Orbital periods of cataclysmic variables identified by the SDSS. VIII. A slingshot prominence in SDSS J003941.06+005427.5?

Orbital Separation Amplification in Fragile Binaries with Evolved Components

Orbital Solutions for Two Young, Low-Mass Spectroscopic Binaries in Ophiuchus

Orbitally modulated dust formation by the WC7+O5 colliding-wind binary WR140

Orbits and Masses in the multiple system LHS 1070

Orbits of Six Late-type Active-Chromosphere Binaries

Origin of CEMP stars: What helium and lithium can tell us about CEMP stars?

Origin of Extremely Asymmetric Stokes V Profiles in an Inhomogeneous Atmosphere

Origin of lithium enrichment in K giants

Origin of solar magnetism

Origin of spatial variations of scattering polarization in the wings of the Ca {\sc i} 4227 Åline

Origin of the Chemical Elements

Origin of the hot gas in low-mass protostars: Herschel-PACS spectroscopy of HH 46

Origin of the p-Nuclei in Explosive Nucleosynthesis

Origin of the submillimeter radio emission during the time-extended phase of a solar flare

Origins of the H, He I, and Ca II Line Emission in Classical T Tauri Stars

Ortho-to-para ratio of interstellar heavy water

Oscillation mode frequencies of 61 main-sequence and subgiant stars observed by Kepler

Oscillation mode lifetimes of red giants observed during the initial and first anticentre long run of CoRoT

Oscillation mode linewidths of main-sequence and subgiant stars observed by Kepler