J/A+A/391/547 Binary and multiple clusters in the LMC (Dieball+, 2002)
A statistical study of binary and multiple clusters in the LMC
Dieball A., Mueller H., Grebel E.K.
<Astron. Astrophys. 391, 547 (2002)>
=2002A&A...391..547D 2002A&A...391..547D
ADC_Keywords: Associations, stellar; Clusters, globular; Clusters, open;
Magellanic Clouds
Keywords: (galaxies): Magellanic Clouds - galaxies: star clusters - catalogs
Description:
Based on the Bica et al. (1999, Cat. J/AJ/117/238) catalogue we
studied the star cluster system of the LMC area and provide a new
catalogue of all binary and multiple cluster candidates found. As a
selection criterion we used a maximum separation of 1.4' corresponding
to 20pc (assuming a distance modulus of 18.5mag). We performed Monte
Carlo simulations and produced artificial cluster distributions that
we compared with the real one in order to check how many of the found
cluster pairs and groups can be expected statistically due to chance
superposition on the plane of the sky.
In the cluster catalogue (file "clusters.dat"), identifiers and
remarks, coordinates, object type, maximum and minimum diameter Dmax
and Dmin and the position angle (P.A.) are taken from Bica et al.
(1999, Cat. J/AJ/117/238). For the acronyms of the objects see the
"Nomenclature Notes" section below, where their Table 1 is reproduced.
The acronym used in the OGLE catalogue of star clusters in the LMC
(e.g., LMC0012, (Pietrzynski & Udalski, 2000AcA....50..337P 2000AcA....50..337P) is also
given. The 9th column gives the separations (d) in pc found in the
corresponding group, assuming a distance modulus of 18.5mag. The last
column gives the ages available in the literature; the notes given in
brackets indicate the reference. In some cases, only an age for the
association of which the cluster appears to be part is found. If so, a
corresponding remark is given in brackets.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 237 1126 Catalogue of the LMC multiple clusters (table 6)
refs.dat 144 40 References
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See also:
J/AJ/117/238 : LMC extended catalog (Bica+, 1999)
Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Group Group number
5- 14 A10 --- Cluster Name of the cluster or of the star (1)
16- 67 A52 --- Names Names and remarks (1)
69- 70 I2 h RAh Right ascension (J2000.0)
72- 73 I2 min RAm Right ascension (J2000.0)
75- 76 I2 s RAs Right ascension (J2000.0)
79 A1 --- DE- Declination sign (J2000.0)
80- 81 I2 deg DEd Declination (J2000.0)
83- 84 I2 arcmin DEm Declination (J2000.0)
86- 87 I2 arcsec DEs Declination (J2000.0)
90- 91 A2 --- Type [CAN ] Cluster type (2)
94- 97 F4.2 arcmin DiamMax Maximum diameter of the cluster
100-103 F4.2 arcmin DiamMin Minimum diameter of the cluster
106-108 I3 deg PA ? Position angle
115-118 F4.1 pc Sep Separation in the group
122 A1 --- l_Age Limit flag on Age
123-128 F6.1 Myr Age ? One of the possible ages of the cluster
129 A1 --- u_Age [?] Uncertainty flag on Age
130-134 F5.1 Myr e_Age ? rms uncertainty on Age
135 A1 --- --- [-/] Interval or "two-values" flag
136-141 F6.1 Myr Age2 ? Upper value of Age if interval (-) or
other possible Age value (/)
143-145 A3 --- r_Age References for the Age
147-156 A10 --- n_Age Remarks for Age
157-248 A92 --- Ages ? Other values, remarks and references of
the cluster ages, separated by commas (3)
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Note (1): Different names are separated by commas.
See the "Nomenclature Notes" section below for details.
Note (2): Type:
C: star cluster
A: association
N: emission nebula
Note (3): The method of age determination is indicated in brackets
within the reference list
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1 A1 --- Ref Reference code
3- 21 A19 --- BibCode BibCode
23- 43 A21 --- Aut Author's name
45-144 A100 --- Com Comments
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Nomenclature Notes:
BCDSP6 = BCDSP 6 in Simbad
BHnnCn = Not in Simbad
BMnnn = BMG nnnn in Simbad
BRHTnnn = BRHT nnn in Simbad
BSDLnnnn = BSDL nnnn in Simbad
Cn = [H75] n in Simbad
ESOnnSCnnn = ESO nn- nnn in Simbad
H1 = [H60b] 1 in Simbad
H80Fn-nn = Hodge, 1980AJ.....85..423H 1980AJ.....85..423H, Not in Simbad
HTn = [HT83] n in Simbad
H88-nn = H88 nn in Simbad
HDnnnnnn = HD nnnnnn in Simbad
HDEnnnnnn = HDE nnnnnn in Simbad
HSnnnn = [HS66] nnnn in Simbad
ICnnnn = IC nnnn in Simbad
KMHKnnnn = KMHK nnnn in Simbad
KMK88-nn = KMK88 nn in Simbad
LMC DEMnnnn, LMC-DEMnnnn = DEM L nnn in Simbad
LMC Nnnnn, LMC-Nnnnn = LHA 120-N nnn in Simbad
LMC Snn, LMC-Snn = LHA 120-S nn in Simbad
LMCnnnn = Not in Simbad
LT-beta = [LT84] bet in Simbad
LT-delta = [LT84] del in Simbad
LWnnn = LW nnn in Simbad
NGCnnnn = NGC nnnn in Simbad
OHSCnn = OHSC nn in Simbad
Rob1 = Not in Simbad
SESG2 = SESG C2 in Simbad
Sk-66o36 = SK -66 36 in Simbad
SLnnnn = [SL63] nnnn in Simbad
U1, U2 = Not in Simbad
ZHT5 = ZHT AN 5 in Simbad
Table 1 of Bica et al., 1999AJ....117..238B 1999AJ....117..238B
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Acronym Type Reference
------------------------------------------------------------------------
LMC-N N Henize 1956ApJS....2..315H 1956ApJS....2..315H
H C Hodge 1960ApJ...131..351H 1960ApJ...131..351H
SL C Shapley & Lindsay 1963IrAJ....6...74S 1963IrAJ....6...74S
LW C Lynga & Westerlund 1963MNRAS.127...31L 1963MNRAS.127...31L
HS C Hodge & Sexton 1966AJ.....71..363H 1966AJ.....71..363H
U C Hodge & Sexton 1966AJ.....71..363H 1966AJ.....71..363H
LH A Lucke & Hodge 1970AJ.....75..171L 1970AJ.....75..171L
Rob C Robertson 1974A&AS...15..261R 1974A&AS...15..261R
LMC-DEM N Davies et al. 1976MmRAS..81...89D 1976MmRAS..81...89D
C C Hodge 1975IrAJ...12...77H 1975IrAJ...12...77H
H80-F C Hodge 1980AJ.....85..423H 1980AJ.....85..423H
SGshell-LMC N, A Meaburn 1980MNRAS.192..365M 1980MNRAS.192..365M
Shapley- A, N C van den Bergh 1981A&AS...46...79V 1981A&AS...46...79V
SNR N Mathewson et al. 1983ApJS...51..345M 1983ApJS...51..345M
HT N Heydari-Malayeri & Testor 1983A&A...118..116H 1983A&A...118..116H
LT- C Lortet & Testor 1984A&A...139..330L 1984A&A...139..330L
SNR N Mathewson et al. 1984ApJS...55..189M 1984ApJS...55..189M
SNR N Mathewson et al. 1985ApJS...58..197M 1985ApJS...58..197M
HNT NC Heydari-Malayeri et al. 1987A&A...184..300H 1987A&A...184..300H
M-OB C, A Melnick 1987IAUS..121..545M 1987IAUS..121..545M
KMK88- C Kontizas et al. 1988AJ.....96.1625K 1988AJ.....96.1625K
H88- C Hodge 1988PASP..100.1051H 1988PASP..100.1051H
BH C Bhatia & Hatzidimitriou 1988MNRAS.230..215B 1988MNRAS.230..215B
OHSC C Olszewski et al. 1988AJ.....95...84O 1988AJ.....95...84O
BM A Bhatia & MacGillivray 1989A&A...211....9B 1989A&A...211....9B
KMHK C Kontizas et al. 1990A&AS...84..527K 1990A&AS...84..527K
Cat. VII/183
IDK A Irwin et al. 1990AJ.....99..191I 1990AJ.....99..191I
BRHT C Bhatia et al. 1991A&AS...87..335B 1991A&AS...87..335B
BD A Battinelli & Demers 1992AJ....104.1458B 1992AJ....104.1458B
BCD C Bica et al. 1992AJ....103.1859B 1992AJ....103.1859B
SNR N Smith et al. 1994AJ....108.1266S 1994AJ....108.1266S
KKDAB- A Kontizas et al. 1994A&AS..107...77K 1994A&AS..107...77K
BCDSP C, A Bica et al. 1996ApJS..102...57B 1996ApJS..102...57B
ZHT C Zaritsky et al. 1997AJ....114.1002Z 1997AJ....114.1002Z
ZHT-SP C Zaritsky et al. 1997AJ....114.1002Z 1997AJ....114.1002Z
SESG C Santiago et al. 1998MNRAS.295..860S 1998MNRAS.295..860S
BSDL C, N, A Bica et al. 1999AJ....117..238B 1999AJ....117..238B
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History: Some name corrections made in cluster.dat file on 01-Apr-2003
Acknowledgements: Andrea Dieball
(End) Patricia Bauer [CDS] 10-Jun-2002