2003A&A...399..105M

Query : 2003A&A...399..105M

2003A&A...399..105M - Astronomy and Astrophysics, volume 399105-112 (2003/2-3)

Red giants in open clusters. X. NGC 1817.

MERMILLIOD J.-C., LATHAM D.W., GLUSHKOVA E.V., IBRAHIMOV M.A., BATIRSHINOVA V.M., STEFANIK R.P. and JAMES D.J.

Abstract (from CDS):

Radial-velocity and BV CCD observations of 29 red-giant candidates in the central part of the intermediate-age open cluster NGC 1817 have confirmed the membership of 21 stars. In addition, we have used radial velocities and new UBVR photoelectric photometry to investigate the membership of 59 new candidates located in an outer corona surrounding NGC 1817, identified from the POSS plates. We have confirmed 18 new members out to a distance of 27'. from the centre, thus doubling the previous cluster radius. Ten definite spectroscopic-binary members have been discovered, corresponding to a binary frequency of 25.6% and four orbits have been determined so far. Three additional stars have been identified as possible spectroscopic-binary members. We derive a cluster mean velocity of +65.33±0.09 (0.52 s.e.) km/s based on 29 members with no detected velocity variations plus the 3 binary members with orbital solutions. The radial distribution of the 39 red-giant members shows a strong concentration of spectroscopic binaries in the inner part of the cluster, similar to that observed in M 67, although NGC 1817 is much younger.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: NGC 1817 - stars: binaries: spectroscopic - techniques: radial velocities - stars: AGB and post-AGB

VizieR on-line data: <Available at CDS (J/A+A/399/105): table1.dat table2.dat table3.dat position.dat>

Nomenclature: Table 3, col(2): Cl* NGC 1817 EG NN (Nos 1-59).

CDS comments: Table 3, col(1): designation form Tian+ 1983 not in SIMBAD (Numbering between 500 and 700, and numbering from WEBDA where N>1000 with 1NNN form WEBDA = NNN from Tian). Table 3, col(3) = [BTZ98] NNN in SIMBAD.

Simbad objects: 89

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Number of rows : 89
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* NGC 1817 EG 52 * 05 10 08.9998736088 +16 34 24.721952448     12.210     ~ 4 0
2 Cl* NGC 1817 EG 56 * 05 10 23.1740607576 +16 27 18.271682064     11.809     ~ 7 0
3 Cl* NGC 1817 EG 51 * 05 10 42.5349318792 +16 46 10.018304328     12.142     ~ 7 0
4 Cl* NGC 1817 EG 50 * 05 10 46.8465417096 +16 44 38.369284152     12.663     ~ 6 0
5 Cl* NGC 1817 EG 55 * 05 10 46.9293638784 +16 28 20.659749168     11.785     ~ 7 0
6 Cl* NGC 1817 MMU 1152 HB* 05 10 48.1961320392 +16 28 40.175721516   13.3 12.157     ~ 20 0
7 Cl* NGC 1817 EG 46 SB* 05 10 51.0729010896 +16 53 36.094952652   11.62 11.410     ~ 8 0
8 Cl* NGC 1817 EG 45 * 05 10 54.4158441120 +16 53 52.914659244     12.266     ~ 5 0
9 Cl* NGC 1817 EG 44 * 05 10 55.4712067680 +16 58 10.754167224     11.868     ~ 5 0
10 Cl* NGC 1817 EG 59 * 05 11 04.1274871896 +16 17 02.580561312     11.326     ~ 6 0
11 Cl* NGC 1817 MMU 1208 HB* 05 11 10.7438408784 +16 26 41.222984820   13.46 12.370     ~ 14 0
12 Cl* NGC 1817 EG 49 * 05 11 15.5870854968 +16 46 23.456628588     12.732     ~ 4 0
13 Cl* NGC 1817 EG 53 * 05 11 21.8557332648 +16 31 48.397921392     11.798     ~ 7 0
14 Cl* NGC 1817 EG 43 * 05 11 23.3279008512 +17 03 42.283069272     14.079     ~ 4 0
15 Cl* NGC 1817 MMU 1114 HB* 05 11 27.5555154391 +16 47 04.613516367   13.93 12.752     ~ 16 0
16 Cl* NGC 1817 EG 58 * 05 11 27.8632275888 +16 17 04.938691704     12.154     ~ 7 0
17 Cl* NGC 1817 EG 41 * 05 11 38.9213674224 +17 13 42.273948864   12.96 12.28     ~ 4 0
18 Cl* NGC 1817 MMU 1135 HB* 05 11 39.3156595528 +16 40 09.391124814   13.62 12.404     ~ 19 0
19 Cl* NGC 1817 EG 40 * 05 11 45.0044892480 +17 12 21.364321068   12.43 11.42     ~ 3 0
20 Cl* NGC 1817 MMU 1117 HB* 05 11 49.9164594955 +16 50 41.852539177   13.94 12.406     ~ 25 0
21 NGC 1817 265 * 05 11 50.2443235056 +16 32 54.691479600   14.23 12.903     ~ 6 0
22 NGC 1817 269 * 05 11 50.8710164856 +16 34 15.767523696   13.68 12.293     ~ 10 0
23 NGC 1817 244 HB* 05 11 51.9333525644 +16 40 45.674585766   13.63 12.490     ~ 25 0
24 Cl* NGC 1817 EG 39 RG* 05 11 59.6955596760 +17 05 42.622757376     12.401     ~ 6 0
25 Cl* NGC 1817 EG 32 * 05 12 01.3637967864 +16 56 42.982846620     12.817     ~ 5 0
26 NGC 1817 90 * 05 12 04.5868057752 +16 40 26.801336352   13.59 12.204     ~ 16 0
27 NGC 1817 81 HB* 05 12 06.2661540048 +16 38 15.326508120   13.31 12.135     ~ 25 0
28 Cl* NGC 1817 EG 4 SB* 05 12 06.3326133888 +16 21 04.260187872     12.552     ~ 9 0
29 NGC 1817 177 HB* 05 12 06.5166674678 +16 44 44.615491070   13.55 12.322     ~ 21 0
30 NGC 1817 164 SB* 05 12 07.6989857544 +16 36 38.754741204   12.54 11.721     ~ 20 0
31 NGC 1817 79 HB* 05 12 10.6739122296 +16 38 31.112306268   13.54 12.443     ~ 33 0
32 Cl* NGC 1817 EG 5 * 05 12 11.5272320472 +16 06 12.155652648           ~ 1 0
33 NGC 1817 161 * 05 12 12.8007867096 +16 35 28.885263576   13.9 11.423     ~ 16 0
34 NGC 1817 44 HB* 05 12 17.5605491088 +16 38 44.092900032   12.51 11.068     ~ 24 0
35 NGC 1817 12 HB* 05 12 18.5293247280 +16 41 45.554521344   13.62 12.564     ~ 21 0
36 NGC 1817 8 HB* 05 12 19.3874697192 +16 40 48.680441652   13.20 12.052     ~ 29 0
37 Cl* NGC 1817 MMU 1292 HB* 05 12 19.6430335783 +16 54 23.039717383   13.4 12.293     ~ 18 0
38 Cl* NGC 1817 MMU 673 HB* 05 12 21.0554636027 +16 26 50.890297055   13.71 12.726     ~ 15 0
39 Cl* NGC 1817 EG 38 * 05 12 22.4956164600 +17 09 28.626999984           ~ 8 0
40 NGC 1817 40 HB* 05 12 22.5849093982 +16 38 08.616795459   13.75 12.729     ~ 21 0
41 NGC 1817 155 * 05 12 23.0446345440 +16 34 00.904779984   13.885 12.448     ~ 15 0
42 Cl* NGC 1817 EG 2 * 05 12 23.6657706768 +16 28 11.243179380     12.672     ~ 8 0
43 NGC 1817 103 * 05 12 23.9592243768 +16 45 10.129813020   13.845 12.581     ~ 15 0
44 2MASS J05122465+1635488 AB? 05 12 24.6514051896 +16 35 48.865173360   13.12 12.057     ~ 36 0
45 NGC 1817 72 RB? 05 12 26.2156988472 +16 35 55.668883020   13.21 12.089     ~ 18 0
46 NGC 1817 71 HB* 05 12 29.3226398160 +16 35 54.865806684   13.86 12.889     ~ 24 0
47 Cl* NGC 1817 EG 37 * 05 12 29.4100288296 +17 11 59.273609172           ~ 1 0
48 NGC 1817 185 HB* 05 12 31.0047029993 +16 49 25.237039775   13.97 12.799     ~ 17 0
49 NGC 1817 56 SB* 05 12 31.4532777240 +16 46 13.691562240   12.31 11.304     ~ 19 0
50 NGC 1817 30 HB* 05 12 32.5559684400 +16 39 57.656024280   13.5 12.438     ~ 22 0
51 Cl* NGC 1817 MMU 1456 * 05 12 32.8315448568 +16 28 25.483886472   12.98 11.370     ~ 17 0
52 NGC 1817 OpC 05 12 33.9 +16 41 34           ~ 210 0
53 NGC 1817 19 HB* 05 12 35.9647699440 +16 43 28.212735504   13.26 12.186     ~ 21 0
54 Cl* NGC 1817 EG 36 * 05 12 36.3010034448 +17 11 36.255309864           ~ 3 0
55 NGC 1817 22 HB* 05 12 38.4362882760 +16 42 23.181651864   13.43 12.292     ~ 20 0
56 Cl* NGC 1817 EG 35 SB* 05 12 41.0936358216 +17 11 02.049471456   12.34 11.81     ~ 6 0
57 NGC 1817 187 * 05 12 42.0582560136 +16 48 35.551446156   12.86 11.463     ~ 9 0
58 NGC 1817 138 * 05 12 44.0175222336 +16 37 11.802256392   13.98 12.617     ~ 10 0
59 NGC 1817 64 HB* 05 12 45.3607738272 +16 43 41.116493712   13.25 12.060     ~ 17 0
60 Cl* NGC 1817 EG 33 HB* 05 12 47.9802272736 +16 59 20.396531724     12.668     ~ 12 0
61 NGC 1817 121 HB* 05 12 49.9915309392 +16 44 00.019769244   13.77 12.675     ~ 15 0
62 NGC 1817 127 HB* 05 12 50.0998659110 +16 40 49.755282314   13.36 12.177     ~ 27 0
63 Cl* NGC 1817 MMU 1459 HB* 05 12 50.8842699216 +16 28 57.924618456   13.06 11.850     ~ 15 0
64 Cl* NGC 1817 MMU 1265 HB* 05 12 52.1281761312 +17 08 16.334805372   13.54 12.500     ~ 12 0
65 Cl* NGC 1817 MMU 677 HB* 05 12 53.6460011569 +16 49 33.756616355   13.73 12.479     ~ 22 0
66 Cl* NGC 1817 EG 6 * 05 12 54.2059366728 +16 32 48.041746368     12.442     ~ 8 0
67 NGC 1817 212 HB* 05 12 54.8153495488 +16 36 57.772707061   13.45 12.307     ~ 17 0
68 Cl* NGC 1817 EG 23 * 05 12 59.3981937456 +16 59 47.893358868     12.444     ~ 6 0
69 NGC 1817 206 HB* 05 13 01.8086712600 +16 41 14.366465556     11.749     ~ 25 0
70 Cl* NGC 1817 EG 24 * 05 13 02.0662530432 +17 03 02.654710992     12.443     ~ 6 0
71 NGC 1817 211 HB* 05 13 02.2486122480 +16 39 19.177239348   13.37 12.207     ~ 18 0
72 Cl* NGC 1817 EG 22 * 05 13 03.5814005880 +16 58 04.466529444   12.19 11.214     ~ 7 0
73 Cl* NGC 1817 MMU 1408 HB* 05 13 06.2258523072 +16 31 14.273579352   13.89 12.675     ~ 14 0
74 Cl* NGC 1817 EG 12 * 05 13 09.7624509000 +16 41 42.987410304     11.892     ~ 7 0
75 Cl* NGC 1817 MMU 1412 HB* 05 13 13.8327561258 +16 33 24.436828957   13.82 12.562     ~ 18 0
76 Cl* NGC 1817 EG 21 * 05 13 22.4348860848 +16 52 17.335394688     11.928     ~ 4 0
77 Cl* NGC 1817 EG 25 PM* 05 13 25.2246593976 +17 09 20.146603680           ~ 3 0
78 Cl* NGC 1817 EG 10 * 05 13 32.5273360800 +16 17 14.088735492     12.73     ~ 8 0
79 Cl* NGC 1817 MMU 1420 HB* 05 13 39.6744724560 +16 39 16.225083972   13.16 12.475     ~ 19 0
80 Cl* NGC 1817 EG 14 * 05 13 39.8529243912 +16 39 27.150703776     13.718     ~ 5 0
81 Cl* NGC 1817 EG 27 * 05 13 40.4618145720 +16 54 29.983342824     11.519     ~ 6 0
82 Cl* NGC 1817 MMU 1433 HB* 05 13 41.7731790480 +16 43 29.089376076   13.32 12.082     ~ 28 0
83 Cl* NGC 1817 EG 26 * 05 13 59.1034042776 +17 08 04.250146884           ~ 3 0
84 Cl* NGC 1817 EG 16 * 05 14 03.8428748520 +16 37 51.347647380           ~ 5 0
85 Cl* NGC 1817 MMU 1574 HB* 05 14 12.5796254784 +16 41 45.018994380   13.3 12.170     ~ 11 0
86 Cl* NGC 1817 EG 28 * 05 14 29.2562030952 +16 52 41.480541768           ~ 3 0
87 Cl* NGC 1817 EG 29 * 05 14 43.0442877312 +16 53 59.324009064           ~ 1 0
88 Cl* NGC 1817 EG 19 * 05 14 45.6569338176 +16 29 33.534764700           ~ 1 0
89 Cl* NGC 1817 EG 17 * 05 14 47.6826698040 +16 45 07.344596340           ~ 1 0

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