The young massive stellar cluster associated to RCW121

Simple item page
dc.creatorRoman-Lopes, Alexandre
dc.creatorAbraham, Zulema
dc.date2006-01-04
dc.date.accessioned2026-07-07T11:25:09Z
dc.date.available2026-07-07T11:25:09Z
dc.descriptionWe report NIR broad and narrow band photometric observations in the direction of the IRAS17149-3916 source that reveal the presence of a young cluster of massive stars embedded in an HII region coincident with RCW121. These observations, together with published radio data, MSX and Spitzer images were used to determine some of the physical parameters of the region. We found 96 cluster member candidates in an area of about 1.5 x 2.0 square arcmin, 30% of them showing excess emission in the NIR. IRS 1, the strongest source in the cluster with an estimated spectral type of O5V-O6V ZAMS based on the color-magnitude diagram, is probably the main ionizing source of the HII region detected at radio wavelengths. Using the integrated Brgamma and the 5 GHz flux densities, we derived a mean visual extinction AV=5.49 magnitudes. From the observed size of the Brgamma extended emission, we calculated the emission measure E and the electron density ne, characteristic of compact HII regions.
dc.description18 pages, 8 figures, accepted for publication on AJ (February/2006)
dc.identifierhttps://arxiv.org/abs/astro-ph/0601087
dc.identifierhttp://arxiv.org/abs/astro-ph/0601087
dc.identifierAstron.J.131:951-959,2006
dc.identifierdoi:10.1086/499307
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195422
dc.subjectAstrophysics
dc.titleThe young massive stellar cluster associated to RCW121
dc.typetext

Files

Collections

arXiv