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Two Different Sources of Water for the Early Solar Nebula

Kupper, Stefan and Tornow, Carmen and Gast, Philipp (2012) Two Different Sources of Water for the Early Solar Nebula. Origins of Life and Evolution of Biospheres, 42 (2-3), 81 bis 92 . Springer. DOI: 10.1007/s11084-012-9280-7 ISSN 0169-6149

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Official URL: http://link.springer.com/article/10.1007%2Fs11084-012-9280-7


Water is essential for life. This is a trivial fact but has profound implications since the forming of life on the early Earth required water. The sources of water and the related amount of delivery depend not only on the conditions on the early Earth itself but also on the evolutionary history of the solar system. Thus we ask where and when water formed in the solar nebula—the precursor of the solar system. In this paper we explore the chemical mechanics for water formation and its expected abundance. This is achieved by studying the parental cloud core of the solar nebula and its gravitational collapse. We have identified two different sources of water for the region of Earth’s accretion. The first being the sublimation of the icy mantles of dust grains formed in the parental cloud. The second source is located in the inner region of the collapsing cloud core - the so-called hot corino with a temperature of several hundred Kelvin. There, water is produced efficiently in the gas phase by reactions between neutral molecules. Additionally, we analyse the dependence of the production of water on the initial abundance ratio between carbon and oxygen.

Item URL in elib:https://elib.dlr.de/82409/
Document Type:Article
Title:Two Different Sources of Water for the Early Solar Nebula
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kupper, Stefanstefan.kupper (at) dlr.deUNSPECIFIED
Tornow, Carmencarmen.tornow (at) dlr.deUNSPECIFIED
Gast, Philippphilipp.gast (at) dlr.deUNSPECIFIED
Date:June 2012
Journal or Publication Title:Origins of Life and Evolution of Biospheres
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s11084-012-9280-7
Page Range: 81 bis 92
Keywords:Water, Astrochemistry, Prebiotic molecules, Solar nebula, Hot corino
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Tornow, Dr.rer.nat. Carmen
Deposited On:29 May 2013 15:32
Last Modified:06 Sep 2019 15:29

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