1998A&A...337..125G

Query : 1998A&A...337..125G

1998A&A...337..125G - Astronomy and Astrophysics, volume 337, 125-140 (1998/9-1)

The overlapping open clusters NGC 1750 and NGC 1758. III. Cluster-field segregation and clusters physical parameters.

GALADI-ENRIQUEZ D., JORDI C. and TRULLOLS E.

Abstract (from CDS):

Cluster-field segregation and determination of physical parameters of the open clusters NGC 1750 and NGC 1758 were performed from CCD and photographic photometric and astrometric surveys previously published by the authors. Membership probabilities were computed to a brightness limit of R=15mag through a non-standard method in a fully non-parametric approach, using proper motions, positions and photometry. This study allowed several parameters for NGC 1750 and NGC 1758 to be determined, including position, size, density profile, absorption, distance, age, luminosity function and mass. The common colour excess of both clusters is E(B-V)=0.34mag. NGC 1750 is slightly younger (logt=8.3), closer (V-Mv=9.0mag) and less concentrated than NGC 1758 (logt=8.60 and V-Mv=9.4mag). We also conclude that NGC 1746 is an erroneous assignation (not corresponding to any real open cluster), and that NGC 1750 and NGC 1758 are overlapping clusters, but they do not constitute a gravitationally bounded system.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: NGC 1746 - open clusters and associations: individual: NGC 1750 - open clusters and associations: individual: NGC 1758 - stars: luminosity function, mass function - methods: statistical

VizieR on-line data: <Available at CDS (J/A+A/337/125): table1.dat table2.dat>

Simbad objects: 151

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Number of rows : 151
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 NGC 103 OpC 00 25 14.9 +61 19 34   10.28 9.8     ~ 79 0
2 NGC 457 OpC 01 19 32.9 +58 16 41   6.97 6.4     ~ 244 2
3 Cl Trumpler 1 OpC 01 35 40 +61 17.0   8.35 8.1     ~ 102 0
4 NGC 659 OpC 01 44 25.9 +60 40 44   8.40 7.9     ~ 88 0
5 NGC 752 OpC 01 56 53.5 +37 47 38           ~ 642 0
6 NGC 1528 OpC 04 15 30.7 +51 13 05   6.83 6.4     ~ 120 0
7 GJTR 723 * 05 03 04.5850188336 +23 37 37.179651360 13.627 13.677 12.907 12.849   ~ 11 0
8 GJTGTZ 51577 * 05 03 05.7280990638 +23 44 01.360443845 14.883 14.613 13.861 13.378 12.871 ~ 3 0
9 2MASS J05031246+2342077 * 05 03 12.4617542739 +23 42 07.665895560 14.723 14.54 13.713 13.54   ~ 11 0
10 Cl* NGC 1746 CUF 18 * 05 03 13.7817562728 +23 42 59.209860384 12.753 12.663 12.100 12.062 11.447 ~ 4 0
11 HD 32318 Y*O 05 03 17.2902301776 +23 49 17.479429968 8.094 8.68 8.408 8.21 8.031 A2e 17 0
12 GJTGTZ 49398 * 05 03 19.0739099424 +23 46 38.866839175 13.133 12.979 12.418 12.057 11.706 ~ 4 0
13 TYC 1845-126-1 * 05 03 20.8675752727 +24 01 35.385255848   12.29 11.67 12.33   ~ 11 0
14 HD 285108 * 05 03 22.5279636240 +23 43 32.434726260 11.588 11.29 11.308 11.112 10.888 A 11 0
15 HD 285109 * 05 03 23.2912744200 +23 48 53.339534028 10.814 10.70 10.622 10.429 10.248 B9 13 0
16 GJTGTZ 52103 * 05 03 25.5359539784 +23 43 11.997969115 13.443 13.346 12.632 12.228 11.815 ~ 4 0
17 2MASS J05033112+2338023 * 05 03 31.1263681872 +23 38 02.270354064 15.438 15.451 14.544 14.009 13.508 ~ 9 0
18 GJTGTZ 53258 * 05 03 31.5570883392 +23 41 42.210689352 15.543 15.65 14.831 14.323 13.882 ~ 3 0
19 BD+23 817 * 05 03 31.7198126136 +23 39 25.723676412 10.79 10.73 10.487 10.31 10.074 B9 15 0
20 HD 285127 * 05 03 32.5913284536 +23 40 46.948080360 9.494 9.93 9.599 9.459 9.264 B9 10 0
21 GJTR 1340 * 05 03 35.5294628348 +23 56 39.576058882 14.576 14.710 13.986 13.568 13.147 ~ 9 0
22 GJTGTZ 49797 * 05 03 36.5219921200 +23 46 10.747134950 15.491 15.404 14.479 13.936 13.396 ~ 6 0
23 GJTR 1406 * 05 03 37.9417786122 +23 42 01.808772131 13.51 13.309 12.709 12.39 12.061 ~ 9 0
24 GJTGTZ 52762 * 05 03 38.2410795941 +23 42 15.263155212 13.57 13.366 12.746 12.414 12.054 ~ 6 0
25 HD 285110 Pe* 05 03 38.5648724404 +23 43 49.675494116 10.815 11.08 10.690 10.73 10.256 B8IV(HgMn) 11 0
26 NGC 1750 OpC 05 03 42.2 +23 41 42           ~ 64 1
27 GJTGTZ 51618 * 05 03 43.1259069833 +23 43 53.464384463 15.163 14.973 14.112 13.608 13.077 ~ 10 0
28 Cl* NGC 1746 CUF 26 * 05 03 45.5077916194 +23 47 53.715983367 12.189 12.09 11.634 11.68 11.218 ~ 13 0
29 Cl* NGC 1746 CUF 25 * 05 03 45.5294265464 +23 47 17.206573305 12.375 12.123 11.712 11.502 11.228 ~ 7 0
30 HD 285126 * 05 03 45.9008324915 +23 35 51.668628521 10.815 10.76 10.630 10.43 10.225 B9 13 0
31 Cl* NGC 1746 CUF 27 * 05 03 48.1 +23 47 38 12.977 12.687 12.229 12.002 11.727 ~ 3 0
32 GJTGTZ 54631 * 05 03 48.4068059400 +23 39 58.839316524 15.466 15.326 14.391 13.844 13.288 ~ 3 0
33 UCAC4 570-014143 * 05 03 49.0279944888 +23 52 34.033547568 13.818 13.695 13.056 12.687 12.295 ~ 11 0
34 NGC 1746 err 05 03 50 +23 46.2           ~ 38 0
35 GJTGTZ 58050 * 05 03 50.6835997656 +23 35 36.718810152 13.351 13.106 12.499 12.101 11.676 ~ 8 0
36 2MASS J05035137+2333257 * 05 03 51.3804285696 +23 33 25.727372388 14.491 14.369 13.617 13.156 12.685 ~ 9 0
37 TYC 1845-3273-1 * 05 03 54.1250662800 +23 37 09.129855612 12.978 12.11 12.222 12.26 11.601 ~ 9 0
38 HD 284120 * 05 03 54.9263082624 +23 56 05.529478437 9.961 10.26 10.064 10.101 9.774 A0 15 0
39 HD 285124 * 05 03 57.6430506444 +23 41 06.394148330 11.738 11.57 11.363 11.168 10.936 B9 13 0
40 2MASS J05035967+2354556 * 05 03 59.6718272064 +23 54 55.669904532 13.423 13.143 12.619 12.303 11.988 ~ 9 0
41 GJTGTZ 55681 * 05 03 59.7501045360 +23 38 46.894730172 13.546 13.519 12.850 12.513 12.205 ~ 9 0
42 HD 285112 * 05 03 59.7771920191 +23 44 44.209485477 11.276 11.27 10.922 10.929 10.523 A 13 0
43 GJTR 1950 * 05 03 59.8118365920 +23 35 28.642828200 14.851 14.807 13.950 13.455 12.986 ~ 11 0
44 Cl* NGC 1746 CUF 28 * 05 04 00.8143133160 +23 46 24.107379780 11.7 11.55 11.254 11.104 10.879 ~ 11 0
45 GJTGTZ 50818 * 05 04 00.8506346871 +23 44 45.089094167 13.656 13.322 12.744 12.441 12.069 ~ 9 0
46 GJTGTZ 40992 * 05 04 03.8093266536 +23 56 12.377876028   15.02 14.21     ~ 1 0
47 GJTGTZ 61873 * 05 04 05.7273463826 +23 30 59.313304410 14.076 13.865 13.216 12.824 12.399 ~ 11 0
48 GJTGTZ 38367 * 05 04 08.971 +23 59 18.39   14.91 14.00     ~ 1 0
49 GJTGTZ 39209 * 05 04 09.6581260896 +23 58 13.754173116   14.34 13.68     ~ 1 0
50 GJTGTZ 52104 * 05 04 10.9914544056 +23 43 07.502440512 14.702 14.696 13.942 13.462 12.962 ~ 9 0
51 GJTGTZ 57323 * 05 04 12.3119471904 +23 36 32.332497264 17.082 16.463 15.341 14.687 14.092 ~ 3 0
52 Cl* NGC 1746 CUF 34 * 05 04 12.4260278203 +23 40 06.510796029 12.725 12.588 12.156 11.897 11.614 ~ 7 0
53 2MASS J05041263+2339331 * 05 04 12.6350409050 +23 39 33.157228295 16.302 16.193 15.253 14.688 14.133 ~ 9 0
54 GJTGTZ 40198 * 05 04 12.8909734320 +23 56 53.659561524   15.34       ~ 5 0
55 HD 285122 * 05 04 13.9663522680 +23 38 50.873085888 9.955 10.16 9.889 9.676 9.459 A0 24 2
56 GJTGTZ 52885 * 05 04 15.4049115710 +23 42 04.278916944 14.797 14.789 14.047 13.568 13.071 ~ 4 0
57 Cl* NGC 1746 CUF 341 * 05 04 15.5382942330 +23 47 38.032471964 14.978 14.786 13.970 13.457 12.965 ~ 7 0
58 HD 285123 * 05 04 15.9728643250 +23 41 42.329407050 11.6 11.20 11.271 11.05 10.818 A 16 0
59 GJTGTZ 57021 * 05 04 15.9839049634 +23 36 54.358802840 14.891 14.793 14.083 13.637 13.187 ~ 7 0
60 GJTGTZ 29443 * 05 04 16.941 +24 10 21.25   13.27 12.61     ~ 2 0
61 GJTGTZ 51234 * 05 04 17.1930701712 +23 44 18.541066956 15.844 15.615 14.696 14.228 13.742 ~ 6 0
62 Cl* NGC 1746 CUF 340 * 05 04 17.4662083128 +23 47 40.053460901 14.973 14.796 14.069 13.598 13.139 ~ 7 0
63 TYC 1845-1594-1 * 05 04 17.7281150736 +24 00 02.148724944   12.63 12.16     ~ 9 0
64 2MASS J05041881+2336397 * 05 04 18.8180318591 +23 36 39.731905054 14.175 14.037 13.357 12.937 12.53 ~ 10 0
65 Cl* NGC 1746 CUF 5 * 05 04 19.1255852615 +23 36 21.704421644 12.516 11.75 11.862 11.90 11.377 ~ 10 0
66 Cl* NGC 1746 CUF 339 * 05 04 19.1298019807 +23 47 55.115639470 15.351 15.092 14.193 13.622 13.072 ~ 3 0
67 Cl* NGC 1746 CUF 6 * 05 04 19.3997784456 +23 33 39.258197532   11.95 11.69     ~ 5 0
68 TYC 1845-42-1 Pe* 05 04 20.2989777072 +23 58 15.476890584   12.12 11.96 12.35   A1VSrSi 7 0
69 HD 285113 * 05 04 21.3729400800 +23 45 26.402626008 11.87 11.59 11.255 11.03 10.78 A0 13 0
70 GJTGTZ 56333 * 05 04 22.0752493741 +23 37 49.864889003 14.425 14.326 13.651 13.253 12.875 ~ 9 0
71 TYC 1845-976-1 * 05 04 22.6254631824 +24 01 24.706899084   11.71 11.08 11.41   ~ 9 0
72 HD 285115 * 05 04 22.9571071824 +23 52 14.489074812 11.757 11.40 11.126 10.847 10.569 A0 11 0
73 GJTGTZ 50979 * 05 04 23.2478296367 +23 44 36.753806232 15.417 15.275 14.387 13.851 13.29 ~ 7 0
74 GJTGTZ 55233 * 05 04 23.3889370200 +23 39 07.239246228 15.646 15.557 14.651 14.121 13.589 ~ 3 0
75 2MASS J05042362+2354199 * 05 04 23.6270305944 +23 54 19.912621176 13.56 13.318 12.850 12.529 12.198 ~ 7 0
76 GJTGTZ 54327 * 05 04 26.1867406368 +23 40 02.986873320 15.225 15.162 14.325 13.815 13.318 ~ 8 0
77 Cl* NGC 1746 CUF 481 * 05 04 29.4291111095 +23 48 06.613539152 15.588 15.363 14.441 13.855 13.271 ~ 3 0
78 Cl* NGC 1746 CUF 35 * 05 04 31.3197986448 +23 40 32.896749648 12.707 12.525 12.020 11.724 11.41 ~ 9 0
79 Cl* NGC 1746 CUF 478 * 05 04 31.5568293844 +23 50 33.869147039 15.311 15.215 14.370 13.888 13.365 ~ 5 0
80 GJTGTZ 52124 * 05 04 31.6207220856 +23 43 03.367761528 15.656 15.55 14.674 14.112 13.568 ~ 9 0
81 Cl* NGC 1746 CUF 501 * 05 04 32.2439365467 +23 45 35.514926522 13.797 13.484 12.925 12.638 12.295 ~ 5 0
82 Cl* NGC 1746 CUF 483 * 05 04 32.8275244924 +23 49 06.650053665 13.802 13.461 12.849 12.488 12.102 ~ 8 0
83 GJTGTZ 56998 * 05 04 32.8498542778 +23 36 52.250877669 14.077 13.947 13.268 12.917 12.53 ~ 5 0
84 Cl* NGC 1746 CUF 4 * 05 04 32.9980580664 +23 35 57.712308252 10.984 11.08 10.772 10.601 10.393 ~ 11 0
85 Cl* NGC 1746 CUF 38 * 05 04 34.3269605760 +23 45 00.608168448 12.806 12.41 12.107 11.9 11.6 ~ 12 0
86 Cl* NGC 1746 CUF 487 * 05 04 35.4548455128 +23 52 02.947778328 13.499 13.215 12.729 12.515 12.17 ~ 6 0
87 GJTGTZ 58905 * 05 04 35.514 +23 34 31.13   13.84 13.14     ~ 1 0
88 Cl* NGC 1746 CUF 36 * 05 04 36.1280424456 +23 42 56.819425392 13.078 12.52 12.328 12.032 11.717 ~ 10 0
89 HD 285116 * 05 04 36.5543808384 +23 49 45.688825740 11.426 11.20 10.760 10.511 10.188 A3 12 0
90 Cl* NGC 1746 CUF 487q * 05 04 36.7457510256 +23 51 21.926371140 14.191 14.06 13.305 12.86 12.398 ~ 4 0
91 GJTGTZ 44639 * 05 04 38.5169171664 +23 51 39.535242192 15.691 15.472 14.574 14.034 13.495 ~ 7 0
92 GJTGTZ 54608 * 05 04 39.0845654256 +23 39 51.782221224 14.568 14.575 13.725 13.269 12.849 ~ 9 0
93 Cl* NGC 1746 CUF 37 * 05 04 39.2372194392 +23 44 11.802993504 12.597 12.09 11.968 11.735 11.478 ~ 10 0
94 Cl* NGC 1746 CUF 498 * 05 04 39.8810377392 +23 47 34.546964532 14.291 13.977 13.246 12.811 12.371 ~ 11 0
95 Cl* NGC 1746 CUF 46 * 05 04 39.9704109072 +23 47 53.189613276 13.188 12.839 12.276 11.99 11.657 ~ 8 0
96 NGC 1758 OpC 05 04 42.0 +23 48 47           ~ 49 0
97 Cl* NGC 1746 CUF 496 * 05 04 42.0219575808 +23 49 16.819778964 13.889 13.581 12.971 12.635 12.24 ~ 5 0
98 GJTGTZ 48661 * 05 04 42.1620596083 +23 47 20.754368933 16.369 16.129 15.145 14.601 14.068 ~ 6 0
99 Cl* NGC 1746 CUF 489 * 05 04 42.3812130168 +23 51 32.296237992 14.718 14.574 13.868 13.398 12.96 ~ 7 0
100 Cl* NGC 1746 CUF 546 * 05 04 42.4733489928 +23 46 26.511932028 14.654 14.443 13.641 13.214 12.734 ~ 9 0
101 GJTGTZ 53753 * 05 04 43.0740186888 +23 40 47.072852616 13.576 13.302 12.786 12.521 12.214 ~ 9 0
102 GJTGTZ 47176 * 05 04 43.3295965344 +23 49 08.314350312 15.987 15.809 14.902 14.386 13.83 ~ 8 0
103 GJTGTZ 52848 * 05 04 44.6076130986 +23 42 03.989015490 16.281 15.882 14.961 14.463 13.949 ~ 3 0
104 Cl* NGC 1746 CUF 493 * 05 04 45.7820416272 +23 49 48.058704840 13.162 12.834 12.294 11.995 11.627 ~ 8 0
105 Cl* NGC 1746 CUF 541 * 05 04 45.9300225912 +23 44 45.038145552 13.287 13.005 12.530 12.297 11.995 ~ 8 0
106 Cl* NGC 1746 CUF 495 * 05 04 46.3807257923 +23 49 00.949873835 12.878 12.633 12.097 11.84 11.514 ~ 8 0
107 Cl* NGC 1746 CUF 494 * 05 04 46.7732028840 +23 49 32.608708896 14.267 14.018 13.387 13.022 12.622 ~ 9 0
108 Cl* NGC 1746 CUF 542 * 05 04 48.4645318344 +23 45 08.219348172 14.094 13.932 13.205 12.839 12.421 ~ 9 0
109 GJTGTZ 36617 * 05 04 49.150 +24 01 29.82   13.36 12.80     ~ 1 0
110 GJTGTZ 47776 * 05 04 50.4481616603 +23 48 26.023612163 15.994 15.766 14.831 14.276 13.718 ~ 8 0
111 Cl* NGC 1746 CUF 52 * 05 04 50.4728283456 +23 45 19.637482860 12.595 12.02 11.938 11.714 11.458 ~ 11 0
112 TYC 1845-2211-1 * 05 04 51.1354063848 +24 01 04.562027688   12.67 11.59 12.14   ~ 5 0
113 Cl* NGC 1746 CUF 48 * 05 04 52.7202586201 +23 49 54.039452153 13.654 13.4 12.750 12.385 11.969 ~ 5 0
114 GJTGTZ 36473 * 05 04 52.8112558364 +24 01 42.441122244   14.03 13.40     ~ 5 0
115 GJTGTZ 60014 * 05 04 53.1848366880 +23 33 00.027670320   13.94 13.29     ~ 8 0
116 [TZS98] 135 * 05 04 55.0455038016 +23 56 59.302923504   13.43 12.95 12.80   ~ 4 0
117 HD 285118 * 05 04 55.9945830024 +23 45 11.870164692 10.865 10.88 10.624 10.437 10.251 B9 16 0
118 ATO J076.2341+23.4966 Pu* 05 04 56.2001688912 +23 29 48.094549476   12.42 11.85     ~ 5 0
119 GJTGTZ 50927 * 05 04 56.9350087622 +23 44 35.893660417 16.157 15.954 15.047 14.536 14.024 ~ 6 0
120 2MASS J05050023+2344527 * 05 05 00.2390849520 +23 44 52.742536872 14.524 14.366 13.658 13.233 12.817 ~ 8 0
121 TYC 1845-2333-1 Pe* 05 05 00.4574621664 +23 32 09.820863060   12.79 12.42     kA3hA4mA8Si 10 0
122 GJTGTZ 51664 * 05 05 01.7711638701 +23 43 38.358477342 15.503 15.358 14.542 14.055 13.569 ~ 8 0
123 GJTGTZ 42682 * 05 05 03.104 +23 53 55.64   14.53       ~ 1 0
124 GJTGTZ 50744 * 05 05 03.8219566680 +23 44 48.848301528   14.98 14.24     ~ 5 0
125 TYC 1845-2786-1 * 05 05 05.0747852784 +23 56 04.355783808   11.91 12.15 11.84   ~ 3 0
126 GJTGTZ 49125 * 05 05 05.1018020496 +23 46 42.456821520   15.12 14.23     ~ 1 0
127 GJTGTZ 50668 * 05 05 08.6537150136 +23 44 51.558659268   14.57 13.80     ~ 1 0
128 GJTGTZ 55683 * 05 05 09.3458515944 +23 38 36.005979444   14.17 13.50     ~ 8 0
129 GJTGTZ 47553 * 05 05 09.4045518888 +23 48 36.618325740   14.43 13.55     ~ 6 0
130 GJTGTZ 49751 * 05 05 09.7336542989 +23 45 57.743940524   13.14 12.64     ~ 6 0
131 GJTGTZ 62363 * 05 05 10.5356891976 +23 30 10.924994628   13.54 12.70     ~ 8 0
132 GJTGTZ 59667 * 05 05 13.137 +23 33 19.52   14.71 13.85     ~ 1 0
133 HD 285121 * 05 05 13.2750541008 +23 40 14.947267152   11.43 11.32 11.211   A2 10 0
134 GJTGTZ 57943 * 05 05 14.9045650368 +23 35 34.441083312   15.15       ~ 6 0
135 GJTGTZ 44584 * 05 05 22.790 +23 51 36.70   14.57 13.69     ~ 1 0
136 HD 285120 * 05 05 27.5012847192 +23 41 41.854424136   10.99 10.69     A0 6 0
137 GJTGTZ 50552 * 05 05 30.5993225304 +23 44 52.933233948   13.61 12.97     ~ 7 0
138 UCAC2 40143650 * 05 05 32.5866180360 +23 52 08.550028452   15.31 14.80 14.23   ~ 4 0
139 2MASS J05053343+2341331 * 05 05 33.4324781280 +23 41 33.073728648   15.16       ~ 5 0
140 TYC 1845-2111-1 * 05 05 34.3922126832 +23 48 15.411560004   12.04 11.46 12.06   ~ 6 0
141 GJTGTZ 47835 * 05 05 37.3985568432 +23 48 10.342397844   13.86 13.16     ~ 7 0
142 GJTGTZ 50256 * 05 05 40.6817697768 +23 45 15.212656548   15.64 14.71     ~ 4 0
143 GJTGTZ 41079 * 05 05 41.921 +23 55 47.57   13.35 12.74     ~ 1 0
144 GJTGTZ 47653 * 05 05 43.4914573807 +23 48 23.473445661   13.43 12.90     ~ 6 0
145 GJTGTZ 56111 * 05 05 50.8948917792 +23 37 49.121578416   12.90 12.47     ~ 7 0
146 NGC 2362 OpC 07 18 41.0 -24 57 14           ~ 409 0
147 NGC 2451 Cl* 07 45.4 -37 58           ~ 158 1
148 NGC 3680 OpC 11 25 34.1 -43 14 24   8.40 7.6     ~ 319 0
149 Cl Collinder 272 OpC 13 30 20.6 -61 19 08   8.25 7.7     ~ 64 0
150 NGC 6633 OpC 18 27 22.8 +06 36 54           ~ 385 0
151 IC 4725 OpC 18 31 44.9 -19 06 50           ~ 222 0

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