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 H-2 emission
Por:
Tapia, M, Roth, M, Bohigas, J, Persi, P
Publicada:
1 sep 2011
Resumen:
New deep broad-and narrow-band (JHK and Br gamma at 2.17 mu m and H-2 at 2.12 mu m) near-infrared (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 3.6-8 mu m Spitzer images. The analysis of these data demonstrates the presence of a compact (r similar to 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 lambda > 2 mu m. 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 stellar objects (YSOs) with masses in the range 7-9 M-circle dot and luminosities between 400 and 800 L-circle dot. We derive the presence of a tilted (i similar to 40
Filiaciones:
Tapia, M:
Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22800, Baja California, Mexico
Bohigas, J:
Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22800, Baja California, Mexico
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