J/MNRAS/430/676 Massive clusters in the LMC (Baumgardt+, 2013)
The star cluster formation history of the LMC.
Baumgardt H., Parmentier G., Anders P., Grebel E.K.
<Mon. Not. R. Astron. Soc., 430, 676-685 (2013)>
=2013MNRAS.430..676B 2013MNRAS.430..676B
ADC_Keywords: Magellanic Clouds ; Associations, stellar
Keywords: galaxies: kinematics and dynamics - Magellanic Clouds -
galaxies: star clusters: general
Abstract:
The Large Magellanic Cloud (LMC) is one of the nearest galaxies to us
and is one of only few galaxies where the star formation history can
be determined from studying resolved stellar populations. We have
compiled a new catalogue of ages, luminosities and masses of LMC star
clusters and used it to determine the age distribution and dissolution
rate of LMC star clusters. We find that the frequency of massive
clusters with masses M>5000M☉ is almost constant between
10 and 200Myr, showing that the influence of residual gas expulsion is
limited to the first 10Myr of cluster evolution or clusters less
massive than 5000M☉.
Description:
We use four recent compilations of LMC star cluster parameters to
derive a combined catalogue for LMC clusters. Our first catalogue is
the recent work of Glatt et al. (2010, Cat. J/A+A/517/A50), who used
data from the MCPS together with isochrone fitting to derive ages and
luminosities for 1193 populous star clusters in a 64deg2 area of
the LMC.
The second data set that we use is the catalogue of Pietrzynski &
Udalski (2200, Cat. J/AcA/50/337), who used BVI data from the OGLE II
microlensing experiment (Udalski et al., 1998, Cat, J/AcA/48/147)
together with isochrone fitting to derive ages of about 600 star
clusters which are located in the central parts of the LMC and are
younger than 1.2Gyr.
Our third catalogue is the cluster catalogue presented by Hunter et
al. (2003AJ....126.1836H 2003AJ....126.1836H). The Hunter et al. catalogue contains data
for about 746 different LMC clusters, limited to the inner regions of
the LMC and to absolute luminosities brighter than MV=-3.5.
In order to increase the accuracy of the age and mass determinations
especially for bright clusters, we also include age determinations
from the literature. In particular, we use the ages recently derived
by Milone et al. (2009A&A...499..755V 2009A&A...499..755V) for massive intermediate-age
star clusters from colour-magnitude fitting and the age data
compiled by Mackey & Gilmore (2003MNRAS.338...85M 2003MNRAS.338...85M) for 53 massive LMC
clusters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 75 320 Properties of massive LMC clusters
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See also:
J/AcA/48/147 : OGLE SMC BVI photometry (Udalski+ 1998)
J/AcA/50/337 : OGLE LMC star clusters (Pietrzynski+, 2000)
J/A+A/517/A50 : Young SMC/LMC star clusters ages + luminosities (Glatt+, 2010)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name Cluster name
16 I1 h RAh Right ascension (J2000)
18- 19 I2 min RAm Right ascension (J2000)
21- 24 F4.1 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 36 F4.1 arcsec DEs Declination (J2000)
38- 43 F6.2 mag VMAG [-14/-3] Absolute V magnitude
45- 49 F5.2 [yr] logAge Age
51- 54 F4.2 [yr] e_logAge Uncertainty on Age
56- 59 F4.2 [Msun] logM [3.7/5.9] Mass
61 I1 --- Ref [1/4] Data source (1)
63- 75 A13 --- OName Alternative Name
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Note (1): Sources for the data as follows:
1 = Glatt et al. (2010, Cat. J/A+A/517/A50)
2 = Pietrzynski and Udalski (2000, Cat. J/AcA/50/337)
3 = Popescu et al. (2012, Cat. J/ApJ/751/122)
4 = Additional clusters from the literature. Absolute luminosities for
the clusters from Pietrzynski and Udalski (2000, Cat. J/AcA/50/337)
are taken from Hunter et al. (2003AJ....126.1836H 2003AJ....126.1836H)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Mar-2014