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The UMIST database for astrochemistry 2012
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 new to this release.Expand
Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko
TLDR
The observations indicate that the O2/H2O ratio is isotropic in the coma and does not change systematically with heliocentric distance, which suggests that primordial O2 was incorporated into the nucleus during the comet’s formation, which is unexpected given the low upper limits from remote sensing observations. Expand
Chemical Processes in Protoplanetary Disks II. On the importance of photochemistry and X-ray ionization
We investigate the impact of photochemistry and X-ray ionization on the molecular composition of, and ionization fraction in, a protoplanetary disk surrounding a typical T Tauri star. We use aExpand
Complex organic molecules in protoplanetary disks
Context. Protoplanetary disks are vital objects in star and planet formation, possessing all the material, gas and dust, which may form a planetary system orbiting the new star. Small, simpleExpand
The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime
(Abridged) Near- to mid-IR observations of protoplanetary disks show that the inner regions (<10AU) are rich in small organic volatiles (e.g., C2H2 and HCN). Trends in the data suggest that disksExpand
CHEMICAL PROCESSES IN PROTOPLANETARY DISKS
We have developed a high-resolution combined physical and chemical model of a protoplanetary disk surrounding a typical T Tauri star. Our aims were to use our model to calculate the chemicalExpand
ALMA HINTS AT THE PRESENCE OF TWO COMPANIONS IN THE DISK AROUND HD 100546
HD 100546 is a well-studied Herbig Be star-disk system that likely hosts a close-in companion with compelling observational evidence for an embedded protoplanet at 68 AU. We present Atacama LargeExpand
First detection of gas-phase methanol in a protoplanetary disk
The first detection of gas-phase methanol in a protoplanetary disk (TW Hya) is presented. In addition to being one of the largest molecules detected in disks to date, methanol is also the first diskExpand
Grain Surface Models and Data for Astrochemistry
The cross-disciplinary field of astrochemistry exists to understand the formation, destruction, and survival of molecules in astrophysical environments. Molecules in space are synthesized via a largeExpand
Hydrocarbon Anions in Interstellar Clouds and Circumstellar Envelopes
The recent detection of the hydrocarbon anion C6H- in the interstellar medium has led us to investigate the synthesis of hydrocarbon anions in a variety of interstellar and circumstellarExpand
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