P
Pascale Ehrenfreund
Researcher at Leiden University
Publications - 330
Citations - 14671
Pascale Ehrenfreund is an academic researcher from Leiden University. The author has contributed to research in topics: Interstellar medium & Interstellar cloud. The author has an hindex of 59, co-authored 326 publications receiving 13459 citations. Previous affiliations of Pascale Ehrenfreund include NASA Astrobiology Institute & Austrian Academy of Sciences.
Papers
More filters
Journal ArticleDOI
Organic Molecules in the Interstellar Medium, Comets, and Meteorites: A Voyage from Dark Clouds to the Early Earth
TL;DR: Our understanding of the evolution of organic molecules and their voyage from molecular clouds to the early solar system and Earth has changed dramatically as discussed by the authors, and our understanding of molecular evolution has been changed dramatically.
Book ChapterDOI
A voyage from dark clouds to the early Earth
TL;DR: In this article, it is shown that the same chemical pathways are widespread both in the Milky Way and in external galaxies and that the complexity of organic molecules in different space environments is determined by physical and chemical conditions, including density, temperature, ultraviolet radiation and energetic particle flux.
Journal ArticleDOI
An inventory of interstellar ices toward the embedded protostar W33A
Erika L. Gibb,Douglas C. B. Whittet,W. A. Schutte,Adwin Boogert,Adwin Boogert,Jean Chiar,Pascale Ehrenfreund,Perry A. Gerakines,Perry A. Gerakines,Jacqueline V. Keane,Alexander G. G. M. Tielens,E. F. van Dishoeck,O. Kerkhof +12 more
TL;DR: In this paper, a complete 2.4¨25 km spectrum of the dust-embedded young stellar object W33A was obtained with the Short Wavelength Spectrometer of the Infrared Space Observatory at a mean resolving power of D750.
Journal ArticleDOI
Organic compounds on comet 67P/Churyumov-Gerasimenko revealed by COSAC mass spectrometry
Fred Goesmann,H. Rosenbauer,Jan Hendrik Bredehöft,Michel Cabane,Pascale Ehrenfreund,Thomas Gautier,Chaitanya Giri,Chaitanya Giri,Harald Krüger,Léna Le Roy,A. J. MacDermott,Susan McKenna-Lawlor,Uwe J. Meierhenrich,Guillermo M. Muñoz Caro,François Raulin,Reinhard Roll,Andrew Steele,Harald Steininger,Robert Sternberg,Cyril Szopa,Wolfram Thiemann,Stephan Ulamec +21 more
TL;DR: The evolved gas analyzer Cometary Sampling and Composition experiment aboard Rosetta’s Philae lander was designed for in situ analysis of organic molecules on comet 67P/Churyumov-Gerasimenko, and displayed a suite of 16 organic compounds that had not previously been reported in comets.
Journal ArticleDOI
What makes a planet habitable
Helmut Lammer,Jan Hendrik Bredehöft,Athena Coustenis,Maxim L. Khodachenko,Lisa Kaltenegger,Olivier Grasset,Daniel Prieur,François Raulin,Pascale Ehrenfreund,M. Yamauchi,Jan-Erik Wahlund,Jean-Mathias Grießmeier,Günter Stangl,Charles S. Cockell,Yu. N. Kulikov,John Lee Grenfell,Heike Rauer +16 more
TL;DR: In this article, the authors discuss the geodynamical and geophysical environments which are necessary for planets where plate tectonics remain active over geological time scales and for planets which evolve to one-plate planets.