2009MNRAS.399..432N


Query : 2009MNRAS.399..432N

2009MNRAS.399..432N - Mon. Not. R. Astron. Soc., 399, 432-442 (2009/October-2)

Are pre-main-sequence stars older than we thought?

NAYLOR T.

Abstract (from CDS):

We fit the colour-magnitude diagrams of stars between the zero-age main-sequence and terminal-age main sequence in young clusters and associations. The ages we derive are a factor of 1.5-2 longer than the commonly used ages for these regions, which are derived from the positions of pre-main-sequence stars in colour-magnitude diagrams. From an examination of the uncertainties in the main-sequence and pre-main-sequence models, we conclude that the longer age scale is probably the correct one, which implies that we must revise upwards the commonly used ages for young clusters and associations. Such a revision would explain the discrepancy between the observational lifetimes of protoplanetary discs and theoretical calculations of the time to form planets. It would also explain the absence of clusters with ages between 5 and 30Myr.

We use the τ2 statistic to fit the main-sequence data, but find that we must make significant modifications if we are to fit sequences which have vertical segments in the colour-magnitude diagram. We present this modification along with improvements to the methods of calculating the goodness-of-fit statistic and parameter uncertainties.

Software implementing the methods described in this paper is available from http://www.astro.ex.ac.uk/people/timn/tau-squared/.


Abstract Copyright: © 2009 The Author. Journal compilation © 2009 RAS

Journal keyword(s): methods: statistical - stars: early-type - stars: formation - stars: fundamental parameters - stars: pre-main-sequence - open clusters and associations: general

VizieR on-line data: <Available at CDS (J/MNRAS/399/432): table1.dat tables.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 201

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Number of rows : 201
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * 16 Tau V* 03 44 48.2149362048 +24 17 22.083331452 5.09 5.42 5.46 5.42 5.47 B7IV 243 0
2 * 17 Tau Be* 03 44 52.5368818 +24 06 48.011217 3.19 3.59 3.70 3.71 3.80 B6IIIe 389 1
3 * 18 Tau PM* 03 45 09.7401340368 +24 50 21.343198416 5.21 5.57 5.64 5.61 5.68 B8V 265 0
4 * q Tau * 03 45 12.4957802 +24 28 02.209730 3.73 4.19 4.30 4.30 4.40 B6IV 268 0
5 * 20 Tau PM* 03 45 49.6065620 +24 22 03.886360 3.40 3.80 3.87 3.85 3.90 B8III 417 1
6 * 21 Tau PM* 03 45 54.4764507648 +24 33 16.235698248 5.49 5.72 5.76 5.71 5.74 B8V 208 0
7 * 22 Tau ** 03 46 02.9003257344 +24 31 40.428415632   6.402 6.421   6.41 A0Vn 157 0
8 * 23 Tau Be* 03 46 19.5738428 +23 56 54.081244 3.70 4.12 4.18   4.16 B6IV(e) 422 2
9 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3196 0
10 * eta Tau Be* 03 47 29.0765529 +24 06 18.488347 2.44 2.78 2.87 2.84 2.88 B7III 524 1
11 HD 23753 PM* 03 48 20.8167826752 +23 25 16.495877028 5.06 5.38 5.45 5.42 5.48 B8V 167 0
12 * 27 Tau SB* 03 49 09.7425852 +24 03 12.300277 3.18 3.54 3.63 3.62 3.68 B8III 378 0
13 * 28 Tau Be* 03 49 11.2165977912 +24 08 12.156712008 4.73 5.01 5.09   5.08 B8Vne 452 0
14 HD 23873 * 03 49 21.7502453688 +24 22 51.434157000   6.563 6.586   6.57 B9.5V 126 0
15 HD 23923 * 03 49 43.5315887616 +23 42 42.667696476   6.104 6.153   6.18 B8V 148 0
16 * phi01 Ori SB* 05 34 49.2380370 +09 29 22.487814 3.29 4.26 4.41 4.42 4.59 B0III 249 0
17 HD 245140 * 05 34 58.1788866096 +09 56 26.699247168   9.38 9.27     B9 9 0
18 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2150 1
19 HD 245168 * 05 35 02.9980210752 +09 56 04.798296348       9.81   B9 11 0
20 * lam Ori A Em* 05 35 08.2760807112 +09 56 02.991326316 2.17 3.48 3.47     O8III((f)) 496 0
21 * lam Ori ** 05 35 08.27761 +09 56 02.9611 2.45 3.48 3.66 3.72 3.89 O8IIIf+B0.5V 284 0
22 * lam Ori B * 05 35 08.4812956320 +09 56 06.099512244       5.29   B0.5V 130 0
23 HD 245185 Ae* 05 35 09.6034684104 +10 01 51.465413208 10.05 10.07 9.93     A0Vae 116 0
24 Cl Collinder 69 OpC 05 35 10 +09 48.8     2.8     ~ 271 0
25 HD 36895 * 05 35 12.7958879568 +09 36 47.754247968 5.91 6.61 6.73     B2IV-V 42 0
26 HD 36881 SB* 05 35 13.2466726656 +10 14 24.278794332 5.66 5.734 5.638     B9IIIp 62 0
27 HD 245203 * 05 35 13.8083363736 +09 41 49.458262668   7.37 7.47     B8V 18 0
28 HD 36894 * 05 35 16.7003814312 +09 46 39.443103984 8.46 7.48 7.62     B9V 20 0
29 HD 36913 * 05 35 25.3391923032 +10 31 03.483484212   8.38 8.31     A3 15 0
30 HD 37035 * 05 35 58.2527671344 +09 31 54.181204896   8.63 8.65     B9V 23 0
31 HD 37034 * 05 35 59.3888308632 +09 42 48.132492984   9.37 9.33     A0 10 0
32 HD 37051 * 05 36 04.1885065896 +09 49 54.986770416   9.17 9.20     B9V 15 0
33 HD 37110 * 05 36 29.6245074480 +09 37 54.178206456   8.96 8.98     A0 12 0
34 HD 294275 Y*O 05 37 31.8728831184 -02 45 18.469551240   9.51 9.42   9.360 A1 20 0
35 HD 37333 Y*O 05 37 40.4746109712 -02 26 36.837308472   8.59 8.51   8.420 A1Va(Si) 42 0
36 HD 294272A Y*O 05 38 34.8033395568 -02 34 15.788701740   8.41 8.39   8.400 B9.5III 23 0
37 HD 294271 Y*O 05 38 36.5498973360 -02 33 12.757741200   7.78 7.88   7.990 B5V 29 0
38 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 524 0
39 * sig Ori C Y*? 05 38 44.1189397296 -02 36 06.310060884   8.77 8.79   9.63 A2Vn 27 0
40 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 775 0
41 HD 37525 Y*O 05 39 01.4927799048 -02 38 56.364214344   7.98 8.06   8.210 B5V 71 1
42 HD 37545 Y*O 05 39 09.2140998192 -02 56 34.720052640   9.29 9.29   9.320 B9V 26 0
43 HD 37686 * 05 40 13.0895539944 -02 30 53.217797688   9.27 9.21   9.180 B9.5V 30 0
44 HD 37699 Y*O 05 40 20.1907288344 -02 26 08.229954660   7.50 7.62   7.770 B5III 48 0
45 HD 37648 * 05 41 05.4578456688 +24 21 00.932260392   8.09 7.61     F8 24 0
46 NGC 2169 OpC 06 08 30 +13 57.1   5.99 5.9     ~ 147 0
47 HD 47469 ** 06 39 11.173008 +09 38 45.45312   9.10 9.09 8.75   O/B2 25 0
48 HD 47553 * 06 39 35.0142186456 +10 14 26.195192520   8.50 8.54     B9III 16 0
49 V* V641 Mon El* 06 40 28.5859725984 +09 49 04.274157468 7.257 7.98 8.10 8.147 8.165 B1.5IV+(B2V) 100 0
50 V* V684 Mon EB* 06 40 38.3663658576 +09 47 16.046270268 7.71 8.31 8.44 8.492 8.516 B4 75 0
51 HD 47777 Y*O 06 40 42.2934096648 +09 39 21.310266708 6.95 7.79 7.93   7.721 B3V 104 0
52 HD 261810 Y*O 06 40 43.2266749368 +09 46 01.720075188 8.26 8.92 9.02 9.045 9.039 B1 59 0
53 HD 48012 Pu* 06 40 51.1606326792 +10 01 43.848813036 8.31 8.75 8.81   8.820 B6/9 39 0
54 HD 261878 * 06 40 51.5561543448 +09 51 49.380647832 8.42 8.98 9.08 9.149 9.191 B6V 60 0
55 NGC 2264 OpC 06 40 52 +09 52.6           ~ 1687 0
56 HD 261902 Y*O 06 40 58.5126133512 +09 33 31.721892912 9.88 10.20 10.23   10.174 B8 41 0
57 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.45 4.68   4.88 O7V+B1.5/2V 776 0
58 BD+10 1222 Y*O 06 41 00.0335922720 +09 52 17.871188556 9.42 9.82 9.88 9.932 9.929 A1V 41 0
59 HD 261938 Y*O 06 41 01.8776061384 +09 52 48.041278176 8.32 8.90 8.97 9.067 9.084 B3V 39 0
60 HD 261903 Y*O 06 41 02.8835159088 +09 27 23.465894652 8.65 9.03 9.10     B8Vn 33 0
61 HD 261940 * 06 41 04.1121827040 +09 33 01.883923164 9.65 10.00 10.06   10.060 B6/9 36 0
62 HD 261936 * 06 41 08.6356869768 +10 08 25.376185824   10.03 10.2     B6/9 12 0
63 HD 47887 Y*O 06 41 09.5990050152 +09 27 57.538520712 6.01 6.96 7.14   7.40 B2III: 102 0
64 NGC 2264 181 Y*O 06 41 11.2390661280 +09 52 55.737491268 9.773 9.98 10.03 10.113 10.081 B9Vn 38 0
65 HD 262013 Y*O 06 41 12.9352165416 +09 35 49.916028588 8.75 9.15 9.21   9.229 ~ 48 0
66 HD 47934 mul 06 41 22.039344 +09 43 51.63204 8.19 8.62 8.70 9.03 8.632 B6 52 0
67 HD 47961 Y*O 06 41 27.3048122400 +09 51 14.407496352 6.57 7.33 7.47   7.614 B2.5V 77 0
68 HD 48055 V* 06 41 49.7115983832 +09 30 29.360973708 8.17 8.83 8.96   9.033 B3V 54 0
69 CPD-24 2195 * 07 18 33.0712932288 -25 00 57.081682764 11.10 11.39 11.40 11.34 11.37 ~ 12 0
70 CPD-24 2198 * 07 18 34.2717210336 -24 56 45.127230792 10.73 11.16 11.17 11.10 11.13 ~ 12 0
71 CPD-24 2196 Y*O 07 18 34.4497909608 -24 55 15.683614644 10.882 10.72 10.76 10.743 10.773 B5/6V 19 0
72 CPD-24 2199 Y*O 07 18 34.4857147776 -24 59 17.103691392 11.831 11.44 11.46 11.409 11.430 ~ 14 0
73 CD-24 5170 Y*O 07 18 35.9496424464 -24 59 34.951625952 9.881 9.76 9.80 9.87 9.77 B5V 14 0
74 CD-24 5172 Y*O 07 18 36.8860831008 -24 56 05.727848064 10.095 9.99 10.05 9.973 10.029 B5V 16 0
75 CPD-24 2205 Y*O 07 18 37.4907711120 -24 57 42.131985408 8.67 9.43 9.54 9.61 9.57 B3V 15 0
76 CD-24 5171 Y*O 07 18 38.1330737160 -24 59 01.519537848 12.300 11.79 11.75 11.681 11.673 B9V: 8 0
77 CPD-24 2207 Y*O 07 18 38.4127477152 -24 58 20.003167272 8.671 9.43 9.6 9.553 9.641 B2V 18 0
78 CPD-24 2212 Y*O 07 18 40.8351287544 -24 58 27.447960828 9.767 10.37 10.43 10.359 10.413 B3Vn 17 0
79 NGC 2362 OpC 07 18 41 -24 57.2           ~ 380 0
80 CD-24 5175 Y*O 07 18 41.0744988552 -25 00 11.414819052 7.689 8.58 8.77 8.756 8.867 B2V 24 0
81 2MASS J07184199-2458122 Y*O 07 18 41.9869631568 -24 58 12.242647272 8.91 9.69 9.78 9.87 9.81 B2 15 0
82 NGC 2362 22 * 07 18 42.2717712024 -24 58 37.913026224 11.76 11.95 11.91 11.81 11.82 ~ 7 0
83 CPD-24 2217 Y*O 07 18 42.8585052672 -24 55 49.096386228 11.205 10.97 10.98 10.920 10.952 B7nn 11 0
84 2MASS J07184315-2453549 Y*O 07 18 43.1436865944 -24 53 54.936870216   10.78 10.77 10.80 10.68 ~ 16 0
85 CPD-24 2223 Y*O 07 18 45.7675338432 -24 59 35.643082812 10.496 10.36 10.38 10.380 10.438 B5V 19 0
86 CPD-24 2225 Y*O 07 18 46.1987491248 -24 57 47.566500480 9.38 10.10 10.15 10.22 10.13 B3V 15 0
87 CD-24 5180 Y*O 07 18 48.5358896160 -24 56 56.011066584 7.13 8.04 8.21 8.31 8.32 ~ 19 0
88 CPD-24 2229 Y*O 07 18 49.7080542816 -24 58 36.766064172 12.570 12.07 12.05 11.97 11.95 ~ 9 0
89 CD-24 5182 Y*O 07 18 49.8250337520 -24 57 48.675190824 8.39 9.20 9.31 9.40 9.34 B2V 20 0
90 CPD-24 2230 * 07 18 49.8469051680 -24 59 21.330004956 10.96 11.31 11.33 11.28 11.31 ~ 8 0
91 V* IM CMa Y*O 07 18 53.2237502952 -24 57 23.222590920 9.964 10.47 10.50 10.427 10.440 B5V 21 0
92 CPD-24 2237 Y*O 07 18 54.7106828808 -24 56 18.148651836   12.18 12.16 12.04 12.04 ~ 7 0
93 CPD-24 2244 Y*O 07 19 04.9377541512 -24 56 15.094576176 11.680 11.32 11.34 11.31 11.30 ~ 14 0
94 V* KW Vel a2* 08 08 41.6077338984 -49 29 50.021182608   8.13 8.23     ApSi 52 0
95 HD 68114 * 08 08 49.8143090808 -49 13 43.670938044   9.45 9.41     A0V 25 0
96 HD 68115 * 08 08 53.1025574160 -49 13 49.251464580   9.76 9.66     A0V 24 0
97 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 242 0
98 HD 68274 * 08 09 26.0289040656 -49 11 55.247695656   9.02 9.04     B9 20 0
99 HD 68305 ** 08 09 36.7078 -49 11 38.186   8.94 8.88     A1V 18 0
100 HD 68325 * 08 09 41.4917005728 -49 36 46.772286660   9.39 9.41     A0V 19 0
101 CD-48 3541 * 08 09 52.2146090976 -49 11 02.317127496   9.73 9.67     ~ 18 0
102 NGC 2547 OpC 08 09 52.360 -49 10 35.01           ~ 359 0
103 HD 68398 * 08 09 56.0015395224 -49 19 29.975884608   8.66 8.63     B9V 25 0
104 HD 68396 * 08 09 57.5328590400 -49 08 20.222536092   8.85 8.86 8.94   A0Vn 27 0
105 HD 68397 * 08 09 59.2156731840 -49 16 10.934990148   8.14 8.14     B7/9V 28 0
106 CD-48 3547 CV* 08 10 06.0739176720 -49 14 18.083781384   9.97 9.88 9.83   A1V 23 0
107 HD 68432 * 08 10 07.8599431008 -49 16 35.879719908 7.99 8.33 8.42     B8/9III/IV 26 0
108 HD 68420 * 08 10 08.4167952600 -49 00 43.434903816   9.93 9.84 9.94   A3V 23 0
109 HD 68451 * 08 10 16.0818194232 -49 02 05.711778132 6.56 7.19 7.32 7.36   B5II 43 0
110 HD 68478 * 08 10 20.5684356576 -49 14 14.494042104 5.65 6.300 6.447     B3III/IV 48 0
111 HD 68452 * 08 10 20.8176670392 -49 03 36.714635604   9.34 9.29     A1V 32 0
112 HD 68496 * 08 10 27.2436784248 -49 09 50.928876288   7.81 7.88 7.92   B5/7V 38 0
113 HD 68495 * 08 10 31.4497407456 -49 06 30.186840024   9.55 9.45     B9 31 0
114 HD 68516 * 08 10 33.8106562152 -49 32 38.157345780   9.84 9.78     A0V 19 0
115 HD 68578 * 08 10 54.3170008872 -48 51 31.275199116   8.62 8.59     A0V 13 0
116 HD 68608 * 08 10 59.5499675112 -49 17 03.870082212 7.25 7.77 7.88     B7III 42 0
117 HD 68631 * 08 11 08.6023793928 -49 00 16.116822000   10.08 9.96     A1/2IV/V 25 0
118 HD 68698 * 08 11 25.8583913304 -49 12 28.862441280   9.90 9.86     A1V 24 0
119 V* V407 Car a2* 10 38 17.5533646560 -65 02 30.968296872   6.646 6.711     B9Vn 83 0
120 HD 92536 * 10 39 22.8313738440 -64 06 42.438258936 5.95 6.238 6.314     B8V 64 0
121 HD 92715 * 10 40 42.1062180072 -64 39 11.462208876   6.772 6.800     B9.5V 43 0
122 HD 92783 * 10 41 06.4151530080 -64 28 27.769312128   6.642 6.689     B9V 59 0
123 HD 92966 * 10 42 25.1567646288 -64 23 55.721600772   7.25 7.25     B9V 39 0
124 IC 2602 OpC 10 42 27 -64 25.6           ~ 613 0
125 HD 93163 * 10 43 51.1941002232 -64 14 56.550797412 5.2 5.725 5.748     B3IV/V 71 0
126 HD 93194 * 10 44 06.9154919 -63 57 39.853461 4.03 4.649 4.789     B3/5Vn 84 0
127 HD 93540 * 10 46 16.5473233704 -64 30 52.422448716 4.79 5.24 5.34     B6Vnn 86 0
128 HD 93549 SB* 10 46 29.5881441504 -64 15 47.653678296 4.69 5.136 5.229     B6/7V 79 0
129 HD 93607 * 10 46 51.2189828556 -64 23 00.504549149 4.06 4.69 4.83     B4V 88 0
130 HD 93738 ** 10 47 53.5366177728 -64 15 46.204877412   6.442 6.452     B9.5V 48 0
131 HD 164536 * 18 02 38.6215585296 -24 15 19.374907140 6.46 7.37 7.40 8.26   O7.5V(n)z 59 0
132 CD-24 13785 * 18 02 39.7778217240 -24 14 47.555444796 7.92 9.27 9.13 9.45   OB 25 0
133 HD 314900 Y*? 18 02 53.2729793448 -24 20 17.007804348   10.54 10.41     A 14 0
134 HD 315027 * 18 03 46.8797386248 -24 16 45.976453680   10.949 10.805   10.538 F0 13 0
135 2MASS J18035583-2426364 Y*O 18 03 55.8240676560 -24 26 36.500276292   13.169 12.826   12.346 ~ 8 0
136 HD 164816 Be* 18 03 56.8425865728 -24 18 45.118050552 6.17 7.006 6.986 8.08 6.989 O9.5V+B0V 145 0
137 NGC 6530 15 * 18 04 01.2551734800 -24 23 47.401378584   11.75 11.58     B7V 12 0
138 2MASS J18040129-2426292 Y*O 18 04 01.2831360288 -24 26 29.265491580 11.974 11.646 11.446   11.157 B5.5V 17 0
139 NGC 6530 16 * 18 04 02.688 -24 10 55.05   12.403 12.151   11.812 ~ 11 0
140 NGC 6530 17 Y*O 18 04 04.3106114712 -24 21 30.469104324 12.505 12.155 11.946   11.698 B7V 19 0
141 CPD-24 6151 * 18 04 09.2379178752 -24 15 43.166747088   11.545 11.406   11.199 F5 12 0
142 2MASS J18040979-2420089 Y*O 18 04 09.8075962032 -24 20 08.987478864 12.229 11.879 11.621   11.170 A0 16 0
143 NGC 6530 24 * 18 04 10.0855882752 -24 24 11.337626520   12.13 11.95 12.01 11.541 B9 12 0
144 CPD-24 6152 Y*O 18 04 11.1598510296 -24 21 45.175823136   10.497 10.374   10.140 B2V 22 0
145 NGC 6530 31 Y*O 18 04 11.5832911608 -24 25 29.948671200 12.363 11.967 11.706   11.229 A0 17 0
146 HD 315026 ** 18 04 14.5189421200 -24 14 36.851688090 8.48 9.34 9.21 9.76   B0V 28 0
147 HD 315032 Y*O 18 04 15.0268429224 -24 23 27.713497344 9.170 9.164 9.122 9.71 9.039 B0IV 60 0
148 CPD-24 6159 * 18 04 16.5692775960 -24 17 16.562686488   11.237 11.086   10.849 F8 14 0
149 2MASS J18041678-2428371 Y*O 18 04 16.7820489432 -24 28 37.091010468 12.277 11.803 11.580   11.102 A0 17 0
150 HD 315023 * 18 04 20.5582786632 -24 13 54.787761984 9.65 10.182 10.028 10.24 9.753 OB 28 0
151 CD-24 13829 ** 18 04 21.2734315416 -24 21 18.110381292 8.47 9.476 9.453 9.651   B1.5Vne 42 0
152 CD-24 13830 Ae* 18 04 22.7421765936 -24 22 09.724518840 9.41 10.183 10.016 10.11 9.624 B2Ve 43 0
153 HD 315033 * 18 04 23.2279355376 -24 26 16.720588140 8.42 9.02 8.90     B1V 45 0
154 CPD-24 6164 * 18 04 23.9941418688 -24 21 26.706008844 9.13 9.890 9.740 9.98   B1Ve 34 0
155 NGC 6530 61 * 18 04 24.2929429728 -24 20 59.495770896 9.8 10.424 10.282   10.028 B1V 22 0
156 NGC 6530 64 Y*O 18 04 25.2767690832 -24 22 41.849706396 12.286 11.904 11.674   11.214 B5V 15 0
157 CD-24 13831 * 18 04 25.5554033664 -24 20 44.860145748 9.66 10.29 10.17     B1V 28 0
158 CPD-24 6170 * 18 04 27.2046934608 -24 22 49.636762212 10.07 10.67 10.54 10.61 10.179 B2V 20 0
159 HD 315031 SB* 18 04 28.0254107904 -24 21 42.788444328 7.68 9.170 9.090 9.16   B0.5IV/V+B1V 50 0
160 NGC 6530 74 Y*O 18 04 28.9891584504 -24 25 26.121604116 10.891 10.817 10.695   10.422 B2.5Ve 22 0
161 HD 315024 * 18 04 29.2696805472 -24 19 25.110290784 8.9 9.77 9.68 9.92   B0IV 34 0
162 NGC 6530 OpC 18 04 31 -24 21.5           ~ 382 0
163 2MASS J18043292-2418445 Y*O 18 04 32.9189018640 -24 18 44.497260936 10 10.61 10.454 10.61 10.245 B2.5Vne 30 0
164 CD-24 13837 * 18 04 32.9906237448 -24 23 12.478728588 8.74 9.630 9.610 9.82   B1V 35 0
165 HD 164933 * 18 04 33.0353661936 -24 09 38.273792904 7.94 9.330 9.300 9.40   B0III 38 0
166 NGC 6530 81 Y*O 18 04 33.0515693016 -24 22 52.949310888   11.937 11.754   11.391 ~ 16 0
167 NGC 6530 82 Y*O 18 04 33.1089996312 -24 21 15.421576428 13.213 12.696 12.380   11.838 ~ 14 0
168 V* V5563 Sgr EB* 18 04 34.2049522080 -24 22 00.550706448 9.38 9.93 9.8     B2V 34 0
169 2MASS J18043441-2428057 Y*O 18 04 34.4096422824 -24 28 05.612096640 12.452 12.176 11.920   11.463 A0 16 0
170 HD 315021 Y*O 18 04 35.9943009216 -24 19 52.030225308 8.892 8.553 8.509 9.41 8.397 B0V 58 0
171 NGC 6530 94 * 18 04 37.6619562816 -24 21 11.690007264   12.962 12.687   12.256 A 10 0
172 NGC 6530 97 Y*O 18 04 38.9657145072 -24 19 25.642621380   11.553 11.408   11.071 B9 17 0
173 NGC 6530 96 * 18 04 39.0275848848 -24 22 57.516517452   12.417 12.186 12.25 11.803 ~ 11 0
174 CD-24 13844 * 18 04 39.9049325736 -24 22 44.654595924 10.4 11.00 10.92 10.90 10.559 B7 21 0
175 HD 164947 Be* 18 04 41.65848 -24 20 56.9508 8.20         B1/B2Vne 44 0
176 HD 315022 * 18 04 42.79 -24 18 33.9   10.69 10.53     A3 14 0
177 2MASS J18044745-2418012 Y*O 18 04 47.4380796168 -24 18 01.417340232   12.968 12.640   12.122 K7.5-M0.5V 17 0
178 NGC 6530 110 * 18 04 47.7868368648 -24 28 24.146578092   11.465 11.221   10.834 B5 12 0
179 HD 165052 SB* 18 05 10.5506592816 -24 23 54.847798080 6.16 6.98 6.87 7.77   O5.5:Vz+O8:V 257 1
180 BD+61 2350 * 22 49 36.4514491128 +62 19 57.958847112 9.68 9.79 9.23     B1V 25 0
181 ALS 15847 * 22 51 42.9 +62 24 15 11.59 11.69 11.00     B2 9 0
182 HD 216532 V* 22 52 30.5558211936 +62 26 25.947105900 8.06 8.46 8.0     O8.5V(n) 136 0
183 BD+61 2357 ** 22 52 33.7571000712 +62 18 47.731386348 11.33 10.91 9.90 9.60   B2 19 0
184 HD 216629B * 22 53 15.0343830192 +62 08 51.630169632   13.26 13.82 11.46   kA3hF0mF3_Kn 12 0
185 HD 216629 Ae* 22 53 15.6041662488 +62 08 45.000921228 9.83 9.93 9.36 9.31   B3IVe+A3 132 0
186 HD 216658 * 22 53 30.7935176256 +62 08 05.720790300 9.3 9.549 8.926 9.04   B3 52 0
187 2MASS J22533602+6236494 Y*O 22 53 36.0419904816 +62 36 49.294868472   13.73 13.21   12.23 ~ 4 0
188 LS III +62 22 Y*O 22 53 38.2406866776 +62 36 57.279915504 11.2 11.08 10.37     B3 12 0
189 V* V454 Cep EB* 22 53 54.0420471360 +62 35 48.372545976 9.34 9.59 9.1     B5 67 0
190 BD+61 2365 Y*O 22 54 18.0388647744 +62 39 55.135306224 9.27 9.59 9.2     B5 33 0
191 NGC 7419 OpC 22 54 19 +60 48.8     13.0     ~ 95 0
192 BD+61 2366 * 22 54 36.3762526032 +62 36 44.873805996 10.18 10.32 9.7     B5 35 0
193 TYC 4282-544-1 * 22 54 40.4863378440 +62 45 02.778962112   11.2 10.6     ~ 6 0
194 GSC 04282-00780 Y*O 22 54 57.3161197344 +62 34 18.027345288   11.177 10.381 10.872   B2.5V 13 0
195 HD 216898 * 22 55 42.4584233736 +62 18 22.821300252 8.10 8.58 8.04     O9V 145 0
196 TYC 4282-563-1 * 22 55 47.7881681472 +62 51 04.219818588   12.93 11.62     ~ 3 0
197 TYC 4282-551-1 * 22 55 49.4061042216 +62 51 13.638730032   11.84 11.55     B5V 6 0
198 HD 217035 bC* 22 56 30.941664 +62 52 06.31128 7.66         B0.5Vn+B0.5V 96 0
199 HD 217061 Be* 22 56 42.5512941096 +62 37 29.565104160 9.22 9.37 8.9     B5 97 0
200 HD 217086 Y*O 22 56 47.1887590800 +62 43 37.657173900 7.88 8.30 7.66 8.35   O7Vnn((f))z 247 0
201 NAME III CEP ASSOC As* 23 04.2 +63 24           ~ 309 0

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2022.07.07-16:17:53

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