2018A&A...616A.150F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST19:17:50

2018A&A...616A.150F - Astronomy and Astrophysics, volume 616A, 150-150 (2018/8-1)

HNCO-based synthesis of formamide in planetary atmospheres.

FERUS M., LAITL V., KNIZEK A., KUBELIK P., SPONER J., KARA J., SPONER J.E., LEFLOCH B., CASSONE G. and CIVIS S.

Abstract (from CDS):

Time-resolved Fourier transform infrared emission spectroscopy, Fourier transform absorption infrared spectroscopy, and high-resolution UV-ViS emission spectroscopy have been used to characterize the chemistry of isocyanic acid (HNCO) under glow discharge conditions in planetary atmospheres. HNCO mixtures (i.e., composed of di-hydrogen or ammonia) have been investigated in order to unveil the possible reaction pathways leading to the synthesis of the key prebiotic molecule formamide (HCONH2), upon planetary atmospheres containing isocyanic acid in presence of di-hydrogen and, separately, of ammonia. In addition, ab initio molecular dynamics simulations coupled with a modern metadynamics technique have been performed in order to identify the most likely chemical pathways connecting HNCO to formamide. It turned out that the direct hydrogenation of HNCO is thermodynamically favored. Incidentally, the experimental results - supplied by a simplified kinetic model - also proved the favorability of the reaction HNCO + H2 - HCONH2 which, moreover, spontaneously takes place in unbiased ab initio molecular dynamics simulations carried out under the effect of intense electric fields.

Abstract Copyright: © ESO 2018

Journal keyword(s): astrochemistry - astrobiology - planets and satellites: atmospheres - ISM: molecules

VizieR on-line data: <Available at CDS (J/A+A/616/A150): fig2a.dat fig2b.dat fig2bd.dat fig2c.dat fig3.dat>

Simbad objects: 4

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Number of rows : 4

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 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1359 0
2 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 681 0
3 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
4 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1909 1

    Equat.    Gal    SGal    Ecl

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2020.07.14-19:17:50

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