Methods to Identify Star Clusters in The Large Magellanic Cloud (LMC)
DOI:
https://doi.org/10.12723/mjs.44.6Keywords:
Large Magellanic Cloud, star cluster, isochrone, star formation history, colour magnitude diagramAbstract
The Large Magellanic Cloud (LMC) hosts a few thousand star clusters which are ideal tools to study stellar evolution, star formation history, cluster formation and dissolution processes in the galaxy. Although many surveys (like IRSF, OGLE II etc) of the LMC have been carried out, a large fraction of clusters, mainly poor ones are yet to be identified. Also, the parameters of already identified clusters are not well studied. In this context, we have tried to explore that among the available and upcoming surveys which survey (optical/NIR) can be used to efficiently detect and study the clusters in the LMC. We have found that the available OGLE-III optical data is ideal for this purpose, but only for young clusters, whereas Deeper optical data from DECAM survey, OGLE-IV and skymapper are ideal to study poor and old clusters. We have also found that one can combine the ongoing VISTA data with upcoming optical data (OGLE IV) and estimate the cluster parameters more accurately.
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[11] Pietrzynski, G. and Udalski, A.,“The Optical Gravitational Lensing Experiment. Ages of about 600 Star Clusters from the LMC,”Acta Astron., vol. 50, pp. 337–354, 2000.
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[15] Saha, A., Olszewski, E. W., Brondel, B., Olsen, K., Knezek, P., Harris, J., Smith, C., Subramaniam, A., Claver, J., Rest, A.,
Seitzer, P., Cook, K. H., Minniti, D. and Suntzeff, N. B., “First Results from the NOAO Survey of the Outer Limits of the Magellanic Clouds,” Astron. J., vol. 140, pp. 1719–1738, 2010.
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Large Mag,” 2001.
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[20] Zaritsky, D., Harris, J., Thompson, I.B. and Grebel, E.K., The Magellanic Clouds photometric survey: The Large Magellanic
Cloud stellar catalog and extinction map. The Astronomical Journal, vol. 128, no. 4, pp. 1606, 2004.
[21] Zaritsky, D., Harris, J., Thompson, I.B., Grebel, E.K. and Massey, P., “The magellanic clouds photomtric survey: the small magellanic
cloud stellar catalog and extinction map,” The Astronomical Journal, vol. 123, no. 2, pp. 855, 2002.
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2018-01-01
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