2010A&A...509A.104D


Query : 2010A&A...509A.104D

2010A&A...509A.104D - Astronomy and Astrophysics, volume 509, A104-104 (2010/1-1)

Analysis of the stellar population in the central area of the HII region Sh 2-284.

DELGADO A.J., DJUPVIK A.A. and ALFARO E.J.

Abstract (from CDS):

There is a lack of state-of-the-art information on very young open clusters with implications for determining the structure of the Galaxy. Our main objective is to study the timing and location of the star formation processes which yielded the generation of the giant HII region Sh 2-284. This includes the determination of different physical variables of the stars, such as distance, reddening, age and evolutionary stage, including pre-main-sequence (PMS) stars.The analysis is based on UBVRCIC CCD measurements of a field of 6.5'x6.5' containing the cluster, and JHKs photometry in the 3.5'x3.5' subfield, centered in the apparent higher condensation. The determination of cluster distance, reddening and age is carried out through a comparison with ZAMS, post-MS and PMS isochrones. The reference lines used are obtained from theoretical post-MS and PMS isochrones from the Geneva and Yale groups for a metallicity of Z=0.004, which agrees with the spectroscopic metallicity determination published for several cluster members. The results amount to E(B-V)=0.78±0.02, DM=12.8±0.2 (3.6kpc), LogAge(yr)=6.51 ±0.07 (3.2Myr). The distance result critically depends on the use of low metallicity ZAMS and isochrones. A PMS member sequence is proposed, with an age of LogAge(yr)=6.7±0.2 (4.7Myr) which is therefore coeval within the errors with the post-MS cluster age. The mass function for this population in the mass range above 1.3-3.5 M is well fitted by a Salpeter mass function. The presence of a different star generation in the cluster with a distinctly older age of around 40 Myr is suggested. On the other hand, the NIR photometry results indicate a large number of sources with (H-Ks) excess, practically distinct from the optical PMS candidate members. The analysis of our deep UBVRIJHK photometry of Dolidze 25 therefore reveals a young cluster with coeval MS and PMS populations of age 3.2-5 Myr. In addition, a distinctly older cluster member population of the age of 40 Myr is suggested. The distance determined for the cluster from quantitative fits to ZAMS and isochrones is distinctly lower than previously published values. This result originates in the consistent use of low metallicity models for ZAMS fitting, applying published metallicity values for the cluster.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: Dolidze 25 - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/A+A/509/A104): table1.dat>

Nomenclature: Table 1: [DDA2010] NNNN N=1673 among (Nos 2-2634).

Simbad objects: 147

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Number of rows : 147
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10465 1
2 NAME Gal Anticenter reg 05 46 +28.9           ~ 830 0
3 NGC 2244 OpC 06 32 11 +04 54.8           ~ 601 1
4 2MASS J06445289+0014570 Y*O 06 44 52.8980059032 +00 14 57.090621336 17.21 17.06 16.16 15.61   ~ 1 0
5 2MASS J06445316+0016103 Y*O 06 44 53.1608762976 +00 16 10.218045396 18.60 18.14 17.16 16.52   ~ 1 0
6 [DDA2010] 100 Y*O 06 44 53.7206492880 +00 14 37.718376504   22.70 21.00 19.91 18.75 ~ 1 0
7 2MASS J06445376+0012276 Y*O 06 44 53.7622981296 +00 12 27.577563948 18.66 18.39 17.42 16.78 16.04 ~ 1 0
8 2MASS J06445379+0011564 Y*O 06 44 53.7929795928 +00 11 56.407048152 16.02 15.93 15.22 14.74   ~ 1 0
9 2MASS J06445449+0015223 Y*O 06 44 54.4904557176 +00 15 22.103332380 21.15 19.98 18.67 17.81 17.00 ~ 1 0
10 2MASS J06445471+0014461 Y*O 06 44 54.6887341368 +00 14 46.157230212 19.63 19.05 17.99 17.25 16.61 ~ 1 0
11 2MASS J06445497+0016445 Y*O 06 44 54.9645258816 +00 16 44.662579716 20.23 19.73 18.56 17.82 17.02 ~ 1 0
12 2MASS J06445568+0015307 * 06 44 55.6882182696 +00 15 30.656452104 18.13 17.90 17.03 16.46   ~ 1 0
13 2MASS J06445675+0010549 Y*O 06 44 56.7567076200 +00 10 55.004878956 19.53 18.84 17.73 17.13 16.34 ~ 1 0
14 2MASS J06445699+0013011 Y*O 06 44 57.0079905096 +00 13 01.277977692 21.27 20.31 18.86 17.92 16.90 ~ 1 0
15 [DDA2010] 431 Y*O 06 44 57.0293709264 +00 14 59.943426684   22.30 20.67 19.60 18.45 ~ 1 0
16 [DDA2010] 436 Y*O 06 44 57.0765512184 +00 13 16.262217480   22.42 20.80 19.70 18.61 ~ 1 0
17 2MASS J06445718+0012365 Y*O 06 44 57.1930285296 +00 12 36.541707840 19.76 19.23 18.05 17.19 16.44 ~ 2 0
18 [DDA2010] 463 Y*O 06 44 57.2559620304 +00 16 33.768229764   22.63 20.96 19.87 18.71 ~ 1 0
19 2MASS J06445727+0014155 Y*O 06 44 57.2779044192 +00 14 15.543795984 17.24 16.96 16.24 15.83 15.42 ~ 1 0
20 2MASS J06445762+0015569 Y*O 06 44 57.6258933696 +00 15 56.766162564 21.72 20.90 19.45 18.52 17.43 ~ 1 0
21 [DDA2010] 513 * 06 44 57.7520005680 +00 14 44.730372264 21.93 21.25 19.84 18.93 17.90 ~ 1 0
22 [DDA2010] 541 Y*O 06 44 57.977 +00 14 01.04 18.45 18.14 17.36 16.85 16.25 ~ 1 0
23 2MASS J06445810+0016161 Y*O 06 44 58.1002707360 +00 16 16.083717492 17.69 17.21 16.28 15.70 15.00 ~ 1 0
24 2MASS J06445839+0013233 Y*O 06 44 58.3955226216 +00 13 23.366138520 20.72 19.58 18.35 17.54 16.76 ~ 1 0
25 2MASS J06445862+0016151 Y*O 06 44 58.6181039832 +00 16 15.153353616 19.26 18.52 17.24 16.38   ~ 1 0
26 [DDA2010] 640 Y*O 06 44 58.8600583704 +00 11 18.858784704   22.73 21.04 19.91 18.66 ~ 1 0
27 [DDA2010] 649 * 06 44 58.9474560264 +00 13 22.631102868 22.06 21.19 19.76 18.78 17.71 ~ 1 0
28 [DDA2010] 647 Y*O 06 44 58.9542757248 +00 14 04.310159712   22.11 20.49 19.45 18.34 ~ 1 0
29 2MASS J06445910+0016487 Y*O 06 44 59.1049346112 +00 16 48.730176408 20.87 19.53 18.14 17.24 16.31 ~ 1 0
30 2MASS J06445911+0011562 Y*O 06 44 59.1225207504 +00 11 56.264073324 18.84 18.26 17.01 16.29 15.59 ~ 1 0
31 [DDA2010] 731 Y*O 06 44 59.6283421560 +00 15 51.036987564   22.75 21.06 19.92 18.67 ~ 1 0
32 2MASS J06445984+0015311 * 06 44 59.8454833584 +00 15 31.114725408 18.36 18.07 17.13 16.61 15.91 ~ 1 0
33 [DDA2010] 786 * 06 45 00.0429360096 +00 15 20.158896708 20.97 20.38 19.15 18.37 17.49 ~ 1 0
34 2MASS J06450031+0014398 Y*O 06 45 00.3164462088 +00 14 39.843847428 17.98 17.80 17.03 16.48 15.88 ~ 1 0
35 2MASS J06450063+0012249 Y*O 06 45 00.6405282864 +00 12 24.907562640 18.61 18.14 17.18 16.49 15.85 ~ 1 0
36 2MASS J06450065+0015305 Y*O 06 45 00.6550715280 +00 15 30.480721308 20.36 19.24 17.64 16.60 15.39 ~ 1 0
37 2MASS J06450078+0013099 Y*O 06 45 00.7826638416 +00 13 09.972394932 21.67 20.62 19.08 18.06 16.93 ~ 1 0
38 2MASS J06450108+0014052 Y*O 06 45 01.1008353432 +00 14 05.361906948 20.72 20.07 18.76 17.90 16.91 ~ 1 0
39 2MASS J06450111+0013405 Y*O 06 45 01.1208512712 +00 13 40.593746028 20.76 19.83 18.40 17.47 16.47 ~ 1 0
40 [DDA2010] 927 Y*O 06 45 01.274 +00 14 23.45   22.26 20.55 19.48 18.33 ~ 1 0
41 2MASS J06450129+0013195 Y*O 06 45 01.2865230408 +00 13 19.594793316 19.93 19.20 18.10 17.41 16.64 ~ 1 0
42 [DDA2010] 1022 * 06 45 01.8874952208 +00 16 55.724130012 21.45 20.98 19.77 18.96 17.95 ~ 1 0
43 2MASS J06450189+0017035 Y*O 06 45 01.8876838104 +00 17 03.742540224   19.69 18.55 17.79 16.87 ~ 1 0
44 Cl* Dolidze 25 MV 16a * 06 45 02.1024926088 +00 13 16.491549396 13.32 13.65 13.05 12.67 12.13 ~ 3 0
45 2MASS J06450212+0012121 Y*O 06 45 02.1265940064 +00 12 12.237098472 18.90 18.22 17.16 16.50 15.81 ~ 1 0
46 Cl* Dolidze 25 MV 15 V* 06 45 02.1776207616 +00 13 29.490750228 11.69 12.42 11.79 11.51 10.48 B1V 15 0
47 2MASS J06450221+0011026 Y*O 06 45 02.2182106560 +00 11 02.735990268 18.81 18.22 17.25 16.70 15.93 ~ 1 0
48 2MASS J06450223+0014151 Y*O 06 45 02.2308531840 +00 14 15.214548120 17.13 16.89 16.13 15.62 14.97 ~ 1 0
49 [DDA2010] 1068 Y*O 06 45 02.2632076800 +00 11 23.721516024   22.36 20.74 19.63 18.47 ~ 1 0
50 2MASS J06450233+0012558 Y*O 06 45 02.3335849248 +00 12 55.988104428 22.07 21.10 19.53 18.49 17.27 ~ 2 0
51 2MASS J06450240+0013186 Y*O 06 45 02.404 +00 13 18.66 16.74 16.67 15.98 15.47 14.86 ~ 1 0
52 2MASS J06450239+0013256 Y*O 06 45 02.4089430576 +00 13 25.598378424   18.47 17.47 16.72 15.99 ~ 1 0
53 2MASS J06450245+0016590 Y*O 06 45 02.4618052320 +00 16 58.850253732 21.74 21.07 19.55 18.58 17.42 ~ 1 0
54 2MASS J06450246+0011518 Y*O 06 45 02.4737098536 +00 11 51.921634920 20.93 19.54 18.21 17.33 16.42 ~ 1 0
55 2MASS J06450265+0017059 Y*O 06 45 02.6538886920 +00 17 05.912921436   19.28 18.20 17.52 16.78 ~ 1 0
56 2MASS J06450265+0016417 Y*O 06 45 02.656 +00 16 41.80 17.91 17.32 16.47 15.85 15.09 ~ 1 0
57 Cl* Dolidze 25 MV 18 V* 06 45 02.6607050160 +00 14 21.896771748 13.47 13.85 13.29 12.95 12.47 F5 6 0
58 2MASS J06450271+0011540 Y*O 06 45 02.7140360088 +00 11 54.033827100 19.16 18.53 17.50 16.90 16.28 ~ 1 0
59 [DDA2010] 1141 Y*O 06 45 02.8054532352 +00 14 17.846746476 18.73 18.36 17.52 17.00 16.33 ~ 1 0
60 2MASS J06450314+0015255 Y*O 06 45 03.1309875408 +00 15 25.527418956 19.25 18.81 17.84 17.26 16.54 ~ 1 0
61 2MASS J06450315+0016561 * 06 45 03.1361519928 +00 16 56.356425228 20.13 19.62 18.55 17.86 17.00 ~ 1 0
62 [DDA2010] 1189 Y*O 06 45 03.1960942392 +00 13 09.790749120   22.11 20.42 19.36 18.23 ~ 1 0
63 [DDA2010] 1214 * 06 45 03.3620494056 +00 15 36.902624904 22.13 21.62 20.28 19.40 18.35 ~ 1 0
64 Cl* Dolidze 25 MV 19 * 06 45 03.5711927352 +00 12 56.974845564 12.57 13.20 12.71 12.65 11.85 B2III 5 0
65 2MASS J06450359+0015564 * 06 45 03.5842113696 +00 15 56.636317872 21.27 20.80 19.61 18.86 17.96 ~ 1 0
66 2MASS J06450425+0010599 Y*O 06 45 04.2584185056 +00 10 59.986312320 21.74 20.77 19.33 18.32 17.26 ~ 1 0
67 2MASS J06450441+0016098 * 06 45 04.4173685520 +00 16 10.205328900 20.99 20.26 19.06 18.33 17.34 ~ 1 0
68 2MASS J06450443+0014351 Y*O 06 45 04.4295549504 +00 14 35.266598844 18.56 18.24 17.39 16.77 16.11 ~ 1 0
69 2MASS J06450470+0013021 Y*O 06 45 04.7111120928 +00 13 02.252630028 20.52 19.40 18.23 17.46 16.71 ~ 1 0
70 Cl* Dolidze 25 MV 17 * 06 45 04.7130201216 +00 13 47.287205400 11.51 12.133 11.452 11.258 10.17 B8 12 0
71 2MASS J06450477+0014379 * 06 45 04.7720837928 +00 14 37.937325084 17.34 17.18 16.48 15.87 15.08 ~ 1 0
72 2MASS J06450529+0014147 Pu* 06 45 05.2907379768 +00 14 14.791780932 16.13 16.02 15.29 14.79 14.12 ~ 2 0
73 [DDA2010] 1421 Y*O 06 45 05.3673327936 +00 13 13.842084108   23.58 21.69 20.43 19.11 ~ 1 0
74 2MASS J06450537+0012138 * 06 45 05.3751682368 +00 12 14.321684304 20.49 19.91 18.77 18.04 17.25 ~ 1 0
75 2MASS J06450547+0015282 Y*O 06 45 05.4765645576 +00 15 28.260550908 20.26 19.74 18.57 17.79 16.84 ~ 1 0
76 [DDA2010] 1441 * 06 45 05.5546335840 +00 16 42.766347936 21.97 21.40 20.07 19.26 18.29 ~ 1 0
77 C 0642+003 OpC 06 45 06 +00 18.0   8.19 7.6     ~ 70 1
78 [DDA2010] 1522 * 06 45 06.4023438912 +00 13 00.505796592 20.55 20.09 18.97 18.21 17.37 ~ 1 0
79 2MASS J06450645+0013369 Y*O 06 45 06.4598470584 +00 13 37.025534496 20.02 19.41 18.11 17.27 16.28 ~ 1 0
80 2MASS J06450663+0012133 Y*O 06 45 06.6325897656 +00 12 13.410053388 19.00 18.64 17.66 16.94 16.30 ~ 1 0
81 2MASS J06450680+0012549 * 06 45 06.8081999376 +00 12 54.969126804 16.12 16.15 15.54 15.14 14.66 ~ 2 0
82 2MASS J06450681+0013535 Y*O 06 45 06.8151521568 +00 13 53.521096836 18.33 17.72 16.59 15.83 14.94 G0V 4 0
83 2MASS J06450692+0014011 Y*O 06 45 06.9268206024 +00 14 01.032707904 20.47 19.67 18.21 17.25 16.19 ~ 1 0
84 2MASS J06450698+0015467 Y*O 06 45 06.9828752592 +00 15 46.711163880 17.06 16.65 15.92 15.51   ~ 1 0
85 2MASS J06450726+0013306 * 06 45 07.2528399384 +00 13 30.657753228 18.45 18.07 17.29 16.84 16.19 ~ 1 0
86 2MASS J06450758+0014482 Y*O 06 45 07.5846513552 +00 14 48.208861212 19.17 18.60 17.60 17.00 16.21 ~ 1 0
87 [DDA2010] 1689 Y*O 06 45 07.9674673248 +00 12 58.700272788   22.06 20.43 19.38 18.30 ~ 1 0
88 2MASS J06450812+0012214 Y*O 06 45 08.1316986552 +00 12 21.590371332 16.33 16.25 15.54 15.12 14.58 ~ 1 0
89 2MASS J06450823+0016542 Y*O 06 45 08.2447943832 +00 16 54.298646652 19.54 18.95 17.88 17.15 16.30 ~ 1 0
90 2MASS J06450830+0015079 Y*O 06 45 08.3087719296 +00 15 07.894631376 19.30 18.67 17.57 16.86 15.95 ~ 1 0
91 2MASS J06450855+0012074 Y*O 06 45 08.5568358888 +00 12 07.618225860 19.01 18.49 17.29 16.51   ~ 1 0
92 2MASS J06450874+0015380 Y*O 06 45 08.7422979144 +00 15 38.018076660 20.05 18.92 17.67 16.85 16.00 ~ 1 0
93 2MASS J06450907+0013577 Y*O 06 45 09.0704002128 +00 13 57.605552760 19.55 18.97 17.95 17.25 16.51 ~ 1 0
94 2MASS J06450912+0015266 Y*O 06 45 09.1191742152 +00 15 26.643397356 18.72 18.26 17.30 16.62 15.92 ~ 1 0
95 2MASS J06450912+0012085 Y*O 06 45 09.1216467864 +00 12 08.575652232 18.01 17.46 16.51 15.94   ~ 1 0
96 2MASS J06450921+0013370 Y*O 06 45 09.2188220376 +00 13 37.087882536 16.20 16.03 15.32 14.87 14.35 ~ 1 0
97 2MASS J06450922+0012140 Y*O 06 45 09.2336916816 +00 12 14.023678284 20.45 19.56 18.48 17.73 17.04 ~ 1 0
98 2MASS J06450966+0012217 * 06 45 09.6609819168 +00 12 21.779465904 15.74 15.88 15.29 14.96 14.48 ~ 1 0
99 [DDA2010] 1887 Y*O 06 45 09.9405060864 +00 12 12.820904856 18.61 18.10 17.14 16.56 15.90 ~ 1 0
100 2MASS J06451007+0014117 Y*O 06 45 10.0743865920 +00 14 11.702716044 17.20 16.62 15.71 15.11 14.29 ~ 3 0
101 Cl* Dolidze 25 MV 22 * 06 45 10.4361532512 +00 11 16.552364748 11.90 12.57 12.10 12.00 11.15 B1V 10 0
102 2MASS J06451066+0014281 * 06 45 10.6658416608 +00 14 28.173502392 18.40 18.04 17.22 16.57 15.98 ~ 1 0
103 [DDA2010] 1959 Y*O 06 45 10.8766380408 +00 11 48.260638428   22.08 20.51 19.44 18.37 ~ 1 0
104 2MASS J06451102+0015357 Y*O 06 45 11.0231553888 +00 15 35.692359156 18.93 18.48 17.43 16.73 15.91 ~ 1 0
105 2MASS J06451118+0011402 Y*O 06 45 11.1911884608 +00 11 40.390211184 21.75 20.82 19.42 18.39 17.08 M1V 2 0
106 2MASS J06451127+0012463 * 06 45 11.274 +00 12 46.37 15.94 16.03 15.41 15.07 14.60 ~ 2 0
107 2MASS J06451136+0012355 Y*O 06 45 11.3599895952 +00 12 35.502590268 18.97 18.34 17.29 16.70 16.05 ~ 1 0
108 [DDA2010] 2018 Y*O 06 45 11.453 +00 12 45.91 19.83 19.20 17.89 17.13 16.17 ~ 1 0
109 2MASS J06451202+0017033 Y*O 06 45 12.0211575168 +00 17 03.321801204   18.35 17.45 16.79 16.10 ~ 1 0
110 2MASS J06451246+0013096 * 06 45 12.4677184296 +00 13 09.615187164 14.63 14.92 14.40 14.10 13.68 ~ 1 0
111 [DDA2010] 2130 * 06 45 12.8483437584 +00 14 26.182300236 21.60 21.10 19.82 18.97 18.00 ~ 1 0
112 [DDA2010] 2157 * 06 45 13.1648245536 +00 12 56.512742724 20.83 20.14 18.98 18.24 17.49 ~ 1 0
113 2MASS J06451333+0010518 Y*O 06 45 13.3436231064 +00 10 51.855868704 17.03 16.86 16.00 15.60 14.94 ~ 1 0
114 2MASS J06451339+0014060 * 06 45 13.3791613824 +00 14 06.453952512 21.13 20.61 19.42 18.60 17.70 ~ 1 0
115 2MASS J06451338+0016141 Y*O 06 45 13.3922528592 +00 16 14.171599200 19.05 18.56 17.43 16.69   ~ 1 0
116 [DDA2010] 2210 Y*O 06 45 13.7383420632 +00 12 04.680498096   23.62 21.78 20.51 19.20 ~ 1 0
117 2MASS J06451378+0012508 Y*O 06 45 13.7881593336 +00 12 50.904754272 18.57 18.23 17.34 16.85 16.17 ~ 1 0
118 2MASS J06451412+0011364 Y*O 06 45 14.1258785904 +00 11 36.435929892 20.66 19.85 18.47 17.50 16.55 ~ 2 0
119 2MASS J06451416+0010572 Y*O 06 45 14.1728613312 +00 10 57.271950696 19.58 18.40 17.18 16.40 15.53 ~ 1 0
120 2MASS J06451468+0014280 Y*O 06 45 14.6902275216 +00 14 27.829540212 20.02 19.33 18.26 17.57 16.92 ~ 1 0
121 2MASS J06451475+0014241 Y*O 06 45 14.7548635824 +00 14 24.141756912 19.34 18.28 17.18 16.42 15.71 ~ 1 0
122 [DDA2010] 2289 * 06 45 14.9152312128 +00 13 23.414358612 21.08 20.61 19.45 18.67 17.85 ~ 1 0
123 2MASS J06451507+0011553 * 06 45 15.0727000512 +00 11 55.327946028 18.35 18.04 17.12 16.54 15.96 ~ 1 0
124 2MASS J06451550+0014410 Y*O 06 45 15.4955692680 +00 14 41.001371088 20.12 19.01 17.92 17.14 16.31 ~ 1 0
125 2MASS J06451575+0014165 Y*O 06 45 15.7531544544 +00 14 16.484922816 18.58 18.11 16.94 16.22 15.36 ~ 1 0
126 2MASS J06451591+0016207 Y*O 06 45 15.9091482912 +00 16 20.654279076 18.12 17.58 16.62 15.95 15.25 ~ 1 0
127 2MASS J06451599+0016051 Y*O 06 45 15.9946346064 +00 16 05.124742536 16.00 15.71 14.98 14.51 14.16 ~ 1 0
128 2MASS J06451636+0010433 * 06 45 16.3766716824 +00 10 43.020554232 21.56 20.86 19.54 18.54 17.65 ~ 1 0
129 2MASS J06451642+0017064 Y*O 06 45 16.4281434000 +00 17 06.571030272   19.34 18.33 17.72 16.93 ~ 1 0
130 2MASS J06451669+0015250 Y*O 06 45 16.7015114736 +00 15 25.015793652 19.92 19.46 18.29 17.46 16.49 ~ 1 0
131 2MASS J06451685+0012593 Y*O 06 45 16.8606707640 +00 12 59.442207732 20.78 19.54 18.26 17.41 16.62 ~ 1 0
132 2MASS J06451714+0011314 Y*O 06 45 17.1358194984 +00 11 31.295756688 17.44 17.23 16.43 16.05 15.44 ~ 1 0
133 [DDA2010] 2494 Y*O 06 45 17.1759089640 +00 13 09.070248000   21.74 20.16 19.11 18.23 ~ 1 0
134 2MASS J06451724+0013054 * 06 45 17.2432434360 +00 13 05.468415240 17.61 17.47 16.52 16.00 15.26 ~ 1 0
135 2MASS J06451742+0015224 Y*O 06 45 17.4194375256 +00 15 22.376727072 21.21 20.20 18.74 17.65 16.04 ~ 1 0
136 2MASS J06451767+0011292 * 06 45 17.6845650072 +00 11 29.158259532 17.37 17.26 16.42 16.00 15.33 ~ 1 0
137 2MASS J06451773+0016516 Y*O 06 45 17.7344021136 +00 16 51.526918416 20.36 19.79 18.53 17.65 16.63 ~ 1 0
138 2MASS J06451778+0013173 Y*O 06 45 17.7880491648 +00 13 17.369470632 16.40 16.34 15.67 15.29 14.64 ~ 1 0
139 2MASS J06451783+0013445 Y*O 06 45 17.8382576160 +00 13 44.490473436 19.28 18.88 17.76 16.98 16.17 ~ 1 0
140 2MASS J06451798+0013271 Y*O 06 45 17.981 +00 13 27.13 20.44 19.64 18.53 17.77 17.12 ~ 1 0
141 [DDA2010] 2581 * 06 45 18.2190424032 +00 16 25.154493996 21.97 21.45 20.10 19.20 18.13 ~ 1 0
142 2MASS J06452163+0013005 Y*O 06 45 21.6308288136 +00 13 00.461986068   18.44 17.41 16.78 15.96 ~ 1 0
143 LBN 211.65-01.51 HII 06 45 28 +00 17.8           ~ 66 0
144 LBN 1032 HII 07 16 35 -09 25.7           ~ 37 0
145 RL 149 HS* 07 24 14.3741784768 -00 33 04.165016904 12.958 13.737 13.866 13.906 13.974 sdB 111 0
146 NGC 6530 OpC 18 04 31 -24 21.5           ~ 397 0
147 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2409 2

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2022.12.07-05:31:31

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