2013MNRAS.432.3445J

Query : 2013MNRAS.432.3445J

2013MNRAS.432.3445J - Mon. Not. R. Astron. Soc., 432, 3445-3461 (2013/July-2)

Young stellar population and ongoing star formation in the HII complex Sh2-252.

JOSE J., PANDEY A.K., SAMAL M.R., OJHA D.K., OGURA K., KIM J.S., KOBAYASHI N., GOYAL A., CHAUHAN N. and ESWARAIAH C.

Abstract (from CDS):

In this paper, an extensive survey of the star-forming complex Sh2-252 has been undertaken with an aim to explore its hidden young stellar population as well as to understand the structure and star formation history for the first time. This complex is composed of five prominent embedded clusters associated with the subregions A, C, E, NGC 2175s and Teu 136. We used Two Micron All Sky Survey-near-infrared and Spitzer-Infrared Array Camera, Multiband Imaging Photometer for Spitzer photometry to identify and classify the young stellar objects (YSOs) by their infrared (IR) excess emission. Using the IR colour-colour criteria, we identified 577 YSOs, of which, 163 are Class I, 400 are Class II and 14 are transition disc YSOs, suggesting a moderately rich number of YSOs in this complex. Spatial distribution of the candidate YSOs shows that they are mostly clustered around the subregions in the western half of the complex, suggesting enhanced star formation activity towards its west. Using the spectral energy distribution and optical colour-magnitude diagram-based age analyses, we derived probable evolutionary status of the subregions of Sh2-252. Our analysis shows that the region A is the youngest ( ∼ 0.5Myr), the regions B, C and E are of similar evolutionary stage ( ∼ 1-2Myr) and the clusters NGC 2175s and Teu 136 are slightly evolved ( ∼ 2-3Myr). Morphology of the region in the 1.1 mm map shows a semicircular shaped molecular shell composed of several clumps and YSOs bordering the western ionization front of Sh2-252. Our analyses suggest that next generation star formation is currently under way along this border and that possibly fragmentation of the matter collected during the expansion of the Hii region as one of the major processes is responsible for such stars. We observed the densest concentration of YSOs (mostly Class I, ∼ 0.5Myr) at the western outskirts of the complex, within a molecular clump associated with water and methanol masers and we suggest that it is indeed a site of cluster formation at a very early evolutionary stage, sandwiched between the two relatively evolved CHii regions A and B.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): stars: formation - stars: pre-main-sequence - Hii regions - ISM: individual objects: Sh2-252 - infrared: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/432/3445): table1.dat>

Simbad objects: 201

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Number of rows : 201
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 SH 2-212 HII 04 40 36.52 +50 27 44.3           ~ 102 2
2 NAME LMC 5 Supergiant Shell sh 05 22 42 -66 05.6           ~ 56 0
3 NAME LMC 4 Supergiant Shell sh 05 31 33 -66 40.5           ~ 183 0
4 2MASS J06081513+2031300 Y*O 06 08 15.13152 +20 31 30.0540           ~ 2 0
5 2MASS J06081526+2031478 Y*O 06 08 15.26136 +20 31 47.8920           ~ 2 0
6 WISE J060815.58+203139.6 Y*O 06 08 15.577 +20 31 40.04           ~ 2 0
7 2MASS J06081589+2032395 Y*O 06 08 15.8961899016 +20 32 39.567384888           ~ 2 0
8 2MASS J06081636+2043341 Y*O 06 08 16.36080 +20 43 34.1544           ~ 2 0
9 2MASS J06081643+2036272 Y*O 06 08 16.43304 +20 36 27.2484           ~ 2 0
10 2MASS J06081679+2033243 Y*O 06 08 16.79592 +20 33 24.3036           ~ 2 0
11 2MASS J06081716+2045169 Y*O 06 08 17.1696177504 +20 45 16.896819636           ~ 1 0
12 WISE J060822.39+203644.4 Y*O 06 08 22.335 +20 36 44.85           ~ 2 0
13 2MASS J06082377+2036352 Y*O 06 08 23.77104 +20 36 35.2044           ~ 2 0
14 BGPS G189.789+00.291 Y*O 06 08 24.576 +20 36 53.18           ~ 7 0
15 2MASS J06082539+2034102 Y*O 06 08 25.39104 +20 34 10.2360           ~ 2 0
16 2MASS J06082566+2035408 Y*O 06 08 25.6654513224 +20 35 40.891105824           ~ 2 0
17 2MASS J06082664+2036373 Y*O 06 08 26.64504 +20 36 37.3896           ~ 2 0
18 2MASS J06082751+2037478 Y*O 06 08 27.51408 +20 37 47.8992           ~ 2 0
19 2MASS J06082753+2037435 Y*O 06 08 27.53328 +20 37 43.5828           ~ 2 0
20 2MASS J06082772+2036474 Y*O 06 08 27.7262636184 +20 36 47.387596680           ~ 2 0
21 2MASS J06082793+2037517 Y*O 06 08 27.93720 +20 37 51.7800           ~ 2 0
22 2MASS J06082794+2031363 Y*O 06 08 27.94440 +20 31 36.3036           ~ 2 0
23 SSTU J060828.13+203433.9 Y*O 06 08 28.134 +20 34 33.96           ~ 1 0
24 WISE J060828.13+204105.7 Y*O 06 08 28.174 +20 41 05.56           ~ 2 0
25 2MASS J06082865+2041031 Y*O 06 08 28.6522921704 +20 41 03.185055204           ~ 2 0
26 2MASS J06082928+2026204 Y*O 06 08 29.2896064056 +20 26 20.557636980           ~ 2 0
27 2MASS J06082932+2038170 Y*O 06 08 29.32296 +20 38 17.0268           ~ 2 0
28 2MASS J06082934+2025579 Y*O 06 08 29.3504984952 +20 25 57.936901368           ~ 2 0
29 2MASS J06082962+2042079 Y*O 06 08 29.62944 +20 42 07.9344           ~ 2 0
30 SSTU J060829.73+203800.6 Y*O 06 08 29.799 +20 38 01.14           ~ 2 0
31 2MASS J06083097+2038089 Y*O 06 08 30.97008 +20 38 08.9268           ~ 2 0
32 2MASS J06083129+2026497 Y*O 06 08 31.29792 +20 26 49.7796           ~ 2 0
33 2MASS J06083150+2026407 Y*O 06 08 31.50480 +20 26 40.7760           ~ 2 0
34 2MASS J06083179+2034117 Y*O 06 08 31.79040 +20 34 11.7156           ~ 2 0
35 2MASS J06083179+2038003 Y*O 06 08 31.79832 +20 38 00.3768           ~ 2 0
36 2MASS J06083238+2040303 Y*O 06 08 32.38440 +20 40 30.3204           ~ 2 0
37 2MASS J06083267+2024515 Y*O 06 08 32.6774793312 +20 24 51.518908620           ~ 2 0
38 SH 2-252 A HII 06 08 33 +20 39.3           ~ 75 0
39 2MASS J06083300+2033421 Y*O 06 08 33.00456 +20 33 42.1704           ~ 1 0
40 WISE J060833.03+202728.6 Y*O 06 08 33.005 +20 27 29.30           ~ 2 0
41 2MASS J06083326+2040386 Y*O 06 08 33.26808 +20 40 38.6220           M0 3 0
42 WISE J060833.26+202707.1 Y*O 06 08 33.283 +20 27 07.66           ~ 2 0
43 2MASS J06083502+2028115 Y*O 06 08 35.02944 +20 28 11.5392           ~ 2 0
44 2MASS J06083525+2035055 Y*O 06 08 35.25288 +20 35 05.5500           ~ 2 0
45 2MASS J06083640+2038499 Y*O 06 08 36.40728 +20 38 49.9452           ~ 2 0
46 2MASS J06083659+2037110 Y*O 06 08 36.59496 +20 37 11.0496           ~ 2 0
47 2MASS J06083677+2029429 Y*O 06 08 36.7683410688 +20 29 42.861136164           ~ 2 0
48 2MASS J06083698+2039219 Y*O 06 08 36.98448 +20 39 21.9924           ~ 2 0
49 2MASS J06083790+2038498 Y*O 06 08 37.90968 +20 38 49.8444           ~ 2 0
50 SSTU J060838.57+203539.0 Y*O 06 08 38.584 +20 35 39.41           ~ 2 0
51 2MASS J06083866+2035344 Y*O 06 08 38.66280 +20 35 34.4976           ~ 2 0
52 WISE J060838.69+203712.8 Y*O 06 08 38.719 +20 37 13.05           ~ 2 0
53 2MASS J06083892+2033082 Y*O 06 08 38.92848 +20 33 08.2152           ~ 2 0
54 2MASS J06083925+2039322 Y*O 06 08 39.2488654656 +20 39 32.290476516           ~ 2 0
55 2MASS J06083948+2038031 Y*O 06 08 39.48912 +20 38 03.1848           ~ 1 0
56 2MASS J06083949+2036559 Y*O 06 08 39.49992 +20 36 55.9152           ~ 2 0
57 2MASS J06083978+2039075 Y*O 06 08 39.78048 +20 39 07.5096           ~ 2 0
58 SSTU J060841.67+202637.5 Y*O 06 08 41.719 +20 26 37.57           ~ 2 0
59 WISE J060841.74+203633.3 Y*O 06 08 41.757 +20 36 33.08           ~ 2 0
60 2MASS J06084230+2038486 Y*O 06 08 42.30048 +20 38 48.6276           ~ 2 0
61 2MASS J06084293+2036384 Y*O 06 08 42.93264 +20 36 38.4552           ~ 1 0
62 SSTU J060842.88+203607.3 Y*O 06 08 42.950 +20 36 06.93           ~ 2 0
63 2MASS J06084317+2033599 Y*O 06 08 43.1750931264 +20 33 59.988700728           ~ 5 0
64 WISE J060843.26+203810.3 Y*O 06 08 43.240 +20 38 11.65           ~ 2 0
65 2MASS J06084404+2039130 Y*O 06 08 44.04120 +20 39 13.0176           ~ 2 0
66 2MASS J06084491+2037590 Y*O 06 08 44.91888 +20 37 59.0232           ~ 1 0
67 2MASS J06084517+2034572 Y*O 06 08 45.17280 +20 34 57.2088           ~ 2 0
68 2MASS J06084535+2035484 Y*O 06 08 45.35736 +20 35 48.4116           ~ 2 0
69 SSTU J060845.60+203843.9 Y*O 06 08 45.648 +20 38 43.98           ~ 2 0
70 2MASS J06084592+2037419 Y*O 06 08 45.9168487920 +20 37 41.934400176           ~ 2 0
71 2MASS J06084643+2038598 Y*O 06 08 46.4364426648 +20 38 59.862285384           ~ 2 0
72 2MASS J06084652+2038033 Y*O 06 08 46.52400 +20 38 03.3576           ~ 2 0
73 2MASS J06084670+2037418 Y*O 06 08 46.7014494984 +20 37 41.866531644           ~ 2 0
74 2MASS J06084711+2027131 Y*O 06 08 47.11632 +20 27 13.1652           ~ 2 0
75 2MASS J06084712+2037493 Y*O 06 08 47.12880 +20 37 49.3284           ~ 1 0
76 2MASS J06084715+2045385 Y*O 06 08 47.1526830024 +20 45 38.535150924           ~ 2 0
77 2MASS J06084784+2038208 Y*O 06 08 47.84064 +20 38 20.8464           ~ 1 0
78 SSTU J060847.79+203743.3 Y*O 06 08 47.849 +20 37 43.93           ~ 2 0
79 2MASS J06084853+2029261 Y*O 06 08 48.53424 +20 29 26.1564           ~ 2 0
80 2MASS J06084866+2029315 Y*O 06 08 48.66768 +20 29 31.5672           ~ 2 0
81 2MASS J06084915+2032444 Y*O 06 08 49.1480260344 +20 32 44.485948248           ~ 2 0
82 2MASS J06084954+2029316 Y*O 06 08 49.54872 +20 29 31.6428           ~ 2 0
83 2MASS J06085142+2029284 Y*O 06 08 51.42048 +20 29 28.4496           ~ 2 0
84 2MASS J06085157+2035366 Y*O 06 08 51.5801063760 +20 35 36.569890356           ~ 2 0
85 2MASS J06085376+2028461 Y*O 06 08 53.76312 +20 28 46.1496           ~ 2 0
86 2MASS J06085497+2034443 Y*O 06 08 54.9634070352 +20 34 44.348730708           ~ 2 0
87 2MASS J06085509+2040234 Y*O 06 08 55.09992 +20 40 23.4804           ~ 2 0
88 2MASS J06085519+2039328 Y*O 06 08 55.1980927416 +20 39 32.952033288           ~ 2 0
89 2MASS J06085544+2030469 Y*O 06 08 55.4455651872 +20 30 46.917638712           ~ 2 0
90 WISE J060856.75+202931.0 Y*O 06 08 56.722 +20 29 31.81           ~ 2 0
91 2MASS J06085808+2030449 Y*O 06 08 58.0935114744 +20 30 45.040485744           ~ 2 0
92 SH 2-252 B HII 06 08 58 +20 38.5           ~ 19 1
93 2MASS J06085819+2023299 Y*O 06 08 58.2019403280 +20 23 29.970000060           ~ 2 0
94 2MASS J06090102+2043106 Y*O 06 09 01.0291490136 +20 43 10.654751676           ~ 2 0
95 2MASS J06090266+2027274 Y*O 06 09 02.66016 +20 27 27.4284           ~ 2 0
96 IRAS 06060+2037 Ae* 06 09 02.7739054488 +20 36 42.911319024           A1 4 0
97 2MASS J06090614+2042139 Y*O 06 09 06.14136 +20 42 13.9896           ~ 2 0
98 2MASS J06090699+2042046 Y*O 06 09 06.99936 +20 42 04.6800           ~ 2 0
99 ZTF J060908.69+203400.3 LP* 06 09 08.7000438288 +20 34 00.361541388           ~ 4 0
100 2MASS J06090878+2041039 Y*O 06 09 08.7893431848 +20 41 03.922447632           ~ 2 0
101 SH 2-252 F HII 06 09 10 +20 28.4           ~ 7 0
102 2MASS J06091223+2039256 Y*O 06 09 12.2435204280 +20 39 25.449547068           ~ 2 0
103 2MASS J06091419+2039448 Y*O 06 09 14.1932017392 +20 39 44.853167304           ~ 2 0
104 SSTU J060914.53+203600.0 Y*O 06 09 14.537 +20 36 00.11           ~ 2 0
105 2MASS J06091465+2041264 Y*O 06 09 14.6579861856 +20 41 26.488568976           ~ 3 0
106 2MASS J06091600+2038291 Y*O 06 09 16.00512 +20 38 29.1624           ~ 1 0
107 WISE J060916.49+204553.1 Y*O 06 09 16.446 +20 45 53.64           ~ 2 0
108 2MASS J06091669+2038359 Y*O 06 09 16.6966348464 +20 38 35.907174780           ~ 2 0
109 2MASS J06092119+2037109 Y*O 06 09 21.1950317592 +20 37 11.087037696           ~ 2 0
110 SH 2-252 C HII 06 09 22 +20 39.5           ~ 12 0
111 2MASS J06092203+2036271 Y*O 06 09 22.03296 +20 36 27.1188           ~ 2 0
112 2MASS J06092216+2041576 Y*O 06 09 22.16040 +20 41 57.6492           ~ 2 0
113 2MASS J06092293+2042285 Y*O 06 09 22.93224 +20 42 28.5876           ~ 2 0
114 SH 2-252 D HII 06 09 24.122 +20 34 53.19           ~ 4 1
115 2MASS J06092469+2042106 Y*O 06 09 24.69360 +20 42 10.6236           ~ 2 0
116 2MASS J06092553+2036357 Y*O 06 09 25.5326651880 +20 36 35.694065664           ~ 2 0
117 ATO J092.3634+20.6308 Y*O 06 09 27.2337408360 +20 37 51.232187964   17.00 15.84 15.68   ~ 4 0
118 ZTF J060927.98+203027.0 Y*O 06 09 27.9935106792 +20 30 26.953593372           ~ 4 0
119 2MASS J06092823+2044363 Y*O 06 09 28.23312 +20 44 36.3876           ~ 2 0
120 2MASS J06092911+2037256 Y*O 06 09 29.1099647472 +20 37 25.657401432           ~ 2 0
121 2MASS J06093007+2043507 Y*O 06 09 30.0801000024 +20 43 50.669712948           ~ 2 0
122 ZTF J060933.17+203021.8 BY* 06 09 33.1749362880 +20 30 21.674683044           ~ 5 0
123 IRAS 06065+2033 Y*O 06 09 34.12152 +20 32 39.9804           ~ 3 0
124 2MASS J06093522+2031149 Y*O 06 09 35.2293463560 +20 31 14.988753336           ~ 2 0
125 2MASS J06093663+2027258 Y*O 06 09 36.6316826016 +20 27 25.920896832           ~ 2 0
126 2MASS J06093686+2035547 Y*O 06 09 36.8691501768 +20 35 54.744641088           ~ 2 0
127 2MASS J06093771+2037554 Y*O 06 09 37.7104669272 +20 37 55.411646592           ~ 1 0
128 2MASS J06093811+2031559 Y*O 06 09 38.0855598288 +20 31 56.184871296           ~ 2 0
129 NGC 2175 OpC 06 09 39 +20 29.2   7.0 6.8     ~ 270 3
130 2MASS J06093930+2038431 Y*O 06 09 39.3026455032 +20 38 43.213980048           ~ 2 0
131 WISE J060939.51+202941.8 Y*O 06 09 39.5279368344 +20 29 42.321102072           ~ 2 0
132 HD 42088 * 06 09 39.5728368936 +20 29 15.450599580 6.73 7.58 7.57 8.45   O6V((f))z 257 0
133 2MASS J06094075+2036005 Y*O 06 09 40.75128 +20 36 00.5652           ~ 2 0
134 2MASS J06094115+2035459 Y*O 06 09 41.15472 +20 35 45.9132           ~ 2 0
135 2MASS J06094128+2035325 Y*O 06 09 41.28912 +20 35 32.5716           ~ 2 0
136 2MASS J06094135+2043371 Y*O 06 09 41.3519879352 +20 43 37.176910464           ~ 3 0
137 2MASS J06094231+2035541 Y*O 06 09 42.3120671112 +20 35 54.082548528           ~ 2 0
138 2MASS J06094303+2037306 Y*O 06 09 43.0346471736 +20 37 30.494387136           ~ 2 0
139 WISE J060943.02+203424.2 Y*O 06 09 43.121 +20 34 24.89           ~ 2 0
140 2MASS J06094476+2042464 Y*O 06 09 44.76384 +20 42 46.4148           ~ 2 0
141 2MASS J06094710+2031407 Y*O 06 09 47.10072 +20 31 40.7784           ~ 2 0
142 Ass Gem OB 1 As* 06 09.8 +21 35           ~ 203 0
143 2MASS J06094837+2030322 Y*O 06 09 48.3738439392 +20 30 32.234665140           ~ 2 0
144 2MASS J06094873+2030553 Y*O 06 09 48.7289887104 +20 30 55.517151780           ~ 2 0
145 2MASS J06095144+2028345 Y*O 06 09 51.4445347272 +20 28 34.674833532           ~ 1 0
146 SH 2-252 E HII 06 09 53 +20 30.3           ~ 11 0
147 2MASS J06095438+2041084 Y*O 06 09 54.3838513992 +20 41 08.534491620           ~ 2 0
148 ZTF J060955.34+203334.6 LP* 06 09 55.3421996592 +20 33 34.657758864           K5 5 0
149 UCAC4 554-022502 Y*O 06 09 55.4413998912 +20 40 13.348909272   17.21 15.85 15.78   G5 6 0
150 WISE J061003.07+203636.3 Y*O 06 10 03.07032 +20 36 36.3168           ~ 1 0
151 2MASS J06100517+2029189 Y*O 06 10 05.1743778792 +20 29 18.908300220           ~ 1 0
152 WISE J061009.10+202921.9 Y*O 06 10 09.10656 +20 29 21.9948           ~ 1 0
153 2MASS J06101096+2029208 Y*O 06 10 10.9655471040 +20 29 20.839005528           ~ 1 0
154 2MASS J06104636+2034057 Y*O 06 10 46.3610163600 +20 34 05.734438392           ~ 1 0
155 2MASS J06104760+2030277 Y*O 06 10 47.6095022856 +20 30 27.792076248           ~ 1 0
156 2MASS J06104797+2032268 Y*O 06 10 47.97552 +20 32 26.8872           ~ 1 0
157 2MASS J06104984+2031398 Y*O 06 10 49.84680 +20 31 39.8532           ~ 1 0
158 2MASS J06105002+2031327 Y*O 06 10 50.0237168784 +20 31 32.673692568           ~ 1 0
159 2MASS J06105090+2031204 Y*O 06 10 50.9063276688 +20 31 20.460239112           ~ 1 0
160 2MASS J06105091+2031100 Y*O 06 10 50.9161681872 +20 31 10.017134904           ~ 1 0
161 2MASS J06105094+2031057 Y*O 06 10 50.9424729048 +20 31 05.667958812           ~ 1 0
162 2MASS J06105178+2030375 Y*O 06 10 51.78312 +20 30 37.5660           ~ 1 0
163 WISE J061051.92+203111.0 Y*O 06 10 51.91992 +20 31 11.0640           ~ 1 0
164 Cl Pismis 27 OpC 06 10 52.5 +20 37 05           ~ 31 0
165 2MASS J06105340+2030134 Y*O 06 10 53.40192 +20 30 13.4568           ~ 1 0
166 2MASS J06105500+2029028 Y*O 06 10 55.0090378752 +20 29 02.835034404           ~ 1 0
167 2MASS J06105759+2042460 Y*O 06 10 57.5896835689 +20 42 46.062383774           ~ 2 0
168 2MASS J06110596+2023371 Y*O 06 11 05.9636083872 +20 23 37.098029112           ~ 1 0
169 2MASS J06112392+2031221 Y*O 06 11 23.9263473864 +20 31 22.568961252           ~ 1 0
170 2MASS J06113043+2028477 Y*O 06 11 30.43848 +20 28 47.7156           ~ 1 0
171 2MASS J06113231+2033328 Y*O 06 11 32.3147454384 +20 33 32.814782352           ~ 1 0
172 2MASS J06113408+2045101 Y*O 06 11 34.08648 +20 45 10.1016           ~ 1 0
173 ZTF J061134.51+203037.3 RS* 06 11 34.5199637568 +20 30 37.326687084           ~ 3 0
174 2MASS J06113561+2028364 Y*O 06 11 35.6214346296 +20 28 36.383010924           ~ 1 0
175 2MASS J06113622+2031449 Y*O 06 11 36.2439785304 +20 31 45.063800184           ~ 1 0
176 ZTF J061136.46+203059.3 RS* 06 11 36.4696589184 +20 30 59.233201056           ~ 3 0
177 2MASS J06113687+2031041 Y*O 06 11 36.8728309992 +20 31 04.205791380           ~ 2 0
178 2MASS J06113718+2038561 Y*O 06 11 37.1762892984 +20 38 56.187005100           ~ 1 0
179 WISE J061137.26+202806.7 Y*O 06 11 37.26072 +20 28 06.7332           ~ 1 0
180 2MASS J06113796+2027224 Y*O 06 11 37.96728 +20 27 22.4784           ~ 1 0
181 2MASS J06114047+2032260 Y*O 06 11 40.4726973840 +20 32 26.114365500           ~ 2 0
182 2MASS J06114105+2032290 Y*O 06 11 41.05656 +20 32 29.0724           ~ 1 0
183 2MASS J06114162+2031349 Y*O 06 11 41.6282176368 +20 31 35.008734612           ~ 1 0
184 2MASS J06114185+2031589 Y*O 06 11 41.8503321984 +20 31 59.017287468           F9 4 0
185 2MASS J06114241+2031448 Y*O 06 11 42.4170364080 +20 31 44.890048272           ~ 1 0
186 2MASS J06114290+2032312 Y*O 06 11 42.90192 +20 32 31.2756           ~ 1 0
187 2MASS J06114612+2041541 Y*O 06 11 46.1227189248 +20 41 54.151412460           ~ 1 0
188 2MASS J06114833+2023597 Y*O 06 11 48.33672 +20 23 59.7300           ~ 1 0
189 UCAC4 554-022774 Y*O 06 11 48.5412654936 +20 36 59.303087280   14.21 13.69 13.72   ~ 2 0
190 2MASS J06114910+2039332 Y*O 06 11 49.0976957544 +20 39 33.217971948           ~ 1 0
191 2MASS J06114923+2039590 Y*O 06 11 49.2368237112 +20 39 59.127311196           ~ 1 0
192 ZTF J061155.16+204112.8 RS* 06 11 55.1652398136 +20 41 12.777413028           ~ 4 0
193 2MASS J06115799+2040184 Y*O 06 11 57.9973080912 +20 40 18.238609128           ~ 1 0
194 DSH J0611.9+2040 OpC 06 11 58.1 +20 40 28           ~ 6 1
195 2MASS J06115877+2038517 Y*O 06 11 58.7655601032 +20 38 51.722659248           ~ 1 0
196 2MASS J06120205+2040482 Y*O 06 12 02.0524595688 +20 40 48.165295044           ~ 1 0
197 UCAC4 554-022830 Y*O 06 12 04.2252589008 +20 39 22.784462028   16.47 15.54 15.20   ~ 2 0
198 SH 2-257 HII 06 12 43.57 +17 59 33.1           ~ 135 1
199 NAME S254-258 complex SFR 06 12 48.0 +17 59 00           ~ 23 0
200 IC 2162 HII 06 13 04.1 +17 58 44           ~ 372 2
201 SH 2-3 HII 17 12.4 -38 28           ~ 234 1

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