International Conference on Interstellar Dust, Molecules and Chemistry

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The interstellar medium (ISM) consists of a mixture of ions, atoms, molecules, dust grains, cosmic rays, and (galactic) magnetic fields. Thus it is a treasure trove for the study of a wide variety of physical phenomenon. The ISM also plays a crucial role in star and planet formation. The interplay between stars and the ISM determines the lifespan of active star formation and evolution. Recent advances in observational, laboratory, theoretical studies have opened up several avenues of work, made attractive by the possibilities of diverse interdisciplinary interactions. The conference intends to provide platform for expert discussions and presentations with ample opportunities for young and motivated students and researchers to interact and to take up challenging problems in this field. Broad Topics: i) ISM Overview - Constituents, Observational diagnostics ii) Dust in ISM - Composition, Starlight extinction - observations & models iii) ISM Molecules and Spectroscopy iv) Star Formation - The Role of the ISM v) Dust and molecules in external galaxies vi) Laboratory Astrophysics and Astrochemistry vii) Quantum Chemistry

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    Hydrodynamic simulation coupled to chemical evolution in the star forming regions
    (2011-11-22) Majumdar, Liton; Das, Ankan; Chakrabarti, Sandip K.; et al.
    Chemical composition of a molecular cloud is highly sensitive upon the physical properties around that region. In order to have the more realistic knowledge around the star forming region, a two dimensional hydrodynamical flow is considered during the collapsing phase of a proto-star. Total variation diminishing scheme (TVD) is used to solve the set of hydrodynamical equations. Arm with this sophisticated hydrodynamical model, we couple our reasonably large chemical network including gas phase as well as grain phase chemical network, to study the chemical evolution during collapse of a protostar. Chemical evolution are studied by assuming constant temperature throughout the simulation as well as considering the temperature variation from the hydrodynamical model. It is noticed that Simulation results are highly sensitive upon the dynamic behavior of the collapsing Cloud.