Methods to Identify Star Clusters in The Large Magellanic Cloud (LMC)

  • Prasantha K Nayak Indian Institute of Astrophysics, Bangalore
  • Annapurni Subramaniam Indian Institute of Astrophysics, Bangalore
Keywords: Large Magellanic Cloud, star cluster, isochrone, star formation history, colour magnitude diagram

Abstract

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.

Author Biographies

Prasantha K Nayak, Indian Institute of Astrophysics, Bangalore

Indian Institute of Astrophysics, Bangalore

Annapurni Subramaniam, Indian Institute of Astrophysics, Bangalore

Indian Institute of Astrophysics, Bangalore

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Published
2018-01-01
Section
Research Articles