This short report is concerned with the well known and not yet satisfactorily answered problem of the existence of two well distinct typical mass scales of primordial halo objects: solar size objects (halo field stars) and globular cluster size objects (10^5 solar masses and more). A likely possibility is that almost all the gaseous content of the halo fragmented into massive clouds, which, in their turn, recycled part of their gas to the environment in either a quiescent either a violent way. The modes and quantity of mass loss depends on thermodynamic properties of gas clouds, determined, in a zero-metal environment, mainly by hydrogenic components evolution and influence on the equation of state. It is logical to expect that, due to the different dynamical and thermodynamical conditions of the recycled gas, another typical fragmenting mass scale is settled.

The role of hydrogen on mass loss from proto-globular clusters / CAPUZZO DOLCETTA, Roberto Angelo. - In: MEMORIE DELLA SOCIETÀ ASTRONOMICA ITALIANA. - ISSN 0037-8720. - STAMPA. - 69:(1998), pp. 505-507. (Intervento presentato al convegno “Molecular Hydrogen in the Early Universe tenutosi a Firenze (Italy) nel 4-6 December 1997).

The role of hydrogen on mass loss from proto-globular clusters

CAPUZZO DOLCETTA, Roberto Angelo
1998

Abstract

This short report is concerned with the well known and not yet satisfactorily answered problem of the existence of two well distinct typical mass scales of primordial halo objects: solar size objects (halo field stars) and globular cluster size objects (10^5 solar masses and more). A likely possibility is that almost all the gaseous content of the halo fragmented into massive clouds, which, in their turn, recycled part of their gas to the environment in either a quiescent either a violent way. The modes and quantity of mass loss depends on thermodynamic properties of gas clouds, determined, in a zero-metal environment, mainly by hydrogenic components evolution and influence on the equation of state. It is logical to expect that, due to the different dynamical and thermodynamical conditions of the recycled gas, another typical fragmenting mass scale is settled.
1998
“Molecular Hydrogen in the Early Universe
hydrogen: molecular - mass loss - clusters:globular
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
The role of hydrogen on mass loss from proto-globular clusters / CAPUZZO DOLCETTA, Roberto Angelo. - In: MEMORIE DELLA SOCIETÀ ASTRONOMICA ITALIANA. - ISSN 0037-8720. - STAMPA. - 69:(1998), pp. 505-507. (Intervento presentato al convegno “Molecular Hydrogen in the Early Universe tenutosi a Firenze (Italy) nel 4-6 December 1997).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/502121
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