Our Sun and planetary system were born about 4.5 billion years ago. How did this happen,
and what is the nature of our heritage from these early times? This review tries to address …

1.1. Interstellar Clouds and Interstellar Chemistry A space between stars is not completely a
vacuum, but is filled up with interstellar gas, whose average number density of H nuclei in all …

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

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 …

Context. Complex organic molecules are detected in many sources in the warm inner
regions of envelopes surrounding deeply embedded protostars. Exactly how these species …

Complex organic molecules have been observed for decades in the interstellar medium.
Some of them might be considered as small bricks of the macromolecules at the base of …

Stars form from the gravitational collapse of dense molecular cloud cores. In the protostellar
phase, mass accretes from the core onto a protostar, likely through an accretion disk; and it …

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 …

ABSTRACT We report Atacama Large Millimeter/submillimeter Array (ALMA) cycle 0
observations of the C 18 O (J= 2–1), SO (JN= 6 5–5 4), and the 1.3 mm dust continuum …

We have analyzed rotational spectral line emission of OCS, CH 3 OH, HCOOCH 3, and H 2
CS observed toward the low-mass Class 0 protostellar source IRAS 16293–2422 Source A …