Obiettivo The way in which stars are born is critical to many aspects of our Universe, from the structure of galaxies to the building of planets. But we still know very little about star formation. The fact that only a tiny fraction of the clouds we now see will collapse into stars has prolonged the era of star formation in our Galaxy, giving us an appearance of youth despite our age. Some possible causes for the on-going star formation are explored in this proposed project.Our objective is based on the fact that all very young stars or protostars strike back. They interact dynamically with their maternal cloud. This feedback of momentum and energy takes place through twinjets and collimated outflows. We wish to answer three questions. First, what do the jets carry away with them from the protostars? Second, how do they re-process and re-shape the material directly in their paths? Third, what local and global influence can they have on the efficiency of star formation?To approach these questions, we require some new observing equipment, new computers for data handling and support for contemplation and collaboration.We plan observational campaigns at the two telescopes in Russia and Byurakan. These will provide optical data of the structure and motions of the atomic gas.We will also propose infrared observations of the same fields from ground and space-based telescopes accessible to the INTAS partners. Combining data sets, we will derive or constrain the spatial and spectral distributions of physical quantities Supporting numerical simulations and theoretical analysis will be carried out by the Armagh team to test plausible physical and dynamical scenarios.Our targets are as follows. First, several well-known HH Objects will be studied in high detail. Our spectroscopic data combined with HST and VLT sub-arcsecond imaging will permit unprecedented quantitative modelling, rarely undertaken since the works of Solf and Boehm 15 years ago. Second, the HH Flows located near Cometary Nebula will be studied in order to determine the `spin' properties: do the outflows extract angular momentum from either the circumstellar disk or protostar? Evidence can be contained from radial velocities and twisted spatial structure. Third, we will examine specific molecular clouds, exploring the extinction and outflow locations to study how cloud evolution is influenced by outflows, including the jet-triggering of star formation in nearby clumps, alignment properties and the specific sources of turbulent energy. Programma(i) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Argomento(i) OPEN - OPEN Call Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore ARMAGH OBSERVATORY Contributo UE Nessun dato Indirizzo COLLEGE HILL ARMAGH Regno Unito Mostra sulla mappa Costo totale Nessun dato Partecipanti (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Astronomy Max-Planck-Institute for Astronomy Germania Contributo UE Nessun dato Indirizzo Koenigstuhl 17 69117 Heidelberg Mostra sulla mappa Costo totale Nessun dato National Academy of Sciences of Armenia Byurakan Astrophysical Observatory Armenia Contributo UE Nessun dato Indirizzo Byurakan 378433 Aragatsotn prov. Mostra sulla mappa Costo totale Nessun dato Russian Academy of Sciences Special Astrophysical Observatory Russia Contributo UE Nessun dato Indirizzo Nizhni Arkhyz, SAO 357147 Karachaevo-Cherkesia Mostra sulla mappa Costo totale Nessun dato
