2017ApJ...851L..46M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.18CET04:14:24

2017ApJ...851L..46M - Astrophys. J., 851, L46-L46 (2017/December-3)

ALMA detection of interstellar methoxymethanol (CH3OCH2OH).

McGUIRE B.A., SHINGLEDECKER C.N., WILLIS E.R., BURKHARDT A.M., EL-ABD S., MOTIYENKO R.A., BROGAN C.L., HUNTER T.R., MARGULES L., GUILLEMIN J.-C., GARROD R.T., HERBST E. and REMIJAN A.J.

Abstract (from CDS):

We report the detection of interstellar methoxymethanol (CH3OCH2OH) in Atacama Large Millimeter/submillimeter Array (ALMA) Bands 6 and 7 toward the MM1 core in the high-mass star-forming region NGC 6334I at ∼0.''1-1'' spatial resolution. A column density of 4(2) x 1018 cm–2 at Tex = 200 K is derived toward MM1, ∼34 times less abundant than methanol (CH3OH), and significantly higher than predicted by astrochemical models. Probable formation and destruction pathways are discussed, primarily through the reaction of the CH3OH photodissociation products, the methoxy (CH3O) and hydroxymethyl (CH2OH) radicals. Finally, we comment on the implications of these mechanisms on gas-phase versus grain-surface routes operative in the region, and the possibility of electron-induced dissociation of CH3OH rather than photodissociation.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrochemistry - ISM: individual objects: NGC 6334I - ISM: molecules - ISM: molecules

VizieR on-line data: <Available at CDS (J/ApJ/851/L46): table2.dat>

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO B1514-24 BLL 15 17 41.8135246339 -24 22 19.482167214   15.13 14.00 13.95   ~ 630 3
2 3FGL J1617.4-5846 AGN 16 17 17.8913859288 -58 48 07.860059063   18.23       ~ 84 1
3 ICRF J171736.0-334208 BLL 17 17 36.02909328 -33 42 08.8248676   20.93   17.3   ~ 87 1
4 [BHC2016] MM2 mm 17 20 53.188 -35 46 59.32           ~ 24 0
5 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 262 0
6 [BHC2016] MM1 mm 17 20 53.415 -35 46 57.88           ~ 41 0
7 [BHC2016] MM1B mm 17 20 53.419 -35 46 57.84           ~ 8 0
8 QSO B1730-130 QSO 17 33 02.70578476 -13 04 49.5481484   18 18.5 18.78   ~ 969 1
9 PMN J1733-3722 Rad 17 33 15.19301090 -37 22 32.3959728           ~ 35 1
10 QSO B1921-293 BLL 19 24 51.05595514 -29 14 30.1210524   18.71 18.21 15.07   ~ 666 0

    Equat.    Gal    SGal    Ecl

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2020.02.18-04:14:24

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