2007MNRAS.374.1413N

Query : 2007MNRAS.374.1413N

2007MNRAS.374.1413N - Mon. Not. R. Astron. Soc., 374, 1413-1420 (2007/February-1)

A SCUBA survey of Orion - the low-mass end of the core mass function.

NUTTER D. and WARD-THOMPSON D.

Abstract (from CDS):

We have re-analysed all of the Submillimetre Common User Bolometer Array (SCUBA) archive data of the Orion star-forming regions. We have put together all of the data taken at different times by different groups. Consequently, we have constructed the deepest submillimetre maps of these regions ever made. There are four regions that have been mapped: Orion A North and South, and Orion B North and South. We find that two of the regions, Orion A North and Orion B North, have deeper sensitivity and completeness limits, and contain a larger number of sources, so we concentrate on these two. We compare the data with archive data from the Spitzer Space Telescope to determine whether or not a core detected in the submillimetre is pre-stellar in nature. We extract all of the pre-stellar cores from the data and make a histogram of the core masses. This can be compared to the stellar initial mass function (IMF). We find the high-mass core mass function (CMF) follows a roughly Salpeter-like slope, just like the IMF, as seen in previous work. Our deeper maps allow us to see that the CMF turns over at, ∼1.3M☉about a factor of 4 higher than our completeness limit. This turnover has never previously been observed, and is only visible here due to our much deeper maps. It mimics the turnover seen in the stellar IMF at ∼0.1M☉. The low-mass side of the CMF is a power law with an exponent of, 0.35±0.2 which is consistent with the low-mass slope of the young cluster IMF of 0.3±0.1. This shows that the CMF continues to mimic the shape of the IMF all the way down to the lower completeness limit of these data at ∼0.3M☉.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): stars: formation - stars: pre-main-sequence - ISM: clouds - dust, extinction - ISM individual: Orion

VizieR on-line data: <Available at CDS (J/MNRAS/374/1413): tablea1.dat>

Nomenclature: Table A.1: [NW2007] OrionAN-HHMMSSs+DMMSS N=172, [NW2007] OrionAS-HHMMSSs+DMMSS N=62, [NW2007] OrionBN-HHMMSSs+DMMSS N=100, [NW2007] OrionBS-HHMMSSs+DMMSS N=59.

Simbad objects: 415

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Number of rows : 415
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 V* HL Tau Or* 04 31 38.5107609312 +18 13 57.859747968   15.89 14.49 14.39   K5 1546 0
2 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 797 0
3 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
4 LDN 1640 DNe 05 33 45 -05 41.0           ~ 33 0
5 JCMTSE J053443.8-054126 cor 05 34 44.01 -05 41 25.1           ~ 7 0
6 JCMTSE J053445.0-054420 cor 05 34 45.25 -05 44 18.8           ~ 7 0
7 [SKN2015] AzTEC-Ori 185 Y*? 05 34 49.63 -05 44 38.1           ~ 4 0
8 [SKN2015] AzTEC-Ori 187 cor 05 34 50.80 -05 37 54.4           ~ 3 0
9 JCMTSE J053451.0-053856 cor 05 34 51.48 -05 38 52.2           ~ 7 0
10 JCMTSE J053452.6-054408 Y*? 05 34 52.25 -05 44 11.1           ~ 4 0
11 JCMTSF J053453.9-053714 Y*? 05 34 54.09 -05 37 12.4           ~ 4 0
12 [SKN2015] AzTEC-Ori 200 Y*? 05 34 54.80 -05 43 30.4           ~ 2 0
13 [ISK2007] 34 cor 05 34 56.44 -05 33 53.9           ~ 5 0
14 [SKN2015] C18O-Ori 83 cor 05 34 56.6 -05 41 39           ~ 6 0
15 [SKN2015] AzTEC-Ori 212 Y*? 05 34 56.80 -05 16 18.4           ~ 2 0
16 [NW2007] OrionAN-0534569-53640 cor 05 34 56.9 -05 36 40           ~ 3 0
17 [NW2007] OrionAN-0534575-54338 Y*? 05 34 57.5 -05 43 38           ~ 1 0
18 [NW2007] OrionAN-0534576-52053 Y*? 05 34 57.6 -05 20 53           ~ 1 0
19 JCMTSF J053457.9-054056 Y*? 05 34 58.31 -05 40 55.1           ~ 4 0
20 [ISK2007] 46 cor 05 34 58.8 -05 40 29           ~ 3 0
21 JCMTSF J053459.1-054414 Y*? 05 34 59.1 -05 44 14           ~ 3 0
22 [NW2007] OrionAN-0535005-45831 cor 05 34 59.6 -04 58 42           ~ 3 0
23 [NW2007] OrionAN-0535000-52145 cor 05 35 00.0 -05 21 45           ~ 3 0
24 JCMTSE J053459.9-053856 Y*? 05 35 00.06 -05 38 56.5           ~ 5 0
25 [NW2007] OrionAN-0535006-51620 Y*? 05 35 00.6 -05 16 20           ~ 2 0
26 [NW2007] OrionAN-0535010-51936 Y*? 05 35 01.0 -05 19 36           ~ 1 0
27 [SKN2015] AzTEC-Ori 234 Y*? 05 35 01.4 -05 13 40           ~ 3 0
28 [NW2007] OrionAN-0535016-53648 Y*? 05 35 01.6 -05 36 48           ~ 1 0
29 [SKN2015] C18O-Ori 96 Y*? 05 35 01.63 -05 15 21.4           ~ 6 0
30 JCMTSE J053502.7-053614 cor 05 35 02.0 -05 36 10           ~ 14 0
31 [NW2007] OrionAN-0535011-51817 cor 05 35 02.1 -05 17 54           ~ 3 0
32 [NW2007] OrionAN-0535022-52453 Y*? 05 35 02.2 -05 24 53           ~ 2 0
33 [SKN2015] AzTEC-Ori 236 Y*? 05 35 02.3 -05 37 56           ~ 5 0
34 JCMTSF J053502.3-053714 Y*? 05 35 02.3 -05 37 14           ~ 3 0
35 [NW2007] OrionAN-0535023-52231 Y*? 05 35 02.3 -05 22 31           ~ 1 0
36 [SKN2015] AzTEC-Ori 238 Y*? 05 35 02.5 -05 27 54           ~ 2 0
37 JCMTSE J053502.7-052326 Y*? 05 35 02.7 -05 23 26           ~ 2 0
38 [ISK2007] 53 cor 05 35 03.03 -04 59 03.4           ~ 5 0
39 [NW2007] OrionAN-0535031-52140 Y*? 05 35 03.1 -05 21 40           ~ 2 0
40 [NW2007] OrionAN-0535036-51801 Y*? 05 35 03.6 -05 18 01           ~ 1 0
41 [NW2007] OrionAN-0535040-52046 Y*? 05 35 04.0 -05 20 46           ~ 2 0
42 JCMTSE J053504.7-053456 cor 05 35 04.7 -05 34 56           ~ 5 0
43 JCMTSE J053504.7-052420 cor 05 35 04.7 -05 24 13           ~ 12 0
44 JCMTSE J053504.7-053726 cor 05 35 04.8 -05 37 32           ~ 13 0
45 [ISK2007] 63 cor 05 35 04.91 -04 57 25.8           ~ 5 0
46 [NW2007] OrionAN-0535054-52025 Y*? 05 35 05.4 -05 20 25           ~ 1 0
47 JCMTSE J053505.5-053314 Y*? 05 35 05.5 -05 33 14           ~ 4 0
48 [NW2007] OrionAN-0535056-52253 Y*? 05 35 05.6 -05 22 53           ~ 2 0
49 [NW2007] OrionAN-0535067-45631 cor 05 35 06.1 -04 56 07           ~ 5 0
50 JCMTSE J053506.3-053402 Y*? 05 35 06.3 -05 34 02           ~ 4 0
51 [NW2007] OrionAN-0535063-51550 Y*? 05 35 06.3 -05 15 50           ~ 1 0
52 JW 288 Or* 05 35 06.4624528248 -05 21 18.767287044   14.8 19.144   15.127 M5 37 0
53 [NW2007] OrionAN-0535068-51709 Y*? 05 35 06.8 -05 17 09           ~ 1 0
54 JCMTSE J053507.9-053556 Y*? 05 35 08.29 -05 35 56.5           ~ 6 0
55 JCMTSE J053508.6-060414 Y*? 05 35 08.6 -06 04 14           ~ 4 0
56 JCMTSE J053509.0-060608 Y*? 05 35 09.0 -06 06 08           ~ 4 0
57 [NW2007] OrionAN-0535091-52027 Y*? 05 35 09.1 -05 20 27           ~ 1 0
58 [NW2007] OrionAN-0535091-51752 Y*? 05 35 09.1 -05 17 52           ~ 1 0
59 [NW2007] OrionAN-0535093-52958 Y*? 05 35 09.3 -05 29 58           ~ 1 0
60 [NW2007] OrionAN-0535097-51849 Y*? 05 35 09.39 -05 18 46.3           ~ 3 0
61 [SKN2015] AzTEC-Ori 272 Y*? 05 35 09.5 -05 37 56           ~ 5 0
62 [NW2007] OrionAS-0535098-61358 Y*? 05 35 09.8 -06 13 58           ~ 2 0
63 JCMTSE J053509.9-053508 cor 05 35 09.9 -05 35 08           ~ 5 0
64 [NW2007] OrionAN-0535101-51518 Y*? 05 35 10.1 -05 15 18           ~ 1 0
65 [NW2007] OrionAN-0535104-51651 Y*? 05 35 10.4 -05 16 51           ~ 1 0
66 [NW2007] OrionAN-0535106-52926 Y*? 05 35 10.6 -05 29 26           ~ 1 0
67 [NW2007] OrionAN-0535112-50011 Y*? 05 35 11.2 -05 00 11           ~ 2 0
68 [NW2007] OrionAN-0535112-51828 Y*? 05 35 11.66 -05 18 34.6           ~ 2 0
69 JCMTSF J053511.9-053432 Y*? 05 35 12.09 -05 34 27.6           ~ 4 0
70 2MASS J05351268-0601101 Y*? 05 35 12.6828583608 -06 01 10.187655420     19.64   16.22 ~ 13 0
71 JCMTSF J053512.8-050932 Y*? 05 35 12.8 -05 09 32           ~ 2 0
72 JCMTSE J053513.2-052956 Y*? 05 35 13.2 -05 29 56           ~ 2 0
73 [SKN2015] AzTEC-Ori 287 Y*? 05 35 13.30 -05 33 34.0           ~ 4 0
74 [NW2007] OrionAN-0535136-52409 Y*? 05 35 13.57 -05 24 08.2           ~ 24 1
75 [NW2007] OrionAN-0535138-51013 Y*? 05 35 13.8 -05 10 13           ~ 1 0
76 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1249 2
77 NAME OMC-N6 Y*? 05 35 14.46 -05 18 42.8           ~ 8 0
78 JCMTSE J053514.4-052232 Y*? 05 35 14.488 -05 22 32.10           ~ 48 0
79 [NW2007] OrionAN-0535146-52623 Y*? 05 35 14.6 -05 26 23           ~ 1 0
80 [NW2007] OrionAN-0535149-51646 Y*? 05 35 14.9 -05 16 46           ~ 1 0
81 JCMTPP J053514.9-051608 Y*? 05 35 14.94 -05 16 10.6           ~ 6 0
82 [NW2007] OrionAN-0535154-51114 Y*? 05 35 15.4 -05 11 14           ~ 1 0
83 NAME OMC-N5 Y*? 05 35 15.7 -05 20 39           ~ 7 0
84 [NW2007] OrionAN-0535157-51318 Y*? 05 35 15.7 -05 13 18           ~ 1 0
85 JCMTSF J053516.0-052108 Y*? 05 35 15.90 -05 21 12.2           ~ 4 0
86 [SKN2015] AzTEC-Ori 290 Y*? 05 35 15.9 -05 15 09           ~ 2 0
87 [NW2007] OrionAN-0535161-51207 cor 05 35 16.1 -05 12 07           ~ 1 0
88 [NW2007] OrionAN-0535161-50000 Y*? 05 35 16.1 -05 00 00           ~ 3 0
89 TKK 544 Y*O 05 35 16.491 -05 06 00.37           ~ 16 0
90 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
91 NAME OMC-N4 Y*? 05 35 16.8 -05 19 19           ~ 15 0
92 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
93 JCMTSE J053517.6-050232 cor 05 35 17.35 -05 02 35.1           ~ 8 0
94 [SKN2015] AzTEC-Ori 291 Y*? 05 35 17.7 -04 56 34           ~ 2 0
95 [ISK2007] 140 cor 05 35 17.8 -05 30 20           ~ 3 0
96 [NW2007] OrionAS-0535180-60010 cor 05 35 18.0 -06 00 10           ~ 1 0
97 [NW2007] OrionAN-0535181-52129 Y*? 05 35 18.1 -05 21 29           ~ 2 0
98 [NW2007] OrionAN-0535183-51207 Y*? 05 35 18.3 -05 12 07           ~ 1 0
99 [TUK93] 3 Y*O 05 35 18.32712 -05 00 32.9400           ~ 80 2
100 [NW2007] OrionAN-0535184-52049 Y*? 05 35 18.4 -05 20 49           ~ 1 0
101 JCMTSE J053518.4-050144 Y*? 05 35 18.4 -05 01 44           ~ 6 0
102 NAME Beehive Proplyd Y*? 05 35 18.50 -05 28 24.4           ~ 22 1
103 [NW2007] OrionAN-0535185-50935 cor 05 35 18.5 -05 09 35           ~ 3 0
104 V* V2331 Ori TT* 05 35 18.5237163768 -05 13 38.331487308   18.794 17.244   13.333 M2e 61 0
105 JCMTSF J053518.8-051408 Y*? 05 35 18.62 -05 14 07.4           ~ 6 0
106 [NW2007] OrionAN-0535191-51829 Y*? 05 35 19.1 -05 18 29           ~ 1 0
107 [NW2007] OrionAN-0535192-50457 Y*? 05 35 19.2 -05 04 57           ~ 2 0
108 V* V2358 Ori Or* 05 35 19.82376 -05 15 35.3304           ~ 34 0
109 [NW2007] OrionAN-0535200-51810 Y*? 05 35 20.0 -05 18 10           ~ 2 0
110 OMC 3 MoC 05 35 20.0 -05 01 00           ~ 301 1
111 JCMTSF J053520.4-050139 Y*? 05 35 20.4 -05 01 39           ~ 3 0
112 JCMTSF J053520.4-050051 Y*? 05 35 20.45 -05 00 49.1           ~ 8 0
113 [NW2007] OrionAS-0535213-61313 cor 05 35 21.3 -06 13 13           ~ 3 0
114 JCMTSF J053521.2-051450 Y*? 05 35 21.3 -05 14 54           ~ 9 0
115 HOY J053521.34-051319.5 cor 05 35 21.4 -05 13 14           ~ 31 0
116 [NW2007] OrionAN-0535216-51039 Y*? 05 35 21.6 -05 10 39           ~ 3 0
117 [NW2007] OrionAN-0535218-51422 Y*? 05 35 21.8 -05 14 22           ~ 3 0
118 [NW2007] OrionAN-0535220-52305 Y*? 05 35 22.0 -05 23 05           ~ 1 0
119 [OW94] 221-510 Y*? 05 35 22.1 -05 25 10           ~ 6 1
120 [NW2007] OrionAN-0535222-50817 Y*? 05 35 22.2 -05 08 17           ~ 1 0
121 [NW2007] OrionAS-0535223-60316 Y*? 05 35 22.3 -06 03 16           ~ 2 0
122 [NW2007] OrionAN-0535224-50114 Y*? 05 35 22.4 -05 01 14           ~ 3 0
123 [NW2007] OrionAN-0535225-51834 Y*? 05 35 22.5 -05 18 34           ~ 1 0
124 [NW2007] OrionAN-0535225-51014 Y*? 05 35 22.5 -05 10 14           ~ 3 0
125 [NW2007] OrionAN-0535226-45633 Y*? 05 35 22.6 -04 56 33           ~ 1 0
126 JCMTSF J053522.8-051238 Y*? 05 35 22.97 -05 12 37.6           ~ 7 0
127 JCMTSF J053523.6-050133 Y*? 05 35 23.34 -05 01 28.5           ~ 8 0
128 [NW2007] OrionAN-0535234-51205 Y*? 05 35 23.4 -05 12 05           ~ 3 0
129 [NW2007] OrionAN-0535235-50734 Y*? 05 35 23.5 -05 07 34           ~ 3 0
130 [NW2007] OrionAN-0535236-50711 Y*? 05 35 23.6 -05 07 11           ~ 3 0
131 [NW2007] OrionAN-0535243-50937 Y*? 05 35 24.3 -05 09 37           ~ 1 0
132 JCMTSF J053524.4-050832 Y*? 05 35 24.4 -05 08 40           ~ 6 0
133 [TSO2008] 24 Y*? 05 35 24.6 -05 07 53           ~ 26 0
134 2MASS J05352462-0522215 Y*? 05 35 24.628 -05 22 21.59           ~ 5 0
135 2MASS J05352499-0519253 Y*? 05 35 24.994 -05 19 25.38           ~ 6 0
136 [ATS2000] AC7 Y*? 05 35 25.0 -05 02 40           ~ 10 0
137 V* V2434 Ori TT* 05 35 25.2272336520 -05 15 35.730835848 17.433 17.401 16.302   13.355 M1.5 64 0
138 JCMTSF J053525.2-052432 Y*? 05 35 25.3 -05 24 34           ~ 5 0
139 CXOONC J053525.4-052012 Y*? 05 35 25.404 -05 20 12.30           ~ 7 0
140 JCMTSF J053526.0-050545 Y*? 05 35 25.8 -05 05 54           ~ 7 0
141 JCMTSF J053526.0-050726 Y*? 05 35 26.0 -05 07 26           ~ 3 0
142 JCMTSF J053526.0-050133 Y*? 05 35 26.0 -05 01 33           ~ 5 0
143 [NW2007] OrionAN-0535269-52129 Y*? 05 35 26.31 -05 21 33.0           ~ 2 0
144 [NW2007] OrionAN-0535264-52230 Y*? 05 35 26.4 -05 22 30           ~ 1 0
145 [NW2007] OrionAN-0535264-50830 Y*? 05 35 26.4 -05 08 30           ~ 3 0
146 [NW2007] OrionAN-0535265-51011 cor 05 35 26.5 -05 10 11           ~ 3 0
147 IRAS 05329-0505 Y*O 05 35 26.746 -05 03 55.08           ~ 103 0
148 [NW2007] OrionAN-0535270-52523 Y*? 05 35 27.0 -05 25 23           ~ 1 0
149 OMC 2 MoC 05 35 27 -05 10.1           ~ 475 1
150 JCMTSE J053527.2-051132 Y*? 05 35 27.08 -05 11 33.7           ~ 7 0
151 [NW2007] OrionAN-0535274-50511 Y*? 05 35 27.4 -05 05 11           ~ 3 0
152 JCMTSE J053527.2-052750 Y*? 05 35 27.59 -05 27 50.4           ~ 3 0
153 [NW2007] OrionAN-0535276-50802 Y*? 05 35 27.6 -05 08 02           ~ 1 0
154 2MASS J05352762-0509337 Y*O 05 35 27.622 -05 09 33.78           ~ 128 0
155 [NW2007] OrionAN-0535279-51025 Y*? 05 35 27.9 -05 10 25           ~ 3 0
156 YBD 61 Y*? 05 35 27.92 -05 07 10.5           ~ 7 0
157 [ISK2007] 193 cor 05 35 28.32 -05 59 50.6           ~ 7 0
158 JCMTSE J053529.1-062744 Y*? 05 35 29.1 -06 27 44           ~ 2 0
159 JCMTSF J053528.8-051208 Y*? 05 35 29.34 -05 12 07.2           ~ 4 0
160 [SKN2015] AzTEC-Ori 337 cor 05 35 29.4 -04 58 31           ~ 14 0
161 [NW2007] OrionAN-0535295-52400 Y*? 05 35 29.5 -05 24 00           ~ 1 0
162 [NW2007] OrionAN-0535296-53644 Y*? 05 35 29.6 -05 36 44           ~ 2 0
163 JCMTSF J053529.9-062656 Y*? 05 35 29.84 -06 26 57.7           ~ 7 0
164 [NW2007] OrionAN-0535301-50453 Y*? 05 35 30.1 -05 04 53           ~ 1 0
165 [NW2007] OrionAS-0535305-62622 Y*? 05 35 30.5 -06 26 22           ~ 1 0
166 [NW2007] OrionAN-0535305-50926 Y*? 05 35 30.5 -05 09 26           ~ 1 0
167 JCMTSF J053530.0-045944 Y*? 05 35 30.6 -04 59 49           ~ 6 0
168 JCMTSE J053531.7-050039 Y*? 05 35 31.39 -05 00 37.1           ~ 5 0
169 [SKN2015] AzTEC-Ori 345 Y*? 05 35 31.6 -05 20 50           ~ 3 0
170 COUP J053531.8-052230 Y*? 05 35 31.819 -05 22 30.08           ~ 6 0
171 [CRW97] OMC-3 MMS 10 cor 05 35 31.91 -05 05 51.1           ~ 30 0
172 [NW2007] OrionAN-0535324-50633 Y*? 05 35 32.4 -05 06 33           ~ 1 0
173 [NW2007] OrionAN-0535327-52126 Y*? 05 35 32.7 -05 21 26           ~ 1 0
174 [NW2007] OrionAS-0535330-61245 Y*? 05 35 33.0 -06 12 45           ~ 2 0
175 JCMTSE J053533.3-051920 Y*? 05 35 33.3 -05 19 20           ~ 3 0
176 [NW2007] OrionAS-0535335-60500 Y*? 05 35 33.5 -06 05 00           ~ 1 0
177 JCMTSF J053534.4-045950 Y*? 05 35 34.26 -04 59 54.5           ~ 5 0
178 [SKN2015] AzTEC-Ori 354 Y*? 05 35 34.9 -05 08 21           ~ 4 0
179 [SKN2015] AzTEC-Ori 353 Y*? 05 35 35.26262 -05 13 52.2751           ~ 6 0
180 [NW2007] OrionAN-0535354-52130 Y*? 05 35 35.4 -05 21 30           ~ 2 0
181 [NW2007] OrionAN-0535358-51838 Y*? 05 35 35.8 -05 18 38           ~ 1 0
182 [NW2007] OrionAS-0535361-60547 cor 05 35 36.1 -06 05 47           ~ 3 0
183 [NW2007] OrionAN-0535366-51559 Y*? 05 35 36.6 -05 15 59           ~ 2 0
184 JCMTSF J053537.3-050615 Y*? 05 35 37.3 -05 06 15           ~ 3 0
185 JCMTSE J053537.2-060938 Y*? 05 35 37.44 -06 09 43.1           ~ 5 0
186 COUP 1541 Y*? 05 35 37.863 -05 18 26.13           ~ 7 0
187 [NW2007] OrionAS-0535380-60723 Y*? 05 35 38.0 -06 07 23           ~ 1 0
188 JCMTSF J053538.5-051515 Y*? 05 35 38.04 -05 15 10.1           ~ 4 0
189 [SKN2015] C18O-Ori 214 Y*? 05 35 38.15 -05 00 56.9           ~ 6 0
190 [SKN2015] AzTEC-Ori 369 Y*? 05 35 38.5 -05 17 21           ~ 6 0
191 [NW2007] OrionAN-0535394-50627 Y*? 05 35 39.60 -05 06 25.7           ~ 4 0
192 JCMTSE J053539.7-051927 Y*? 05 35 39.7 -05 19 27           ~ 3 0
193 JCMTSF J053539.7-051857 Y*? 05 35 39.7 -05 18 57           ~ 3 0
194 [NW2007] OrionAN-0535403-50648 Y*? 05 35 40.3 -05 06 48           ~ 1 0
195 [NW2007] OrionAS-0535405-60648 Y*? 05 35 40.5 -06 06 48           ~ 1 0
196 [NW2007] OrionAS-0535405-60540 cor 05 35 40.5 -06 05 40           ~ 3 0
197 JCMTSE J053541.3-050233 cor 05 35 41.22 -05 02 28.6           ~ 7 0
198 [NW2007] OrionAN-0535413-52021 Y*? 05 35 41.3 -05 20 21           ~ 1 0
199 [SKN2015] AzTEC-Ori 382 Y*? 05 35 42.5 -05 20 57           ~ 2 0
200 [NW2007] OrionAS-0535428-60754 Y*? 05 35 42.8 -06 07 54           ~ 2 0
201 JCMTSF J053547.6-062626 Y*? 05 35 47.6 -06 26 26           ~ 3 0
202 [NW2007] OrionAS-0535516-63456 Y*? 05 35 51.6 -06 34 56           ~ 2 0
203 V* V1296 Ori TT* 05 35 52.0289569800 -06 10 01.702207704   16.65 14.4 13.29 11.94723 K2.0 64 0
204 [NW2007] OrionAS-0535522-62634 Y*? 05 35 52.2 -06 26 34           ~ 2 0
205 SMZ 19 Y*? 05 35 53.4 -06 24 33           ~ 5 0
206 JCMTSE J053556.8-062556 Y*? 05 35 56.8 -06 25 56           ~ 4 0
207 JCMTSF J053610.1-062350 Y*? 05 36 10.1 -06 23 50           ~ 2 0
208 [NW2007] OrionAS-0536119-63350 Y*? 05 36 11.9 -06 33 50           ~ 2 0
209 JCMTSF J053612.1-062550 Y*? 05 36 12.1 -06 25 50           ~ 3 0
210 JCMTSE J053610.9-061038 cor 05 36 12.4 -06 10 44           ~ 10 0
211 2MASS J05361721-0638016 Y*O 05 36 17.214 -06 38 01.63           ~ 17 0
212 JCMTSE J053617.4-062356 Y*? 05 36 17.4 -06 23 56           ~ 2 0
213 [NW2007] OrionAS-0536179-64544 Y*? 05 36 17.9 -06 45 44           ~ 3 0
214 JCMTSF J053618.2-062326 Y*? 05 36 18.2 -06 23 26           ~ 3 0
215 JCMTSE J053618.2-061209 cor 05 36 18.2 -06 12 09           ~ 5 0
216 [NW2007] OrionAS-0536186-64737 Y*? 05 36 18.6 -06 47 37           ~ 2 0
217 2MASS J05361945-0629068 Y*O 05 36 19.459 -06 29 06.84           ~ 16 0
218 [NW2007] OrionAS-0536196-62209 Y*? 05 36 19.6 -06 22 09           ~ 3 0
219 JCMTSE J053620.6-061309 Y*? 05 36 20.62 -06 13 13.8           ~ 3 0
220 2MASS J05362187-0623299 Or* 05 36 21.8781306672 -06 23 29.933756052           M1 43 0
221 JCMTSF J053622.2-061303 Y*? 05 36 22.85 -06 13 04.4           ~ 4 0
222 [NW2007] OrionAS-0536229-64618 Y*? 05 36 22.9 -06 46 18           ~ 3 0
223 HOPS 178 Y*O 05 36 24.61 -06 22 41.3           ~ 27 0
224 JCMTSE J053624.6-061403 cor 05 36 24.75 -06 14 03.5           ~ 8 0
225 [NW2007] OrionAS-0536248-62454 cor 05 36 24.8 -06 24 54           ~ 4 0
226 [NW2007] OrionAS-0536259-64440 Y*? 05 36 25.9 -06 44 40           ~ 3 0
227 [NW2007] OrionAS-0536273-64730 Y*? 05 36 27.3 -06 47 30           ~ 2 0
228 [NW2007] OrionAS-0536288-62504 Y*? 05 36 28.8 -06 25 04           ~ 1 0
229 JCMTSE J053629.1-061509 cor 05 36 29.22 -06 15 08.6           ~ 6 0
230 JCMTSE J053631.5-062515 Y*? 05 36 31.5 -06 25 15           ~ 4 0
231 [NW2007] OrionAS-0536318-62628 cor 05 36 31.8 -06 26 28           ~ 3 0
232 JCMTSF J053633.1-063815 Y*? 05 36 33.1 -06 38 15           ~ 4 0
233 JCMTSE J053635.9-064015 Y*? 05 36 35.9 -06 40 15           ~ 2 0
234 JCMTSE J053636.3-061257 cor 05 36 36.3 -06 12 57           ~ 5 0
235 [SMZ2002] Outflow 59 Y*? 05 36 36.4 -06 38 58           ~ 8 0
236 2MASS J05363699-0614579 Y*O 05 36 36.992 -06 14 57.97           ~ 22 0
237 JCMTSE J053637.1-062509 Y*? 05 36 37.1 -06 25 09           ~ 2 0
238 JCMTSE J053640.7-062850 Y*? 05 36 40.7 -06 28 50           ~ 4 0
239 [NW2007] OrionAS-0536414-62627 cor 05 36 41.4 -06 26 27           ~ 4 0
240 [NW2007] OrionAS-0536486-62838 cor 05 36 48.6 -06 28 38           ~ 3 0
241 JCMTSE J053651.6-062950 cor 05 36 51.6 -06 29 50           ~ 5 0
242 JCMTSE J053658.0-063114 Y*? 05 36 58.0 -06 31 14           ~ 4 0
243 2MASS J05370047-0637103 Y*O 05 37 00.479 -06 37 10.31           ~ 24 0
244 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
245 LDN 1641 MoC 05 39.0 -07 00           ~ 502 0
246 [NW2007] OrionBS-0540544-22733 Y*? 05 40 54.4 -02 27 33           ~ 1 0
247 JCMTSF J054057.4-020726 Y*? 05 40 57.4 -02 07 26           ~ 3 0
248 [NW2007] OrionBS-0540579-22534 Y*? 05 40 57.9 -02 25 34           ~ 1 0
249 HGBS J054058.8-022715 Y*? 05 40 58.48 -02 27 18.3           ~ 5 0
250 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 555 0
251 [NW2007] OrionBS-0540590-20853 Y*? 05 40 59.0 -02 08 53           ~ 1 0
252 JCMTSF J054103.4-015556 Y*? 05 41 03.4 -01 55 56           ~ 3 0
253 HGBS J054107.2-022721 Y*? 05 41 07.0 -02 27 21           ~ 11 0
254 [NW2007] OrionBS-0541107-15809 Y*? 05 41 10.7 -01 58 09           ~ 1 0
255 [NW2007] OrionBS-0541113-14812 Y*? 05 41 11.3 -01 48 12           ~ 2 0
256 [NW2007] OrionBS-0541133-14735 Y*? 05 41 13.3 -01 47 35           ~ 2 0
257 HGBS J054115.9-022837 Y*? 05 41 15.50 -02 28 24.3           ~ 5 0
258 [NW2007] OrionBS-0541161-21534 Y*? 05 41 16.1 -02 15 34           ~ 1 0
259 [NW2007] OrionBS-0541166-15119 Y*? 05 41 16.6 -01 51 19           ~ 2 0
260 [NW2007] OrionBS-0541193-22056 Y*? 05 41 19.3 -02 20 56           ~ 1 0
261 [NW2007] OrionBS-0541199-15416 Y*? 05 41 19.9 -01 54 16           ~ 2 0
262 HGBS J054119.6-022755 Y*? 05 41 20.30 -02 27 51.3           ~ 5 0
263 [NW2007] OrionBS-0541234-15027 Y*? 05 41 23.4 -01 50 27           ~ 2 0
264 [NW2007] OrionBS-0541236-22901 Y*? 05 41 23.6 -02 29 01           ~ 1 0
265 [NW2007] OrionBS-0541241-21711 Y*? 05 41 24.1 -02 17 11           ~ 1 0
266 [NW2007] OrionBS-0541257-21809 Y*? 05 41 25.7 -02 18 09           ~ 1 0
267 HGBS J054125.7-021605 Y*? 05 41 25.70 -02 16 05.6           ~ 4 0
268 HGBS J054125.7-021927 Y*? 05 41 25.71 -02 19 27.3           ~ 5 0
269 HGBS J054127.8-022400 Y*? 05 41 27.51 -02 23 54.3           ~ 5 0
270 [NW2007] OrionBS-0541276-14813 Y*? 05 41 27.6 -01 48 13           ~ 2 0
271 HGBS J054129.2-022007 Y*? 05 41 28.71 -02 20 06.3           ~ 5 0
272 HGBS J054129.8-022117 Y*O 05 41 29.40 -02 21 17.1           ~ 18 0
273 HGBS J054129.7-022318 Y*O 05 41 29.51 -02 23 18.3           ~ 6 0
274 HGBS J054131.0-021908 Y*? 05 41 30.91 -02 19 03.3           ~ 5 0
275 [NW2007] OrionBS-0541315-22542 Y*? 05 41 31.5 -02 25 42           ~ 1 0
276 [NW2007] OrionBS-0541321-22751 Y*? 05 41 32.1 -02 27 51           ~ 1 0
277 HGBS J054132.1-015428 Y*O 05 41 32.11 -01 54 27.3           ~ 4 0
278 JCMTSE J054133.4-014950 Y*? 05 41 33.31 -01 49 51.3           ~ 5 0
279 HGBS J054133.8-022057 Y*? 05 41 33.51 -02 20 54.3           ~ 5 0
280 [NW2007] OrionBS-0541354-15629 Y*? 05 41 35.4 -01 56 29           ~ 2 0
281 [NW2007] OrionBS-0541356-23011 Y*? 05 41 35.6 -02 30 11           ~ 1 0
282 [NW2007] OrionBS-0541362-15256 Y*? 05 41 36.2 -01 52 56           ~ 1 0
283 [NW2007] OrionBS-0541367-15106 Y*? 05 41 36.7 -01 51 06           ~ 2 0
284 JCMTSE J054136.6-014926 Y*? 05 41 36.71 -01 49 30.3           ~ 5 0
285 [NW2007] OrionBS-0541375-21733 Y*? 05 41 37.5 -02 17 33           ~ 1 0
286 NGC 2023 RNe 05 41 37.9 -02 15 52           ~ 657 1
287 HGBS J054140.5-021705 Y*? 05 41 40.52 -02 17 03.3           ~ 5 0
288 [MCK88] NGC 2024 FIR 2 Y*? 05 41 42.50 -01 54 06.0           ~ 38 0
289 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
290 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
291 HGBS J054143.1-021611 Y*? 05 41 43.14 -02 16 11.3           ~ 2 0
292 HGBS J054144.4-015248 Y*O 05 41 44.11 -01 52 54.3           ~ 6 0
293 HGBS J054144.3-015445 Y*O 05 41 44.31 -01 54 45.3           ~ 4 0
294 [NW2007] OrionBS-0541446-21704 Y*? 05 41 44.6 -02 17 04           ~ 1 0
295 [MCK88] NGC 2024 FIR 5 cor 05 41 44.6 -01 55 38           ~ 98 0
296 [MCK88] NGC 2024 FIR 7 cor 05 41 44.90 -01 56 15.0           ~ 33 0
297 [NW2007] OrionBS-0541471-21930 Y*? 05 41 47.1 -02 19 30           ~ 1 0
298 [NW2007] OrionBS-0541491-15803 Y*? 05 41 49.1 -01 58 03           ~ 2 0
299 HGBS J054149.5-015941 Y*O 05 41 49.52 -01 59 39.3           ~ 7 0
300 HGBS J054153.4-020016 Y*? 05 41 53.52 -02 00 21.3           ~ 7 0
301 [NW2007] OrionBS-0541542-20811 Y*? 05 41 54.2 -02 08 11           ~ 1 0
302 HGBS J054157.3-020101 Y*? 05 41 56.92 -02 00 54.3           ~ 7 0
303 HGBS J054159.7-015759 Y*? 05 41 59.77 -01 57 59.5           ~ 3 0
304 HGBS J054202.9-020745 Y*O 05 42 02.64 -02 07 45.8           ~ 19 0
305 [NW2007] OrionBS-0542035-20224 Y*? 05 42 03.5 -02 02 24           ~ 2 0
306 HGBS J054203.8-020421 Y*? 05 42 03.73 -02 04 21.3           ~ 6 0
307 HGBS J054210.8-020420 Y*? 05 42 10.94 -02 04 18.2           ~ 6 0
308 HGBS J054248.3-020849 Y*? 05 42 47.76 -02 08 45.1           ~ 3 0
309 NAME Orion A South MoC 05 43.0 -08 40           ~ 20 0
310 LDN 1630 DNe 05 45.5 -00 59           ~ 392 0
311 2MASS J05460363-0014493 Y*O 05 46 03.63 -00 14 49.3           ~ 78 0
312 [NW2007] OrionBN-0546046-01216 Y*? 05 46 04.6 -00 12 16           ~ 1 0
313 IRAS 05435-0015 Y*O 05 46 04.775 -00 14 16.51           ~ 79 0
314 [NW2007] OrionBN-0546049-00911 Y*? 05 46 04.9 -00 09 11           ~ 2 0
315 JCMTSE J054605.7-000939 Y*O 05 46 05.970 -00 09 32.69           ~ 14 0
316 NAME HH 24-26 MoC 05 46 07.34 -00 13 31.3           ~ 36 0
317 NAME HH 25-26 A Y*? 05 46 07.49 -00 13 38.7           ~ 4 0
318 HOPS 401 Y*O 05 46 07.720 -00 12 21.27           ~ 28 0
319 HBC 502 TT* 05 46 07.8799942272 -00 11 56.887013256     14.5     K3 56 0
320 IRAS 05435-0011 Y*O 05 46 08.45544 -00 10 02.9568           ~ 91 0
321 HGBS J054608.3-001044 Y*O 05 46 08.8 -00 10 47           ~ 92 0
322 [NW2007] OrionBN-0546091-00922 Y*? 05 46 09.1 -00 09 22           ~ 2 0
323 [JFM2001] SMM J054609-00058 Y*? 05 46 09.4 -00 05 51           ~ 6 0
324 HGBS J054610.0-001218 Y*O 05 46 10.0 -00 11 17           ~ 26 0
325 [NW2007] OrionBN-0546115-00917 Y*? 05 46 11.5 -00 09 17           ~ 2 0
326 HGBS J054612.3-000950 Y*? 05 46 12.5 -00 09 48           ~ 10 0
327 V* V1647 Ori Or* 05 46 13.1370578472 -00 06 04.885093296     18.1     M3.9 317 1
328 [NW2007] OrionBN-0546138-01008 Y*? 05 46 13.8 -00 10 08           ~ 2 0
329 HGBS J054613.5-000523 Y*O 05 46 13.81 -00 05 26.7           ~ 8 0
330 EM* LkHA 301 TT* 05 46 19.4689575480 -00 05 20.030650836   15.4 14.6     K2.5 46 0
331 OriBsmm 64 Y*? 05 46 23.1 -00 13 28           ~ 7 0
332 HGBS J054624.2-000000 Y*? 05 46 24.3 -00 00 01           ~ 10 0
333 HGBS J054625.3+002455 Y*? 05 46 25.20 +00 25 06.1           ~ 7 0
334 [NW2007] OrionBN-0546253+02220 Y*? 05 46 25.3 +00 22 20           ~ 3 0
335 HGBS J054626.7+000107 Y*? 05 46 26.8 +00 01 11           ~ 10 0
336 [MAW2001] LBS17-MM5 Y*? 05 46 27.6 +00 01 31           ~ 4 0
337 HGBS J054627.8-000053 Y*O 05 46 27.9 -00 00 52           ~ 28 0
338 HGBS J054627.9-000141 Y*? 05 46 28.1 -00 01 40           ~ 13 0
339 HGBS J054628.2+001927 Y*O 05 46 28.40 +00 19 27.1           ~ 23 1
340 [NW2007] OrionBN-0546288+00435 Y*? 05 46 28.8 +00 04 35           ~ 2 0
341 HGBS J054628.7+002110 Y*? 05 46 29.20 +00 21 09.1           ~ 8 0
342 [NW2007] OrionBN-0546294+02010 Y*? 05 46 29.4 +00 20 10           ~ 3 0
343 2MASS J05463064-0002349 Y*O 05 46 30.645 -00 02 34.97           ~ 41 0
344 [MAW2001] LBS17-MM10 Y*? 05 46 32.3 -00 00 40           ~ 9 0
345 HGBS J054633.3-000003 Y*O 05 46 33.5 -00 00 05           ~ 8 0
346 [NW2007] OrionBN-0546335+00526 Y*? 05 46 33.5 +00 05 26           ~ 2 0
347 [NW2007] OrionBN-0546347+02359 Y*? 05 46 34.7 +00 23 59           ~ 3 0
348 HGBS J054635.1+000032 Y*? 05 46 35.5 +00 00 34           ~ 10 0
349 HGBS J054636.1+000547 Y*? 05 46 36.3 +00 05 49           ~ 9 0
350 2MASS J05463755+0000338 Y*O 05 46 37.551 +00 00 33.80           ~ 22 0
351 [NW2007] OrionBN-0546380+02653 Y*? 05 46 38.0 +00 26 53           ~ 3 0
352 HGBS J054640.3+000031 Y*? 05 46 39.1 +00 00 34           ~ 11 0
353 HGBS J054639.3+000110 Y*O 05 46 39.4 +00 01 11           ~ 11 0
354 HGBS J054639.7+000416 Y*O 05 46 39.58 +00 04 16.6           ~ 14 0
355 HGBS J054643.0+000047 Y*O 05 46 43.0 +00 00 47           ~ 11 0
356 HGBS J054642.7-000145 Y*? 05 46 43.41 -00 01 47.7           ~ 8 0
357 [NW2007] OrionBN-0546450+00021 Y*? 05 46 45.0 +00 00 21           ~ 2 0
358 HGBS J054645.4+000716 Y*? 05 46 45.7 +00 07 18           ~ 7 0
359 M 78 RNe 05 46 45.8 +00 04 45   8.0       ~ 397 0
360 [NW2007] OrionBN-0546459+02507 Y*? 05 46 45.9 +00 25 07           ~ 3 0
361 HGBS J054647.3+000026 Y*O 05 46 47.69 +00 00 25.3           ~ 15 0
362 HGBS J054648.6+000121 Y*O 05 46 48.21 +00 01 33.2           ~ 11 0
363 [NW2007] OrionBN-0546484+01012 Y*? 05 46 48.80 +00 10 06.2           ~ 3 0
364 HGBS J054649.3+000900 Y*? 05 46 49.31 +00 09 00.1           ~ 5 0
365 HGBS J054650.0+000203 Y*? 05 46 50.0 +00 02 06           ~ 13 0
366 [NW2007] OrionBN-0546509-00129 Y*? 05 46 50.9 -00 01 29           ~ 1 0
367 HGBS J054651.8+000912 Y*? 05 46 51.40 +00 09 09.2           ~ 8 0
368 [NW2007] OrionBN-0546528+02223 Y*? 05 46 52.8 +00 22 23           ~ 3 0
369 [NW2007] OrionBN-0546532-00018 Y*? 05 46 53.2 -00 00 18           ~ 2 0
370 HGBS J054653.8+000440 Y*? 05 46 54.40 +00 04 42.2           ~ 6 0
371 JCMTSF J054655.0+002326 Y*? 05 46 55.0 +00 23 25           ~ 5 0
372 HGBS J054657.2+002356 Y*O 05 46 57.2 +00 23 57           ~ 9 0
373 HD 290860 * 05 46 57.4384881168 +00 20 10.182907896   10.14 9.91     A5 9 0
374 HGBS J054658.1+002429 Y*? 05 46 57.8 +00 24 30           ~ 8 0
375 HGBS J054659.0+002258 Y*? 05 46 59.60 +00 23 09.1           ~ 6 0
376 [NW2007] OrionBN-0547010+02042 Y*? 05 47 01.0 +00 20 42           ~ 2 0
377 JCMTSF J054701.0+002620 Y*? 05 47 01.0 +00 26 19           ~ 9 0
378 [KDJ2016] J054701.5+002457 Y*? 05 47 01.60 +00 24 57.1           ~ 3 0
379 2MASS J05470160+0017594 Y*O 05 47 01.605 +00 17 59.43           ~ 20 0
380 HGBS J054702.7-000245 Y*? 05 47 02.5 -00 02 43           ~ 5 0
381 [NW2007] OrionBN-0547034+01950 Y*? 05 47 03.4 +00 19 50           ~ 3 0
382 [NW2007] OrionBN-0547041+02158 Y*? 05 47 04.1 +00 21 58           ~ 2 0
383 [NW2007] OrionBN-0547050+01449 Y*? 05 47 05.0 +00 14 49           ~ 3 0
384 HGBS J054705.0+001703 Y*? 05 47 05.00 +00 17 00.1           ~ 9 0
385 HGBS J054705.2+001324 Y*? 05 47 05.2 +00 13 21           ~ 10 0
386 HGBS J054706.5+001232 Y*? 05 47 06.6 +00 12 32           ~ 10 0
387 [NW2007] OrionBN-0547067+02314 Y*? 05 47 06.60 +00 23 15.1           ~ 4 0
388 [NW2007] OrionBN-0547069+02239 Y*? 05 47 06.9 +00 22 39           ~ 2 0
389 HGBS J054707.9+002508 Y*? 05 47 07.9 +00 25 07           ~ 6 0
390 [NW2007] OrionBN-0547087+01817 Y*? 05 47 08.7 +00 18 17           ~ 3 0
391 [NW2007] OrionBN-0547089+02356 Y*? 05 47 08.9 +00 23 56           ~ 3 0
392 NGC 2071 RNe 05 47 10 +00 18.0           ~ 661 1
393 [NW2007] OrionBN-0547104+02327 Y*? 05 47 10.4 +00 23 27           ~ 3 0
394 2MASS J05471062+0021149 Y*O 05 47 10.62744 +00 21 14.9616           ~ 29 0
395 HGBS J054710.4+001550 Y*? 05 47 10.80 +00 15 51.1           ~ 8 0
396 HGBS J054710.7+001322 Y*? 05 47 11.00 +00 13 24.2           ~ 9 0
397 [NW2007] OrionBN-0547119+02223 Y*? 05 47 11.9 +00 22 23           ~ 2 0
398 [JFM2001] SMM J054712+00156 Y*? 05 47 12.2 +00 15 37           ~ 7 0
399 [NW2007] OrionBN-0547124+02311 Y*? 05 47 12.4 +00 23 11           ~ 3 0
400 [NW2007] OrionBN-0547152+01830 Y*? 05 47 15.2 +00 18 30           ~ 2 0
401 HGBS J054716.0+002123 Y*O 05 47 16.0 +00 21 24           ~ 17 0
402 [NW2007] OrionBN-0547175+02240 Y*? 05 47 17.5 +00 22 40           ~ 3 0
403 [NW2007] OrionBN-0547197+02231 Y*? 05 47 19.7 +00 22 31           ~ 3 0
404 HGBS J054719.9+001601 Y*? 05 47 20.20 +00 16 06.1           ~ 6 0
405 HGBS J054723.7+001056 Y*? 05 47 23.78 +00 10 56.1           ~ 6 0
406 [NW2007] OrionBN-0547239+01507 Y*? 05 47 24.40 +00 15 12.1           ~ 4 0
407 HGBS J054724.9+002058 Y*O 05 47 24.81 +00 20 59.9           ~ 21 0
408 HGBS J054725.1+001847 Y*? 05 47 25.0875696185 +00 18 49.317500819           ~ 10 0
409 HGBS J054726.1+001956 Y*? 05 47 26.2 +00 19 56           ~ 8 0
410 2MASS J05473239+0020217 Y*O 05 47 32.395 +00 20 21.77           ~ 14 0
411 [NW2007] OrionBN-0547336+01902 Y*? 05 47 33.6 +00 19 02           ~ 3 0
412 HGBS J054735.0+002022 Y*? 05 47 35.1 +00 20 21           ~ 7 0
413 [NW2007] OrionBN-0547377+02001 Y*? 05 47 37.7 +00 20 01           ~ 2 0
414 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
415 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1

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