ADC/CDS Standard Document for Catalog:/catalogs/7/7183/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
VII/183 Cluster System of the LMC (Kontizas+ 1990)
================================================================================
The Cluster System of the Large Magellanic Cloud
Kontizas M., Morgan D.H., Hatzidimitriou D., Kontizas E.
<A&AS, 84, 527 (1990)>
=1990A&AS...84..527K
================================================================================
ADC_Keywords: Clusters, open ; Associations, stellar ; Magellanic Clouds
Description:
A new catalogue of clusters in the Large Magellanic Cloud has been
constructed from searches of the IIIa-J component of the ESO/SERC
Southern Sky Atlas. The catalogue contains coordinate and diameter
measurements of 1762 clusters in a 25 deg x 25 deg area of sky
centered on the LMC, but excluding the very crowded 3.5 square deg
region around the Bar. The distribution of these clusters appears
as two superimposed elliptical systems. The higher density inner
system extends over about 8 deg; the lower density outer system
can be represented by 13 deg X 10 deg disc inclined at 42 deg to
the line of sight. There are suggestions of two weak "arms" in the
latter.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 43 1762 The Cluster System of the LMC
--------------------------------------------------------------------------------
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 5 I4 --- Number [1/1762]+ Number of the cluster
7- 12 A6 --- Name Name of the cluster (1) (2) (3)
14- 15 I2 h RAh Right ascension B1950 (hours)
17- 18 I2 min RAm Right ascension (minutes)
20- 23 F4.1 s RAs [0/60] Right ascension (seconds)
25 A1 --- DE- Declination sign
26- 27 I2 deg DEd Declination B1950 (degrees)
29- 30 I2 arcmin DEm Declination (minutes)
32- 33 I2 arcsec DEs [0/60] Declination (seconds)
37- 40 F4.1 pc Dist Distance in parsec
42 A1 --- Class C or L for each cluster according to
whether it appeared compact or loose.
--------------------------------------------------------------------------------
Note (1): Acronyms are as follows:
N = NGC (New General Catalogue)
IC = Index Catalogues
SL = Shapley & Lindsay 1963
LW = Lynga & Westerlund 1963
HS = Hodge & Sexton 1966
OH = Olszewski & al. 1988
A colon after the name indicates that the cluster is incorrectly
marked in the Hodge-Wright Atlas (1967)
Note (2): (Table 2)
The following clusters have cross-identifications as shown:
HS25 = LW45 LW38 not SL24
HS62 = SL102 LW97 = SL135
HS110 = LW1131 LW344 = SL798
HS149 = LW151 (not SL279) LW351 = N2162 (not SL814)
HS215 = LW181 LW452 = SL876
HS330 = LW224 SL786 = N2151
HS450 = LW371 SL798 not N2151
HS453 = LW402 (= SL844)
The following clusters in the Hodge (1980,1988) papers should have
cross-identifications as shown:
H 1.5 = HS43 H 10.189 = HS154
H 1.25 = HS65 H 10.190 = HS156
H 9.73 = SL154 H 10.198 = SL300
H 9.79 = SL162
The N,SL,HS and LW identifications are as in Note (1) above;
the H identifications refer to Hodge (1980,1938), with the first
numerical component in the identification number referring to
the field, and the second to the number within that field.
Note (3): (Table 3)
Objects previously classified as clusters but excluded from catalog
(Table 1). The numerical codes "c" are as follows:
1 Nothing detected 4 Association
2 Asterism or bright star 5 Nebula and/or dust cloud
3 Galaxy 6 Uncertain classification
NGC objects
No c No c No c No c No c
---------------------------------------------------
1557 1 1763 5 1929 5 1962 5 2035 5
1641 3 1769 5 1933 6 1965 5 2040 4
1669 3 1773 5 1934 5 1966 5 2069 4
1715 5 1820 4 1935 5 1970 5 2082 3
1737 6 1848 4 1936 5 2020 5 2103 5
1745 2 1892 3 1937 5 2029 5 2150 3
1747 4 1895 2 1945 5 2032 5 2187 3
1748 5 1925 4 1948 4 2034 4 2199 3
1760 4
IC objects
No c No c No c No c No c
---------------------------------------------------
2105 5 2115 5 2126 5 2127 5 2128 5
2114 5 2116 5
SL objects
No c No c No c No c No c
---------------------------------------------------
18 1 73 1 279 1 681 1 875 1
20 2 78 3 289 2 705 3 878 1
21 2 97 2 305 6 741 1 879 3
24 2 104 3 313 1 785 4 880 1
31 3 159 1 442 3 820 1 887 3
32 3 182 1 447 1 847 3 889 1
38 2 185 1 532 2 851 1 894 3
54 2 220 1 545 2 856 3 898 3
69 5 277 3 673 4
HS objects
No c No c No c No c No c
---------------------------------------------------
1 3 17 3 53 1 163 1 312 6
2 3 18 3 54 3 170 6 339 6
3 2 19 3 55 2 171 3 344 1
4 3 20 3 57 2 176 2 364 2
5 3 21 3 69 3 183 3 392 3
6 3 22 2 71 3 204 3 394 3
7 3 24 1 79 2 209 2 418 6
9 3 25 3 89 3 222 2 423 5
10 1 29 2 123 3 244 4 449 3
11 3 34 2 126 1 246 1 451 3
12 1 42 2 145 2 271 2 452 3
14 2 45 3 146 3 276 2 454 3
15 2 47 3 150 3 278 3 455 3
16 2 49 6 160 2 297 6
LW objects
No c No c No c No c No c
---------------------------------------------------
6 1 52 2 113 1 291 2 396 3
10 1 54 2 118 1 300 6 415 1
19 1 67 2 120 3 304 1 429 3
26 1 70 3 210 6 334 6 435 3
29 1 71 3 224 1 338 1 439 3
40 1 74 2 230 6 340 1 443 1
42 2 90 3 253 1 349 1 464 1
45 1 92 1 257 1 351 1 465 3
49 1 93 2 275 5 377 3 476 3
51 1
OH objects
No c No c No c No c No c
---------------------------------------------------
5 6 13 2 20 6 24 6 28 3
7 6 18 6 23 6 26 6 32 6
References:
Hodge P.W., 1980, AJ 85, 423
Hodge P.W., 1988, PASP 100, 1051
Hodge P.W., Sexton J.A., 1966, AJ 71, 363
Lynga G., Westerlund B.E., 1963, MNRAS 127, 31
Olszewski E.W., Harris H.C., Schommer R.A., Canternu R.W., 1988, AJ 95, 84
Sharpley H., Lindsay E.M., 1963, Irish AJ 6, 74
Courtesy: David Morgan (dhm@roe.ac.uk)
================================================================================
(End) Joseph Florsch [CDS] 24-Mar-1994