1998A&A...329..101R

Query : 1998A&A...329..101R

1998A&A...329..101R - Astronomy and Astrophysics, volume 329101-114 (1998/1-1)

Investigation of the Pleiades cluster. IV. The radial structure.

RABOUD D. and MERMILLIOD J.-C.

Abstract (from CDS):

On the basis of the best available member list and duplicity information, we have studied the radial distribution of 270 stars and multiple systems earlier than K0 in the Pleiades. Five new long period spectroscopic binaries have been identified from the CORAVEL observations. We have found a clear mass segregation between binaries and single stars, which is explained by the greater average mass of the multiple systems. The mass function of the single stars and primaries appears to be significantly different. While the central part of the cluster is spherical, the outer part is clearly elliptical, with an ellipticity of 0.17. The various parameters describing the Pleiades are (for a distance of 125pc): core radius rc=0.6deg (1.4pc), tidal radius rt=7.4deg (16pc), half mass radius rm/2=0.88deg (1.9pc), harmonic radius <r≥1.82deg (4pc). Low-mass stars (later than K0) probably extend further out and new proper motion and radial velocity surveys over a larger area and to fainter magnitudes would be very important to improve the description of the cluster structure and complete mass function.

Abstract Copyright: ∼

Journal keyword(s): clusters: open: individual: Pleiades - binaries: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/329/101): table3>

Simbad objects: 101

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Number of rows : 101
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 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
2 HD 23061 * 03 42 55.1141189191 +24 29 35.049617418 9.96 9.90 9.46 9.01 8.90 F5V 114 0
3 V* V810 Tau BY* 03 43 02.9441671032 +24 40 11.149283892 15.149 12.97 12.03   10.98 G8 105 0
4 Cl Melotte 22 102 Er* 03 43 24.5389577065 +23 13 33.337058447 11.39 11.2 10.7 9.90 9.68 G1V 63 0
5 Cl Melotte 22 120 Y*O 03 43 31.9532712265 +23 40 26.598684947 11.949 11.496 10.855 10.717   G1 91 0
6 2MASS J03433440+2345429 Y*O 03 43 34.4113941165 +23 45 42.922748924 12.914 12.35 11.47     G8V 70 0
7 V* V963 Tau BY* 03 43 37.7294586035 +23 32 09.560933897 11.82 11.4 10.6     G5V 95 0
8 HD 23158 SB* 03 43 42.8773509420 +23 35 41.208537362   10.04 9.58     F5V 88 0
9 Cl Melotte 22 186 * 03 43 47.5129583016 +23 12 41.646939444   11.4 10.5     ~ 24 0
10 Cl Melotte 22 173 Y*O 03 43 48.4127620965 +25 11 24.246493946   12.2 10.7     K0V 76 0
11 Cl Melotte 22 193 Er* 03 43 50.7027203376 +24 14 50.970564132 12.46 12.10 11.29     G3 83 0
12 HD 23195 SB* 03 43 58.8034552580 +23 52 57.813467374   10.19 9.55     F5V 108 0
13 Cl Melotte 22 248 Y*O 03 44 00.5947579976 +23 32 38.194384321   12.0 11.2     G4V 91 0
14 V* V1272 Tau BY* 03 44 03.5401148521 +24 30 15.284314309   11.8 10.762   9.933 G1V 111 0
15 Cl Melotte 22 250 Y*O 03 44 04.2464661604 +24 59 23.415055928   11.4 10.7     G2 74 0
16 V* V1168 Tau BY* 03 44 04.8395264080 +24 16 31.874754111   12.42 11.54     G4 108 0
17 V* V966 Tau BY* 03 44 11.2145003449 +23 22 45.575870257   12.30 11.46     G8e 140 0
18 BD+23 501A TT? 03 44 13.0605044640 +24 01 50.951286804   11.92 11.12 11.25   ~ 82 0
19 V* V1169 Tau BY* 03 44 13.9194344229 +24 46 45.826637312   11.50 10.80     G0 112 0
20 BD+23 502 Er* 03 44 14.655048 +24 06 06.77520   11.41 10.59 10.13   G3IV 62 0
21 V* V1038 Tau BY* 03 44 20.0898026175 +24 47 46.205031064   11.2 10.4 10.3   G1-2V 162 0
22 V* V1084 Tau RS* 03 44 20.5097544453 +24 46 22.305261833   11.92 11.04 10.7   G5V 92 0
23 HD 23247 PM* 03 44 23.5411594200 +24 07 57.471196908   9.564 9.111 9.23   F2V 95 0
24 V* V1170 Tau BY* 03 44 26.2759113581 +24 35 22.939007310 14.435 12.288 11.461   10.520 G9 113 0
25 HD 23269 Er* 03 44 40.7575766283 +24 49 06.729381349   10.4 10.0     F8V 133 0
26 2MASS J03444398+2413523 Y*O 03 44 43.9834004370 +24 13 52.355069334   12.25 11.40 11.31   G8V 76 0
27 HD 23289 * 03 44 51.2354703456 +23 16 08.116761576   9.33 9.01   8.37 F3V 135 0
28 2MASS J03445383+2355165 Y*O 03 44 53.8394313804 +23 55 16.634498368   11.61 10.81   9.87 GIV 88 0
29 2MASS J03445639+2425574 Y*O 03 44 56.3956556693 +24 25 57.395257211   11.01 10.38   9.69 F8 108 0
30 2MASS J03450326+2350219 Y*O 03 45 03.2767265409 +23 50 21.885896079   12.87 11.93   10.97 K2V 108 0
31 2MASS J03450400+2515282 Y*O 03 45 04.0131579092 +25 15 28.255253589   11.4 10.7   9.97 ~ 86 0
32 HD 23326 PM* 03 45 05.2834818672 +23 42 09.619748244 9.632 9.34 8.99   8.49 F3V 128 0
33 2MASS J03451534+2517221 Y*O 03 45 15.3524954712 +25 17 22.129906236   11.8 11.3   10.35 G8V 70 0
34 HD 23352 * 03 45 24.1269375603 +24 53 09.534285718   10.3 9.8   9.05 F5V 104 0
35 Cl Melotte 22 659 Y*O 03 45 25.9720109496 +23 25 48.655887420 13.949 13.214 12.231   11.043 G4V 55 0
36 BD+23 514 Y*O 03 45 41.8552074456 +24 25 53.455915128   12.08 11.36 11.15 10.42 G5 85 0
37 V* V969 Tau BY* 03 45 42.1185203606 +24 54 21.622880032   10.18 9.56   8.82 G3 145 1
38 Cl Melotte 22 761 Y*O 03 45 44.4132583283 +24 13 13.134939048   11.22 10.55   9.77 G2V 93 0
39 V* V813 Tau BY* 03 46 06.5022556056 +24 34 02.743919580   13.82 12.76 12.66 11.59 G5 101 0
40 Cl Melotte 22 885 Y*O 03 46 07.775880 +24 52 00.72624   13.15 12.17 11.86 10.87 K3 66 0
41 BD+22 548 Y*O 03 46 10.0423522944 +23 20 24.045862524   10.8 10.18   9.46 G0 91 0
42 2MASS J03461174+2437203 Y*O 03 46 11.7541432886 +24 37 20.343875204   12.489 11.620     G8V 94 0
43 BD+23 521 * 03 46 17.9919005844 +23 29 11.939258173 11.984 11.4 10.6   9.59 F8V 71 0
44 V* V1045 Tau BY* 03 46 22.6697529823 +24 34 12.539066238   11.4 10.8   9.71 F8 116 0
45 HD 282952 Y*O 03 46 27.3523093248 +25 08 07.920713904   11.3 10.9     F9 91 0
46 V* V1171 Tau BY* 03 46 28.4126681681 +24 26 02.158117224   11.85 11.10 10.5 10.26 G5V 108 1
47 HD 282975 Y*O 03 46 37.6798897555 +23 47 15.790663787 11.533 10.8 10.0   9.43 G2V+G2V 112 0
48 2MASS J03463777+2444517 Y*O 03 46 37.7719499679 +24 44 51.681848077   12.80 11.92   10.89 K0V 88 0
49 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
50 HD 23514 * 03 46 38.3922026460 +22 55 11.199934340 9.95 9.93 9.43 8.96 8.84 F5V 157 0
51 HD 282954 Em* 03 46 38.7739870144 +24 57 34.724064803   10.9 10.27   9.55 F9.5V 120 0
52 HD 23511 PM* 03 46 39.3335012425 +24 06 11.531508492   9.75 9.28   8.75 F5V 144 0
53 V* V814 Tau BY* 03 46 39.3864483531 +24 01 46.867039992   13.04 12.13   11.24 K3V 122 0
54 HD 23513 PM* 03 46 39.9969863424 +23 06 37.194884441 9.85 9.91 9.40 8.97 8.83 F5V 115 0
55 BD+22 552 Y*O 03 46 47.0620046173 +22 54 52.487006394   11.3 10.8   9.77 F8 98 0
56 BD+22 553 * 03 46 50.5364463984 +23 14 21.046709616   10.48 9.97   9.27 F6V 88 0
57 2MASS J03465326+2252513 Y*O 03 46 53.2623075792 +22 52 51.359825208   12.62 11.74     G8V 60 0
58 BD+23 527 Er* 03 46 53.7464379963 +23 35 00.796614675 11.607 11.1 10.6   9.85 G0V 119 0
59 V* V1046 Tau PM* 03 46 54.9177933516 +24 47 46.825737223   11.5 10.6   9.79 G5 106 0
60 Cl Melotte 22 1275 Y*O 03 47 01.4202225461 +23 29 41.789599511 13.035 12.330 11.572 11.297 10.58 K0V 105 0
61 2MASS J03470678+2342546 Y*O 03 47 06.7798576255 +23 42 54.539225274 14.346 13.20 12.18   11.25 K3V 98 0
62 V* V815 Tau BY* 03 47 13.5327654004 +23 42 51.437976573   13.45 12.41   11.43 K4V 112 0
63 HD 23608 SB* 03 47 16.5764110218 +24 07 41.906506002   9.15 8.72   8.09 F3V 92 0
64 HD 23631B SB* 03 47 23.9599460731 +23 54 52.116896628   9.69 9.10     G5V 33 0
65 HD 282967 Y*O 03 47 40.4453488845 +24 21 52.409176663   11.12 10.48   9.79 G5 113 0
66 2MASS J03474811+2313053 Y*O 03 47 48.1174675991 +23 13 05.115153695   11.9 11.2   10.33 G7V 100 0
67 HD 282973 PM* 03 47 52.5260476469 +23 56 28.428947463   10.41 9.87   9.24 G0 120 0
68 HD 23713 ** 03 48 07.1684166120 +24 08 31.430682996   9.86 9.43 9.32 8.64 F7V 111 0
69 HD 23732 * 03 48 16.8727819416 +25 12 54.442464768 9.67 9.62 9.21 8.70 8.55 F4V 106 0
70 2MASS J03481705+2337435 * 03 48 17.0465936208 +23 37 43.573249956           F9V 24 0
71 HD 282972 Y*O 03 48 17.1159771902 +23 53 25.269864637   11.02 12.08   9.72 F9 100 0
72 HD 282958 Y*O 03 48 17.6915716635 +25 02 52.259199818   11.6 11.3   10.15 G5V 109 0
73 HD 282971 PM* 03 48 26.1648308529 +24 02 54.196833236   10.6 10.2   9.39 F8 126 0
74 2MASS J03483451+2326053 Y*O 03 48 34.5103551864 +23 26 05.248800743   11.2 10.7   9.66 G0V 103 0
75 Cl Melotte 22 2027 Y*O 03 48 48.9539567589 +24 16 02.586202857   11.77 10.91   10.01 G2V 85 0
76 Cl Melotte 22 2106 Y*O 03 48 58.4864992200 +23 12 04.243870368   12.39 11.53   10.59 K0V 61 0
77 Cl Melotte 22 2126 Y*O 03 49 02.3336482213 +23 15 08.771656641   12.50 11.64   10.80 K0V 88 0
78 V* V1282 Tau RS* 03 49 06.1083396732 +23 46 52.469922436   11.63 10.803 9.8 9.831 G7IV 110 0
79 HD 282965 SB* 03 49 11.7330709952 +24 38 11.688977570 11.15 11.2 10.6 9.88 9.74 F9V 85 0
80 V* V1089 Tau BY* 03 49 24.0523828704 +23 50 21.300884088   12.13 11.35     ~ 66 0
81 HD 282960 ** 03 49 25.704576 +24 56 15.44820   11.743 10.887 10.639 10.00 G2 56 0
82 Cl Melotte 22 2311 Y*O 03 49 28.7425971397 +23 42 43.885888515   12.19 11.36   10.50 ~ 92 0
83 V* V1090 Tau BY* 03 49 33.1190204321 +23 47 43.404601495   11.58 10.87   10.19 G4V 95 0
84 Cl Melotte 22 2366 Y*O 03 49 36.5439342094 +24 17 45.829531885   12.35 11.53 10.88 10.63 G2 76 0
85 Cl Melotte 22 2406 Y*O 03 49 39.4016007216 +23 17 24.383128632   11.86 11.10     G1 73 0
86 V* V1283 Tau SB* 03 49 42.2769758102 +24 27 46.827406169   13.162 12.201 11.974 11.17 G9 94 0
87 Cl Melotte 22 2462 Y*O 03 49 50.3589700206 +23 42 20.103084756   12.45 11.61 11.44 10.63 ~ 107 0
88 BD+22 574 * 03 49 56.4960771432 +23 13 07.044335076   10.79 10.2   9.58 F8 98 1
89 HD 23964C SB* 03 49 57.4472485560 +23 50 49.472030616   10.95 10.54 9.71   kA1hF5mF5 36 0
90 Cl Melotte 22 2644 Y*O 03 50 20.9059818720 +24 28 00.290041788   11.76 11.03   10.32 ~ 78 0
91 Cl Melotte 22 2665 Y*O 03 50 21.3045676424 +23 05 46.866252770   12.19 11.36     ~ 64 0
92 V* V1175 Tau BY* 03 50 40.0721202291 +23 55 58.950949335   10.9 10.5   9.61 F9 110 0
93 V* V1176 Tau Er* 03 50 54.3588780269 +23 50 05.237700840   12.43 11.48 10.99 10.47 K2 77 0
94 Cl Melotte 22 2880 Y*O 03 50 55.0845587305 +24 11 50.781812049   12.61 11.75     ~ 66 0
95 V* V1054 Tau Y*O 03 51 39.2751951048 +24 32 56.043000960   13.15 12.15 12.30 11.06 ~ 60 1
96 Cl Melotte 22 3097 Y*O 03 51 40.4461647864 +24 58 59.408642388   11.71 10.97   10.12 ~ 74 0
97 HD 24194 PM* 03 51 56.8624256040 +23 54 07.044904908   10.61 10.07   9.38 G0V 97 0
98 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
99 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
100 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
101 NGC 6705 OpC 18 51 03.7 -06 16 18   6.32 5.8     ~ 442 0

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