Propiedades infrarrojas de regiones de formación estelar

HUGO P. SALDAÑO; PAOLO PERSI; MAURICIO TAPIA; MIGUEL ROTH; MERCEDES GOMEZ

Tafí del Valle, Tucuman

Jornada; Segundas Jornadas de Astrof ́ısica Estelar; 2011

Asociación Argentina de Astronomía

We present an analysis of near-IR images, obtained with the instrument PANIC at the Baade telescope (Las Campanas), of the star-forming regions associated with the sources IRAS 12272−6240 and IRAS 17149−3916, selected from the southern sky survey of sub-mm cores of Beltran et al. (2006). We identify two young clusters associated with each one of the IRAS sources. The near-IR color-color and color-magnitude diagrams are used to detect young stars with masses between 0.7 and 30 M⊙ . We find ∼ 190 and ∼ 285 sources in the IRAS 12272−6240 and IRAS 17149−3916 regions, showing near-IR excesses due to circumstellar material and that probably belong to the identified young clusters.