2005ApJ...624L..33W

Query : 2005ApJ...624L..33W

2005ApJ...624L..33W - Astrophys. J., 624, L33-L36 (2005/May-1)

1,3-Dihydroxyacetone in Sagittarius B2 (N-LMH): the first interstellar ketose.

WIDICUS WEAVER S.L. and BLAKE G.A.

Abstract (from CDS):

We present here the results of an initial search for 1,3-dihydroxyacetone [or DHA, CO(CH2OH)2], the simplest ketose monosaccharide, toward the Sagittarius B2(N-LMH) hot core. Nine possible DHA emission lines have been observed with the Caltech Submillimeter Observatory, from which a rotational excitation temperature of 220±65 K and a beam-averaged column density of (4.9±2.2)x1015/cm2 are derived. If confirmed by additional observations, DHA would be among the most abundant complex molecules yet detected. DHA is not considered in any existing grain mantle or molecular cloud chemical model, highlighting the need for a more detailed investigation of the formation of prebiotic compounds in hot cores.

Abstract Copyright: ∼

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

Errata: erratum vol. 632, p. L163 (2005)

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 Large Molecule Heimat MoC 17 47 20.4943 -28 22 11.656           ~ 127 0

Query : 2005ApJ...624L..33W

Basic data :
NAME Large Molecule Heimat -- Molecular Cloud
Other object types: otypes_help 		MoC (), smm (JCMTSF), mm (BGPS)
ICRS coord. (ep=J2000) : 		17 47 20.4943 -28 22 11.656 (mm) [ ] E 2010ApJS..188..123R
FK4 coord. (ep=B1950 eq=1950) : 		17 44 10.7105 -28 21 09.387 [ ]
Gal coord. (ep=J2000) : 		000.6800754 -00.0285607 [ ]
Angular size (arcmin): 		0.74 0.44 71 (mm) D 2010ApJS..188..123R
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Identifiers (6) :
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NAME Sgr B2(N)-LMH JCMTSF J174720.1-282214 NAME Sgr B2 (LMH)
BGPS G000.680-00.029 NAME Large Molecule Heimat NAME Sgr B2 (N-LMH)

References (127 between 1850 and 2026) (Total 127)
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