Deep Infrared Surveys of Star Formingregions in the MWG and LMC

Astronomy and Astrophysics – Astronomy

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Infrared: Stars, Stars: Formation, Stars: Pre-Main-Sequence

Scientific paper

On behalf of the IRSF/SIRIUS group, I introduce some recent results from our deep near-infrared surveys (J, H and Ks bands, limiting magnitude of Ks=17) toward star forming regions in the Milky Way Galaxy (MWG) and Large Magellanic Cloud (LMC) with the near-infrared camera SIRIUS. We discovered a rich population of low-mass young stellar objects associated with the W3 and NGC 7538 regions in the MWG based on the near-infrared colors and magnitudes. The high sensitivity of our survey enables us to detect intermediate-mass pre-main sequence stars, i.e. HAEBE stars, even in the LMC. We detected many HAEBE candidate stars in the N159/N160 complex star forming region in the LMC with the IRSF 1.4-m telescope. Spatial distributions of the young stellar objects indicate the sequential cluster formation in each star forming region in the complex and large scale (a few × 100 pc) sequential cluster formation over the entire complex.

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