1998PASP..110.1172G

Query : 1998PASP..110.1172G

1998PASP..110.1172G - Publ. Astron. Soc. Pac., 110, 1172-1182 (1998/October-0)

The open cluster NGC 7789. I. Radial velocities for giant stars.

GIM M., HESSER J.E., McCLURE R.D. and STETSON P.B.

Abstract (from CDS):

A total of 597 radial velocity observations for 112 stars in the ∼1.6 Gyr old open cluster NGC 7789 have been obtained since 1979 with the radial velocity spectrometer at the Dominion Astrophysical Observatory. The mean cluster radial velocity is -54.9±0.12 km.s–1 and the dispersion is 0.86 km.s–1, from 50 constant velocity stars selected as members from this radial velocity study and the 1981 proper motion study of McNamara & Solomon. Twenty-five stars (32%) among 78 members are possible radial velocity variable stars, but no orbits are determined because of the sparse sampling. Seventeen stars are radial velocity nonmembers, while the membership estimates of six stars are uncertain. There is a hint that the observed velocity dispersion falls off at large radius. This may due to the inclusion of long-period binaries preferentially in the central area of the cluster. The known radial velocity variables also seem to be more concentrated toward the center than members with constant velocity. Although this is significant at only the 85% level, when combined with the similar result of Raboud & Mermilliod for three other clusters, the data strongly support the conclusion that mass segregation is being detected.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 7789 - Stars: Binaries: Spectroscopic - Techniques: Radial Velocities

VizieR on-line data: <Available at CDS (J/PASP/110/1172): table2.dat table3.dat>

Nomenclature: Table 3, col(3): Cl* NGC 7789 G NNNN N=121 among (Nos 10-1334)

CDS comments: Table 3, col(3): Numbering from Gim Thesis, 1998.

Simbad objects: 107

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Number of rows : 107
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 NGC 2362 OpC 07 18 41.9 -24 57 08           ~ 428 0
2 NGC 2477 OpC 07 52 11.4 -38 32 47   6.64 5.8     ~ 314 0
3 NGC 6940 OpC 20 34 28.4 +28 17 07           ~ 215 0
4 NGC 7789 57 * 23 56 15.6444915576 +56 39 28.793871648     14.837   14.027 ~ 7 0
5 NGC 7789 72 RG* 23 56 17.8342066080 +56 40 07.714509600   12.79 11.0536   9.089 ~ 20 0
6 NGC 7789 80 * 23 56 19.2482049432 +56 44 47.955067152   14.39 13.255   11.929 ~ 14 0
7 NGC 7789 136 * 23 56 29.3060208672 +56 45 43.219098936   14.6 13.401   12.105 ~ 6 0
8 NGC 7789 160 SB* 23 56 33.0337096968 +56 44 33.182001744   14.29 13.0343   11.686 ~ 12 0
9 NGC 7789 193 RG* 23 56 38.0698216200 +56 49 40.462407624   14.03 12.6063   11.092 ~ 13 0
10 NGC 7789 200 RG* 23 56 39.2985490488 +56 45 24.202095588     13.161   11.811 ~ 25 0
11 NGC 7789 202 * 23 56 39.5836840944 +56 54 44.256411540   14.49 13.188   11.791 ~ 16 0
12 NGC 7789 212 * 23 56 40.9731034152 +56 41 47.044836204     13.260   11.944 ~ 14 0
13 NGC 7789 232 RG* 23 56 43.0430402280 +56 50 47.685541128   14.41 13.107   11.712 ~ 31 0
14 NGC 7789 244 * 23 56 44.5168872720 +56 42 53.552723796   14.39 13.1599   11.811 ~ 13 0
15 NGC 7789 254 * 23 56 45.7560233640 +56 41 30.364033092     13.239   11.922 ~ 10 0
16 NGC 7789 255 RG* 23 56 45.8660402294 +56 38 40.767471399     12.937   11.504 K0III 22 0
17 NGC 7789 297 RG* 23 56 50.5287592512 +56 49 20.754876360   13.92 12.811 12.46 11.518 ~ 32 0
18 NGC 7789 301 RG* 23 56 52.2278331240 +56 33 38.840428440   13.61 12.2728   10.734 ~ 26 0
19 NGC 7789 304 * 23 56 52.5172127304 +56 43 29.756819784   12.76 11.0646   9.169 ~ 17 0
20 NGC 7789 310 * 23 56 53.1055590216 +56 49 08.168530404   15.66 15.0348     ~ 7 0
21 NGC 7789 319 SB* 23 56 54.6546006552 +56 41 20.078268648     12.864   11.595 ~ 14 0
22 NGC 7789 321 RG* 23 56 54.7365207024 +56 48 16.263428616   14.13 12.9420   11.607 ~ 19 0
23 NGC 7789 327 RG* 23 56 55.2707836392 +56 38 26.890904040     12.42   11.255 ~ 19 0
24 NGC 7789 329 RG* 23 56 55.4629828752 +56 45 08.976525300   13.68 12.3050   10.765 K2III 37 0
25 NGC 7789 338 SB* 23 56 56.4702653424 +56 44 38.273919504   12.93 11.8015   10.515 G8III 27 0
26 NGC 7789 337 * 23 56 56.5487077632 +56 38 09.513493620   13.57 12.289   10.879 ~ 8 0
27 NGC 7789 347 * 23 56 57.1610482032 +56 41 49.555836924   12.982 12.9817   11.638 ~ 11 0
28 NGC 7789 348 * 23 56 57.2694836424 +56 36 55.125447480   14.17 12.981   11.671 ~ 18 0
29 NGC 7789 353 RG* 23 56 57.5153755656 +56 45 27.139175388     12.592   11.075 ~ 50 0
30 NGC 7789 415 SB* 23 57 03.2501165215 +56 45 57.912486452   12.55 10.6648   8.481 M1.0III 44 0
31 NGC 7789 416 * 23 57 03.5671178064 +56 43 20.900650656   14.35 13.1109   11.783 ~ 16 0
32 NGC 7789 444 * 23 57 05.8245915096 +56 44 48.292397736   14.13 12.9226   11.583 ~ 13 0
33 NGC 7789 461 RG* 23 57 07.4408657311 +56 41 41.634837558   12.994 11.375 10.813 9.56 ~ 33 0
34 NGC 7789 466 * 23 57 07.7678740032 +56 40 50.178705384   13.63 12.1934   10.654 ~ 5 0
35 NGC 7789 468 * 23 57 08.0503461336 +56 43 21.602897040   12.75 11.6115   9.722 K4III 46 0
36 NGC 7789 476 RG* 23 57 08.9526221314 +56 48 50.332490009   14.38 13.1774   11.831 ~ 32 0
37 NGC 7789 489 SB* 23 57 10.0569020256 +56 40 56.571370896   12.82 11.3165   9.658 K2II 21 0
38 NGC 7789 491 SB* 23 57 10.1302923687 +56 47 16.634084370   14.144 12.943 12.558 11.553 G9III 20 0
39 NGC 7789 494 RG* 23 57 10.4044757640 +56 42 49.333771908   12.42 10.7373   8.592 K4III 22 0
40 NGC 7789 501 RG* 23 57 11.1348067512 +56 44 29.273305596   12.97 11.26 10.66 9.365 K5III 46 0
41 NGC 7789 526 * 23 57 12.4104031176 +56 50 00.735142704   14.08 12.8517   11.516 ~ 21 0
42 NGC 7789 549 RG* 23 57 14.0025494832 +56 40 58.646633376   13.7 12.2895   10.776 K2III 35 0
43 NGC 7789 555 * 23 57 14.4383868528 +56 39 25.381787256   14.29 13.0712   11.737 ~ 13 0
44 NGC 7789 575 RG* 23 57 16.9215760032 +56 46 19.916182380   13.51 12.1003   10.591 K2III 34 0
45 NGC 7789 593 HB* 23 57 18.4710230592 +56 50 27.006375768   14.3 13.012   11.63 ~ 33 0
46 NGC 7789 601 * 23 57 19.1126486496 +56 35 56.187798396   13.74 12.373   10.906 ~ 14 0
47 NGC 7789 605 * 23 57 19.2105258408 +56 40 51.426837948   14.05 12.8171   11.482 K0III 30 0
48 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0
49 NGC 7789 626 * 23 57 21.0700741056 +56 35 02.880385512     12.962   11.631 G9III 12 0
50 NGC 7789 637 RG* 23 57 22.4314946928 +56 41 45.866291028   13.82 12.397   10.866 K2III 48 0
51 NGC 7789 658 * 23 57 23.9084429856 +56 42 17.677445688   14.28 13.101   11.817 ~ 12 0
52 NGC 7789 661 * 23 57 23.9437660704 +56 45 33.912687744   14 12.839   11.54 ~ 15 0
53 NGC 7789 665 * 23 57 24.1797282264 +56 39 36.132932484     12.913   11.625 G8III 20 0
54 NGC 7789 669 RG* 23 57 24.4766316792 +56 48 30.495586788   13.04 11.4563   9.74 K4III 41 0
55 NGC 7789 676 HB* 23 57 25.0030206310 +56 38 36.273112092   14.07 12.8386   11.555 G8III 26 0
56 NGC 7789 684 * 23 57 25.5243338256 +56 45 56.562859908   14.22 12.9803   11.627 ~ 13 0
57 NGC 7789 692 * 23 57 26.6597151888 +56 42 25.435929528     13.006   11.682 ~ 10 0
58 NGC 7789 707 * 23 57 27.5351233008 +56 45 39.156215436   14.243 13.038 12.627 11.652 ~ 20 0
59 NGC 7789 709 * 23 57 27.8289768216 +56 52 10.632022968     12.445   11.030 ~ 4 0
60 NGC 7789 711 * 23 57 27.9476054808 +56 40 03.781443936     12.625   11.394 ~ 6 0
61 NGC 7789 724 RG* 23 57 28.7152495824 +56 35 22.689066156   14.40 13.1709   11.866 ~ 14 0
62 NGC 7789 732 * 23 57 29.5508446872 +56 42 23.505669468   13.92 12.6944   11.369 ~ 28 0
63 NGC 7789 737 * 23 57 29.9776606244 +56 43 19.905297761   14.53 13.3530   12.078 ~ 23 0
64 NGC 7789 751 AB? 23 57 30.7854423160 +56 50 51.418660322   12.66 10.8783   8.768 M1.0III 26 0
65 NGC 7789 758 * 23 57 31.2529521648 +56 35 16.584761796   11.16 10.4531   9.681 G8V 15 0
66 NGC 7789 765 RG* 23 57 31.8479523192 +56 41 22.053542748   12.80 11.59   10.053 ~ 52 0
67 NGC 7789 778 * 23 57 32.7849344616 +56 40 19.671831624     13.055   11.749 ~ 11 0
68 NGC 7789 814 RG* 23 57 35.6283678264 +56 40 00.017856552     12.957   11.67 ~ 25 0
69 NGC 7789 827 SB* 23 57 37.5758759376 +56 42 18.130456692     12.841   11.524 ~ 10 0
70 NGC 7789 849 SB* 23 57 39.5622914376 +56 42 34.529261508     13.102   11.837 ~ 11 0
71 NGC 7789 859 SB* 23 57 40.5612085128 +56 45 23.107928796   14.02 12.6385   11.132 K2III 37 0
72 NGC 7789 865 SB* 23 57 41.1657614652 +56 44 22.880578257   13.71 12.637   11.402 ~ 9 0
73 NGC 7789 866 * 23 57 41.3446546944 +56 42 07.435192644   14.08 12.8696   11.548 G9III 16 0
74 NGC 7789 875 HB* 23 57 42.7845722928 +56 38 56.654776104   14.17 12.9500   11.642 G9III 26 0
75 NGC 7789 897 HB* 23 57 44.8114795104 +56 45 44.031973356   14.16 12.9220   11.576 G9III 31 0
76 NGC 7789 902 * 23 57 45.8255448000 +56 50 41.368704180     13.164   11.787 ~ 19 0
77 NGC 7789 908 SB* 23 57 46.5026064216 +56 44 25.613050992   14.22 13.0201   11.715 ~ 16 0
78 NGC 7789 957 * 23 57 50.4616302168 +56 39 22.636292796     13.084   11.767 ~ 14 0
79 NGC 7789 970 RG* 23 57 51.5186718432 +56 51 04.067438616     11.890   10.213 K3III 19 0
80 NGC 7789 971 RG* 23 57 51.5681710632 +56 38 56.654717784   12.94 11.0453   8.648 M3III 38 0
81 NGC 7789 977 SB* 23 57 52.0469168496 +56 42 25.571135160   12.973 11.147 10.481 9.126 K3III 14 0
82 NGC 7789 1005 HB* 23 57 54.399120 +56 47 44.00016   13.89 12.82 12.67 11.623 ~ 24 0
83 NGC 7789 1071 RG* 23 58 01.3301334528 +56 39 22.003788816   13.89 12.5566   11.168 ~ 22 0
84 NGC 7789 1082 RG* 23 58 02.7570176064 +56 47 20.936951412     12.933   11.497 ~ 25 0
85 NGC 7789 1091 * 23 58 04.7478617184 +56 46 23.536540272   14.44 13.082   11.599 ~ 18 0
86 NGC 7789 1101 * 23 58 06.0347822904 +56 49 59.891430252     13.054   11.688 ~ 17 0
87 NGC 7789 1107 * 23 58 07.0211607960 +56 40 48.151819128   14.02 12.7945   11.458 ~ 20 0
88 NGC 7789 1114 * 23 58 09.1380950160 +56 39 52.387011756   14.46 13.2414   11.939 ~ 11 0
89 NGC 7789 1149 SB* 23 58 14.8410921672 +56 39 35.468618292   13.11 12.31   10.890 ~ 4 0
90 NGC 7789 1150 SB* 23 58 15.5939275608 +56 49 12.331152768     12.918   11.475 ~ 14 0
91 NGC 7789 1225 * 23 58 29.1551993208 +56 50 14.951538672     12.719   11.31 ~ 3 0
92 NGC 7789 1244 * 23 58 33.3028518336 +56 49 44.309937216     13.013   10.898 ~ 3 0
93 NGC 7789 1312 * 23 58 46.5183136296 +56 49 52.631147100     12.795   11.456 ~ 14 0
94 Cl* NGC 7789 M 748 * ~ ~     11.178   9.069 ~ 1 0
95 Cl* NGC 7789 M 994 * ~ ~     11.500   10.198 ~ 1 0
96 Cl* NGC 7789 M 193 * ~ ~   13.01 11.492   9.74 ~ 2 0
97 Cl* NGC 7789 M 959 * ~ ~     11.660   10.401 ~ 1 0
98 NGC 7789 248 * ~ ~   15.54 14.88     ~ 2 0
99 Cl* NGC 7789 M 125 * ~ ~   13.84 12.597   11.086 ~ 2 0
100 Cl* NGC 7789 M 866 * ~ ~     11.932   10.343 ~ 2 0
101 Cl* NGC 7789 M 1121 * ~ ~     10.744   8.53 ~ 2 0
102 Cl* NGC 7789 M 227 * ~ ~     11.960   10.344 ~ 2 0
103 Cl* NGC 7789 M 108 * ~ ~           ~ 1 0
104 Cl* NGC 7789 M 1244 * ~ ~     13.372   12.554 ~ 1 0
105 Cl* NGC 7789 M 848 * ~ ~     11.484   10.198 ~ 1 0
106 Cl* NGC 7789 M 580 * ~ ~     12.956   11.406 ~ 1 0
107 Cl* NGC 7789 M 215 * ~ ~   13.56 12.188   10.66 ~ 2 0

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