2014A&A...566A.122S

Query : 2014A&A...566A.122S

2014A&A...566A.122S - Astronomy and Astrophysics, volume 566A, 122-122 (2014/6-1)

The molecular complex associated with the Galactic HII region Sh 2-90: a possible site of triggered star formation.

SAMAL M.R., ZAVAGNO A., DEHARVENG L., MOLINARI S., OJHA D.K., PARADIS D., TIGE J., PANDEY A.K. and RUSSEIL D.

Abstract (from CDS):

We investigate the star formation activity in the molecular complex associated with the Galactic HII region Sh2-90. We obtain the distribution of the ionized and cold neutral gas using radio-continuum and Herschel observations. We use near-infrared and Spitzer data to investigate the stellar content of the complex. We discuss the evolutionary status of embedded massive young stellar objects (MYSOs) using their spectral energy distribution. The Sh2-90 region presents a bubble morphology in the mid-infrared. Radio observations suggest it is an evolved HII region with an electron density ∼144cm–3, emission measure ∼6.7x104cm–6pc and an ionized mass ∼55M☉. From Herschel and CO (J=3-2) observations we found that the HII region is part of an elongated extended molecular cloud (H2 column density ≥3x1021cm–2 and dust temperature 18-27K) of total mass ≥1x104M☉. We identify the ionizing cluster of Sh2-90, the main exciting star being an O8-O9 V star. Five cold dust clumps, four mid-IR blobs around B stars, and a compact HII region are found at the edge of the bubble. The velocity information derived from CO data cubes suggest that most of them are associated with the Sh2-90 region. One hundred and twenty-nine low mass (≤3M☉) YSOs have been identified, and they are found to be distributed mostly in the regions of high column density. Four candidate Class 0/I MYSOs have been found. We suggest that multi-generation star formation is present in the complex. From evidence of interaction, time scales involved, and evolutionary status of stellar/protostellar sources, we argue that the star formation at the edges of Sh2-90 might have been triggered. However, several young sources in this complex are probably formed by some other processes.

Abstract Copyright: ∼

Journal keyword(s): HII regions - stars: formation - stars: protostars

VizieR on-line data: <Available at CDS (J/A+A/566/A122): table5.dat>

Nomenclature: Table 4: [SZD2014] CN N=9.

Simbad objects: 158

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Number of rows : 158
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 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2815 2
2 IC 1848 OpC 02 51 25.2 +60 25 08   6.87 6.5     ~ 491 2
3 SA 101- reg 09 57 28.2 -00 19 39           ~ 74 0
4 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
5 GRS G308.60 +00.60 HII 13 39.9 -61 45           ~ 101 0
6 SH 2-3 HII 17 12.4 -38 28           ~ 205 1
7 ICRF J192417.4+332929 QSO 19 24 17.48046496 +33 29 29.7381957           ~ 16 0
8 2MASS J19485183+2645015 Y*? 19 48 51.8387299584 +26 45 01.613369880           ~ 2 0
9 SSTGLMC G063.0449+00.4669 Y*? 19 48 53.519 +26 45 26.81           ~ 1 0
10 2MASS J19485414+2644544 Y*? 19 48 54.1543420608 +26 44 54.625235856           ~ 1 0
11 2MASS J19485924+2647375 Y*? 19 48 59.2391805840 +26 47 37.472920440           ~ 1 0
12 SSTGLMC G063.0890+00.4574 Y*? 19 49 01.719 +26 47 26.47           ~ 1 0
13 SSTGLMC G063.1334+00.4673 Y*? 19 49 05.489 +26 50 02.38           ~ 1 0
14 2MASS J19490570+2647475 Y*? 19 49 05.7034887576 +26 47 47.628779568           ~ 1 0
15 2MASS J19490629+2648490 Y*? 19 49 06.291 +26 48 49.02           ~ 1 0
16 SSTGLMC G063.1122+00.4500 Y*? 19 49 06.620 +26 48 25.03           ~ 1 0
17 2MASS J19490693+2650117 Y*? 19 49 06.934 +26 50 11.71           ~ 1 0
18 2MASS J19490718+2648330 Y*? 19 49 07.187 +26 48 33.08           ~ 1 0
19 SSTGLMC G063.1147+00.4485 Y*? 19 49 07.313 +26 48 30.00           ~ 1 0
20 [SZD2014] C9 cor 19 49 07.730 +26 50 58.40           ~ 1 0
21 SSTGLMC G063.1176+00.4465 Y*? 19 49 08.155 +26 48 35.29           ~ 1 0
22 RAFGL 2460 IR 19 49 08.9 +26 50 56           ~ 3 0
23 [BNM96] 063.125+0.443 HII 19 49 09.3798758496 +26 49 08.186732688           ~ 22 0
24 [SZD2014] C3 cor 19 49 09.520 +26 49 03.36           ~ 1 0
25 2MASS J19491005+2651047 Y*? 19 49 10.056 +26 51 04.71           ~ 1 0
26 2MASS J19491006+2650012 Y*? 19 49 10.067 +26 50 01.26           ~ 1 0
27 SSTGLMC G063.1474+00.4557 Y*? 19 49 10.081 +26 50 24.57           ~ 1 0
28 2MASS J19491089+2649433 Y*? 19 49 10.896 +26 49 43.40           ~ 2 0
29 2MASS J19491112+2650194 Y*? 19 49 11.121 +26 50 19.47           ~ 1 0
30 LBN 063.10+00.46 HII 19 49 11.7 +26 51 36   14.60 13.63     ~ 55 0
31 2MASS J19491179+2650243 Y*? 19 49 11.790 +26 50 24.40           ~ 1 0
32 2MASS J19491185+2650577 Y*? 19 49 11.853 +26 50 57.71           ~ 1 0
33 2MASS J19491201+2649443 Y*? 19 49 12.019 +26 49 44.31           ~ 1 0
34 2MASS J19491210+2652138 Y*? 19 49 12.110 +26 52 13.88           ~ 1 0
35 SSTGLMC G063.1263+00.4335 Y*? 19 49 12.354 +26 48 38.44           ~ 1 0
36 SSTGLMC G063.1171+00.4278 Y*? 19 49 12.424 +26 47 59.65           ~ 1 0
37 SSTGLMC G063.1774+00.4630 Y*? 19 49 12.494 +26 52 11.05           ~ 1 0
38 2MASS J19491259+2648381 Y*? 19 49 12.592 +26 48 38.15           ~ 1 0
39 2MASS J19491266+2650126 Y*? 19 49 12.6596875968 +26 50 12.738788556           ~ 1 0
40 SSTGLMC G063.1488+00.4452 Y*? 19 49 12.704 +26 50 09.88           ~ 1 0
41 2MASS J19491269+2650379 Y*? 19 49 12.7191700272 +26 50 37.976449884           ~ 1 0
42 SSTGLMC G063.0905+00.4101 Y*? 19 49 12.903 +26 46 04.61           ~ 1 0
43 2MASS J19491295+2651154 Y*? 19 49 12.960 +26 51 15.44           ~ 1 0
44 SSTGLMC G063.1600+00.4504 MIR 19 49 13.024 +26 50 53.95           ~ 2 0
45 [SZD2014] C7 cor 19 49 13.090 +26 50 52.16           ~ 1 0
46 2MASS J19491338+2650247 Y*? 19 49 13.388 +26 50 24.80           ~ 1 0
47 [SZD2014] C8 cor 19 49 13.530 +26 53 04.44           ~ 1 0
48 SSTGLMC G063.1695+00.4535 Y*? 19 49 13.606 +26 51 29.20           ~ 1 0
49 SSTGLMC G063.1639+00.4500 Y*? 19 49 13.661 +26 51 05.22           ~ 1 0
50 2MASS J19491368+2650349 Y*? 19 49 13.687 +26 50 34.95           ~ 1 0
51 2MASS J19491381+2650176 NIR 19 49 13.817 +26 50 17.70           ~ 2 0
52 2MASS J19491405+2650058 Y*? 19 49 14.059 +26 50 05.82           ~ 1 0
53 SSTGLMC G063.1653+00.4486 * 19 49 14.1636461232 +26 51 07.037439984   18.1   16.7   ~ 1 0
54 2MASS J19491420+2651158 Y*? 19 49 14.203 +26 51 15.88           ~ 1 0
55 2MASS J19491446+2650056 Y*? 19 49 14.464 +26 50 05.62           ~ 1 0
56 LS II +26 6 * 19 49 14.5148896920 +26 47 38.915962440 11.98 12.175 11.394     O9.5III 22 0
57 SSTGLMC G063.1529+00.4399 Y*O 19 49 14.534 +26 50 12.50           ~ 3 0
58 UCAC3 234-212533 * 19 49 14.6639349912 +26 51 05.928052680       15.73   ~ 1 0
59 UCAC3 234-212535 * 19 49 14.7119867472 +26 51 17.166048228       16.32   ~ 1 0
60 SSTGLMC G063.1721+00.4500 Y*? 19 49 14.783 +26 51 30.70           ~ 1 0
61 SSTGLMC G063.1477+00.4350 Y*? 19 49 14.923 +26 49 47.75           ~ 1 0
62 UCAC3 234-212542 * 19 49 15.0234395040 +26 51 10.957129632       16.15   ~ 2 0
63 SSTGLMC G063.1628+00.4431 Y*? 19 49 15.105 +26 50 49.33           ~ 1 0
64 2MASS J19491517+2650046 Y*? 19 49 15.1737137808 +26 50 04.578311724           ~ 1 0
65 2MASS J19491553+2643548 Y*? 19 49 15.536 +26 43 54.88           ~ 1 0
66 [ABB2014] WISE G063.164+00.449 bub 19 49 15.6 +26 50 46           ~ 10 0
67 SSTGLMC G063.1746+00.4478 Y*? 19 49 15.634 +26 51 34.63           ~ 1 0
68 SSTGLMC G063.1710+00.4454 Y*? 19 49 15.680 +26 51 18.91           ~ 1 0
69 2MASS J19491599+2649351 Y*? 19 49 16.0413376392 +26 49 34.895061192           ~ 1 0
70 [RMB2008] G063.0992+00.4014 Y*? 19 49 16.0849830672 +26 46 15.889085616           ~ 2 0
71 2MASS J19491626+2649372 Y*? 19 49 16.260 +26 49 37.24           ~ 1 0
72 SSTGLMC G063.1680+00.4394 Y*? 19 49 16.662 +26 50 58.76           ~ 1 0
73 [SZD2014] C4 cor 19 49 16.690 +26 49 16.53           ~ 1 0
74 SSTGLMC G063.1102+00.4049 Y*? 19 49 16.801 +26 46 56.46           ~ 1 0
75 2MASS J19491686+2648405 Y*? 19 49 16.868 +26 48 40.51           ~ 1 0
76 MSX6C G063.1549+00.4309 MIR 19 49 16.9 +26 50 02           ~ 1 0
77 MSX6C G063.1422+00.4227 MIR 19 49 17.1 +26 49 08           ~ 1 0
78 2MASS J19491730+2648230 NIR 19 49 17.307 +26 48 23.07           ~ 2 0
79 2MASS J19491747+2648320 Y*? 19 49 17.477 +26 48 32.06           ~ 1 0
80 2MASS J19491773+2651149 Y*? 19 49 17.733 +26 51 14.95           ~ 1 0
81 2MASS J19491798+2651217 Y*? 19 49 17.981 +26 51 21.74           ~ 1 0
82 2MASS J19491803+2651320 Y*? 19 49 18.0325523952 +26 51 32.071781052           ~ 1 0
83 SSTGLMC G063.1304+00.4111 Y*? 19 49 18.099 +26 48 10.54           ~ 1 0
84 SSTGLMC G063.0956+00.3904 Y*? 19 49 18.156 +26 45 44.55           ~ 1 0
85 2MASS J19491836+2651235 Y*? 19 49 18.369 +26 51 23.58           ~ 1 0
86 SSTGLMC G063.1748+00.4355 Y*? 19 49 18.518 +26 51 12.63           ~ 2 0
87 2MASS J19491862+2650212 Y*? 19 49 18.6452959080 +26 50 21.941415240           ~ 1 0
88 2MASS J19491915+2644359 Y*? 19 49 19.158 +26 44 35.91           ~ 1 0
89 SSTGLMC G063.1253+00.4026 Y*? 19 49 19.384 +26 47 39.14           ~ 1 0
90 [SZD2014] C6 cor 19 49 20.300 +26 51 45.63           ~ 1 0
91 SSTGLMC G063.1088+00.3887 Y*? 19 49 20.345 +26 46 22.68           ~ 1 0
92 SSTGLMC G063.1095+00.3867 Y*? 19 49 20.903 +26 46 21.13           ~ 1 0
93 SSTGLMC G063.1784+00.4271 Y*? 19 49 20.940 +26 51 08.73           ~ 1 0
94 SSTGLMC G063.1486+00.4090 Y*? 19 49 21.076 +26 49 03.08           ~ 1 0
95 [SZD2014] C2 cor 19 49 21.150 +26 46 22.10           ~ 1 0
96 SSTGLMC G063.2146+00.4458 Y*? 19 49 21.545 +26 53 35.02           ~ 1 0
97 SSTGLMC G063.1301+00.3955 Y*? 19 49 21.682 +26 47 41.07           ~ 1 0
98 SSTGLMC G063.1225+00.3906 Y*? 19 49 21.779 +26 47 08.50           ~ 1 0
99 IRAS 19473+2638 Cld 19 49 21.9 +26 46 33           ~ 3 0
100 2MASS J19492194+2646565 Y*? 19 49 21.950 +26 46 56.57           ~ 1 0
101 SSTGLMC G063.2023+00.4363 Y*? 19 49 22.077 +26 52 39.64           ~ 1 0
102 2MASS J19492219+2647043 Y*? 19 49 22.198 +26 47 04.40           ~ 1 0
103 2MASS J19492237+2646127 Y*? 19 49 22.371 +26 46 12.73           ~ 1 0
104 SSTGLMC G063.0791+00.3618 Y*? 19 49 22.539 +26 44 01.32           ~ 1 0
105 [CPA2006] N132 bub 19 49 23 +26 46.9           ~ 3 0
106 2MASS J19492305+2647388 Y*? 19 49 23.059 +26 47 38.83           ~ 1 0
107 2MASS J19492354+2654491 Y*? 19 49 23.546 +26 54 49.17           ~ 1 0
108 SSTGLMC G063.0952+00.3658 Y*? 19 49 23.806 +26 44 58.43           ~ 1 0
109 2MASS J19492386+2653019 Y*? 19 49 23.8612760952 +26 53 01.600397700           ~ 1 0
110 SSTGLMC G063.0992+00.3668 Y*? 19 49 24.112 +26 45 12.78           ~ 1 0
111 2MASS J19492412+2650313 Y*? 19 49 24.124 +26 50 31.33           ~ 1 0
112 2MASS J19492440+2647132 Y*? 19 49 24.402 +26 47 13.21           ~ 1 0
113 SSTGLMC G063.0952+00.3613 Y*? 19 49 24.838 +26 44 50.07           ~ 1 0
114 SSTGLMC G063.1270+00.3786 Y*? 19 49 25.164 +26 47 00.45           ~ 1 0
115 SSTGLMC G063.1421+00.3870 Y*? 19 49 25.303 +26 48 02.71           ~ 1 0
116 SSTGLMC G063.2207+00.4305 Y*? 19 49 25.932 +26 53 26.06           ~ 1 0
117 IRAS 19473+2647 LP* 19 49 25.9629026424 +26 55 12.698343588           ~ 4 0
118 SSTGLMC G063.2082+00.4222 Y*? 19 49 26.147 +26 52 31.85           ~ 1 0
119 2MASS J19492667+2654315 Y*? 19 49 26.672 +26 54 31.54           ~ 1 0
120 SSTGLMC G063.1891+00.4079 Y*? 19 49 26.857 +26 51 06.43           ~ 1 0
121 2MASS J19492707+2645011 Y*? 19 49 27.078 +26 45 01.12           ~ 1 0
122 SSTGLMC G063.1846+00.4032 Y*? 19 49 27.334 +26 50 44.23           ~ 1 0
123 2MASS J19492755+2645206 Y*? 19 49 27.552 +26 45 20.67           ~ 1 0
124 SSTGLMC G063.1169+00.3603 Y*? 19 49 28.027 +26 45 55.82           ~ 1 0
125 SSTGLMC G063.2385+00.4287 Y*? 19 49 28.788 +26 54 18.01           ~ 1 0
126 SSTGLMC G063.1092+00.3524 Y*? 19 49 28.815 +26 45 17.32           ~ 1 0
127 2MASS J19492936+2646344 Y*? 19 49 29.3428388880 +26 46 34.531106052           ~ 1 0
128 2MASS J19492942+2646159 Y*? 19 49 29.422 +26 46 15.91           ~ 1 0
129 SSTGLMC G063.1091+00.3496 Y*? 19 49 29.455 +26 45 11.88           ~ 1 0
130 2MASS J19492946+2650023 Y*? 19 49 29.464 +26 50 02.32           ~ 1 0
131 2MASS J19492952+2645153 Y*? 19 49 29.521 +26 45 15.31           ~ 1 0
132 2MASS J19492953+2646094 Y*? 19 49 29.537 +26 46 09.40           ~ 1 0
133 SSTGLMC G063.1280+00.3601 Y*? 19 49 29.596 +26 46 29.86           ~ 1 0
134 SSTGLMC G063.1012+00.3440 Y*? 19 49 29.674 +26 44 37.19           ~ 1 0
135 SSTGLMC G063.1187+00.3540 Y*? 19 49 29.736 +26 45 49.82           ~ 1 0
136 2MASS J19492983+2654194 Y*? 19 49 29.833 +26 54 19.49           ~ 1 0
137 SSTGLMC G063.1306+00.3598 Y*? 19 49 30.012 +26 46 37.16           ~ 1 0
138 SSTGLMC G063.1186+00.3526 Y*? 19 49 30.062 +26 45 46.97           ~ 1 0
139 SSTGLMC G063.1239+00.3536 Y*? 19 49 30.538 +26 46 05.02           ~ 1 0
140 2MASS J19493100+2644522 Y*? 19 49 31.001 +26 44 52.21           ~ 1 0
141 2MASS J19493116+2645293 Y*? 19 49 31.165 +26 45 29.38           ~ 1 0
142 SSTGLMC G063.1196+00.3480 Y*? 19 49 31.253 +26 45 41.58           ~ 1 0
143 SSTGLMC G063.1060+00.3392 Y*? 19 49 31.428 +26 44 43.56           ~ 1 0
144 2MASS J19493157+2645411 Y*? 19 49 31.574 +26 45 41.18           ~ 1 0
145 SSTGLMC G063.1069+00.3390 Y*? 19 49 31.599 +26 44 45.98           ~ 1 0
146 SSTGLMC G063.1406+00.3580 Y*? 19 49 31.792 +26 47 05.02           ~ 1 0
147 SSTGLMC G063.0985+00.3329 Y*? 19 49 31.877 +26 44 08.44           ~ 1 0
148 [SZD2014] C1 cor 19 49 31.920 +26 45 15.70           ~ 1 0
149 IRAS 19474+2637 IR 19 49 32.2352001912 +26 45 26.312895432           ~ 11 0
150 SSTGLMC G063.1074+00.3356 Y*? 19 49 32.449 +26 44 41.17           ~ 1 0
151 SSTGLMC G063.1164+00.3381 Y*? 19 49 33.100 +26 45 13.62           ~ 1 0
152 2MASS J19493380+2646225 Y*? 19 49 33.8024922024 +26 46 22.561855284           ~ 1 0
153 2MASS J19493386+2645261 Y*? 19 49 33.861 +26 45 26.13           ~ 1 0
154 SSTGLMC G063.1233+00.3365 Y*? 19 49 34.413 +26 45 32.13           ~ 1 0
155 SSTGLMC G063.1285+00.3373 Y*? 19 49 34.9239938880 +26 45 49.650020388           ~ 1 0
156 SSTGLMC G063.1168+00.3287 Y*? 19 49 35.323 +26 44 57.67           ~ 1 0
157 2MASS J19493873+2644439 Y*? 19 49 38.738 +26 44 43.99           ~ 1 0
158 2MASS J19494411+2644203 Y*? 19 49 44.1072463344 +26 44 20.309797392           ~ 1 0

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