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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…
A Multi-Transition Study of Molecules toward NGC 1068 based on High-Resolution Imaging Observations with ALMA
Taku Nakajima, Shuro Takano, Kotaro Kohno +6
We present 0.8-mm band molecular images and spectra obtained with the Atacama Large Millimeter/submillimeter Array (ALMA) toward one of the nearest galaxies with an active galactic…
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…
Complex organic molecules along the accretion flow in isolated and externally irradiated protoplanetary disks
Catherine Walsh, Eric Herbst, Hideko Nomura +2
(Abridged) The birth environment of the Sun will have influenced the conditions in the pre-solar nebula, including the attainable chemical complexity, important for prebiotic chemi…
Distributions of molecules in the circumnuclear disk and surrounding starburst ring in the Seyfert galaxy NGC 1068 observed with ALMA
Shuro Takano, Taku Nakajima, Kotaro Kohno +6
Sensitive observations with ALMA allow astronomers to observe the detailed distributions of molecules with relatively weak intensity in nearby galaxies. In particular, we report di…
Interstellar Simulations Using A Unified Microscopic-Macroscopic Monte Carlo Model with a full Gas-Grain Network including Bulk Diffusion in Ice Mantles
Qiang Chang, Eric herbst
We have designed an improved algorithm that enables us to simulate the chemistry of cold dense interstellar clouds with a full gas-grain reaction network. The chemistry is treated…