288 citations · 2.9k across the 59 of their papers we have counts for
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Depletion of 15N in the center of L1544: Early transition from atomic to molecular nitrogen?
Kenji Furuya, Yoshimasa Watanabe, Takeshi Sakai +2
We performed sensitive observations of the N15ND+(1-0) and 15NND+(1-0) lines toward the prestellar core L1544 using the IRAM 30m telescope. The lines are not detected down to 3 sig…
Linking interstellar and cometary O: a deep search for OO in the solar-type protostar IRAS 16293--2422
Vianney Taquet, Ewine F. van Dishoeck, Matthew Swayne +15
Recent measurements carried out at comet 67P/C-G with the probe revealed that molecular oxygen, O, is the fourth most abundant molecule in comets. Models show t…
The Distribution and Excitation of CHCN in a Solar Nebula Analog
Ryan A. Loomis, L. Ilsedore Cleeves, Karin I. Öberg +5
Cometary studies suggest that the organic composition of the early Solar Nebula was rich in complex nitrile species such a CHCN. Recent ALMA detections in protoplanetary disks…
ALMA Observations of the IRDC Clump G34.43+00.24 MM3: Complex Organic and Deuterated Molecules
Takeshi Sakai, Takahiro Yanagida, Kenji Furuya +6
We have observed complex organic molecules (COMs) and deuterated species toward a hot core/corino (HC) associated with the infrared dark cloud (IRDC) clump G34.43+00.24 MM3 with th…
Depletion of heavy nitrogen in the cold gas of star-forming regions
Kenji Furuya, Yuri Aikawa
We investigate nitrogen isotope fractionation in forming and evolving molecular clouds using gas-ice astrochemical simulations. We find that the bulk gas can become depleted in hea…
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;…
Tracing the atomic nitrogen abundance in star-forming regions with ammonia deuteration
Kenji Furuya, Magnus V. Persson
Partitioning of elemental nitrogen in star-forming regions is not well constrained. Most nitrogen is expected to be partitioned among atomic nitrogen, molecular nitrogen (N2), and…
Adsorption energies of carbon, nitrogen, and oxygen atoms on the low-temperature amorphous water ice: A systematic estimation from quantum chemistry calculations
Takashi Shimonishi, Naoki Nakatani, Kenji Furuya +1
We propose a new simple computational model to estimate adsorption energies of atoms and molecules to low-temperature amorphous water ice, and we present the adsorption energies of…