CDS

2006ApJ...643..965R

Query : 2006ApJ...643..965R

2006ApJ...643..965R - Astrophys. J., 643, 965-977 (2006/June-1)

Spectacular Spitzer images of the Trifid nebula: protostars in a young, massive-star-forming region.

RHO J., REACH W.T., LEFLOCH B. and FAZIO G.G.

Abstract (from CDS):

Spitzer IRAC and MIPS images of the Trifid Nebula (M20) reveal its spectacular appearance in infrared light, highlighting the nebula's special evolutionary stage. The images feature recently formed massive protostars and numerous young stellar objects, and a single O star that illuminates the surrounding molecular cloud from which it formed, and unveil large-scale, filamentary dark clouds. Multiple protostars are detected in the infrared, within the cold dust cores of TC3 and TC4, which were previously defined as Class 0. The cold dust continuum cores of TC1 and TC2 contain only one protostar each. The Spitzer color-color diagram allowed us to identify ∼160 young stellar objects (YSOs) and classify them into different evolutionary stages. The diagram also revealed a unique group of YSOs that are bright at 24 µm but have the spectral energy distribution peaking at 5-8 µm. Despite expectation that Class 0 sources would be ``starless'' cores, the Spitzer images, with unprecedented sensitivity, uncover mid-infrared emission from these Class 0 protostars. The mid-infrared detections of Class 0 protostars show that the emission escapes the dense, cold envelope of young protostars. The mid-infrared emission of the protostars can be fit by two temperatures of 150 and 400 K; the hot core region is probably optically thin in the mid-infrared regime, and the size of hot core is much smaller than that of the cold envelope. The presence of multiple protostars within the cold cores of Class 0 objects implies that clustering occurs at this early stage of star formation. The most massive star in the TC3 cluster is located at the center of the cluster and at the bottom of the gravitational potential well.

Abstract Copyright: ∼

Journal keyword(s): ISM: H II Regions - Infrared: Stars - ISM: Individual: Name: Trifid Nebula - Stars: Formation

VizieR on-line data: <Available at CDS (J/ApJ/643/965): table1.dat table2.dat>

Nomenclature: Table 1, col(1): [RRL2006] ClassI0 NN (Nos 1-37), [RRL2006] Hotex NN (Nos 1-13), [RRL2006] ClassII NNN (Nos 1-111) = Table 1, Col(2): SSTM20 JHHMMSS.ss+DDMMSS.s N=37+13+111. Table 2, col(1): [RRL2006] TCNA (Nos TC3A-TC3E, TC4A-TC4E, TC1, TC2) = Table 2, col(2): SSTM20 JHHMMSS.ss+DDMMSS.s N=12.

Simbad objects: 171

goto Full paper

goto View the references in ADS

Number of rows : 171
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 2MASS J18015168-2249496 Y*O 18 01 51.68 -22 49 49.7           ~ 1 0
2 2MASS J18015218-2252460 Y*O 18 01 52.18 -22 52 46.0           ~ 1 0
3 2MASS J18015253-2250062 Y*O 18 01 52.53 -22 50 06.3           ~ 1 0
4 2MASS J18015341-2251549 Y*O 18 01 53.413 -22 51 54.97           ~ 2 0
5 SSTM20 J180153.69-230954.4 Y*O 18 01 53.69 -23 09 54.4           ~ 1 0
6 2MASS J18015378-2303350 Y*O 18 01 53.78 -23 03 35.0           ~ 1 0
7 2MASS J18015406-2311518 Y*O 18 01 54.06 -23 11 51.9           ~ 1 0
8 SSTM20 J180154.46-230551.7 Y*O 18 01 54.46 -23 05 51.7           ~ 1 0
9 2MASS J18015456-2253583 Y*O 18 01 54.56 -22 53 58.3           ~ 1 0
10 SSTM20 J180155.06-224945.5 Y*O 18 01 55.06 -22 49 45.5           ~ 1 0
11 [RRL2006] ClassI0 2 Y*O 18 01 55.10088 -22 56 38.2776           ~ 3 0
12 2MASS J18015533-2246436 Y*O 18 01 55.34 -22 46 43.7           ~ 1 0
13 2MASS J18015574-2255162 Y*O 18 01 55.74 -22 55 16.3           ~ 1 0
14 [RRL2006] ClassI0 3 Y*O 18 01 57.72 -22 55 12.0           ~ 2 0
15 2MASS J18015808-2251318 Y*O 18 01 58.08 -22 51 31.9           ~ 1 0
16 2MASS J18015859-2244493 Y*O 18 01 58.5975448680 -22 44 49.494452640           ~ 1 0
17 SSTM20 J180158.65-230619.8 Y*O 18 01 58.65 -23 06 19.8           ~ 1 0
18 2MASS J18015864-2301356 Y*O 18 01 58.65 -23 01 35.7           ~ 1 0
19 SSTM20 J180158.97-230823.6 Y*O 18 01 58.97 -23 08 23.6           ~ 1 0
20 IRAS 17589-2252 Y*O 18 01 59.33 -22 52 36.2           ~ 1 0
21 SSTM20 J180159.36-230738.6 Y*O 18 01 59.36 -23 07 38.6           ~ 1 0
22 2MASS J18015937-2303070 Y*O 18 01 59.38 -23 03 07.1           ~ 1 0
23 SSTM20 J180159.38-224812.6 Y*O 18 01 59.38 -22 48 12.6           ~ 1 0
24 SSTM20 J180159.40-230556.8 Y*O 18 01 59.40 -23 05 56.8           ~ 1 0
25 2MASS J18020157-2301110 Y*O 18 02 01.58 -23 01 11.0           ~ 1 0
26 2MASS J18020176-2305537 Y*O 18 02 01.76568 -23 05 53.7468           ~ 4 0
27 2MASS J18020231-2249124 Y*O 18 02 02.31 -22 49 12.4           ~ 1 0
28 2MASS J18020319-2248483 Y*O 18 02 03.193 -22 48 48.32           ~ 2 0
29 2MASS J18020465-2300154 Y*O 18 02 04.66 -23 00 15.5           ~ 1 0
30 2MASS J18020485-2307193 Y*O 18 02 04.85 -23 07 19.3           ~ 1 0
31 SSTGLMC G006.9182-00.2213 Y*O 18 02 05.45184 -23 05 05.4420           ~ 5 0
32 SSTM20 J180205.52-230651.1 Y*O 18 02 05.52 -23 06 51.1           ~ 1 0
33 SSTM20 J180205.52-230439.4 Y*O 18 02 05.52 -23 04 39.4           ~ 1 0
34 SSTM20 J180205.57-230529.0 Y*O 18 02 05.57 -23 05 29.0           ~ 3 0
35 2MASS J18020560-2246393 Y*O 18 02 05.61 -22 46 39.4           ~ 1 0
36 2MASS J18020587-2247414 Y*O 18 02 05.87 -22 47 41.4           ~ 1 0
37 [CLC98] TC3 PoC 18 02 07 -23 05.2           ~ 11 0
38 SSTM20 J180207.15-224907.0 Y*O 18 02 07.15 -22 49 07.0           ~ 1 0
39 SSTGLMC G006.9141-00.2313 Y*O 18 02 07.19880 -23 05 36.2364           ~ 2 0
40 SSTM20 J180208.35-224455.0 Y*O 18 02 08.35 -22 44 55.0           ~ 1 0
41 SSTM20 J180208.38-224904.4 Y*O 18 02 08.38 -22 49 04.4           ~ 1 0
42 2MASS J18020857-2248592 Y*O 18 02 08.5827886896 -22 48 59.202647748           ~ 1 0
43 2MASS J18020893-2245294 Y*O 18 02 08.94 -22 45 29.4           ~ 1 0
44 2MASS J18020946-2247146 Y*O 18 02 09.460 -22 47 14.64           ~ 3 1
45 SSTM20 J180209.60-224928.9 Y*O 18 02 09.60 -22 49 28.9           ~ 1 0
46 2MASS J18020972-2256010 Y*O 18 02 09.72 -22 56 01.0           ~ 1 0
47 SSTM20 J180210.30-225455.8 Y*O 18 02 10.30 -22 54 55.8           ~ 1 0
48 SSTM20 J180210.94-224756.8 Y*O 18 02 10.94 -22 47 56.8           ~ 1 0
49 SSTM20 J180211.71-224742.4 Y*O 18 02 11.71 -22 47 42.4           ~ 1 0
50 2MASS J18021248-2305152 Y*O 18 02 12.480 -23 05 15.23           ~ 3 0
51 2MASS J18021267-2258523 Y*O 18 02 12.679 -22 58 52.36           ~ 3 0
52 SSTM20 J180212.69-224607.0 Y*O 18 02 12.69 -22 46 07.0           ~ 1 0
53 SSTGLMC G006.9221-00.2513 Y*O 18 02 12.76872 -23 05 46.7736           ~ 4 0
54 [CLC98] TC4 PoC 18 02 12.8 -23 05 47           ~ 12 0
55 2MASS J18021291-2254406 Y*O 18 02 12.9195705192 -22 54 40.647872376           ~ 1 0
56 2MASS J18021298-2249455 Y*O 18 02 12.98 -22 49 45.5           ~ 1 0
57 SSTGLMC G006.9178-00.2552 Y*O 18 02 13.09944 -23 06 07.0272           ~ 3 0
58 SSTGLMC G006.9115-00.2629 Y*O 18 02 14.04048 -23 06 40.6548           ~ 4 0
59 2MASS J18021421-2301438 Y*O 18 02 14.2198105056 -23 01 43.869893052           ~ 2 0
60 2MASS J18021432-2245575 Y*O 18 02 14.32 -22 45 57.6           ~ 1 0
61 [CLC98] TC4b PoC 18 02 14.4 +23 06 47           ~ 4 0
62 SSTGLMC G006.9142-00.2691 Y*O 18 02 15.78048 -23 06 43.1424           ~ 4 0
63 [RCC2001] TTS 1 TT* 18 02 15.8722603512 -23 05 55.826774592           ~ 6 0
64 SSTM20 J180216.22-224833.1 Y*O 18 02 16.22 -22 48 33.1           ~ 1 0
65 SSTM20 J180216.77-225437.4 Y*O 18 02 16.77 -22 54 37.4           ~ 1 0
66 V* V2282 Sgr Or* 18 02 16.8116259264 -23 03 47.334461004       15.02 14.07 ~ 8 1
67 2MASS J18021683-2300519 Y*O 18 02 16.83 -23 00 51.9           ~ 3 0
68 2MASS J18021697-2309467 Y*O 18 02 16.98 -23 09 46.8           ~ 1 0
69 SSTM20 J180217.64-225654.2 Y*O 18 02 17.64 -22 56 54.2           ~ 1 0
70 SSTGLMC G006.9095-00.2801 Y*O 18 02 17.68344 -23 07 17.4324           ~ 2 0
71 SSTM20 J180218.19-230750.5 Y*O 18 02 18.19 -23 07 50.5           ~ 1 0
72 SSTM20 J180218.60-224948.0 Y*O 18 02 18.60 -22 49 48.0           ~ 1 0
73 2MASS J18021922-2255129 Y*O 18 02 19.22 -22 55 12.9           ~ 1 0
74 2MASS J18022193-2247535 Y*O 18 02 21.94 -22 47 53.6           ~ 1 0
75 2MASS J18022273-2309303 Y*O 18 02 22.73 -23 09 30.3           ~ 1 0
76 IRAS 17593-2255 AB* 18 02 22.92384 -22 55 41.0304           O-rich 2 0
77 [RRC2004] 97 Y*O 18 02 23.228 -23 01 34.94         14.65 ~ 3 0
78 HD 164492 Y*O 18 02 23.5527520992 -23 01 50.999556180 6.49 7.49 6.80 7.52   O7.5Vz 225 0
79 SSTGLMC G007.0097-00.2542 Y*O 18 02 24.70680 -23 01 17.7204           ~ 13 0
80 [RRL2006] ClassI0 20 Y*O 18 02 25.25 -22 46 04.4           ~ 2 0
81 2MASS J18022539-2306159 Y*O 18 02 25.39 -23 06 15.9           ~ 1 0
82 2MASS J18022548-2250194 Y*O 18 02 25.49 -22 50 19.5           ~ 1 0
83 2MASS J18022588-2246003 Y*O 18 02 25.88 -22 46 00.3           ~ 1 0
84 2MASS J18022601-2245508 Y*O 18 02 26.01 -22 45 50.9           ~ 1 0
85 2MASS J18022692-2250371 Y*O 18 02 26.93 -22 50 37.1           ~ 1 0
86 2MASS J18022725-2303204 Y*O 18 02 27.257 -23 03 20.48           ~ 2 0
87 [CLC98] TC2 PoC 18 02 28.5 -23 03 57           ~ 12 0
88 2MASS J18022850-2303571 Y*O 18 02 28.50024 -23 03 57.1392           ~ 3 0
89 HH 399 HH 18 02 28.9 -23 04 00           ~ 27 0
90 MIRES G007.0337-00.2653 Y*O 18 02 30.31440 -23 00 22.4712           ~ 3 0
91 2MASS J18023067-2258008 Y*O 18 02 30.67 -22 58 00.8           ~ 1 0
92 CXOM20 J180230.93-230235.6 Y*O 18 02 30.9487927200 -23 02 35.212094520           ~ 4 0
93 HD 164514 sg* 18 02 31.6958071152 -22 54 19.953802296 8.87 8.32 7.42 7.83   A7Iab/b 66 0
94 SSTM20 J180231.71-225647.0 Y*O 18 02 31.71 -22 56 47.0           ~ 1 0
95 SSTM20 J180231.77-225753.6 Y*O 18 02 31.77 -22 57 53.6           ~ 1 0
96 SSTM20 J180232.76-224900.5 Y*O 18 02 32.76 -22 49 00.5           ~ 1 0
97 2MASS J18023298-2253491 Y*O 18 02 32.99 -22 53 49.1           ~ 1 0
98 2MASS J18023325-2302237 Y*O 18 02 33.25 -23 02 23.8           ~ 1 0
99 SSTM20 J180233.65-230902.9 Y*O 18 02 33.65 -23 09 02.9           ~ 1 0
100 [RRL2006] ClassII 57 Y*O 18 02 33.65 -23 09 02.9           ~ 1 0
101 SSTM20 J180233.82-225326.9 Y*O 18 02 33.82 -22 53 26.9           ~ 1 0
102 2MASS J18023397-2306588 Y*O 18 02 33.97872 -23 06 58.8600           ~ 2 0
103 SSTM20 J180234.17-230653.3 Y*O 18 02 34.17 -23 06 53.3           ~ 1 0
104 2MASS J18023442-2259165 Y*O 18 02 34.426 -22 59 16.56           ~ 3 0
105 2MASSI J1802344-230806 Y*O 18 02 34.46 -23 08 06.4           ~ 2 0
106 2MASS J18023485-2249550 Y*O 18 02 34.858 -22 49 55.01           ~ 2 0
107 2MASS J18023505-2258224 Y*O 18 02 35.0476065792 -22 58 22.353565728           ~ 1 0
108 SSTM20 J180235.23-225810.6 Y*O 18 02 35.23 -22 58 10.6           ~ 1 0
109 2MASS J18023617-2309143 Y*O 18 02 36.18 -23 09 14.3           ~ 1 0
110 SSTM20 J180236.50-224408.5 Y*O 18 02 36.50 -22 44 08.5           ~ 1 0
111 SSTM20 J180237.35-224857.2 Y*O 18 02 37.35 -22 48 57.2           ~ 1 0
112 2MASS J18023764-2246595 Y*O 18 02 37.64 -22 46 59.5           ~ 1 0
113 SSTM20 J180238.95-225841.9 Y*O 18 02 38.95 -22 58 41.9           ~ 1 0
114 SSTM20 J180240.03-230555.7 Y*O 18 02 40.03 -23 05 55.7           ~ 1 0
115 2MASS J18024040-2308505 Y*O 18 02 40.40 -23 08 50.6           ~ 1 0
116 2MASS J18024072-2300306 Y*O 18 02 40.73 -23 00 30.6           ~ 1 0
117 2MASS J18024107-2308433 Y*O 18 02 41.07 -23 08 43.4           ~ 1 0
118 SSTM20 J180241.30-224438.4 Y*O 18 02 41.30 -22 44 38.4           ~ 1 0
119 2MASS J18024144-2251419 Y*O 18 02 41.4073472808 -22 51 42.651550836           ~ 1 0
120 2MASS J18024163-2300038 Y*O 18 02 41.64 -23 00 03.9           ~ 1 0
121 M 20 OpC 18 02 42 -22 58.3           ~ 428 1
122 2MASS J18024214-2302389 Y*O 18 02 42.14 -23 02 39.0           ~ 1 0
123 [RRL2006] ClassI0 34 Y*O 18 02 42.41 -22 44 12.8           ~ 1 0
124 SSTM20 J180242.41-224412.8 Y*O 18 02 42.41 -22 44 12.8           ~ 1 0
125 2MASS J18024300-2303128 Y*O 18 02 43.004 -23 03 12.86           ~ 5 0
126 2MASS J18024308-2307211 Y*O 18 02 43.09 -23 07 21.2           ~ 1 0
127 2MASS J18024379-2305300 Y*O 18 02 43.80 -23 05 30.1           ~ 1 0
128 SSTM20 J180245.00-230805.3 Y*O 18 02 45.00 -23 08 05.3           ~ 1 0
129 SSTM20 J180245.07-230317.3 Y*O 18 02 45.07 -23 03 17.3           ~ 1 0
130 2MASS J18024536-2248518 Y*O 18 02 45.37 -22 48 51.8           ~ 1 0
131 2MASS J18024539-2246069 Y*O 18 02 45.3989113200 -22 46 06.937977540           ~ 1 0
132 2MASS J18024580-2244228 Y*O 18 02 45.80 -22 44 22.8           ~ 1 0
133 2MASS J18024722-2306124 Y*O 18 02 47.23 -23 06 12.5           ~ 2 0
134 2MASS J18024892-2245416 Y*O 18 02 48.93 -22 45 41.6           ~ 1 0
135 2MASS J18024918-2259457 Y*O 18 02 49.1859850056 -22 59 45.703433112           ~ 6 0
136 SSTM20 J180249.70-224905.5 Y*O 18 02 49.70 -22 49 05.5           ~ 1 0
137 2MASSI J1802500-230334 Y*O 18 02 50.16 -23 03 39.2           ~ 2 0
138 2MASS J18025044-2248501 Y*O 18 02 50.4404191704 -22 48 50.113694160           ~ 5 0
139 2MASS J18025051-2309237 Y*O 18 02 50.51 -23 09 23.7           ~ 1 0
140 SSTM20 J180250.79-231129.8 Y*O 18 02 50.79 -23 11 29.8           ~ 1 0
141 SSTM20 J180251.53-224641.5 Y*O 18 02 51.53 -22 46 41.5           ~ 1 0
142 2MASS J18025162-2247508 Y*O 18 02 51.62 -22 47 50.9           ~ 1 0
143 SSTM20 J180251.67-230207.1 Y*O 18 02 51.67 -23 02 07.1           ~ 1 0
144 SSTM20 J180251.69-230513.6 Y*O 18 02 51.69 -23 05 13.6           ~ 1 0
145 2MASS J18025197-2303563 Y*O 18 02 51.98 -23 03 56.4           ~ 1 0
146 2MASS J18025237-2300420 Y*O 18 02 52.38 -23 00 42.0           ~ 1 0
147 2MASS J18025359-2253302 Y*O 18 02 53.5837091952 -22 53 31.066587420           ~ 1 0
148 2MASS J18025361-2245323 Y*O 18 02 53.61 -22 45 32.3           ~ 1 0
149 2MASS J18025398-2309222 Y*O 18 02 53.98 -23 09 22.3           ~ 1 0
150 2MASS J18025538-2246339 Y*O 18 02 55.38 -22 46 33.9           ~ 1 0
151 2MASS J18025620-2305100 Y*O 18 02 56.20 -23 05 10.1           ~ 1 0
152 [RRL2006] ClassI0 36 Y*O 18 02 56.33 -22 43 58.1           ~ 2 0
153 [RRL2006] ClassI0 37 Y*O 18 02 56.78592 -22 50 31.3296           ~ 5 0
154 2MASS J18025727-2246116 Y*O 18 02 57.28 -22 46 11.7           ~ 1 0
155 2MASS J18025744-2257268 Y*O 18 02 57.45 -22 57 26.9           ~ 1 0
156 2MASS J18025753-2247288 Y*O 18 02 57.54 -22 47 28.9           ~ 1 0
157 2MASS J18025755-2245284 Y*O 18 02 57.56 -22 45 28.4           ~ 1 0
158 2MASS J18025803-2251577 Y*O 18 02 58.0262712528 -22 51 57.707714016           ~ 1 0
159 2MASS J18025828-2259535 Y*O 18 02 58.2796950624 -22 59 53.582033256           ~ 1 0
160 2MASS J18030015-2300339 Y*O 18 03 00.16 -23 00 34.0           ~ 1 0
161 2MASS J18030022-2303075 Y*O 18 03 00.23 -23 03 07.5           ~ 1 0
162 2MASS J18030117-2303355 Y*O 18 03 01.18 -23 03 35.6           ~ 1 0
163 2MASS J18030216-2259484 Y*O 18 03 02.1641672112 -22 59 48.466287312           ~ 1 0
164 2MASS J18030274-2258518 Y*O 18 03 02.75 -22 58 51.9           ~ 1 0
165 2MASS J18030338-2257187 Y*O 18 03 03.39 -22 57 18.8           ~ 1 0
166 2MASS J18030349-2257039 Y*O 18 03 03.49 -22 57 04.0           ~ 1 0
167 2MASS J18030381-2257344 Y*O 18 03 03.82 -22 57 34.4           ~ 1 0
168 SSTM20 J180304.27-230802.4 Y*O 18 03 04.27 -23 08 02.4           ~ 1 0
169 CO 034.20+00.10 MoC 18 53 23 +01 13.8           ~ 4 0
170 LDN 1014 cor 21 24 05.9 +49 59 07           ~ 93 0
171 NAME Cep E HII 23 03 12.779 +61 42 25.75           ~ 167 0

To bookmark this query, right click on this link: simbad:objects in 2006ApJ...643..965R and select 'bookmark this link' or equivalent in the popup menu

2023.09.22-20:22:49

© Université de Strasbourg/CNRS

    • Contact