Stars evolution Stars pre-main sequence Star formation Protoplanetary disks Accretion disks ISM structure Molecular processes Accretion discs Planet formation Astrophysics - Earth and Planetary Astrophysics Astrophysics - Astrophysics of Galaxies Stars solar-type Extinction Techniques photometric Stars winds Pulsars general Planets and satellites detection Methods data analysis Polarimetry Herbig Ae/Be Techniques image processing Gamma ray VHE Submillimeter ISM HESS Infrared stars Techniques spectroscopic Techniques radial velocities Radiation mechanisms non-thermal Polarization Surveys Scattering Stars late-type Circumstellar matter Outflows Instabilities Binaries general Stars early-type Stars imaging Astrophysics - High Energy Astrophysical Phenomena Black hole physics Gamma rays general X-rays galaxies Accretion ISM clouds Acceleration of particles Stars massive Planets and satellites dynamical evolution and stability Stars variables T Tauri Radiative transfer Radio lines ISM Stars magnetic field Astrophysics Planets and satellites formation Stars formation Pluto Galaxies active Astrometry Techniques polarimetric Instrumentation high angular resolution Stars rotation Planets and satellites atmospheres Binaries close Binaries visual Spectroscopy Methods observational Stars fundamental parameters Astrochemistry Stars low-mass X-rays binaries Methods statistical Protoplanetary discs Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Solar and Stellar Astrophysics Dust Techniques interferometric Submillimeter planetary systems Mars Brown dwarfs Stars activity Molecular data Instrumentation adaptive optics Stars protostars Galaxies Seyfert Exoplanets Planets and satellites gaseous planets Interstellar medium Techniques high angular resolution ISM abundances Molecular physics ISM jets and outflows ISM molecules Turbulence Hydrodynamics Infrared planetary systems Methods numerical Planet-disk interactions Planetary systems Magnetohydrodynamics MHD Comets