J/A+A/586/A41 LMC star clusters catalog (Palma+, 2016)
Catalogue of Large Magellanic Cloud star clusters observed in the
Washington photometric system.
Palma T., Gramajo L.V., Claria J.J., Lares M., Geisler D., Ahumada A.V.
<Astron. Astrophys., 586, A41-41 (2016)>
=2016A&A...586A..41P 2016A&A...586A..41P (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Associations, stellar ; Abundances, [Fe/H]
Keywords: techniques: photometric - Magellanic Clouds -
galaxies: star clusters: general
Abstract:
The main goal of this study is to compile a catalogue of the
fundamental parameters of a complete sample of 277 star clusters (SCs)
of the Large Magellanic Cloud (LMC) observed in the Washington
photometric system. A set of 82 clusters was recently studied by our
team. All the clusters' parameters such as radii, deprojected
distances, reddenings, ages, and metallicities were obtained by
applying essentially the same procedures, which are briefly described
here. We used empirical cumulative distribution functions to examine
age, metallicity and deprojected distance distributions for different
cluster subsamples of the catalogue. Our new sample of 82 additional
clusters represents about a 40% increase in the total number of LMC
SCs observed to date in the Washington photometric system. In
particular, we report here the fundamental parameters obtained for the
first time for 42 of these clusters. We found that single LMC SCs are
typically older than multiple SCs. Both single and multiple SCs
exhibit asymmetrical distributions in log (age). We compared cluster
ages derived through isochrone fittings obtained using different
models of the Padova group. Although ages obtained using recent
isochrones are consistent in general terms, we found that there is
some disagreement in the obtained values and their uncertainties.
Description:
We have compiled a catalogue including a total of 277 LMC SCs studied
in the Washington system. All the photometric observations of these
SCs were carried out at Cerro Tololo Inter-American Observatory (CTIO,
Chile), using the Wahington C and T1 filters (Canterna 1976) and the
Kron-Cousins R filter.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sample.dat 174 277 LMC star clusters observed in the Washington
photometric system (tables A1 and A2 of the paper)
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See also:
VII/183 : The Cluster System of the LMC (Kontizas+ 1990)
J/ApJ/527/199 : HST observations of old clusters in the LMC (Johnson+, 1999)
J/AcA/50/337 : OGLE LMC star clusters (Pietrzynski+, 2000)
J/A+A/405/111 : LMC Survey of Young Stellar Systems (Gouliermis+, 2003)
J/MNRAS/389/678 : Extended objects catalogue in Magellanic Clouds (Bica+, 2008)
J/MNRAS/403/996 : Clusters and associations in SMC and LMC (Bonatto+, 2010)
J/A+A/540/A58 : CT1T2 photometry of 26 LMC cluster (Piatti, 2012)
J/ApJ/749/124 : Spectroscopy on LMC clusters (Colucci+, 2012)
J/ApJ/751/122 : Ages and masses for 920 LMC clusters (Popescu+, 2012)
J/MNRAS/436/136 : Ages and masses of LMC clusters (de Grijs+, 2013)
J/A+A/555/A131 : Fundamental parameters of LMC star clusters (Palma+, 2013)
Byte-by-byte Description of file: sample.dat
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Bytes Format Units Label Explanations
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1- 56 A56 --- Clusters Star cluster names (1)
58- 59 I2 h RAh Right ascension (J2000)
61- 62 I2 min RAm Right ascension (J2000)
64- 65 I2 s RAs Right ascension (J2000)
67 A1 --- DE- Declination sign (J2000)
68- 69 I2 deg DEd Declination (J2000)
71- 72 I2 arcmin DEm Declination (J2000)
74- 75 I2 arcsec DEs Declination (J2000)
77- 83 F7.3 deg GLON Galactic longitude
85- 91 F7.3 deg GLAT Galactic latitude
93- 96 F4.2 arcmin r Radius, obtained from Bica et al.
(2008, Cat. J/MNRAS/389/678) (2)
99-102 F4.2 arcmin Rad ?=- Cluster radius (3)
103 A1 --- --- [/]
104-106 F3.1 arcmin Rad2 ? Second value of Radius
108-111 F4.1 deg Distdp ?=- angular deprojected distance (4)
113-117 F5.3 mag E(B-V) Cluster reddening
119-122 F4.2 Gyr AgeI ?=- Age or lower value of Age interval
determined from isochrone fittings
123 A1 --- --- [-]
124-127 F4.2 Gyr B_AgeI ? Upper value of AgeI interval
129-132 F4.2 Gyr e_AgeI ? rms uncertainty on AgeI
134-138 F5.2 [-] [Fe/H]I ?=- Metallicity determined from isochrone
fittings
140-143 F4.2 Gyr AgeII ?=- Age derived from the δT1 method
(±0.30GYr)
144 A1 --- --- [/]
145-148 F4.2 Gyr AgeII2 ? Second value of AgeII
150-154 F5.2 [-] [Fe/H]II ?=- Metallicity derived from the δT1
method (±0.3dex)
156-163 A8 --- Notes Notes (5)
164-174 A11 --- Ref References to the works from which we took
the fundamental parameters determined by
other authors in the Washington photometric
system (6)
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Note (1): Cluster identifications from
SL : Shapley & Lindsay (1963IrAJ....6...74S 1963IrAJ....6...74S, [SL63] NNN)
LW : Lynga & Westerlund (1963MNRAS.127...31L 1963MNRAS.127...31L, LW NNN)
HS : Hodge & Sexton (1966AJ.....71..363H 1966AJ.....71..363H, [HS66] NNNA)
C : Hodge (1975IrAJ...12...77H 1975IrAJ...12...77H, [H75] NN)
H88 : Hodge (1988PASP..100.1051H 1988PASP..100.1051H, H88 NNN)
OHSC : Olszewski et al. (1988AJ.....95...84O 1988AJ.....95...84O, OHSC NN)
KMK : Kontizas et al. (1988AJ.....96.1625K 1988AJ.....96.1625K, KMK88 NN)
KMHK : Kontizas et al. (1990A&AS...84..527K 1990A&AS...84..527K, KMHK NNNN)
BRHT : Bhatia et al. (1991A&AS...87..335B 1991A&AS...87..335B, BRHT NNa)
LOGLE : Pietrzyski et al. (1998AcA....48..175P 1998AcA....48..175P, OGLE-CL SMC NNN,
1999AcA....49..521P 1999AcA....49..521P, OGLE-CL LMC NNN)
BSDL : Bica et al. (1999AJ....117..238B 1999AJ....117..238B, BSDL NNNN)
Note (2): These core radii constitute half of the mean apparent central
diameters obtained by computing the average between the major (a) and
minor (b) axes.
Note (3): distance r in arcminutes from the cluster's centre up to the region
where the stellar density equals that of the background.
Note (4): distance from the LMC optical centre to the cluster.
Note (5): Parameters obtained also by
a: Glatt et al. (2010, Cat. J/A+A/517/A50),
b: Popescu et al. (2012, Cat. J/ApJ/751/122), and
c: Pietrzyski & Udalski (2000, Cat. J/AcA/50/337).
m: The letter m indicates that the cluster belongs to a binary or multiple
system.
Note (6): References as follows:
1 = Piatti (2011MNRAS.418L..40P 2011MNRAS.418L..40P)
2 = Geisler et al. (1997AJ....114.1920G 1997AJ....114.1920G)
3 = Bica et al. (1998, Cat. J/AJ/116/723)
4 = Choudhury et al. (2015AJ....149...52C 2015AJ....149...52C)
5 = Palma et al. (2013, Cat. J/A+A/555/A131)
6 = Piatti et al. (2009, Cat. J/A+A/501/585)
7 = Palma et al. (2015MNRAS.450.2122P 2015MNRAS.450.2122P)
8 = Piatti (2014MNRAS.440.3091P 2014MNRAS.440.3091P)
9 = Piatti (2012, Cat. J/A+A/540/A58)
10 = Piatti et al. (2003MNRAS.343..851P 2003MNRAS.343..851P)
11 = Piatti et al. (2003MNRAS.344..965P 2003MNRAS.344..965P)
12 = Geisler et al. (2003MNRAS.341..771G 2003MNRAS.341..771G)
13 = Palma et al. (2011, Boletin AAA, 54, 195)
14 = Piatti et al. (2011, Cat. J/PASP/123/519)
15 = Piatti et al. (2002MNRAS.329..556P 2002MNRAS.329..556P)
16 = Geisler (1987AJ.....93.1081G 1987AJ.....93.1081G)
17 = present work
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Apr-2016