▪ Abstract Recent advances in the understanding of the chemical processes that occur
during all stages of the formation of stars, from the collapse of molecular clouds to the …

▪ Abstract Outflow activity is associated with all stages of early stellar evolution, from deeply
embedded protostellar objects to visible young stars. Herbig-Haro (HH) objects are the …

Context. The inner regions of the envelopes surrounding young protostars are characterized
by a complex chemistry, with prebiotic molecules present on the scales where …

Aims. The large quantity and high quality of modern radio and infrared line observations
require efficient modeling techniques to infer physical and chemical parameters such as …

We develop the use of the population diagram method to analyze molecular emission in
order to derive physical properties of interstellar clouds. We focus particular attention on how …

ABSTRACT Our modern day Solar System has 4.6× 109 yr of evolution behind it with just a
few relics of its birth conditions remaining. Comets are thought to be some of the most …

▪ Abstract A violent outflow of high-velocity gas is one of the first manifestations of the
formation of a new star. Such outflows emerge bipolarly from the young object and involve …

Glycolaldehyde (HCOCH 2 OH) is the simplest sugar and an important intermediate in the
path toward forming more complex biologically relevant molecules. In this Letter we present …

Several sulphur-bearing species have already been observed in different families of comets.
However, the knowledge on the minor sulphur species is still limited. The comet's sulphur …

Millimeter and submillimeter line surveys of the protobinary source IRAS 16293-2422 are
presented in the 230 and 345 GHz windows. In total, 265 lines belonging to 44 molecules …