OBA YASUHIRO

J-GLOBAL         Last updated: Oct 25, 2019 at 15:32
 
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Name
OBA YASUHIRO
E-mail
obalowtem.hokudai.ac.jp
Affiliation
Hokkaido University
Section
Institute of Low Temperature Science

Research Areas

 
 

Published Papers

 
Physico-chemical behavior of hydrogen sulfide induced by reactions with H and D atoms on different types of ice surfaces at low temperature
Astrophysical Journal   874 8pp   Apr 2019   [Refereed]
Y. Oba, T. Tomaru, T. Lamberts, A. Kouchi, N. Watanabe
Nature Astronomy   2 228-232   Feb 2018   [Refereed]
Y. Oba, Y. Takano, H. Naraoka, A. Kouchi, N. Watanabe
The Astrophysical Journal   849(122) 9pp   Nov 2017   [Refereed]
S. Tachibana, A. Kouchi, T. Hama, Y. Oba, L. Piani, I. Sugawara, Y. Endo, H. Hidaka, Y. Kimura, K. Murata, H. Yurimoto, and N. Watanabe
3(9) eaao2538   Sep 2017   [Refereed]
Y.Oba, Y.Takano , N.Watanabe, and A. Kouchi
Astrophysical Journal Letters   827(1) L18(7pp)   Aug 2016   [Refereed]
Oba Y., Osaka K., Chigai T., Kouchi A., and Watanabe N
Monthly Notices of Royal Astronomical Society   462(1) 689-695   Jul 2016   [Refereed]
Y. Oba, N. Watanabe, Y. Osamura, A.Kouchi
Chem. Phys. Lett.   634 53-59   Jun 2015   [Refereed]
Y. Oba, K. Osaka, N. Watanabe, T. Chigai, A. Kouchi
Faraday Discussion 168   185-204   May 2014   [Refereed]
Y.Oba, T. Chigai, Y. Osamura, N. Watanabe, A. Kouchi
Meteoritics & Planetary Scienc   49(1) 117-132   Apr 2013   [Refereed]
Oba Y., Watanabe N., Hama T., Kuwahata K., Hidaka H., and Kouchi A.
The Astrophysical Journal   749(67) 12pp   Mar 2012   [Refereed]
Y.Oba
Researches in Organic Geochemistry   27 103-115   Sep 2011   [Refereed]
Formation of H2O ice through the surface reaction O2 + H at low temperatures: Reaction kinetics and structure of the ice
Y. Oba, N. Miyauchi, T. Chigai, H. Hidaka, N. Watanabe, and A. Kouchi
Physics and Chemistry of ice 2010   369-378   2011   [Refereed]
Laboratory investigations of physico-chemical processes occurring in icy mantles on interstellar dust grains
V. Pirronello, M. Accolla, T. Hama, H. Hidaka, A. Kouchi, G. Manico, Y. Oba, and N. Watanabe
Physics and Chemistry of Ice2010   361-368   2011   [Refereed]
Oba Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
Physical Chemistry Chemical Physics   13(35) 15792-15797   Jul 2011   [Refereed]
S. R. Parker, C. H. Gammons, S. R. Poulson, M. D. DeGrandpre, C. L. Weyer, M. G. Smith, J. N. Babcock, and Oba Y.
ChemicalGeology   269(1-2) 22-32   Jan 2010   [Refereed]
Oba Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
The Astrophysical Journal   712(2,Pt.2) L174-L178   Apr 2010   [Refereed]
a Y., Watanabe N., Kouchi A., Hama T., and Pirronello V.
The Astrophysical Journal   722(2,Pt.1) 1598-1606   Oct 2010   [Refereed]
Kaneko, M., Oba Y., and Naraoka, H
Res.Org.Geochem.   26 73-79   2010   [Refereed]
Moon E.-S., Kang H., Oba Y., Watanabe N., and Kouchi A.
The Astrophysical Journal   713(2,Pt.1) 906-911   Apr 2010   [Refereed]
N. Watanabe, A. Kouchi, H. Hidaka, Oba Y., and N. Miyauchi
Journal of Physics: Conference Series   194(1) 012044   2009   [Refereed]
Formation of amorphous H2O ice from the reactions of cold H atoms with solid O2 at 10K
A. Kouchi, N. Watanabe, H. Hidaka, N. Miyauchi, Oba Y., and T. Chigai
Cosmic Dust-Near & Far, ASP Conference Series   414 338   2009   [Refereed]
Oba Y., and Poulson S.R.
Geochim. Cosmochim. Acta   73(1) 13-24   2009   [Refereed]
Oba Y., Miyauchi N., Chigai T., Hidaka H., Watanabe N., and Kouchi A.
The Astrophysical Journal   701(1) 464-470   Jul 2009   [Refereed]
Oba Y., and Naraoka H.
Meteoritics & Planetary Science   44(7) 943-953   Jul 2009   [Refereed]
Oba Y., and Poulson S.R.
ChemicalGeology   268(3-4) 226-232   Nov 2009   [Refereed]
Oba Y., and Naraoka H.
Organicgeochemistry   39(5) 501-509   2008   [Refereed]
Oba Y., and Naraoka H.
Geochem. J.   41(2) 103-110   2007   [Refereed]
Oba Y., and Naraoka H.
Meteoritics & Planetary Science   41(8) 1175-1181   2006   [Refereed]
Oba Y., and Naraoka H.
Rapid Communications in Mass Spectrometry   20(24) 3649-3653   2006   [Refereed]
A different behavior of hydrogen isotope exchange in aqueous solutions between two PAH isomers (fluoranthene and pyrene)
Oba Y., and Naraoka H.
Researches in organic geochemistry   18 29-35   2003   [Refereed]

Misc

 
Y.Oba, N.Watanabe,T.Hama, K.Kuwahata, H.Hidaka, A.Kouchi
The Astrophysical Journal   749(1) 67-(12pp)   2012   [Refereed]
Formation of H2O ice through the surface reaction O2 + H at low temperatures: Reaction kinetics and structure of the ice
Y.Oba, N.Miyauchi, T.Chigai, H.Hidaka, N.Watanabe, A.Kouchi
Physics and Chemistry of ice 2010   369-378   2011   [Refereed]
Laboratory investigations of physico-chemical processes occurring in icy mantles on interstellar dust grains
V. Pirronello, M. Accolla, T. Hama, H. Hidaka, A. Kouchi, G. Manico, Y. Oba, N. Watanabe
Physics and Chemistry of ice 2010   361-368   2011   [Refereed]
Y.Oba, N.Watanabe, A.Kouchi, T.Hama, V.Pirronello
Physical Chemistry Chemical Physics   13(35) 15792-15797   2011   [Refereed]
Y.Oba, N.Watanabe, A.Kouchi, T.Hama, V.Pirronello
The Astrophysical Journal   722(2,Pt.1) 1598-1606   Oct 2010   [Refereed]
S. R. Parker, C. H. Gammons, S. R. Poulson, M. D. DeGrandpre, C. L. Weyer, M. G. Smith, J. N. Babcock, Y. Oba
Chemical Geology   269(1-2) 22-32   Jan 2010   [Refereed]
Y.Oba, N.Watanabe, A.Kouchi, T.Hama, V.Pirronello
The Astrophysical Journal   712(2,Pt.2) L174-L178   Mar 2010   [Refereed]
E.-S.Moon, H.Kang, Y.Oba, N.Watanabe, A. Kouchi
The Astrophysical Journal   713(2,Pt.1) 906-911   Mar 2010   [Refereed]
M.Kaneko, Y.Oba, H.Naraoka
Researches in Organic Geochemistry   26 73-79   2010   [Refereed]
N.Watanabe, A.Kouchi, H.Hidaka, Y.Oba, N.Miyauchi
XXVI International Conference on Photonic, Electronic and Atomic Collisions, Journal of Physics: Conference Series   194 012044   2009   [Refereed]
Formation of amorphous H2O ice from the reactions of cold H atoms with solid O2 at 10K
A.Kouchi, N.Watanabe, H.Hidaka, N.Miyauchi, Y.Oba, T.Chigai
Cosmic Dust-Near & Far, ASP Conference Series   414 338   2009   [Refereed]
Y.Oba, S.R.Poulson
Geochimica et Cosmochimica Acta   73(1) 13-24   2009   [Refereed]
Y.Oba, N.Miyauchi, T.Chigai, H.Hidaka, N.Watanabe, A.Kouchi
The Astrophysical Journal   701(1) 464-470   Jul 2009   [Refereed]
Y.Oba, H.Naraoka
Meteoritics and Planetary Science   44(7) 943-953   2009   [Refereed]
Y.Oba, S.R.Poulson
Chemical Geology   268(3-4) 226-232   Nov 2009   [Refereed]
Y.Oba, H.Naraoka
Organic Geochemistry   39(5) 501-509   2008   [Refereed]
Y.Oba, H.Naraoka
Geochemical Journal   41(2) 103-110   2007   [Refereed]
Y.Oba, H.Naraoka
Meteoritics and Planetary Science   41(8) 1175-1181   Aug 2006   [Refereed]
Y.Oba, H.Naraoka
Rapid Communications in Mass Spectrometry   20(24) 3649-3653   2006   [Refereed]
Y.Oba, H.Naraoka
Researches in Organic Geochemistry   18 29-35   2003   [Refereed]

Conference Activities & Talks

 
H2S, why you no solid at 10 K? -Nonthermal desorption from interstellar icy grains [Invited]
OBA YASUHIRO
JPGU 2018 Meeting   22 May 2018   
Experimental studies on the surface reaction of hydrogen sulfide with deuterium atoms on amorphous solid water at 10 K [Invited]
OBA YASUHIRO
ACS Spring National Meeting   21 Mar 2018   
Formation of chiral glycine by surface reactions of normal glycine with deuterium atoms at 10 K [Invited]
OBA YASUHIRO
Astrophysical Ices in the Lab (AILab)   8 Mar 2016   
Formation of H2O ice on cold interstellar grains: Reaction kinetics and the structure of ice [Invited]
OBA YASUHIRO
Center for Astrochemical Studies Seminar   13 Oct 2015   
Co-evolution of water and organics via surface reactions on interstellar grains [Invited]
OBA YASUHIRO
JPGU 2013 Meeting   22 May 2013   
Formation of H2O ice on cold interstellar grains: reaction kinetics and the structure of ice [Invited]
Y. Oba
Workshop on Ice and Water Films   6 May 2013   
Laboratory study of solid H2O formation trhough quantum tunneling reaction OH + H2 at 10 K
Y. Oba, N. Watanabe, T. Hama, K. Kuwahata, H. Hidaka, A. Kouchi
Dynamical Phenomena at Surfaces: The Role of Complexity   Nov 2012   
Water formation by OH + H2 on grain surfaces at 10 K: large isotope effects by quantum tunneling
Y. Oba, N. Watanabe, T. Hama, K. Kuwahata, H. Hidaka, A. Kouchi
Workshop on Interstellar Matter 2012   Oct 2012   
Deuterium fractionation of methylamine through atomic grain-surface reactions at low temperatures: implication for the possible D/H ratio in molecular clouds
Y. Oba, T. Chigai, N. Watanabe, A. Kouchi
Workshop on Interstellar Matter 2012   Oct 2012   
Formation of solid H2O through surface reactions of H2 with OH radicals produced by microwave-induced H2O plasma
Y. Oba, N. Watanabe, T. Hama, K. Kuwahata, H. Hidaka, A. Kouchi
Gordon Research Conference, Radiation Chemisty   Jul 2012   
Surface chemical reactions to the formation of solid H2O and its isotopologues on interstellar grains at 10 K
Y. Oba, N. Watanabe, T. Hama, K. Kuwahata, H. Hidaka, A. Kouchi
Asteroids, Comets, Meteors (ACM) 2012   May 2012   
Hydrogen isotope substitution of solid methylamine (CH3NH2) on a low-temperature surface
Y. Oba, N. Watanabe, T. Hama, K. Kuwahata, H. Hidaka, A. Kouchi
Asteroids, Comets, Meteors (ACM) 2012   May 2012   
Low-temperature surface reactions of non-energetic OH radicals of astrophysical interest
Y. Oba, N. Watanabe, T. Hama, A. Kouchi, V. Pirronello
SASP 2012   Jan 2012   
Isotope effect on the formation of H2O isotopologues by quantum tunneling reactions of H2/HD/D2 with non-energetic OH/OD radicals at low temperatures
Y. Oba, N. Watanabe, A. Kouchi
MATRIX 2011   Jul 2011   
Sequential hydrogenation of molecular oxygen on cold surfaces: reaction kinetics and structure of formed H2O ice
Y. Oba, N. Miyauchi, H. Hidaka, T. Chigai, N. Watanabe, A. Kouchi
IAU symposium 280, The Molecular Universe   May 2011   
Neutral radical-molecule reactions CO + OH on cold interstellar ices
Y. Oba, N. Watanabe, A. Kouchi, T. Hama, V. Pirronello
IAU symposium 280, The Molecular Universe   May 2011   
Experimental studies on surface reactions of CO molecules with cold OH radicals at 10-40 K
Y. Oba, N. Watanabe, A. Kouchi, T. Hama, V. Pirronello
Pacifichem 2010   Dec 2010   
Structure of H2O ice formed by surface reactions of oxygen molecules with hydrogen atoms at low temperatures [Invited]
Y. Oba, N. Miyauchi, H. Hidaka, T. Chigai, N. Watanabe, A. Kouchi
12th International Conference on the Physics and Chemistry of Ice   Sep 2010   
Formation of CO2 and H2CO3 through non-energetic surface reactions at low temperatures
Y. Oba, N. Watanabe, A. Kouchi, T. Hama, V. Pirronello
Workshop on Interstellar Matter 2010   Sep 2010   
Formation of compact amorphous water ice by surface atomic reactions at low temperatures [Invited]
A. Kouchi, Y. Oba, N. Miyahchi, H. Hidaka, T. Chigai, N. Watanabe
2010 Western Pacific Geophysics Meeting   Jun 2010   
Surface reactions of CO molecules with OH radicals at low temperatures
Y. Oba, N. Watanabe, A. Kouchi, T. Hama, V. Pirronello
2010 Western Pacific Geophysics Meeting   Jun 2010   
Surface reactions of hydrogen atoms with oxygen molecules at low temperatures: A potential route for the H2O formation in space
Y. Oba, N. Miyauchi, H. Hidaka, T. Chigai, N. Watanabe, A. Kouchi
Horiba-ISSP International Symposium on "Hydrogen and water in condensed matter physics"   Oct 2009   
Formation of compact amorphous H2O ice by a reaction of hydrogen atoms with oxygen molecules at low temperatures
Y. Oba, N. Miyauchi, T. Chigai, H. Hidaka, N. Watanabe, A. Kouchi
Gordon Research Conferences, Matrix-Isolated Species, Physics & Chemistry Of   Jul 2009   
Formation of interstellar ice by low temperature surface atomic reactions
A. Kouchi, Y. Oba, N. Miyahchi, H. Hidaka, N. Watanabe
CRYO2009   Jul 2009   
Effective formation of H2O by the H-addition to solid O2 on amorphous D2O ice
Y. Oba, N. Miyauchi, T. Chigai, H. Hidaka, N. Watanabe, A. Kouchi
Workshop on Interstellar Matter 2008   Sep 2008   
Incorporation of hydrous oxygen into insoluble organic matter (IOM) of Murchison
Y. Oba, H. Naraoka
71th Annual Meeting of the Meteoritical Society   Jul 2008   
Isotopic variation of macromolecular organic matter from CM chondrites during hydrous pyrolysis
Y. Oba, H. Naraoka
31th Symposium on Antarctic Meteorites   Jun 2007   
Carbon and hydrogen isotopic fractionations of organic compounds during UV degradation
Y. Oba, H. Naraoka
16th Annual V. M. Goldschmidt Conference   Aug 2006   
Intramolecular carbon isotopic distribution of macromolecular organic matter in carbonaceous chondrites (CM)
Y. Oba, H. Naraoka
68th Annual Meeting of the Meteoritical Society   Sep 2005   
Carbon and hydrogen isotopic compositions of acetic acid derived from macromolecular organic matter in the Murchison
Y. Oba, H. Naraoka
29th Symposium on Antarctic Meteorites   Jun 2005   
A different behavior of hydrogen isotope exchange between two PAH isomers (fluoranthen and pyrene)
Y. Oba, H. Naraoka
13th Annual V. M. Goldschmidt Conference   Sep 2003