Can I read Time Evolution of Simple Molecules During Proto-star Collapse on EtoBox?

Time Evolution of Simple Molecules During Proto-star Collapse by Ankan Das; Sandip K. Chakrabarti; Kinsuk Acharyya; Sonali Chakrabarti is a Physics and Astronomy article available to read on EtoBox.

What is Time Evolution of Simple Molecules During Proto-star Collapse about?

We study the formation and evolution of several molecules in a collapsing interstellar cloud using a reasonably large reaction network containing more than four hundred atomic and molecular species. We employ a time dependent, spherically symmetric, hydrodynamics code to follow the hydrodynamic and chemical evolution of the collapsing cloud. The flow is assumed to be self-gravitating. We use two models to study the hydrodynamic evolution: in the first model, we inject matter into an initially low density region and in the second model, we start with a constant density cloud and let it collapse due to self-gravity. We study the evolution of the central core for both the cases. We include the grain chemistry to compute the formation of molecular hydrogen and carried out the effect of gas and grain chemistry at each time step. We follow the collapse for more than 10 14 s (about 3 million years) and present the time evolution of the globally averaged abundances of various simple but biologically important molecules, such as glycine, alanine etc. We compare our results with those obtained from observations and found that for lighter molecules the agreement is generally very good. For co

Who reads Time Evolution of Simple Molecules During Proto-star Collapse?

Author

Ankan Das; Sandip K. Chakrabarti; Kinsuk Acharyya; Sonali Chakrabarti

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1384-1076)

Published

2008

Language

EN

Field

Physics and Astronomy (Physical Sciences)