18.472254504           ~ 2 0
173 ATO J280.9473-04.1417 V* 18 43 47.3681249064 -04 08 30.177430188           ~ 2 0
174 CXOGPE J184347.5-040406 X 18 43 47.55 -04 04 06.1           ~ 1 0
175 [ETP2005] NIR 16177 X 18 43 47.6281873704 -03 56 10.563855864           ~ 1 0
176 CXOGPE J184347.7-035919 X 18 43 47.79 -03 59 19.0           ~ 1 0
177 CXOGPE J184348.0-035357 X 18 43 48.04 -03 53 57.5           ~ 1 0
178 CXOGPE J184348.0-040303 X 18 43 48.08 -04 03 03.4           ~ 1 0
179 2MASS J18434867-0401362 * 18 43 48.6722431056 -04 01 36.285418452           ~ 2 0
180 CXOGPE J184348.7-040117 X 18 43 48.72 -04 01 17.6           ~ 1 0
181 CXOGPE J184349.0-035957 X 18 43 49.03 -03 59 57.1           ~ 1 0
182 CXOGPE J184349.1-040256 X 18 43 49.11 -04 02 56.4           ~ 1 0
183 CXOGPE J184349.2-040054 X 18 43 49.21 -04 00 54.1           ~ 1 0
184 CXOGPE J184349.2-035238 X 18 43 49.22 -03 52 38.3           ~ 1 0
185 CXOGPE J184349.3-040413 X 18 43 49.39 -04 04 13.7           ~ 1 0
186 [ETP2005] NIR 18344 * 18 43 50.4302779536 -04 02 29.516288352           ~ 1 0
187 CXOGPE J184350.5-040207 X 18 43 50.51 -04 02 07.2           ~ 1 0
188 [ETP2005] NIR 18522 X 18 43 50.6774735256 -03 58 52.653873036           ~ 1 0
189 CXOGPE J184350.7-035738 X 18 43 50.71 -03 57 38.8           ~ 1 0
190 CXOGPE J184351.0-035239 * 18 43 51.0956257080 -03 52 39.537463728           ~ 1 0
191 2MASS J18435181-0359222 * 18 43 51.8125439952 -03 59 22.312116168           ~ 1 0
192 CXOGPE J184352.3-040729 X 18 43 52.37 -04 07 29.9           ~ 1 0
193 CXOGPE J184352.7-040050 X 18 43 52.78 -04 00 50.1           ~ 1 0
194 CXOGPE J184352.7-035359 X 18 43 52.78 -03 53 59.3           ~ 1 0
195 CXOGPE J184352.8-040411 X 18 43 52.85 -04 04 11.4           ~ 1 0
196 [ETP2005] NIR 20390 X 18 43 53.1258102816 -03 57 59.430027708           ~ 2 0
197 CXOGPE J184353.5-035116 X 18 43 53.58 -03 51 16.3           ~ 1 0
198 CXOGPE J184354.1-035844 X 18 43 54.18 -03 58 44.0           ~ 1 0
199 CXOGPE J184354.5-035806 X 18 43 54.56 -03 58 06.3           ~ 1 0
200 CXOGPE J184354.6-035641 X 18 43 54.61 -03 56 41.5           ~ 1 0
201 [ETP2005] NIR 21470 X 18 43 54.6740153856 -03 53 36.523693500           ~ 1 0
202 ATO J280.9786-04.1288 EB? 18 43 54.87 -04 07 43.5           ~ 3 0
203 SNR G028.6-00.1 Rad 18 43 55 -03 53.0           ~ 57 1
204 [ETP2005] X 200 X 18 43 55.10 -03 58 29.6           ~ 2 0
205 CXOGPE J184355.1-040420 X 18 43 55.15 -04 04 20.1           ~ 1 0
206 CXOGPE J184355.4-035252 X 18 43 55.42 -03 52 52.9           ~ 1 0
207 CXOGPE J184355.6-035704 X 18 43 55.69 -03 57 04.3           ~ 1 0
208 CXOGPE J184355.7-035250 X 18 43 55.70 -03 52 50.2           ~ 1 0
209 CXOGPE J184355.7-040825 X 18 43 55.78 -04 08 25.8           ~ 1 0
210 [ETP2005] X 206 X 18 43 56.0016755904 -03 55 04.042261524           ~ 1 0
211 CXOGPE J184356.5-040608 X 18 43 56.59 -04 06 08.0           ~ 1 0
212 CXOGPE J184356.6-035447 X 18 43 56.68 -03 54 47.8           ~ 1 0
213 CXOGPE J184356.9-035437 X 18 43 56.90 -03 54 37.0           ~ 1 0
214 [ETP2005] X 209 * 18 43 56.9477113128 -03 57 32.755214520           ~ 1 0
215 EQ J184357-035441 X 18 43 57 -03 54.7           ~ 4 0
216 CXOGPE J184357.3-040123 X 18 43 57.35 -04 01 23.3           ~ 1 0
217 CXOGPE J184357.6-035157 X 18 43 57.68 -03 51 57.1           ~ 1 0
218 CXOGPE J184357.8-035445 X 18 43 57.87 -03 54 45.9           ~ 1 0
219 ATO J280.9910-04.1272 V* 18 43 57.8714337936 -04 07 37.954292340           ~ 2 0
220 CXOGPE J184357.9-035919 X 18 43 57.91 -03 59 19.8           ~ 1 0
221 CXOGPE J184357.9-035437 X 18 43 57.92 -03 54 37.5           ~ 1 0
222 CXOGPE J184358.3-040321 X 18 43 58.30 -04 03 21.2           ~ 1 0
223 CXOGPE J184358.5-035621 X 18 43 58.53 -03 56 21.6           ~ 1 0
224 2MASS J18435902-0351167 X 18 43 59.02 -03 51 16.8           ~ 1 0
225 CXOGPE J184359.2-035026 X 18 43 59.28 -03 50 26.2           ~ 1 0
226 TYC 5121-205-1 * 18 43 59.6592193224 -03 55 18.379781904   13.09 12.06     ~ 2 0
227 CXOGPE J184359.9-040721 X 18 43 59.92 -04 07 21.5           ~ 1 0
228 [ETP2005] NIR 25554 X 18 44 00.3689951088 -04 05 59.411528412           ~ 2 0
229 CXOGPE J184401.1-035740 X 18 44 01.13 -03 57 40.7           ~ 1 0
230 CXOGPE J184401.9-040511 X 18 44 01.93 -04 05 11.7           ~ 1 0
231 CXOGPE J184402.1-040523 X 18 44 02.13 -04 05 24.4           ~ 1 0
232 CXOGPE J184402.4-041244 X 18 44 02.44 -04 12 44.8           ~ 1 0
233 CXOGPE J184402.4-035151 X 18 44 02.45 -03 51 51.7           ~ 1 0
234 CXOGPE J184402.5-040922 X 18 44 02.56 -04 09 22.9           ~ 1 0
235 [ETP2005] NIR 27370 X 18 44 03.3087276672 -03 58 18.939812088           ~ 1 0
236 CXOGPE J184403.4-041041 X 18 44 03.47 -04 10 41.8           ~ 1 0
237 CXOGPE J184403.8-041123 X 18 44 03.84 -04 11 23.6           ~ 1 0
238 CXOGPE J184403.9-040257 X 18 44 03.92 -04 02 57.7           ~ 2 0
239 CXOGPE J184403.9-035406 X 18 44 03.97 -03 54 06.6           ~ 1 0
240 CXOGPE J184405.0-040436 X 18 44 05.05 -04 04 36.9           ~ 2 0
241 [ETP2005] NIR 28203 * 18 44 05.4057523920 -04 08 32.598067560           ~ 2 0
242 CXOGPE J184405.5-040539 X 18 44 05.56 -04 05 39.1           ~ 2 0
243 [ETP2005] NIR 28382 * 18 44 05.8908145416 -04 06 12.536333640           ~ 2 0
244 CXOGPE J184406.1-040843 X 18 44 06.10 -04 08 43.5           ~ 1 0
245 CXOGPE J184406.3-040704 X 18 44 06.35 -04 07 04.0           ~ 1 0
246 CXOGPE J184407.6-040514 X 18 44 07.60 -04 05 14.1           ~ 2 0
247 CXOGPE J184408.5-035355 X 18 44 08.59 -03 53 55.8           ~ 1 0
248 CXOGPE J184409.4-040731 X 18 44 09.49 -04 07 31.6           ~ 1 0
249 2MASS J18441095-0405170 NIR 18 44 10.96 -04 05 17.1           ~ 3 0
250 CXOGPE J184411.9-040630 X 18 44 11.88 -04 06 31.2           ~ 1 0
251 CXOGPE J184411.8-040512 X 18 44 11.89 -04 05 12.6           ~ 2 0
252 CXOGPE J184412.1-040808 X 18 44 12.17 -04 08 08.2           ~ 1 0
253 CXOGPE J184413.1-040620 X 18 44 13.16 -04 06 20.2           ~ 1 0
254 CXOGPE J184413.7-040232 X 18 44 13.72 -04 02 32.8           ~ 1 0
255 CXOGPE J184413.7-041217 X 18 44 13.77 -04 12 17.4           ~ 1 0
256 CXOGPE J184414.7-041134 X 18 44 14.75 -04 11 34.7           ~ 1 0
257 CXOGPE J184415.6-040356 X 18 44 15.58 -04 03 56.9           ~ 2 0
258 CXOGPE J184415.7-040858 X 18 44 15.73 -04 08 58.0           ~ 1 0
259 CXOGPE J184416.2-041257 X 18 44 16.25 -04 12 57.0           ~ 1 0
260 CXOGPE J184418.5-040602 X 18 44 18.55 -04 06 02.7           ~ 2 0
261 2MASS J18442109-0357072 AB? 18 44 21.0962399136 -03 57 07.245295416           ~ 3 0
262 CXOGPE J184421.6-040453 X 18 44 21.60 -04 04 53.2           ~ 1 0
263 CXOGPE J184421.7-041230 X 18 44 21.77 -04 12 30.1           ~ 1 0
264 CXOGPE J184422.5-035939 X 18 44 22.57 -03 59 39.8           ~ 1 0
265 CXOGPE J184422.6-040351 X 18 44 22.59 -04 03 51.9           ~ 1 0
266 CXOGPE J184422.6-040040 X 18 44 22.63 -04 00 40.0           ~ 1 0
267 2MASS J18442265-0400176 * 18 44 22.6586785656 -04 00 17.667949104           ~ 2 0
268 CXOGPE J184423.4-040308 X 18 44 23.45 -04 03 08.5           ~ 1 0
269 CXOGPE J184424.0-035911 X 18 44 24.0568869216 -03 59 11.175414504           ~ 1 0
270 2MASS J18442423-0401343 X 18 44 24.2407916352 -04 01 34.258451628           ~ 2 0
271 CXOGPE J184426.2-035748 X 18 44 26.13 -03 57 49.4           ~ 1 0
272 CXOGPE J184426.4-040635 X 18 44 26.40 -04 06 36.5           ~ 1 0
273 [ETP2005] X 269 * 18 44 26.6156375232 -04 03 27.594594108           ~ 1 0
274 CXOGPE J184426.6-040450 X 18 44 26.66 -04 04 50.1           ~ 1 0
275 CXOGPE J184427.7-040749 X 18 44 27.75 -04 07 49.3           ~ 1 0
276 CXOGPE J184428.5-040815 X 18 44 28.51 -04 08 15.3           ~ 1 0
277 2MASS J18442884-0401033 X 18 44 28.8479364792 -04 01 03.425121084           ~ 2 0
278 CXOGPE J184430.3-041044 X 18 44 30.36 -04 10 44.5           ~ 1 0
279 2MASS J18443278-0407037 * 18 44 32.7809041080 -04 07 03.761712732           ~ 1 0
280 NAME Galactic Ridge ? ~ ~           ~ 499 1

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