2013A&A...550A..70G

Query : 2013A&A...550A..70G

2013A&A...550A..70G - Astronomy and Astrophysics, volume 550A, 70-70 (2013/2-1)

Baade-Wesselink distances to Galactic and Magellanic Cloud Cepheids and the effect of metallicity.

GROENEWEGEN M.A.T.

Abstract (from CDS):

The metallicity dependence of the Cepheid period-luminosity (PL) relation is of importance in establishing the extragalactic distance scale. The aim of this paper is to investigate the metallicity dependence of the PL relation in V and K, based on a sample of 128 Galactic, 36 Large Magellanic Cloud (LMC), and 6 Small Magellanic Cloud (SMC) Cepheids with individual Baade-Wesselink (BW) distances (some of the stars also have an Hubble Space Telescope (HST) based and Hipparcos parallax or are in clusters) and individually determined metallicities from high-resolution spectroscopy. Literature values of the V-band, K-band, and radial velocity data were collected for the sample of Cepheids. Based on a (V-K) surface-brightness relation and a projection factor, distances were derived from a BW analysis. The p-relation finally adopted is 1.50-0.24logP. The slope of this relation is based on the condition that the distance to the LMC does not depend on period or (V-K) colour and that the slope of the PL relation based on the BW distances agrees with that based on apparent magnitude. The zero point of the relation is tight to the Cepheids with HST and revised Hipparcos parallaxes as well as to Cepheids in clusters. The slope of the Galactic and LMC K-band relation formally agrees within the errors, and combining all Cepheids (including the SMC) results in a negligible metallicity dependence and a relation of MK=(-2.50±0.08)+(-3.06 ±0.06)logP. A similar conclusion is found for the reddening-free Wesenheit relation (W(VK)=K-0.13(V-K)), with MWVK=(-2.68±0.08)+(-3.12±0.06)logP. In the V-band the situation is more complex. The slope of the LMC and the Galactic PL relation differ at the 3σ level. Combining the sample nevertheless results in a metallicity term significant at the 2σ level: MV=(-1.55±0.09)+(-2.33±0.07)logP+(+0.23±0.11)[Fe/H]. Taking only the Galactic Cepheids, the metallicity term is no longer significant, namely (+0.17±0.25). Compared to the recent works by Storm et al. (2011A&A...534A..94S, 2011A&A...534A..95S), there is both agreement and disagreement. A similar dependence of the p-factor on period is found, but the zero point found here implies a shorter distance scale. The distance modulus (DM) to the LMC and SMC found here are 18.29±0.02 and 18.73±0.06 (statistical error on the mean), respectively. Systematic differences in reddening could have an effect of order +0.05 in DM. The details of the comparison of BW-based distances and Cepheids with HST and revised Hipparcos parallaxes also play a role. The method used by Storm et al. would lead to larger DM of 18.37 and 18.81 for the LMC and SMC, respectively. The LMC DM is shorter than the currently accepted value, which is in the range 18.42 to 18.55, and it is speculated that the p-factor may depend on metallicity. This is not predicted by theoretical investigations, but these same investigations do not predict a steep dependence on period either, indicating that additional theoretical work is warranted.

Abstract Copyright: ∼

Journal keyword(s): stars: distances - stars: variables: Cepheids

VizieR on-line data: <Available at CDS (J/A+A/550/A70): table3.dat table45.dat table10.dat tablea1.dat notes.dat>

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 - 2024 		#notes
1 V* FM Cas cC* 00 14 28.2414596520 +56 15 10.575377388   10.15 9.16   7.984 F7.5Ib 120 0
2 V* SY Cas cC* 00 15 09.8128866000 +58 25 27.442084836   10.69 9.92   8.789 F5 129 0
3 V* DL Cas cC* 00 29 58.5888773064 +60 12 43.065292140 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 331 0
4 NGC 129 OpC 00 30 25.7 +60 12 47   7.33 6.5     ~ 203 0
5 SV* HV 1328 cC* 00 32 54.9172871016 -73 49 19.085722104   14.17 14.116   13.431 ~ 33 0
6 SV* HV 1333 cC* 00 36 03.4615743240 -73 55 58.867078620   15.87 14.702   13.820 ~ 25 0
7 SV* HV 1335 cC* 00 36 55.6921565160 -73 56 28.053638520   15.399 14.746   13.983 ~ 33 0
8 SV* HV 1345 cC* 00 40 38.5969623096 -73 13 14.311161660   15.428 14.779   13.957 ~ 25 0
9 SV* HV 822 cC* 00 41 55.4776238040 -73 32 23.608342176   14.39 14.524   13.618 ~ 28 0
10 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11145 1
11 SV* HV 837 cC* 00 55 56.0568870768 -71 59 02.691309588   14.16 13.233   12.297 ~ 63 0
12 V* RW Cas cC* 01 37 14.0194838112 +57 45 33.192977652   9.44 8.58   7.896 G2 157 0
13 V* VX Per cC* 02 07 48.4808945496 +58 26 36.741616512   10.47 9.37   7.927 G2IV 185 0
14 V* SU Cas cC* 02 51 58.7511911208 +68 53 18.606894036 6.92 6.44 5.80     F5.5III+ 424 1
15 Cl Alessi 95 Cl* 02 52 15.1 +68 53 19           ~ 11 0
16 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3434 0
17 V* RW Cam cC* 03 54 21.7663072128 +58 39 11.998608120   10.02 8.72   7.054 F8 174 0
18 V* RX Cam cC* 04 04 58.4626302312 +58 39 35.218829196   8.85 7.70   6.233 G2Ib+A0V 202 0
19 V* BM Per cC* 04 29 39.3890067672 +48 25 19.101057240   11.56 10.06     K5 71 0
20 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
21 V* SZ Tau cC* 04 37 14.7776556504 +18 32 34.926940860 7.65 7.13 6.37     F6.7:Ib 305 0
22 SV* HV 12717 cC* 04 43 20.8471430712 -69 13 47.809980552   15.48 14.733 14.20 13.950 ~ 31 0
23 NGC 1647 OpC 04 45 55.4 +19 04 44   6.82 6.4     ~ 169 0
24 V* AW Per cC* 04 47 46.3149227688 +36 43 22.033952832   8.46 7.51   6.200 F0+B6: 221 0
25 SV* HV 12452 cC* 04 48 51.3419874096 -69 21 22.760929404   15.53 14.755 14.40 13.941 ~ 34 0
26 V* SV Per cC* 04 49 47.9416107648 +42 17 22.981906464   9.74 8.86     F6-G1 152 0
27 SV* HV 873 cC* 04 54 23.7765040872 -70 54 05.735484684   12.97 12.44 12.58 12.178 F8I 53 0
28 SV* HV 877 cC* 04 57 01.7944309968 -67 59 42.589297284   14.10 13.363   12.232 ~ 52 0
29 SV* HV 876 cC* 04 57 12.3631684656 -67 22 57.291144672   14.29 13.666 13.32 12.711 ~ 28 0
30 SV* HV 878 cC* 04 57 51.0483921048 -69 57 29.683493100   13.40 13.623 13.62 12.693 ~ 47 0
31 SV* HV 12505 cC* 04 57 56.7393106608 -68 48 57.612161700   16.99 14.847 14.75 13.808 ~ 22 0
32 SV* HV 879 cC* 04 58 05.5960382376 -69 27 15.480133020   14.72 13.457 13.01 12.299 ~ 61 0
33 HD 268878 cC* 04 58 10.7956592640 -69 56 58.781211396   13.83 13.134 12.96 12.005 K5 75 0
34 SV* HV 881 cC* 04 58 32.8016229936 -70 20 45.716108784   13.26 13.175 12.61 12.156 ~ 43 0
35 V* AN Aur cC* 04 59 41.5376124792 +40 50 09.726015408   11.35 10.21     F6 103 0
36 V* RX Aur cC* 05 01 23.1881833128 +39 57 37.423107252   8.49 7.62   6.594 G0III 210 0
37 SV* HV 2282 cC* 05 01 24.9394462656 -70 04 18.287395644   15.10 14.446 13.95 13.350 ~ 31 0
38 SV* HV 2338 cC* 05 06 08.8555282080 -71 15 26.118906300   12.83 12.26   11.858 ~ 65 0
39 HD 269075 cC* 05 06 47.9715275784 -70 02 13.295472684   13.30 12.944 12.77 11.861 M 70 0
40 SV* HV 899 cC* 05 07 07.8256721256 -68 53 19.448617524   13.50 13.471 12.83 12.403 ~ 56 0
41 SV* HV 909 cC* 05 09 20.1372980832 -70 27 27.043469748   13.32 12.67 12.11 11.949 ~ 66 0
42 V* BK Aur cC* 05 10 40.2293399040 +49 41 15.398520252   10.40 9.42     F8 89 0
43 SV* HV 5655 cC* 05 11 05.4172344768 -70 30 34.412745888   15.46 14.563 14.06 13.578 ~ 32 0
44 SV* HV 914 cC* 05 12 47.0346290592 -69 06 08.881150860     14.926   14.197 ~ 29 0
45 SV* HV 12197 Ce* 05 13 13 -65 30.8   16.741 16.102     ~ 28 0
46 SV* HV 12199 Ce* 05 13 19 -65 29.5   16.916 16.289     ~ 30 0
47 SV* HV 12198 cC* 05 13 26.6692125288 -65 27 04.932684468   16.627 15.970   15.230 ~ 41 0
48 NGC 1866 GlC 05 13 38.920 -65 27 52.75           ~ 421 0
49 SV* HV 12202 Ce* 05 13 39 -65 29.0   16.756 16.080     ~ 28 0
50 SV* HV 12203 Ce* 05 13 40 -65 29.6   16.811 16.140     ~ 29 0
51 SV* HV 2369 cC* 05 13 53.6706712704 -67 03 48.446510436 14.7 12.88 12.21   11.648 F5?I? 69 0
52 SV* HV 12204 cC* 05 13 57.8740222848 -65 28 39.333037188   16.18 15.715   15.076 ~ 33 0
53 SV* HV 2405 cC* 05 14 41.5551364872 -70 42 32.084016804   15.88 15.151 14.70 14.355 ~ 30 0
54 V* YZ Aur cC* 05 15 21.9827588256 +40 04 40.880491572   11.77 10.24     G5 108 0
55 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17428 0
56 SV* HV 2527 cC* 05 25 39.1090655328 -71 06 39.848203476   15.49 14.615 14.16 13.670 ~ 38 0
57 SV* HV 2549 cC* 05 27 00.5741329320 -71 38 35.749371876   14.34 13.796 13.36 12.890 ~ 43 0
58 SV* HV 2538 cC* 05 27 07.7611991376 -68 29 42.907715952   15.32 14.475 14.05 13.468 ~ 23 0
59 SV* HV 12816 cC* 05 29 58.4215444680 -65 54 20.308873644   15.09 14.49 14.13 13.846 ~ 41 0
60 SV* HV 12815 cC* 05 30 02.4652768272 -65 56 01.783841568   14.39 14.04 13.48 12.551 ~ 47 0
61 * bet Dor cC* 05 33 37.5159729864 -62 29 23.376457680 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 377 0
62 SV* HV 1005 cC* 05 36 06.7990326216 -68 49 13.370391588   14.92 14.70 14.12 13.222 ~ 37 0
63 SV* HV 1006 cC* 05 37 22.4442138216 -69 28 59.373425928   15.23 14.398 13.91 13.478 ~ 26 0
64 SV* HV 2827 cC* 05 43 47.3076015504 -66 35 08.943397872   13.37 12.02   11.220 M 60 0
65 V* ST Tau cC* 05 45 03.1603367712 +13 34 34.903715808   9.13 7.79   7.149 G0 132 0
66 SV* HV 1023 cC* 05 46 36.1848254832 -68 11 03.439255668   14.66 14.06 13.52 12.775 ~ 46 0
67 SV* HV 6093 cC* 05 57 46.8445419408 -68 41 04.285724352   15.96 15.304 15.02 14.628 ~ 30 0
68 V* RZ Gem cC* 06 02 36.5871685272 +22 14 02.948725104   10.83 9.91 9.68 8.679 F5 122 0
69 V* SV Mon cC* 06 21 26.3049089544 +06 28 12.578441700   9.32 8.28     G1Ib 174 0
70 V* RS Ori cC* 06 22 13.1926522608 +14 40 41.255838516   9.34 8.42   7.270 F4Ib 150 0
71 V* T Mon cC* 06 25 12.9996760920 +07 05 08.558582892 8.24 7.20 5.98   4.996 G3Iabv+A0p 464 1
72 * 48 Aur cC* 06 28 34.0881845487 +30 29 34.929596860 6.73 6.23 5.55   4.777 F5.5-G0Ib 382 0
73 V* W Gem cC* 06 34 57.4524971712 +15 19 49.696329540 7.79 7.25 6.54   5.908 F5-G1 213 0
74 V* CV Mon cC* 06 37 04.8449178072 +03 03 50.274557532   11.32 9.90   8.631 ~ 240 0
75 Cl VDB 1 OpC 06 37 06.0 +03 04 41           ~ 62 0
76 V* BE Mon cC* 06 40 05.5822060896 +07 36 20.986002036   11.6 10.5     G5 87 0
77 V* TZ Mon cC* 06 58 00.9347733216 -00 22 33.463232040   11.8       F6 95 0
78 * zet Gem cC* 07 04 06.5312384690 +20 34 13.074474962 5.20 4.58 3.79   3.082 G1Ib 569 0
79 V* RY CMa cC* 07 16 37.6357128312 -11 29 14.299158552   8.99 8.19   7.133 F8Ib/II 160 0
80 V* RZ CMa cC* 07 21 32.8571936928 -16 41 13.998801084   10.75 9.72   8.477 F6 98 0
81 V* X Pup cC* 07 32 47.0329137816 -20 54 34.884361152   9.56 8.46   7.143 K0 181 0
82 V* VZ Pup cC* 07 38 35.2380326136 -28 29 58.597431036   11.469 10.154 9.583   F7.5 148 1
83 V* AQ Pup cC* 07 58 22.0887499032 -29 07 48.338631084   9.70 8.54   7.175 F5-G2Ib 198 0
84 V* LS Pup cC* 07 58 59.2197041640 -29 18 28.358867700   11.75 10.59 9.88 8.933 ~ 97 0
85 V* BN Pup cC* 08 06 21.4750343856 -30 05 48.770958372   10.99 9.75 8.97 8.981 G4 125 0
86 V* RS Pup cC* 08 13 04.2157111224 -34 34 42.696447852 8.89 8.51 7.04   5.453 F8Iab 347 0
87 V* V Car cC* 08 28 43.6940477208 -60 07 21.268842960   8.14 7.31   6.432 F8Ib/II 144 0
88 V* RZ Vel cC* 08 37 01.3028699904 -44 06 52.846248456   8.507 7.260     G1Ib 224 0
89 V* T Vel cC* 08 37 40.8266515248 -47 21 43.084440432   8.92 7.68   6.970 G0II 170 0
90 V* SW Vel cC* 08 43 38.6903528472 -47 24 11.200999464   9.58 8.32     F8/G0Ib 184 0
91 V* SX Vel cC* 08 44 53.4685905720 -46 20 34.736412696   9.19 8.33   7.264 F8II 135 0
92 Ass Vel OB 1 As* 08 49.9 -45 00           ~ 100 0
93 Cl Ruprecht 79 OpC 09 41 02.2 -53 50 46           ~ 83 0
94 V* CS Vel cC* 09 41 10.2609376392 -53 48 57.785105952   12.46 11.24   10.078 ~ 112 0
95 * l Car cC* 09 45 14.8117044917 -62 30 28.450312664   5.09 3.75     G5Iab/b 318 0
96 V* RY Vel cC* 10 20 41.0315888064 -55 19 17.028180084   9.71 7.86   6.840 F5Ib/II 148 0
97 V* VY Car cC* 10 44 32.6909254176 -57 33 55.327074480 8.12 7.70 6.87   6.299 F7Iab/b 218 0
98 V* WZ Car cC* 10 55 18.7271183664 -60 56 23.951331672   10.40 9.37     F8 149 0
99 V* U Car cC* 10 57 48.1866744768 -59 43 55.883482140 8.31 7.21 6.11   5.073 G5/8Iab 230 0
100 Ass Car OB 2 As* 11 08 -60.2           ~ 82 0
101 V* UU Mus cC* 11 52 17.7227171832 -65 24 15.063278652   10.5 9.54     F7/G0p 134 0
102 V* S Mus cC* 12 12 47.0199008472 -70 09 06.439196664 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 258 0
103 V* VW Cen cC* 13 33 59.0300715216 -64 03 19.999348524   11.60 10.36   8.785 ~ 125 0
104 V* KN Cen cC* 13 36 36.8950655064 -64 33 29.914949592   11.22 9.86     G8Iab+B6.0V 143 0
105 V* XX Cen cC* 13 40 18.6439597656 -57 36 47.440376532   8.72 7.30   6.747 F7/8II 190 0
106 V* V Cen cC* 14 32 33.0833481288 -56 53 15.774129600 8.44 7.84 6.93   5.798 F5Ib/II 274 0
107 NGC 5662 OpC 14 34 56.2 -56 38 24   6.18 5.5     ~ 122 0
108 V* GH Lup cC* 15 24 38.3402056752 -52 51 13.897364040 10.03 9.05 7.83     G2Iab 98 0
109 V* U Nor cC* 15 42 20.9185773096 -55 18 42.939346104   10.68 9.22     F8Ib/II 146 0
110 Cl Lynga 6 OpC 16 04 52.3 -51 57 36   10.28 9.5     ~ 89 0
111 V* TW Nor cC* 16 04 55.2261513912 -51 57 12.653328096   13.67 11.17     ~ 162 0
112 V* QZ Nor cC* 16 11 20.4664528848 -54 21 14.824796688 10.08 9.53 8.71 8.66   G1Iab 137 0
113 NGC 6067 OpC 16 13 11.8 -54 13 37           ~ 211 0
114 V* V340 Nor cC* 16 13 17.3997630552 -54 14 05.586545400   9.61 8.47 8.83   G2Iab 160 1
115 V* S Nor cC* 16 18 51.8316855000 -57 53 59.256000852 8.15 7.49 6.49   5.427 F8/G0Ib 374 1
116 NGC 6087 OpC 16 18 53.0 -57 54 58           ~ 182 0
117 V* V340 Ara cC* 16 45 19.1125726896 -51 20 33.393735924   11.39 10.03     ~ 83 0
118 V* KQ Sco cC* 16 51 38.5473559392 -45 25 36.101286516 12.37 10.69 9.31     K7 135 0
119 V* BF Oph cC* 17 06 05.4979834752 -26 34 50.029842576 8.00 7.61 6.93   6.377 G0II 217 0
120 V* X Sgr cC* 17 47 33.6239490288 -27 49 50.835778896 5.84 5.34 4.54 6.03 3.661 F7II 333 0
121 V* RY Sco cC* 17 50 52.3447976064 -33 42 20.412288432 9.77 8.79 7.51   6.256 F6Ib 188 0
122 V* Y Oph cC* 17 52 38.7019050072 -06 08 36.874071816 8.62 7.61 6.21     G3Ia 364 0
123 V* AV Sgr cC* 18 04 48.7861680960 -22 43 56.639297172   13.39 11.49   10.595 ~ 67 0
124 * gam01 Sgr cC* 18 05 01.2264355704 -29 34 48.322222356 5.99 5.47 4.69   3.869 G0Ib/II 348 0
125 V* CR Ser cC* 18 10 02.1322504368 -13 32 45.471161400   12.90 10.84     G5 73 0
126 V* VY Sgr cC* 18 12 04.5659242512 -20 42 14.462412336   12.70 11.36     F6 74 0
127 Cl Turner 2 OpC 18 16 51 -19 01.8           ~ 21 0
128 V* WZ Sgr cC* 18 16 59.7160721616 -19 04 32.989734840   9.10 7.45     F7(III) 252 0
129 V* Y Sgr cC* 18 21 22.9862401944 -18 51 36.006450458 7.31 6.69 5.75   4.810 F8II 289 0
130 V* XX Sgr cC* 18 24 44.5009232352 -16 47 49.818126264   10.51 9.65 9.38   F7/8II 124 0
131 V* X Sct cC* 18 31 19.7479450320 -13 06 29.430057204   11.169 10.009 9.99 8.622 G5III 101 0
132 V* UZ Sct cC* 18 31 22.3668789696 -12 55 43.335648156   13.23 10.91   9.195 G0 87 0
133 IC 4725 OpC 18 31 44.9 -19 06 50           ~ 222 0
134 V* U Sgr cC* 18 31 53.3323107600 -19 07 30.261459540 8.50 7.81 6.68   5.413 G1Ib 467 0
135 V* EV Sct cC* 18 36 39.6017483712 -08 11 05.361288684   10.99 9.90     F8Ib 250 0
136 V* Y Sct cC* 18 38 03.3064182864 -08 22 08.163746040   11.2 9.69     F7 130 0
137 V* CK Sct cC* 18 41 00.6633099216 -06 05 50.009057124   12.59 10.72     G 77 0
138 V* RU Sct cC* 18 41 56.3818572048 -04 06 38.376404820   10.17 8.82     G5 201 0
139 V* TY Sct cC* 18 42 07.9137911472 -04 17 36.534635808   13.07 11.00   8.829 F8 99 0
140 Cl Trumpler 35 OpC 18 42 57.8 -04 12 54   10.44 9.2     ~ 75 0
141 V* SS Sct cC* 18 43 43.5111680040 -07 43 51.957172704   9.29 7.90   7.100 F8II 176 0
142 V* V350 Sgr cC* 18 45 17.4968424336 -20 38 50.552766852   8.321 7.450 8.41 6.421 F8Ib/II 217 0
143 V* YZ Sgr cC* 18 49 28.5890872992 -16 43 22.896000948 8.49 7.91 7.02   6.207 G2Ib 169 0
144 V* BB Sgr cC* 18 50 59.8729954248 -20 17 42.829838520 8.07 7.53 6.69   5.824 G0Ib 255 0
145 Cl Collinder 394 OpC 18 52 22.1 -20 13 44     6.3     ~ 81 0
146 V* FF Aql cC* 18 58 14.7483041520 +17 21 39.297557628 6.61 6.18 5.38     F6Ib 364 0
147 V* SZ Aql cC* 19 04 39.4158230832 +01 18 22.158826524   9.92 7.92   7.039 F8/G0Ib 193 0
148 V* TT Aql cC* 19 08 13.7497129848 +01 17 55.147982640 8.96 7.86 6.50   5.699 G0/2Ib 281 0
149 V* V496 Aql cC* 19 08 20.7707435688 -07 26 15.879957540   8.88 7.79     F8/G0Iab/b 183 0
150 V* FM Aql cC* 19 09 15.9900952128 +10 33 08.961371208 9.76 9.05 7.89   6.725 F2I 188 0
151 V* V916 Aql cC* 19 10 00.4156127256 +12 32 11.608198908   12.22 10.86   8.908 ~ 55 1
152 V* FN Aql cC* 19 12 47.3148920688 +03 33 26.703677448   9.58 7.96     F8/G0Iab/b 185 0
153 V* V600 Aql cC* 19 21 02.3457719928 +08 30 58.805711244   11.45 10.09   8.204 F8v 101 0
154 V* U Aql cC* 19 29 21.3614645376 -07 02 38.662110240 8.41 7.71 6.61   5.270 F5I/II+B9.8V 283 0
155 V* GY Sge cC* 19 35 13.6269237552 +19 12 08.669232720 13.62 12.116 9.886 9.633   ~ 114 0
156 V* U Vul cC* 19 36 37.7293294920 +20 19 58.576725768   8.368 7.162   5.556 F8Iab 230 0
157 Cl Turner 9 OpC 19 44 39.6 +29 29 38           ~ 37 0
158 V* SU Cyg cC* 19 44 48.7341456312 +29 15 52.895535048 7.10 6.88 6.44 6.06 5.84 F2Iab:+B8.0V 299 0
159 V* S Vul cC* 19 48 23.8063718736 +27 17 11.428754460   11.392 9.551 8.775   K0 193 0
160 NAME S Vul Cluster OpC 19 48 27 +27 17.7           ~ 14 0
161 V* SV Vul cC* 19 51 30.9059845128 +27 27 36.837672012 8.65 9.00 6.74   5.703 F8Ia 433 0
162 V* V1162 Aql cC* 19 52 20.9909317368 -11 22 00.754130100   8.73 7.81     G2Ib 91 0
163 * eta Aql cC* 19 52 28.3689223781 +01 00 20.371980515 5.12 4.61 3.80   3.030 F6Iab+B9.8V 672 0
164 * 10 Sge cC* 19 56 01.2628947456 +16 38 05.262056412 6.45 6.03 5.36 6.81 4.789 F7Ib 349 0
165 V* X Vul cC* 19 57 28.6054979616 +26 33 23.284943352   10.16 8.87   7.147 F8Ia 174 0
166 V* GH Cyg cC* 19 59 10.7971620912 +29 27 02.684677680   11.21 9.94   8.445 F5 84 0
167 V* CD Cyg cC* 20 04 26.5612467720 +34 06 44.187399612   9.35 8.35     F8-G5Iab-Ib 206 0
168 V* V402 Cyg cC* 20 09 07.7596272456 +37 09 07.088017032   10.9 9.87   8.674 G0III 100 0
169 V* MW Cyg cC* 20 12 22.8295152168 +32 52 17.841761616   10.71 9.45   7.882 F8.5-G2Ib 119 0
170 V* V495 Cyg cC* 20 15 58.3269459744 +35 00 53.006262336   12.01 10.75     ~ 51 0
171 V* SZ Cyg cC* 20 32 54.2938782720 +46 36 04.584933612   10.80 9.37   7.770 F7.5/8-G6.5Ib 156 0
172 V* X Cyg cC* 20 43 24.1917118680 +35 35 16.077149700 8.69 7.70 6.47   5.241 F7Ib 469 0
173 Cl Ruprecht 175 OpC 20 45 04 +35 30.2           ~ 16 0
174 V* BZ Cyg cC* 20 45 59.7975767304 +45 18 25.049517228   11.8 10.2   8.331 F7Ib-G4Ib: 101 0
175 V* T Vul cC* 20 51 28.2383768376 +28 15 01.819622952 6.89 6.49 5.77   5.061 F5Ib+A0.8V 342 0
176 V* VX Cyg cC* 20 57 20.8299053760 +40 10 39.010237860   11.6 10.08   8.187 F5e-G2I-II 134 1
177 V* VY Cyg cC* 21 04 16.6363625496 +39 58 20.106736608 11.74 10.66 9.56   8.090 F5.5-G0.5Ib 140 0
178 V* DT Cyg cC* 21 06 30.2442031296 +31 11 04.762896468 6.70 6.38 5.82     F7II- 312 0
179 V* V459 Cyg cC* 21 10 54.3730781040 +49 08 31.400535876   11.76 10.54   8.845 F8 84 0
180 V* V386 Cyg cC* 21 14 40.4340798432 +41 42 58.846926780   11.12 9.75   7.750 F5.5-G0Ib 129 1
181 Cl* NGC 7089 SAW V1 cC* 21 33 28.4576666976 -00 47 55.427066520     13.2     G0 23 0
182 V* V538 Cyg cC* 21 37 28.1282362296 +51 45 44.947238508   11.65 10.50     ~ 57 0
183 V* VZ Cyg cC* 21 51 41.4416202624 +43 08 02.542086024   10.02 8.60   7.948 G0 170 0
184 V* CP Cep cC* 21 57 52.6912593888 +56 09 50.041033668   12.29 10.58   8.788 F5Ib 111 0
185 V* BG Lac cC* 22 00 25.1466021504 +43 26 43.331629776   9.33 8.59   7.793 G0.7 152 0
186 V* Y Lac cC* 22 09 02.9002579560 +51 02 45.084186096   9.79 9.13   8.292 F8 175 0
187 V* AK Cep cC* 22 28 50.0878674336 +58 12 39.400088184   12.53 13.17   9.656 F8 88 0
188 * del Cep cC* 22 29 10.2626640314 +58 24 54.697613650 4.71 4.35 3.75   3.219 F5Iab:+B7-8 730 0
189 Ass Cep OB 6 As* 22 30 +58.0           ~ 43 0
190 V* Z Lac cC* 22 40 52.1457028632 +56 49 46.083774432   9.71 8.57   7.164 F6Ib 228 0
191 V* RR Lac cC* 22 41 26.5260757056 +56 25 58.031784048   9.68 8.87   7.786 K0 174 0
192 V* CR Cep cC* 22 46 24.7705138656 +59 26 31.922840292   10.94 9.64   7.931 G0 97 0
193 V* X Lac cC* 22 49 03.1807630560 +56 25 41.530963044   9.21 8.42     G5 171 0
194 V* SW Cas cC* 23 07 10.0825764168 +58 33 15.130371528   10.73 9.74   8.397 K0 122 0
195 V* RS Cas cC* 23 37 16.0608732192 +62 25 44.372375688   11.4 10.06   8.233 F7-G1Ib 113 0
196 V* RY Cas cC* 23 52 07.0321954200 +58 44 30.208138620   11.32 9.95   8.411 F9Ib 120 0
197 V* DD Cas cC* 23 57 34.9602200184 +62 43 05.686391208   10.95 9.84   8.516 F7 127 0
198 V* CF Cas cC* 23 58 17.9760671064 +61 13 15.821693832   12.72 10.80   9.700 F8Ibv 245 0
199 NGC 7790 OpC 23 58 27.1 +61 12 36   9.18 8.5     ~ 272 0
200 Cl* NGC 1866 WE 2 Ce* ~ ~           ~ 11 0
201 Ass Vel OB 5 As* ~ ~           ~ 8 0

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