Imaging study of NGC 3372, the Carina nebula – III. The properties of G287.47−0.54 (Tr 14-N4), an embedded young cluster and its associated H2 emission

New deep broad- and narrow-band (JHK and Br γ at 2.17 µm and H2 at 2.12µm) nearinfrared (near-IR) images of the mid-IR source G287.47−0.54 (Tr14-N4) taken with the Baade Magellan telescope are presented and analysed along with archive 3.6–8µm Spitzer images. The analysis of these data demonstrates the presence of a compact (r ∼ 23 arcsec, 0.3 pc), embedded IR cluster with at least 72 young members. The colour–magnitude diagram of the cluster suggests an age of approximately 10 5 years, consistent with the large fraction (≥32 per cent) of embedded sources found to show significant excess emission at λ> 2µm. The two youngest and most luminous sources are located close to the cluster nucleus. The properties of their spectral energy distributions (SEDs) indicate that these are Class I young