Near-IR Sources in the Cederblad 110 region. (Persi+ 2001)

Details Near-IR Sources in the Cederblad 110 region. (Persi+ 2001) Near-IR Sources in the Cederblad 110 region. (Persi+ 2001)

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33760907p&link_type=abstract

VizieR On-line Data Catalog: J/A+A/376/907. Originally published in: 2001A&A...376..907P

Physics

Stars: Pre-Main Sequence, Photometry: Infrared

Scientific paper

We present the results of deep (Ks=18.9) sub-arcsec reso (0.3") imaging observations of the Cederblad 110 region in the Chamaeleon I dark cloud. This region (roughly 5'x5') is characterized by the presence of six ISOCAM-detected young stellar objects (YSOs). Our images have recovered all these sources at near-infrared (near-IR) wavelengths. Ced 110 IRS4, the brightest object in the region, is associated with a remarkable near-IR bipolar nebulosity. Ced 110 IRS6 is resolved in a double system IRS6a and IRS6b with a separation of ~2" (~320AU at the distance of the Cha I cloud). We have combined 1.3 mm, far and mid-IR fluxes from the literature with our JHK data and obtained the spectral energy distributions (SEDs) for three (IRS4, IRS6a and ISO-ChaI86) of the six ISOCAM sources in the region. We modelled the SEDs of IRS6a and ISO-ChaI86 with a spherically symmetric dusty envelope, using the DUSTY code. These objects are clear Class I sources of the cloud. Finally, we report the detection of three new objects in this region (NIR 72, 84 and 89) with significant near-IR excess. If these sources are associated with the cloud, the derived luminosities and masses suggest that they are candidate young brown dwarfs of Chamaeleon I. (1 data file).

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