2021A&A...656A..80H


Query : 2021A&A...656A..80H

2021A&A...656A..80H - Astronomy and Astrophysics, volume 656A, 80-80 (2021/12-1)

Gas-phase laboratory formation of large, astronomically relevant PAH-organic molecule clusters.

HU X., YANG Y., ZHANG C., CHEN Y., ZHEN J. and QIN L.

Abstract (from CDS):

Polycyclic aromatic hydrocarbon (PAH) molecules may play an essential role in the prebiotic compound evolution network in interstellar clouds. In this work, an experimental study of large, astronomically relevant PAH-organic molecule clusters is presented. With the initial molecular precursors dicoronylene (DC; C48H20)-pyroglutamic acid (Pga, C5H7NO3), DC-proline (Pro; C5H9NO2), and DC-pyroglutaminol (Pgn; C5H9NO2), our experiments indicate that PAH-organic molecule cluster cations (e.g., (Pga)(1–2)C48Hn+, (Pro)(1–2)C48Hn+, and (Pgn)(1–6)C48Hn+ and carbon cluster-organic molecule cluster cations (e.g., (Pga)C48+_, (Pro)(1–2)C48+, and (Pgn)(1–6)C48+_) are gradually formed through an ion-molecule collision reaction pathway in the presence of a strong galactic interstellar radiation field. These laboratory studies provide a gas-phase growth route toward the formation of complex prebiotic compounds in a bottom-up growth process, as well as insight into their chemical-evolution behavior in the interstellar medium.

Abstract Copyright: © ESO 2021

Journal keyword(s): astrochemistry - molecular processes - methods: laboratory: molecular - ultraviolet: ISM - ISM: molecules

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 - 2023
#notes
1 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1567 0
2 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 1787 1
3 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 624 1
4 IRAS 18449-0115 cor 18 47 34.29 -01 12 44.5           ~ 366 0

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2023.01.30-22:12:05

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