Transport Phenomena In Star Forming Molecular Clouds

Abstract

The present generation scienti c status in broad, generally or otherwise with speculation historically linked to the open sky observations and the physical interpretations of the phenomena, "Astronomy of the ancient people." The interpretations were more philosophical while the observational tests were much constrained. But, today we are contended with diverse but interdisciplinary sciences, as it has to be. Irrespective of this fact, Astronomy is still the eld of natural philosophy as well as the science of discovery including, the origin, evolution and age of the universe at the other extreme development of the science as the measure of the knowledge of human beings. The transport phenomena by energy is a crucial physical process in star-forming molecular clouds. As a molecular cloud collapses, gravitational potential energy is converted(transformed) into thermal energy and radiated away, if this thermal energy is not lost, the resulting pressure would halt the collapse. Magnetic and gravitational forces can both play important roles in transforming angular momentum in star-forming molecular cloud formation. During star-forming molecular clouds, the amount of energy in ow is increasing but the amount of energy out ow is decreasing , the radius of the cloud reduces, and temperature increases( heats up). As a cloud of interstellar gas collapses to form a star, approximately half of the potential energy would be transformed to thermal energy and the other half would be radiated in the form of electromagnetic radiation. There is an overall progress in astronomy and astrophysics, several problems ranging from observational limitations to theoretical developments have remained unresolved. For example, the origin, evolution and structure of stars, galaxies and interstellar media ISM are not yet fully developed. However, according to the current astrophysical understanding, most of the substances that make up our world are formed in stars. Meanwhile, the process of star formation is inextricably tied up with the formation and early evolution of planetary systems. It is generally believed that stars are formed from dust molecular clouds made up of mostly from hydrogen gas. The questions : How these molecular clouds MCs form into stars? What dynamical quantities responsible for star-formation? How these dynamical systems a ect or responsible for star-formation? What is the coupling dynamics between these quantities and how do they evolve? Are some fundamental questions to be answered in star-formation and stellar evolution. The current picture is that seeded magnetic eld, turbulence and gravity play role in the formation and evolution of interstellar clouds and in star formation. The existing models about how these parameters play role are not yet concisely and concretely established. The main objective of this project is to study the role of transport phenomena (particleenergy) and the dynamical controlling parameters responsible for stellar evolutionary scenario.