P. Darriulat

Elastic scattering of polarised protons by C12

Abstract The angular dependence of the polarization resulting from the elastic scattering of protons by C12 has been measured for 8 protons energies between 5.4 and 19.7 MeV. Optical model analysis has been performed and is able to reproduce the experimental results except for two energy regions, around 10 and 20 MeV. Inelastic scattering polarization has also been obtained at 19.7 MeV for the first C12 excited level at 4.4 MeV.

Morphology and kinematics of the gas envelope of protostar L1527 as obtained from ALMA observations of the C18O(2–1) line emission

Using ALMA observations of the C

12CO emission from the Red Rectangle

^{18}

On the central symmetry of the circumstellar envelope of RS Cnc

O(2-1) line emission of the gas envelope of protostar L1527, we have reconstructed its morphology and kinematics under the assumption of axisymmetry about the west-east axis. The main original contribution to our understanding of the formation process of L1527 is the presentation of a simple 3D parameterisation based solely on regions that are not dominated by absorption. In the explored range (

Morphology and kinematics of the gas envelope of the Mira binary W Aquilae

\sim

Mapping Atomic Hydrogen in the Disk of the Milky Way

0.7 to 5 arcsec from the star) the model reproduces observations better than earlier attempts. The main results include: a measurement of the rotation velocity that confirms its evolution to Keplerian toward short distances; a measurement of the mean in-fall velocity, 0.43

Morphology of the

\pm

^{13}

0.10 kms

CO(3-2) millimeter emission across the gas disc surrounding the triple protostar GG Tau A using ALMA observations

^{-1}

De-projection of radio observations of axisymmetric expanding circumstellar envelopes

, lower than free fall velocity, with no evidence for the significant