157 citations · 638 across the 10 of their papers we have counts for
10 papers
Multiple paths of deuterium fractionation in protoplanetary disks
Yuri Aikawa, Kenji Furuya, Ugo Hincelin +1
We investigate deuterium chemistry coupled with the nuclear spin-state chemistry of H and H in protoplanetary disks. Multiple paths of deuterium fractionation are found;…
Water delivery from cores to disks: deuteration as a probe of the prestellar inheritance of H2O
K. Furuya, M. N. Drozdovskaya, R. Visser +5
We investigate the delivery of regular and deuterated forms of water from prestellar cores to circumstellar disks. We adopt a semi-analytical axisymmetric two-dimensional collapsin…
On the Inference of the Cosmic Ray Ionization Rate from the HCO-to-DCO Abundance Ratio: The Effect of Nuclear Spin
Christopher N. Shingledecker, Jennifer B. Bergner, Romane Le Gal +3
The chemistry of dense interstellar regions was analyzed using a time-dependent gas-grain astrochemical simulation and a new chemical network that incorporates deuterated chemistry…
Chemical and physical characterization of collapsing low-mass prestellar dense cores
U. Hincelin, B. Commercon, V. Wakelam +3
The first hydrostatic core, also called the first Larson core, is one of the first steps in low-mass star formation, as predicted by theory. With recent and future high performance…
Water deuteration and ortho-to-para nuclear spin ratio of H2 in molecular clouds formed via the accumulation of HI gas
K. Furuya, Y. Aikawa, U. Hincelin +4
We investigate the water deuteration ratio and ortho-to-para nuclear spin ratio of H2 (OPR(H2)) during the formation and early evolution of a molecular cloud, following the scenari…
A New and Simple Approach to Determine the Abundance of Hydrogen Molecules on Interstellar Ice Mantles
Ugo Hincelin, Qiang Chang, Eric Herbst
Water is usually the main component of ice mantles, which cover the cores of dust grains in cold portions of dense interstellar clouds. When molecular hydrogen is adsorbed onto an…
Water deuterium fractionation in the high-mass star-forming region G34.26+0.15 based on Herschel/HIFI data
Audrey Coutens, Charlotte Vastel, Ugo Hincelin +8
Understanding water deuterium fractionation is important for constraining the mechanisms of water formation in interstellar clouds. Observations of HDO and HO transitions…
Survival of interstellar molecules to prestellar dense core collapse and early phases of disk formation
Ugo Hincelin, Valentine Wakelam, Benoît Commerçon +2
An outstanding question of astrobiology is the link between the chemical composition of planets, comets, and other solar system bodies and the molecules formed in the interstellar…
Elemental nitrogen partitioning in dense interstellar clouds
Julien Daranlot, Ugo Hincelin, Astrid Bergeat +4
Many chemical models of dense interstellar clouds predict that the majority of gas-phase elemental nitrogen should be present as N2, with an abundance approximately five orders of…
Oxygen depletion in dense molecular clouds: a clue to a low O2 abundance?
U. Hincelin, V. Wakelam, F. Hersant +4
Context: Dark cloud chemical models usually predict large amounts of O2, often above observational limits. Aims: We investigate the reason for this discrepancy from a theoretical p…