Sub-arcsec resolution near-infrared images of the Cederblad 110 region

We present the results of deep (K-s = 18.9) sub-arcsec resolution (0.3") im aging observations of the Cederblad 110 region in the Chamaeleon I dark clo ud. This region (roughly 5' x 5') is characterized by the presence of six I SOCAM-detected young stellar objects (YSOs). Our images have recovered all these sources at near-infrared (near-IR) wavelengths. Ced 110 IRS4, the bri ghtest object in the region, is associated with a remarkable near-IR bipola r nebulosity. Ced 110 IRS6 is resolved in a double system IRS6a and IRS6b w ith a separation of similar to 2" (similar to 320 AU at the distance of the Cha I cloud). We have combined 1.3 mm, far and mid-IR fluxes from the lite rature with our JHK data and obtained the spectral energy distributions (SE Ds) 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 sy mmetric dusty envelope, using the DUSTY code. These objects are clear Class I sources of the cloud. Finally, we report the detection of three new obje cts 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 m asses suggest that they are candidate young brown dwarfs of Chamaeleon I.