2019MNRAS.485L..19S

Query : 2019MNRAS.485L..19S

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.

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

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NAME NGC 6334-I	Cl*	17 20 53.35	-35 47 01.5						~	373	0

Query : 2019MNRAS.485L..19S

Basic data :

NAME NGC 6334-I -- Cluster of Stars
Other object types:	`IR (MFSW,[CFG78],...)`, `Cl* (2013A&A,[BDB2003])`, `smm (JCMTSE,JCMTSF)`, `EmO ([GMR67])`
ICRS coord. (ep=J2000) :	`17 20 53.35 -35 47 01.5 [ ] D 2006A&A...454L..83L`
FK4 coord. (ep=B1950 eq=1950) :	`17 17 32.21 -35 44 04.0 [ ]`
Gal coord. (ep=J2000) :	`351.41678 +00.64525 [ ]`
Angular size (arcmin):	`1.78 1.78 90 (~) D` `2013A&A...560A..76M`

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`NAME NGC 6334-I`	`MFSW I`	`[CFG78] Peak II`
`JCMTSE J172053.2-354702`	`NGC 6334I`	`[DDW77] A`
`JCMTSF J172053.2-354702`	`[BDB2003] G351.41+00.64`	`[GMR67] A`

References (373 between 1850 and 2026) (Total 373)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NAME NGC 6334-I

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