SIMBAD references

1999A&A...352L..69B - Astronomy and Astrophysics, volume 352, L69-72 (1999/12-1)

Low-mass stars in the massive HII region NGC 3603. Deep NIR imaging with ANTU/ISAAC.

BRANDL B., BRANDNER W., EISENHAUER F., MOFFAT A.F.J., PALLA F. and ZINNECKER H.

Abstract (from CDS):

We have observed NGC 3603, the most massive visible HII region known in the Galaxy, with ANTU(VLT1)/ISAAC in the near-infrared (NIR) Js, H, and Ks-bands. Our observations are the most sensitive observations made to date of this dense starburst region, allowing us to investigate with unprecedented quality its low-mass stellar population. Our mass limit to stars detected in all three bands is 0.1M for a pre-main sequence star of age 0.7Myr. The overall age of the pre-main sequence stars in the core region of NGC 3603 has been derived from isochrone fitting in the colour-magnitude diagram, leading to 0.3-1.0Myr. The NIR luminosity functions show that the cluster is populated in low-mass stars at least down to 0.1M. Our observations clearly show that sub-solar mass stars do form in massive starbursts.

Abstract Copyright:

Journal keyword(s): telescopes - stars: Hertzsprung-Russel (HR) and C-M diagrams - stars: pre-main sequence - ISM: HII regions - galaxies: starburst

Simbad objects: 5

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2020.08.09-05:11:26

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