2008A&A...488..409M


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.05CEST00:34:05

2008A&A...488..409M - Astronomy and Astrophysics, volume 488, 409-416 (2008/9-2)

Membership and binarity of solar-type dwarfs in the nearby open cluster Alpha Persei (Mel 20).

MERMILLIOD J.-C., QUELOZ D. and MAYOR M.

Abstract (from CDS):

The Alpha Persei open cluster (Melotte 20) is one of the nearby clusters (d<500pc) for which a long-term systematic radial-velocity monitoring of the solar-type stars has not been published so far. We undertook an observing program in 1982 to study the membership, duplicity, and rotation of the main-sequence stars and to compare the results with those of the other nearby clusters. Radial-velocity observations of 60 solar-type stars in Mel 20 were obtained with CORAVEL, and of 44 fainter stars with ELODIE spectrographs, in the magnitude range 9.5<V<13.85 The membership of 37 stars from the list compiled by Heckmann is confirmed according to their proper motions, radial velocities, and photometry. We discovered twelve spectroscopic binaries (3 double-lined, 8 single-lined, 1 suspected) among the members and determined an orbit for the double-lined binary He 848. The observed frequency of spectroscopic binaries is therefore 32% (12/37). Four stars are photometric binaries. In addition, the membership of 33 stars with AP numbers is supported by the present radial velocities. Two single-lined and three double-lined binaries were detected in this sample. The cluster mean radial velocity is -1.39±0.17km/s based on 18 stars within 2σ. We found a systematic difference of 3.67±1.48km/s between observed- and astrometric radial velocities. The Alpha Persei cluster members define a tight main sequence in the colour-magnitude diagrams. The remaining scatter observed in the colour-magnitude diagrams and in radial velocities may be due to the difficulty of separating the core Alpha Persei stars from the extended comoving stream.

Abstract Copyright:

Journal keyword(s): stars: binary: spectroscopic - Galaxy: open cluster and associations: individual: Alpha Persei (Melotte 20) - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/488/409): table3.dat>

Status at CDS:  

Simbad objects: 111

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Number of rows : 111

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 BD+48 851 * 03 07 50.4348196230 +49 06 29.802154965   10.60 10.09     F6V 23 0
2 BD+49 855 * 03 08 01.1507746791 +50 33 32.953449756 11.69 11.4 10.7     F8IV-V 9 0
3 HIP 14629 * 03 08 56.5971835619 +47 20 46.840003980   11.58 10.74     G0V 17 0
4 BD+49 868 * 03 11 49.9908260951 +50 22 46.757351935   10.17 9.69     F5V 47 0
5 BD+49 870 SB* 03 12 03.0301142681 +50 23 31.099345894   11.2 10.7     F8IV-V 17 0
6 Cl Melotte 20 174 * 03 13 07.5067804003 +49 34 03.033223336   12.30 11.52     G 10 0
7 Cl Melotte 20 201 * 03 13 57.9961342939 +47 19 28.795303136   10.46 9.88     F8V 8 0
8 BD+48 871 * 03 15 23.5635601587 +49 26 25.007121650   10.56 10.04     F7V 32 0
9 Cl Melotte 20 271 * 03 15 42.2414005842 +47 41 01.273229194   11.26 10.82     F7 6 0
10 BD+47 791 * 03 15 46.6498158596 +47 55 04.993957564   10.57 10.02     F8V 6 0
11 Cl Melotte 20 299 * 03 15 58.8930871953 +50 24 18.685010308   11.94 11.17     F7 13 0
12 Cl Melotte 20 290 * 03 16 04.0772984895 +48 10 34.352988456   11.58 11.06     F9V 10 0
13 BD+49 889 * 03 16 23.1605869608 +49 37 33.340470810   10.46 10.09     F5V 25 0
14 BD+49 892 * 03 16 59.4521201412 +49 55 35.776713106   11.0 10.4     F7V 25 0
15 BD+48 876 * 03 17 20.3452469972 +49 30 07.448981774   10.45 9.92     F7V 11 0
16 Cl Melotte 20 340 * 03 17 24.0315189631 +49 21 14.322718975   12.11 11.81     G0 9 0
17 Cl Melotte 20 350 ** 03 17 36.9405473883 +48 50 08.504554446   11.87 11.20 10.99   ~ 35 1
18 Cl Melotte 20 347 * 03 17 37.4365978973 +48 06 28.922530649   11.13 10.51     G0V 9 0
19 Cl* Melotte 20 AP 121 * 03 17 42.0967924171 +49 01 46.573466486     12.68     G5 10 0
20 BD+49 896 * 03 18 01.7459437170 +49 38 38.830884715   10.11 9.68     F4V 34 0
21 Cl* Melotte 20 AP 89 * 03 18 29.2400702174 +50 27 31.433532476   13.16 12.31   11.57 G6 5 0
22 Cl Melotte 20 389 * 03 18 50.3121225336 +49 43 52.152873701   11.71 11.08     G0 27 0
23 BD+49 903 * 03 19 28.159 +50 24 50.56   11.70 10.88     F6 9 0
24 BD+48 887 * 03 20 03.0859393729 +49 23 14.872220985   10.57 10.00     F6IV 8 0
25 TYC 3315-1833-1 SB* 03 20 24.9647416012 +47 56 28.203171444   11.9 11.2   10.45 G3 10 0
26 TYC 3315-1781-1 SB* 03 20 39.2794403649 +47 29 21.832370868   11.13 10.40     F8V 17 0
27 Cl* Melotte 20 AP 97 * 03 20 41.8725806259 +48 24 37.540568528   12.95 12.08   11.33 G6.5 19 0
28 Cl Melotte 20 457 SB* 03 20 49.2909233018 +49 19 25.834686003   12.01 11.55     ~ 12 0
29 BD+49 905 SB* 03 21 02.0445139524 +49 44 18.097902078   12.28 11.40     ~ 12 0
30 V* V625 Per BY* 03 21 06.5121116968 +48 26 12.706860305   13.80 12.80   11.94 G9 17 0
31 Cl* Melotte 20 AP 102 * 03 21 20.2133396863 +48 45 27.025701687   12.76 11.96   11.27 ~ 14 0
32 V* V626 Per BY* 03 21 22.1834260092 +49 57 03.359094641   14.10       K6 15 0
33 BD+48 892 * 03 21 40.2205897866 +49 07 12.824596897   9.92 9.60     F3IV-V 49 0
34 Cl* Melotte 20 AP 104 * 03 22 04.8 +48 49 36   12.84 12.06     G3.5 6 0
35 BD+48 895 * 03 22 16.9348337576 +49 19 57.131464115   10.67 10.15     F5V 6 0
36 Cl* Melotte 20 AP 106 * 03 22 40.9072897128 +49 40 41.341418870   13.91 12.88   12.06 ~ 11 0
37 TYC 3320-1156-1 * 03 22 51.9328626589 +50 16 16.772145406 12.68 12.40 11.69   11.04 A7 5 0
38 Cl Melotte 20 551 * 03 23 06.5146861574 +50 44 07.475066235   11.85 11.20     F8 6 0
39 BD+46 739 * 03 23 31.4052015089 +46 52 10.207370260   9.91 9.41     F0 8 0
40 Cl Melotte 20 600 * 03 24 15.1308045887 +49 12 30.042776219 12.85 12.58 11.90   11.29 ~ 12 0
41 Cl Melotte 20 601 * 03 24 17.0663164479 +49 39 00.289721827   12.16 11.43     G6 28 0
42 * alf Per V* 03 24 19.3700924 +49 51 40.245455 2.64 2.27 1.79     F5Ib 796 2
43 Cl* Melotte 20 AP 14 * 03 24 19.9236694393 +48 47 19.834522647   12.77 11.94     G4 17 0
44 TYC 3320-1372-1 SB* 03 24 36.7522188926 +50 00 13.906526135   11.88 11.29   10.19 G3 6 0
45 BD+47 816 * 03 24 47.0909695305 +48 24 41.988336879   10.40 9.94     F4V 37 0
46 Cl* Melotte 20 AP 110 * 03 24 54.5 +49 25 52   14.19 12.27     G8 13 0
47 BD+49 920 * 03 25 02.7725436406 +50 12 01.752665613   10.84 10.29     F8IV-V 10 0
48 Cl* Melotte 20 AP 25 * 03 25 16.2285473206 +48 22 23.915438390   13.13 12.25   11.50 K0 20 0
49 BD+49 925 * 03 25 37.6489260768 +50 19 17.949916270   10.67 10.10     F5V 29 0
50 Cl* Melotte 20 AP 28 * 03 25 53.9513996394 +48 31 08.955353344   14.14 13.09   12.12 ~ 16 0
51 V* V688 Per BY* 03 26 04.2107430389 +48 48 07.028032941   11.16 10.59     F9V 26 0
52 Cl* Melotte 20 AP 33 * 03 26 12.6486347452 +48 09 08.834004426   13.98 12.94   12.06 K0 11 0
53 Cl Melotte 20 696 * 03 26 19.3612946597 +49 13 32.494576942   12.37 11.61     G3 27 0
54 V* V627 Per RS* 03 26 22.6338445713 +47 16 09.422199690           G6 8 0
55 V* V628 Per BY* 03 26 25.3292815689 +48 20 06.844597160   12.88 12.03   11.32 G5 17 0
56 Cl* Melotte 20 AP 158 * 03 26 33.7116272346 +50 13 54.506559272   12.78 11.93   11.11 K0 12 0
57 Cl Melotte 20 OpC 03 26 42 +48 48.0           ~ 749 0
58 BD+48 916 * 03 27 03.2519687448 +48 47 13.346647251   10.5 10.0     F6V 26 0
59 V* V629 Per BY* 03 27 20.3725712573 +47 59 25.133745776   14.38       K2 15 0
60 Cl Melotte 20 750 * 03 27 37.8038556228 +48 59 28.792232769   11.18 10.59     F9V 28 0
61 Cl Melotte 20 767 * 03 27 55.0177290571 +49 45 37.186545055   11.3 10.5     F9V 33 0
62 Cl* Melotte 20 AP 65 * 03 28 00.8003624227 +49 00 00.928321848   14.05 13.00   12.09 K0 14 0
63 Cl Melotte 20 771 * 03 28 07.0744013676 +50 32 08.997968485   11.8 11.4     ~ 14 0
64 V* V488 Per BY* 03 28 18.6826884932 +48 39 48.192626053   13.83 12.83   11.95 K0 26 0
65 Cl* Melotte 20 AP 168 * 03 28 19.5 +45 47 59   12.88 11.98   11.23 ~ 4 0
66 V* V630 Per BY* 03 28 22.5412417193 +49 14 29.364953491   13.77 12.78   11.91 K0 17 0
67 V* V631 Per BY* 03 28 23.7457086620 +47 36 49.880909214         12.21 K7 10 0
68 BD+49 939 SB* 03 28 34.6607325306 +50 16 00.730833307   10.63 10.18     F3IV-V 18 0
69 Cl* Melotte 20 AP 75 * 03 28 47.4464484242 +49 16 27.927253693   15.09 13.82   12.91 ~ 10 0
70 Cl Melotte 20 828 * 03 28 59.6428788283 +48 14 08.236806088   12.30 11.59     ~ 19 0
71 Cl Melotte 20 833 * 03 29 08.2700358581 +48 10 50.832744627   10.61 10.1     F6 21 0
72 Cl* Melotte 20 AP 173 * 03 29 14.1592725424 +49 41 16.879932407   13.34 12.29 11.99 11.38 K3.2 6 0
73 BD+47 837 SB* 03 29 26.2412946881 +48 12 11.692542362   10.60 10.00     F9V 32 0
74 BD+48 931 * 03 29 46.8612655833 +49 00 34.219274948   9.72 9.21     F6V 19 0
75 HIP 16294 SB* 03 30 03.7202786957 +51 30 43.695268054 11.10 11.08 10.56   10.00 G0~ 9 0
76 Cl* Melotte 20 AP 197 * 03 30 28.7 +47 38 28   13.31 12.31   11.33 ~ 8 0
77 Cl Melotte 20 917 * 03 30 47.6112532601 +47 53 21.487273824   11.59 10.93     ~ 27 0
78 Cl Melotte 20 968 * 03 31 54.2145376849 +48 31 38.421190310   11.08 10.53     F8V 16 0
79 Cl* Melotte 20 AP 194 * 03 32 14.9558821935 +46 39 22.777003848   12.88 12.28   11.36 ~ 5 0
80 Cl Melotte 20 988 * 03 32 16.7605200927 +48 08 27.630287744   10.47 9.86     F5IV-V 10 0
81 Cl* Melotte 20 AP 196 * 03 32 19.3236938365 +47 04 26.940748056   13.42 12.14 12.29 11.69 K3 7 0
82 TYC 3320-348-1 SB* 03 32 47.8730296632 +50 21 18.874196059   11.80 10.92     G0 11 0
83 V* V538 Per BY* 03 32 51.0943693369 +49 50 43.878061199         12.04 K5 15 0
84 Cl* Melotte 20 AP 200 * 03 32 51.2 +50 07 10     12.65   11.64 ~ 5 0
85 Cl Melotte 20 1000 PM* 03 33 00.4396059162 +50 25 13.801654324   12.00 11.47     F1 2 0
86 Cl Melotte 20 1036 * 03 33 27.9964307102 +49 11 57.658940192   12.35 11.41     G 7 0
87 Cl* Melotte 20 AP 206 * 03 33 42.150 +47 20 48.69   13.59 12.68   11.86 ~ 4 0
88 Cl Melotte 20 1032 * 03 33 57.6715924489 +51 40 48.420163492   11.65 11.06     F5 3 0
89 Cl Melotte 20 1100 * 03 34 28.5596745349 +47 04 24.530287227   11.73 11.10     G3 11 0
90 V* V539 Per BY* 03 34 29.3475297636 +49 21 43.512893758           K4 14 0
91 Cl* Melotte 20 AP 213 * 03 34 39.4168310612 +48 18 43.038918626   13.12 11.28   10.81 G6 5 0
92 Cl Melotte 20 1086 * 03 35 05.0226704959 +50 54 45.154045347   11.89 11.21     G0: 16 0
93 Cl Melotte 20 1101 * 03 35 08.7572245749 +49 44 39.629941643   11.70 10.96     G4 25 0
94 Cl Melotte 20 1110 * 03 35 26.6855169374 +49 38 00.688926558   12.15 11.51     G3 8 0
95 Cl* Melotte 20 AP 222 * 03 36 11.8 +49 44 15   13.12 12.26     ~ 3 0
96 Cl Melotte 20 1181 * 03 36 39.7825531223 +47 47 32.254539631   11.24 10.49     G2 9 0
97 Cl Melotte 20 1180 * 03 36 55.0932416965 +48 49 42.834265834   10.58 10.15     F7 15 0
98 TYC 3317-16-1 SB* 03 36 57.7412351814 +48 44 45.565354919   11.72 11.01     F7 14 0
99 Cl Melotte 20 1144 * 03 36 58.1176861092 +51 13 03.560390188   12.22 11.23     G5 3 0
100 BD+49 976 SB* 03 37 13.9688313846 +49 33 27.150613395   10.54 10.12     F6IV-V 14 0
101 Cl* Melotte 20 AP 235 * 03 38 14.7 +45 51 12   14.15 13.12   12.10 ~ 4 0
102 BD+51 756 * 03 39 02.9058107632 +51 36 37.135753340   11.47 10.78     G2 13 0
103 Cl* Melotte 20 AP 252 * 03 41 13.3 +45 48 12   14.07 12.95   11.90 ~ 3 0
104 Cl* Melotte 20 AP 255 * 03 42 44.9 +49 39 02     12.18   11.48 ~ 4 0
105 Cl* Melotte 20 AP 256 * 03 43 38.5171912381 +46 03 47.640532255   12.41 11.94   11.07 ~ 5 0
106 Cl* Melotte 20 AP 257 * 03 44 02.6036148674 +48 39 58.608927402     13.00   12.08 ~ 5 0
107 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2948 0
108 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1206 0
109 Cl Melotte 111 OpC 12 25 06.00 +26 06 00.0           ~ 399 0
110 Cl Melotte 20 828 B * ~ ~   14.71 11.88     ~ 2 0
111 Cl Melotte 20 828 A * ~ ~   12.26 11.62     ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.04.05-00:34:05

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