2000ApJ...540L.107H


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET21:23:50

2000ApJ...540L.107H - Astrophys. J., 540, L107-L110 (2000/September-2)

Interstellar glycolaldehyde: the first sugar.

HOLLIS J.M., LOVAS F.J. and JEWELL P.R.

Abstract (from CDS):

Interstellar glycolaldehyde (CH2OHCHO) has been detected in emission toward the Galactic center source Sagittarius B2(N) by means of millimeter-wave rotational transitions. Glycolaldehyde is an important biomarker since it is structurally the simplest member of the monosaccharide sugars that heretofore have gone undetected in interstellar clouds. There is no consensus as to how any such large complex molecules are formed in the interstellar clouds. It may be that the typical environment of dense interstellar clouds is favorable to glycolaldehyde synthesis by means of the polymerization of formaldehyde (H2CO) molecules either on grain surfaces or in the gas phase. Alternatively, we speculate that glycolaldehyde and other complex molecules may undergo assembly from functional molecular groups on grain surfaces. Utilizing common chemical precursors, a chance process could account for the high degree of isomerism observed in complex interstellar molecules (e.g., methyl formate, acetic acid, and glycolaldehyde). This work suggests that the phenomenon of isomerism be investigated further as a means of potentially constraining interstellar chemistry routes for those individual sources where the condition of good source-beam coupling can be achieved.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - ISM: Clouds - ISM: individual (Sagittarius B2(N)) - ISM: Molecules - Radio Lines: ISM

Simbad objects: 8

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Number of rows : 8

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 B0420-0127 QSO 04 23 15.80072776 -01 20 33.0654034   17.50 17.00 16.28   ~ 1029 3
2 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1000 2
3 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5275 1
4 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2661 2
5 QSO B1730-130 QSO 17 33 02.70578476 -13 04 49.5481484   18 18.5 18.78   ~ 969 1
6 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 504 1
7 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1879 1
8 W 51 SNR 19 23 50 +14 06.0           ~ 1130 1

    Equat.    Gal    SGal    Ecl

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2020.02.17-21:23:50

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