SIMBAD references

2019MNRAS.485L..19S - Mon. Not. R. Astron. Soc., 485, L19-L23 (2019/May-1)

Detection of methoxymethanol as a photochemistry product of condensed methanol.

SCHNEIDER H., CALDWELL-OVERDIER A., COPPIETERS'T WALLANT S., DAU L., HUANG J., NWOLAH I., KASULE M., BUFFO C., MULLIKIN E., WIDDUP L., HAY A., BAO S.T., PEREA J., THOMPSON M., TANO-MENKA R., VAN TUYL M., WANG A., BUSSEY S., SACHDEV N., ZHANG C., BOYER M.C. and ARUMAINAYAGAM C.R.

Abstract (from CDS):

We report the identification of methoxymethanol (CH3OCH2OH) as a photochemistry product of condensed methanol (CH3OH) based on temperature-programmed desorption studies conducted following photon irradiation at energies below the ionization threshold (9.8 eV) of condensed methanol. The first detection of methoxymethanol in the interstellar medium was reported in 2017 based on data from Bands 6 and 7 from the Atacama Large Millimeter/submillimeter Array (ALMA). The cosmic synthesis of 'complex' organic molecules such as methyl formate (HCOOCH3), dimethyl ether (CH3OCH3), acetic acid (CH3COOH), ethylene glycol (HOCH2CH2OH), and glycolaldehyde (HOCH2CHO) has been attributed to UV photolysis of condensed methanol found in interstellar ices. Experiments conducted in 1995 demonstrated that electron-induced radiolysis of methanol cosmic ice analogues yields methoxymethanol. In three recent publications (2016, 2017, and 2018), methoxymethanol was considered as a potential tracer for reactions induced by secondary electrons resulting from the interaction of cosmic rays with interstellar ices. However, the results presented in this study suggest that methoxymethanol can be formed from both radiation chemistry and photochemistry of condensed methanol.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astrochemistry - radiation mechanisms: non-thermal - cosmic rays - ISM: molecules

Simbad objects: 1

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2020.01.19-15:08:34

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