Of the over 150 different molecular species detected in the interstellar and circumstellar
media, approximately 50 contain 6 or more atoms. These molecules, labeled complex by …

Molecular absorption and emission bands dominate the visible, infrared, and submillimeter
spectra of most objects with associated gas. These observations reveal a surprisingly rich …

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

We present the fifth release of the UMIST Database for Astrochemistry (UDfA). The new
reaction network contains 6173 gas-phase reactions, involving 467 species, 47 of which are …

The introduction of chemistry into astronomy is relatively recent and can be dated back to
about half a century ago, when molecules were discovered in space. In the 1930s it was …

Identifying the source of Earth's water is central to understanding the origins of life-fostering
environments and to assessing the prevalence of such environments in space. Water …

We have undertaken a survey of N 2 H+ and N 2 D+ toward 31 low-mass starless cores
using the IRAM 30 m telescope. Our main objective has been to determine the abundance …

Since the discovery of the first extrasolar planet around a solartype star, 1 more than 900
such planets outside of our solar system have been detected by ground-and space-based …

The maps presented in Paper I are here used to infer the variation of the column densities of
HCO+, DCO+, N 2 H+, and N 2 D+ as a function of distance from the dust peak. These …

Complex organic molecules (COMs) in protoplanetary disks are key to understanding the
origin of volatiles in comets in our solar system, yet the chemistry of COMs in protoplanetary …