2008AJ....135.2095D

Query : 2008AJ....135.2095D

2008AJ....135.2095D - Astron. J., 135, 2095-2107 (2008/June-0)

A WIYN near-infrared investigation of three massive star-forming regions.

DEVINE K.E., CHURCHWELL E.B., INDEBETOUW R., WATSON C. and CRAWFORD S.M.

Abstract (from CDS):

We investigate three embedded massive star-forming regions using the Near-Infrared Imager (NIRIM) camera on the 3.5 m WIYN telescope. We report J-, H-, and K'-band photometry in the clusters AFGL437, AFGL5180, and AFGL5142, and use these results to probe the stellar populations, extinction, and ages of the clusters. We find that all three clusters suffer significant extinction (AK∼ 1), have ages ≤ 5 Myr, and are actively forming stars. The background-corrected percentages of cluster members identified as young stellar objects (YSOs) in AFGL437, AFGL5180, and AFGL5142 are 58%±15%, 75%±10%, and 78%±15%, respectively. The slopes of the K-band luminosity functions (KLFs) for these clusters are ∼0.3-0.4, similar to that in other young clusters. Both the percentage of YSOs and KLF slopes of these clusters indicate that their ages are <5 Myr. We investigate the consequences of incompleteness in areas of high background emission and stellar density, and find that it contributes significant uncertainty to the determination of cluster properties. We find that age determination using only near-IR (NIR) photometry has an uncertainty of ∼3 Myr.

Abstract Copyright: ∼

Journal keyword(s): infrared: stars - open clusters and associations: general - stars: luminosity function, mass function

VizieR on-line data: <Available at CDS (J/AJ/135/2095): table2.dat>

Nomenclature: Table 2: [DCI2008] AFGL437 NN (Nos 1-48), [DCI2008] AFGL5180 NN (Nos 1-83), [DCI2008] AFGL5142 NN (Nos 1-55).

Simbad objects: 169

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Number of rows : 169
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* DY Psc BY* 00 24 24.6317407560 -01 58 19.954412004     19.42 17.301 15.022 M9.5V 220 1
2 4C 48.05 Rad 01 05 09.130 +48 51 46.33           ~ 9 1
3 LP 591-256 LM* 03 04 02.0608672392 +00 45 51.164454168   19.0 15.44 16.5 14.4 M6+D 37 0
4 [DCI2008] AFGL437 46 Y*? 03 07 17.990 +58 31 40.37           ~ 1 0
5 [DCI2008] AFGL437 45 Y*? 03 07 18.620 +58 30 52.27           ~ 1 0
6 [DCI2008] AFGL437 44 Y*? 03 07 18.660 +58 30 34.02           ~ 1 0
7 [DCI2008] AFGL437 43 Y*? 03 07 19.020 +58 30 09.65           ~ 1 0
8 [DCI2008] AFGL437 42 * 03 07 19.5435008736 +58 31 11.301821508           ~ 1 0
9 [DCI2008] AFGL437 40 Y*? 03 07 20.430 +58 30 43.09           ~ 1 0
10 [DCI2008] AFGL437 39 Y*? 03 07 20.710 +58 31 38.42           ~ 1 0
11 [DCI2008] AFGL437 38 Y*? 03 07 20.780 +58 30 39.50           ~ 1 0
12 [DCI2008] AFGL437 37 * 03 07 21.2325440736 +58 31 38.836028568           ~ 1 0
13 [DCI2008] AFGL437 36 * 03 07 21.530 +58 30 22.78           ~ 1 0
14 [DCI2008] AFGL437 35 Y*? 03 07 22.240 +58 30 33.15           ~ 1 0
15 [DCI2008] AFGL437 33 Y*? 03 07 22.3363521288 +58 31 00.529548960           ~ 1 0
16 [DCI2008] AFGL437 34 * 03 07 22.350 +58 30 52.09           ~ 1 0
17 [DCI2008] AFGL437 30 * 03 07 22.780 +58 30 09.08           ~ 1 0
18 [DCI2008] AFGL437 29 Y*? 03 07 22.960 +58 30 58.10           ~ 1 0
19 [DCI2008] AFGL437 28 Y*? 03 07 23.110 +58 30 41.54           ~ 1 0
20 [DCI2008] AFGL437 27 Y*? 03 07 23.520 +58 31 04.83           ~ 1 0
21 [DCI2008] AFGL437 26 * 03 07 23.680 +58 30 32.73           ~ 1 0
22 [DCI2008] AFGL437 25 Y*? 03 07 23.6959912992 +58 30 49.960441152           ~ 1 0
23 [DCI2008] AFGL437 24 * 03 07 23.750 +58 31 10.09           ~ 1 0
24 [DCI2008] AFGL437 23 Y*? 03 07 23.780 +58 30 42.85           ~ 1 0
25 [DCI2008] AFGL437 22 * 03 07 23.870 +58 30 22.14           ~ 1 0
26 [DCI2008] AFGL437 21 Y*? 03 07 23.930 +58 30 37.30           ~ 1 0
27 [DCI2008] AFGL437 20 Y*? 03 07 24.100 +58 31 16.11           ~ 1 0
28 HHL 5 HII 03 07 24.2 +58 30 45           ~ 152 0
29 [WBB81] GL437N Y*O 03 07 24.2530242216 +58 30 54.826982640           ~ 15 0
30 [DCI2008] AFGL437 18 EB* 03 07 24.3589968865 +58 31 15.379874712           ~ 2 0
31 [DCI2008] AFGL437 17 * 03 07 24.410 +58 30 09.04           ~ 1 0
32 [DCI2008] AFGL437 15 * 03 07 24.560 +58 31 23.99           ~ 1 0
33 [DCI2008] AFGL437 11 * 03 07 26.6642837208 +58 31 30.498160548           ~ 1 0
34 [DCI2008] AFGL437 9 * 03 07 26.9788694064 +58 30 52.942340052           ~ 1 0
35 [DCI2008] AFGL437 8 Y*? 03 07 27.400 +58 30 45.14           ~ 1 0
36 [DCI2008] AFGL437 7 * 03 07 27.540 +58 31 02.43           ~ 1 0
37 [DCI2008] AFGL437 5 * 03 07 28.740 +58 30 54.73           ~ 1 0
38 [DCI2008] AFGL437 2 * 03 07 29.720 +58 31 23.41           ~ 1 0
39 NGC 1342 26 * 03 32 02.6035744556 +37 20 39.283560035   14.32 13.55     ~ 11 0
40 LBN 159.17+03.33 HII 04 58 45.7 +47 59 36           ~ 86 1
41 [DCI2008] AFGL5142 55 Y*? 05 30 44.020 +33 47 16.79           ~ 1 0
42 2MASS J05304411+3348062 Y*O 05 30 44.0954789112 +33 48 06.051442896           ~ 2 0
43 ZTF J053044.39+334718.8 BY* 05 30 44.3855932224 +33 47 18.799988316           ~ 4 0
44 [DCI2008] AFGL5142 51 Y*? 05 30 44.520 +33 47 22.20           ~ 1 0
45 [DCI2008] AFGL5142 50 * 05 30 44.710 +33 48 03.60           ~ 1 0
46 [DCI2008] AFGL5142 49 * 05 30 44.830 +33 47 48.85           ~ 1 0
47 [DCI2008] AFGL5142 47 * 05 30 45.430 +33 47 06.71           ~ 1 0
48 [DCI2008] AFGL5142 46 Y*? 05 30 45.530 +33 47 32.28           ~ 1 0
49 [DCI2008] AFGL5142 45 Y*? 05 30 45.550 +33 47 51.36           ~ 1 0
50 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 210 2
51 [DCI2008] AFGL5142 44 Y*? 05 30 45.960 +33 47 55.31           ~ 1 0
52 [CYY2005] NIRS 16 Y*O 05 30 46.26 +33 47 20.2           ~ 3 0
53 [CYY2005] NIRS 24 Y*O 05 30 46.340 +33 48 09.72           ~ 2 0
54 [DCI2008] AFGL5142 41 * 05 30 46.420 +33 48 04.68           ~ 1 0
55 [DCI2008] AFGL5142 40 * 05 30 46.510 +33 47 56.04           ~ 1 0
56 [DCI2008] AFGL5142 39 Y*? 05 30 46.700 +33 48 43.20           ~ 1 0
57 [DCI2008] AFGL5142 37 * 05 30 46.9980288120 +33 48 16.077391236           ~ 1 0
58 [DCI2008] AFGL5142 36 Y*? 05 30 47.020 +33 47 12.12           ~ 1 0
59 [DCI2008] AFGL5142 35 Y*? 05 30 47.040 +33 48 03.24           ~ 1 0
60 [DCI2008] AFGL5142 34 Y*? 05 30 47.330 +33 47 20.41           ~ 1 0
61 [DCI2008] AFGL5142 33 Y*? 05 30 47.400 +33 47 52.07           ~ 1 0
62 [DCI2008] AFGL5142 32 Y*? 05 30 47.540 +33 47 57.11           ~ 1 0
63 [DCI2008] AFGL5142 30 * 05 30 47.690 +33 47 51.72           ~ 1 0
64 [DCI2008] AFGL5142 29 Y*? 05 30 47.760 +33 47 34.80           ~ 1 0
65 2MASS J05304783+3347378 Y*O 05 30 47.83 +33 47 37.8           ~ 3 0
66 2MASS J05304798+3347549 Y*O 05 30 47.982 +33 47 54.94           ~ 7 0
67 2MASS J05304798+3347099 Y*O 05 30 47.9951307432 +33 47 10.054197636           ~ 4 0
68 [DCI2008] AFGL5142 25 Y*? 05 30 48.030 +33 46 57.72           ~ 1 0
69 [DCI2008] AFGL5142 24 Y*? 05 30 48.070 +33 47 47.40           ~ 1 0
70 [DCI2008] AFGL5142 23 * 05 30 48.190 +33 48 03.60           ~ 1 0
71 2MASS J05304830+3347345 Y*O 05 30 48.31 +33 47 34.6           ~ 3 0
72 [DCI2008] AFGL5142 21 Y*? 05 30 48.340 +33 48 24.84           ~ 1 0
73 [DCI2008] AFGL5142 20 Y*? 05 30 48.450 +33 48 03.97           ~ 1 0
74 2MASS J05304851+3347506 Y*O 05 30 48.5270079600 +33 47 50.578903644           ~ 2 0
75 [DCI2008] AFGL5142 18 Y*? 05 30 48.650 +33 48 00.73           ~ 1 0
76 [DCI2008] AFGL5142 17 Y*? 05 30 48.740 +33 47 06.00           ~ 1 0
77 [DCI2008] AFGL5142 16 * 05 30 48.840 +33 48 27.00           ~ 1 0
78 [DCI2008] AFGL5142 15 * 05 30 49.010 +33 47 45.61           ~ 1 0
79 [DCI2008] AFGL5142 14 Y*? 05 30 49.200 +33 47 44.88           ~ 1 0
80 2MASS J05304920+3347385 Y*O 05 30 49.2175255968 +33 47 38.564805192           ~ 5 0
81 [DCI2008] AFGL5142 11 Y*? 05 30 49.220 +33 47 47.03           ~ 1 0
82 [DCI2008] AFGL5142 12 Y*? 05 30 49.2347319744 +33 46 59.554108740           ~ 1 0
83 [DCI2008] AFGL5142 10 Y*? 05 30 49.2615665640 +33 48 36.241002000           ~ 1 0
84 [DCI2008] AFGL5142 8 Y*? 05 30 49.390 +33 48 02.88           ~ 1 0
85 [DCI2008] AFGL5142 9 Y*? 05 30 49.4126259024 +33 47 16.096059384           ~ 1 0
86 2MASS J05304975+3347144 Y*O 05 30 49.75 +33 47 14.5           ~ 3 0
87 [DCI2008] AFGL5142 5 * 05 30 50.2112745984 +33 47 09.627344952           ~ 1 0
88 [DCI2008] AFGL5142 6 * 05 30 50.230 +33 47 45.61           ~ 1 0
89 [CYY2005] NIRS 78 Y*O 05 30 50.26 +33 47 03.0           ~ 3 0
90 [DCI2008] AFGL5142 4 Y*? 05 30 50.280 +33 47 56.40           ~ 1 0
91 [DCI2008] AFGL5142 2 * 05 30 50.380 +33 47 56.40           ~ 1 0
92 2MASS J05305060+3347595 Y*O 05 30 50.6008253904 +33 47 59.615307240           ~ 3 0
93 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
94 [DCI2008] AFGL5180 83 Y*? 06 08 50.900 +21 38 25.55           ~ 1 0
95 [DCI2008] AFGL5180 82 * 06 08 51.430 +21 38 36.24           ~ 1 0
96 [DCI2008] AFGL5180 79 Y*? 06 08 51.770 +21 38 16.19           ~ 1 0
97 [DCI2008] AFGL5180 78 Y*? 06 08 51.800 +21 38 21.44           ~ 1 0
98 [DCI2008] AFGL5180 76 Y*? 06 08 51.960 +21 38 51.76           ~ 1 0
99 [DCI2008] AFGL5180 74 Y*? 06 08 52.050 +21 37 51.96           ~ 1 0
100 [DCI2008] AFGL5180 73 Y*? 06 08 52.110 +21 38 18.31           ~ 1 0
101 [DCI2008] AFGL5180 72 * 06 08 52.200 +21 38 34.98           ~ 1 0
102 [DCI2008] AFGL5180 71 Y*? 06 08 52.290 +21 38 29.79           ~ 1 0
103 [DCI2008] AFGL5180 69 Y*? 06 08 52.340 +21 38 25.98           ~ 1 0
104 [DCI2008] AFGL5180 68 * 06 08 52.350 +21 38 38.22           ~ 1 0
105 [DCI2008] AFGL5180 66 * 06 08 52.6384501608 +21 38 51.887252688           ~ 1 0
106 [DCI2008] AFGL5180 65 * 06 08 52.830 +21 38 26.85           ~ 1 0
107 [DCI2008] AFGL5180 62 * 06 08 53.210 +21 38 08.23           ~ 1 0
108 [DCI2008] AFGL5180 61 * 06 08 53.210 +21 38 55.32           ~ 1 0
109 [DCI2008] AFGL5180 60 Y*? 06 08 53.350 +21 38 34.48           ~ 1 0
110 [DCI2008] AFGL5180 59 Y*? 06 08 53.470 +21 38 36.96           ~ 1 0
111 [DCI2008] AFGL5180 58 Y*? 06 08 53.600 +21 37 57.22           ~ 1 0
112 [DCI2008] AFGL5180 57 Y*? 06 08 53.660 +21 38 23.03           ~ 1 0
113 [DCI2008] AFGL5180 54 Y*? 06 08 53.710 +21 38 03.95           ~ 1 0
114 [DCI2008] AFGL5180 53 * 06 08 53.750 +21 38 28.93           ~ 1 0
115 [DCI2008] AFGL5180 51 Y*? 06 08 53.780 +21 38 01.43           ~ 1 0
116 [DCI2008] AFGL5180 50 Y*? 06 08 53.820 +21 38 44.56           ~ 1 0
117 [DCI2008] AFGL5180 49 Y*? 06 08 53.920 +21 38 33.54           ~ 1 0
118 2MASS J06085395+2138184 Y*? 06 08 53.96 +21 38 18.4           ~ 2 0
119 [DCI2008] AFGL5180 47 Y*? 06 08 54.080 +21 38 24.33           ~ 1 0
120 [DCI2008] AFGL5180 46 * 06 08 54.080 +21 38 50.39           ~ 1 0
121 RAFGL 5180 SFR 06 08 54.1 +21 38 25           ~ 125 0
122 [DCI2008] AFGL5180 45 Y*? 06 08 54.140 +21 38 29.90           ~ 1 0
123 [DCI2008] AFGL5180 44 * 06 08 54.150 +21 38 20.83           ~ 1 0
124 2MASS J06085426+2138245 Y*? 06 08 54.2729263320 +21 38 24.283560444   17.49 15.91 15.34   ~ 2 0
125 [DCI2008] AFGL5180 39 Y*? 06 08 54.3165280584 +21 38 27.313176480           ~ 1 0
126 [DCI2008] AFGL5180 38 Y*? 06 08 54.340 +21 38 16.44           ~ 1 0
127 [DCI2008] AFGL5180 35 Y*? 06 08 54.360 +21 37 48.65           ~ 1 0
128 [DCI2008] AFGL5180 36 Y*? 06 08 54.360 +21 38 10.68           ~ 1 0
129 [DCI2008] AFGL5180 34 Y*? 06 08 54.430 +21 38 08.99           ~ 1 0
130 [DCI2008] AFGL5180 33 Y*? 06 08 54.500 +21 37 57.29           ~ 1 0
131 [DCI2008] AFGL5180 32 Y*? 06 08 54.5189642328 +21 38 11.890329000           ~ 1 0
132 [DCI2008] AFGL5180 31 Y*? 06 08 54.530 +21 38 07.11           ~ 1 0
133 [DCI2008] AFGL5180 30 * 06 08 54.600 +21 38 27.67           ~ 1 0
134 [DCI2008] AFGL5180 29 Y*? 06 08 54.740 +21 38 33.21           ~ 1 0
135 [DCI2008] AFGL5180 28 Y*? 06 08 54.750 +21 38 28.04           ~ 1 0
136 [DCI2008] AFGL5180 27 Y*? 06 08 54.790 +21 38 13.63           ~ 1 0
137 [BKH2005] 08576nr227 Y*? 06 08 54.810 +21 38 48.91           ~ 1 0
138 [DCI2008] AFGL5180 25 * 06 08 54.940 +21 38 30.98           ~ 1 0
139 [DCI2008] AFGL5180 24 * 06 08 55.140 +21 38 46.25           ~ 1 0
140 [DCI2008] AFGL5180 23 Y*? 06 08 55.230 +21 37 51.13           ~ 1 0
141 [DCI2008] AFGL5180 22 Y*? 06 08 55.260 +21 38 34.87           ~ 1 0
142 [DCI2008] AFGL5180 21 Y*? 06 08 55.620 +21 38 41.49           ~ 1 0
143 [DCI2008] AFGL5180 20 Y*? 06 08 55.700 +21 38 32.79           ~ 1 0
144 [DCI2008] AFGL5180 19 Y*? 06 08 55.860 +21 38 26.95           ~ 1 0
145 [DCI2008] AFGL5180 18 Y*? 06 08 55.890 +21 38 25.04           ~ 1 0
146 [DCI2008] AFGL5180 17 Y*? 06 08 56.070 +21 38 25.80           ~ 1 0
147 [DCI2008] AFGL5180 16 Y*? 06 08 56.1009999240 +21 38 01.073768712           ~ 1 0
148 [DCI2008] AFGL5180 15 * 06 08 56.400 +21 38 15.44           ~ 1 0
149 [DCI2008] AFGL5180 14 * 06 08 56.750 +21 38 48.87           ~ 1 0
150 [DCI2008] AFGL5180 13 * 06 08 56.820 +21 38 22.42           ~ 1 0
151 [DCI2008] AFGL5180 12 Y*? 06 08 56.920 +21 38 58.45           ~ 1 0
152 [DCI2008] AFGL5180 11 Y*? 06 08 57.860 +21 38 01.43           ~ 1 0
153 [DCI2008] AFGL5180 10 Y*? 06 08 58.5627590088 +21 38 56.284186776           ~ 1 0
154 [DCI2008] AFGL5180 9 Y*? 06 08 58.570 +21 38 40.88           ~ 1 0
155 [DCI2008] AFGL5180 8 Y*? 06 08 58.580 +21 38 19.32           ~ 1 0
156 [DCI2008] AFGL5180 7 Y*? 06 08 58.740 +21 38 08.81           ~ 1 0
157 [DCI2008] AFGL5180 6 Y*? 06 08 58.7770870752 +21 38 17.530276920           ~ 1 0
158 [DCI2008] AFGL5180 5 Y*? 06 08 58.800 +21 38 47.40           ~ 1 0
159 [DCI2008] AFGL5180 4 Y*? 06 08 58.810 +21 38 48.66           ~ 1 0
160 [DCI2008] AFGL5180 3 * 06 08 59.050 +21 38 26.37           ~ 1 0
161 [DCI2008] AFGL5180 2 Y*? 06 09 00.090 +21 38 04.56           ~ 1 0
162 [DCI2008] AFGL5180 1 Y*? 06 09 00.260 +21 39 05.22           ~ 1 0
163 TYC 3395-149-1 * 07 00 51.8055476712 +48 29 23.152167816   13.363 12.801 12.650   G0 10 0
164 LP 605-23 PM* 08 32 30.4836775707 -01 34 38.551452575   20.2 18.44     M6Ve 44 0
165 GSPC P 91-D * 09 42 58.8 +59 03 43           ~ 4 0
166 NGC 3576 HII 11 11 53.2 -61 18 26           ~ 245 2
167 [DBS2003] 131 OpC 13 11 39.400 -62 33 11.55           ~ 16 0
168 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
169 NAME W 42 Cluster cor 18 38 15.204 -06 47 52.87           ~ 23 0

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