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  • 3:10 PM, Sunday, 24 Oct 2021


Course Dual Degree (B. Tech + M.S / M.Tech)
Semester Electives
Subject Code ESA465
Subject Title Formation of Stars and Planets

Syllabus

The interstellar medium and its phases – dust – molecular clouds – virial theorem analysis. Star clusters – OB associations – T and R associations – initial mass function. Heating and cooling of clouds – cloud thermal structure – build up of molecules – molecular transitions of H 2 , CO. Cloud equilibrium and stability – Jeans mass – isothermal spheres – basic magnetohydrodynamics – magnetic support – ambipolar diffusion – inside-out collapse – rotational effects. Collapse of dense cores – accretion – Deuterium burning – protostellar disks – fragmentation – formation of binaries and stellar groups – jets and molecular outflows – masers. Formation of massive stars – monolithic collapse – competitive accretion – stellar mergers. Effects of massive stars – hot cores – ultracompact HII regions – photoevaporation – induced star formation. Quasi-static contraction – nuclear reactions and stellar birth line – T-Tauri stars – Herbig Ae/Be stars – debris disks – planet formation in disks.

Text Books

1. The Formation of Stars by S. W. Stahler and F. Palla, 2004 – Wiley - VCH

2. The Origin of Stars and Planetary Systems, 1999, eds. C.J. Lada and N.D. Kylafis

3. Protostars and Planets V, 2007, eds. B. Reipurth, D. Jewitt, and K Kell

4. Accretion Processes in Star Formation, 1998, L. Hartmann

5. Astrophysics of Planet Formation, 2010, P. Armitage

References

Information Not Available