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

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dc.creatorBrandl, B.
dc.creatorBrandner, W.
dc.creatorEisenhauer, F.
dc.creatorMoffat, A. F. J.
dc.creatorPalla, F.
dc.creatorZinnecker, H.
dc.date1999-10-13
dc.date.accessioned2026-07-07T02:33:49Z
dc.date.available2026-07-07T02:33:49Z
dc.descriptionWe have observed NGC 3603, the most massive visible HII region known in the Galaxy, with ANTU(VLT1)/ISAAC in the near-infrared (NIR) J_s, H, and K_s 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 0.1 Mo for a pre-main sequence star of age 0.7 Myr. 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 - 1.0 Myr. The NIR luminosity functions show that the cluster is populated in low-mass stars at least down to 0.1 Mo. Our observations clearly show that sub-solar mass stars do form in massive starbursts.
dc.description5 pages, 3 figures, A&A style. A&A accepted, to appear December 1999
dc.identifierhttps://arxiv.org/abs/astro-ph/9910238
dc.identifierhttp://arxiv.org/abs/astro-ph/9910238
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/15003
dc.subjectAstrophysics
dc.titleLow-mass stars in the massive HII region NGC 3603 - Deep NIR imaging with ANTU/ISAAC
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