G351: a detailed study for (proto)cluster formation

The initial steps of star and cluster formation are believed to be tightly linked to the evolution of interstellar filaments. In contrast to lower-mass filaments, mass accretion from large scales in the form of sub-filaments seems to play a key role for the formation
of their high-mass counterparts. The build up of massive filaments is still poorly understood and only a few examples are known to date.
G351.77-0.51 is the youngest and most massive filament in the ATLASGAL survey of the Galactic plane within 1 kpc and it exhibits a remarkable large-scale network of filamentary structures seen in extinction at 8micron. I will present a detailed study of the kinematics of G351.77 and of the network of sub-filaments converging based on C18O APEX data.

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Oggi Astro Chiacchiere! è un incontro informale tra il personale dell’Osservatorio Astronomico di Cagliari (staff, postdoc e studenti), che ha lo scopo di discutere argomenti di carattere prevalentemente scientifico, tecnologico, informativo sulle attività dell’Osservatorio. L’incontro si tiene solitamente il Martedì, alle ore 11:30, nell’Auditorium dell’Osservatorio Astronomico di Cagliari. Per informazioni e/o contributi contattare vvacca@oa-cagliari.inaf.it e surcis@oa-cagliari.inaf.it