Production of hexamethylenetetramine in photolyzed and irradiated interstellar cometary ice analogs

被引:63
作者
Cottin, H
Szopa, C
Moore, MH
机构
[1] NASA, Goddard Space Flight Ctr, Astrochem Branch, Greenbelt, MD 20771 USA
[2] Univ Paris 07, Lab Interuniv Syst Atmospher, CNRS, UMR 7583, F-94010 Creteil, France
[3] Univ Paris 12, Lab Interuniv Syst Atmospher, CNRS, UMR 7583, F-94010 Creteil, France
基金
美国国家航空航天局;
关键词
astrochemistry; comets : general; ISM : molecules; methods : laboratory; space vehicles : instruments;
D O I
10.1086/324575
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report hexamethylenetetramine (HMT) detection in organic residues resulting from H2O : CO : CH3OH : NH3 ices submitted to UV photolysis or proton irradiation. This is the first time HMT is detected after proton irradiation of an interstellar or cometary ice analog, whereas this molecule was suspected to be a characteristic signature of UV versus ion processing. This result strengthens the probability of HMT presence in the interstellar medium and in comets, where it may eventually be detected with the COSAC (COmetary Sampling And Composition) experiment on board the upcoming Rosetta mission.
引用
收藏
页码:L139 / L142
页数:4
相关论文
共 30 条
[11]   Infrared Space Observatory with the observations of solid carbon dioxide in molecular clouds [J].
Gerakines, PA ;
Whittet, DCB ;
Ehrenfreund, P ;
Boogert, ACA ;
Tielens, AGGM ;
Schutte, WA ;
Chiar, JE ;
van Dishoeck, EF ;
Prusti, T ;
Helmich, FP ;
de Graauw, T .
ASTROPHYSICAL JOURNAL, 1999, 522 (01) :357-377
[12]  
Gerakines PA, 2000, ASTRON ASTROPHYS, V357, P793
[13]  
GERAKINES PA, 2001, IN PRESS ICARUS
[14]  
Greenberg J.M., 1982, IAU C 61 COMET DISCO, P131
[15]  
Greenberg JM, 1998, ASTRON ASTROPHYS, V332, P374
[16]   FAR-IR SPECTRAL CHANGES ACCOMPANYING PROTON IRRADIATION OF SOLIDS OF ASTROCHEMICAL INTEREST [J].
HUDSON, RL ;
MOORE, MH .
RADIATION PHYSICS AND CHEMISTRY, 1995, 45 (05) :779-789
[17]   IR spectra of irradiated cometary ice analogues containing methanol: a new assignment, a reassignment, and a nonassignment [J].
Hudson, RL ;
Moore, MH .
ICARUS, 2000, 145 (02) :661-663
[18]   THERMAL DECOMPOSITION OF HEXAMETHYLENE TETRAMINE [J].
IWAKAMI, Y ;
TAKAZONO, M ;
TSUCHIYA, T .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1968, 41 (04) :813-+
[19]   AN EXTENDED SOURCE FOR CN JETS IN COMET P-HALLEY [J].
KLAVETTER, JJ ;
AHEARN, MF .
ICARUS, 1994, 107 (02) :322-334
[20]   Infrared study of ion-irradiated water-ice mixtures with hydrocarbons relevant to comets [J].
Moore, MH ;
Hudson, RL .
ICARUS, 1998, 135 (02) :518-527