Observational diagnostics of gas in protoplanetary disks

Observational effects of magnetism in O stars: surface nitrogen abundances

Observational evidence for a broken Li Spite plateau and mass-dependent Li depletion

Observational evidence for a correlation between macroturbulent broadening and line-profile variations in OB Supergiants

Observational Evidence for Coronal Twisted Flux Rope

Observational evidence for dust growth in proto-planetary discs

Observational Evidence of Back-reaction on the Solar Surface Associated with Coronal Magnetic Restructuring in Solar Eruptions

Observational evidence of resonantly damped propagating kink waves in the solar corona

Observational features of equatorial coronal hole jets

Observational indicators of the transition from fully convective stars to stars with radiative cores

Observational limits on the spin-down torque of Accretion Powered Stellar Winds

Observational signatures for depletion in the Spite plateau: solving the cosmological Li discrepancy?

Observational signatures of lithium depletion in the metal-poor globular cluster NGC6397

Observational Signatures of Simulated Reconnection Events in the Solar Chromosphere and Transition Region

Observational signatures of the coronal kink instability with thermal conduction

Observational studies of Cepheid amplitudes. I - Period-amplitude relationships for Galactic Cepheids and interrelation of amplitudes

Observational studies of highly evolved cataclysmic variables

Observational Study of the Multistructured Planetary Nebula NGC 7354

Observational Tests of Neutron Star Relativistic Mean Field Equations of State

Observations and asteroseismological analysis of the rapid subdwarf B pulsator EC 09582-1137