J/MNRAS/403/996 Clusters and associations in SMC and LMC (Bonatto+, 2010)
Hierarchical structures in the Large and Small Magellanic clouds.
Bonatto C., Bica E.
<Mon. Not. R. Astron. Soc., 403, 996-1008 (2010)>
=2010MNRAS.403..996B 2010MNRAS.403..996B
ADC_Keywords: Magellanic Clouds ; Associations, stellar ; Clusters, open ;
Nebulae ; H II regions ; Morphology
Keywords: Magellanic Clouds
Abstract:
We investigate the degree of spatial correlation among extended
structures in the Large Magellanic Cloud (LMC) and Small Magellanic
Cloud (SMC). To this purpose, we work with subsamples characterized by
different properties such as age and size, taken from the updated
catalogue of Bica et al. (2008, Cat. J/MNRAS/389/678), or gathered in
the present work. The structures are classified as star clusters or
non-clusters (basically, nebular complexes and their stellar
associations).
Description:
Properties of the updated MC catalogue are fully discussed in Bica et
al. (2008, Cat. J/MNRAS/389/678). We recall here the basic statistical
properties. Taking the LMC, SMC and the Bridge together, the updated
catalogue contains, respectively, 3740 classical star clusters, 3326
associations, 1445 emission nebulae and 794 HI shells and supershells.
With the recent additions and cross-identifications, Bica et al.
(2008, Cat. J/MNRAS/389/678) contain about 12 per cent more objects
than those in Bica et al. (1999, Cat. J/AJ/117/238) and Bica & Dutra
(2000, Cat. J/AJ/119/1214) together.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 238 690 Old SMC and LMC clusters from CMDs, COLours and
PLAte inspections
refs.dat 101 36 References
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See also:
J/AJ/117/238 : LMC extended catalog (Bica+, 1999)
J/AJ/119/1214 : Census of star clusters in the SMC (Bica+, 2000)
J/MNRAS/389/678 : Extended objects in Magellanic Clouds (Bica+, 2008)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- MC LMC or SMC
5- 48 A44 --- Name Designation(s)
50- 51 I2 h RAh Right ascension (J2000)
53- 54 I2 min RAm Right ascension (J2000)
56- 57 I2 s RAs Right ascension (J2000)
59 A1 --- DE- Declination sign (J2000)
60- 61 I2 deg DEd Declination (J2000)
63- 64 I2 arcmin DEm Declination (J2000)
66- 67 I2 arcsec DEs Declination (J2000)
69- 70 A2 --- Class [AC ] Class (A: association, C: star cluster)
72- 75 F4.2 arcmin Dmaj Major diameter (4)
77- 80 F4.2 arcmin Dmin Minor diameter (4)
82- 84 I3 deg PA ? Position angle (0 = North; 90 = East)
86-110 A25 --- Type Classification (1)
112-123 A12 --- Met1 Method 1 (2)
125 A1 --- l_Age1 Limit flag on Age
126-130 F5.2 [yr] Age1 ? Age for method 1 (log scale)
132-134 A3 --- r_Met1 Reference for method 1 values, in refs.dat file
136 A1 --- --- "("
137 I1 --- n_Met1 ? Note for method 1 (3)
138 A1 --- --- ")"
140-150 A11 --- Met2 Method 2 (2)
151-154 F4.2 [yr] Age2 ? Age for method 2 (log scale)
156-164 A9 --- B-V2 B-V value for method 2
166-168 A3 --- r_Met2 Reference for method 2 values, in refs.dat file
169 A1 --- --- "("
170 I1 --- n_Met2 ? Note for method 2 (3)
171 A1 --- --- ")"
173-183 A11 --- Met3 Method 3 (2)
185-188 F4.2 [yr] Age3 ? Age for method 3 (log scale)
189-197 A9 --- B-V3 (B-V)0 value for method 3
199-201 A3 --- r_Met3 Reference for method 3 values, in refs.dat file
203-205 A3 --- Met4 Method 4 (2)
207-215 A9 --- B-V4 (B-V)0 value for method 4
217-219 A3 --- r_Met4 Reference for method 4 values, in refs.dat file
221-234 A14 --- Com Comments
236-238 A3 --- r_Com Reference for comments, in refs.dat file
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Note (1): "mP," "mT," "m4,", indicate, respectively, a member of a pair,
triple, etc.,
Note (2): Methods from CMDs, COLours and PLAte inspections. Red and Blue
indicate the age class when no value of Age.
Note (3): Notes are numbered as follows:
1 = We cross-identified the SMC cluster catalogue of Rafelski &
Zaristsky (2005, Cat. J/AJ/129/2701) with Bica et al.
(2008, Cat. J/MNRAS/389/678).
We concluded that 12 were clusters were discovered by Rafelski &
Zaristsky (2005, Cat. J/AJ/129/2701). We employ the acronym RZ.
2 = In Bica et al. (2008, Cat. J/MNRAS/389/678) and references
therein the cluster at RA=5:43:03, DE=-62:31:45 (J2000) is
not LW277. This was a new cluster, so we named it BSDL3247.
3 = Although K31 has relatively blue colours in Hunter et al.
(2003AJ....126.1836H 2003AJ....126.1836H) Rafelski & Zaritsky (2005,
Cat. J/AJ/129/2701), it was classified as a red cluster by Bruck
(1976, Occasional Rep. R. Obser., 1, 1).
It is a large low surface brightness cluster contaminated by the
SMC bar, and requires a CMD to establish its nature.
4 = Blue colours were probably caused by relatively bright star
superimposed.
Note (4): not semi-major axes as indicated in the paper
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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- 3 A3 --- Ref Reference code
5- 23 A19 --- BibCode BibCode
25- 48 A24 --- Aut Author's name
49-101 A53 --- Com Comments
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History:
* 24-Sep-2010: From electronic version of the journal
* 21-Apr-2011: dimensions are diameters, not semi-major axes
(see "Note (4)" above)
(End) Patricia Vannier [CDS] 24-Sep-2010