The Photostability of Amino Acids in Space

By Pascale Ehrenfreund, M. Bernstein, Jason P. Dworkin, S. Sandford, L. Allamandola. 2001

195 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/7b5ff2cc08f45cb2ffbe10a253c7065de48e1760

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Ralf I. Kaiser
2. C. Bennett
3. A. Boogert
4. D. Whittet
5. A. Tielens
6. Jason P. Dworkin
7. Y. Bénilan
8. H. Cottin

In Atomic and Molecular Physics, and Optics

1. Ralf I. Kaiser
2. C. Bennett
3. A. Boogert
4. A. Tielens
5. M. Mottl
6. B. Glazer
7. K. Meech
8. D. Whittet

In Spectroscopy

1. Ralf I. Kaiser
2. C. Bennett
3. A. Boogert
4. D. Whittet
5. A. Tielens
6. J. Elsila
7. Jason P. Dworkin
8. R. Garrod

Citations in the corpus

• Radiation effects on the surfaces of the Galilean satellites (2004, background): “The photolysis of methanol in ice produces CO2 (Ehrenfreund et al. 2001).”
• Interstellar Ice: The Infrared Space Observatory Legacy (2004, background): “The infrared vibrational spectra of amino acids exhibit several features that might in principle yield detections (e.g., Ehrenfreund et al. 2001), but quantitative analysis is inhibited by blending with other, far stronger, ice features in interstellar spectra, most notably those of H2O.”
• Mechanisms of Amino Acid Formation in Interstellar Ice Analogs (2007, background): “Interstellar amino acids may have a limited lifetime because of low resistance to ultraviolet (UV) photolysis (Ehrenfreund et al. 2001a); amino acid precursors such as nitriles, however, are more stable and may contribute to the population of meteoritic amino acids (Bernstein et al. 2004).”
• The composition of ices in comet C/1995 O1 (Hale-Bopp) from radio spectroscopy (2004, background): “From laboratory measurement, Ehrenfreund et al. (2001a) have evaluated the lifetime of glycine (and of other amino acids) to be of the order of a few hours in cometary conditions (at 1 AU), which is similar to our default value of 10 000 s.”
• Water and astrobiology (2007, background): “Chemical evolution of extraterrestrial ices and formation of new molecules by UV photons (Allamandola et al., 1999; Ehrenfreund et al., 2001; Gerakines et al., 2001, 1996) and cosmic ray bombardment have been well established (Hudson and Moore, 1999).”
• Cometary glycine detected in samples returned by Stardust (2009, background): “Glycine has not been previously detected in comets, although it has been identified in many carbonaceous meteorites (e.g., Ehrenfreund et al. 2001a; Pizzarello et al. 2006; Martins et al. 2007).”
• Photodestruction of Relevant Interstellar Molecules in Ice Mixtures (2003, methodology): “More recently, Ehrenfreund et al. (2001) published the UV photodestruction rate of amino acids in H2O, N2, and Ar matrices, and Watanabe et al. (2002) measured the conversion rate of CO to CO2 in H2O ice.”
• Amino acid photostability on the Martian surface (2005, background): “The destruction mechanism of glycine, suggested by Ehrenfreund et al. (2001b) starts with the separation of the carboxyl group: hν H2NCH2COOH → Η2ΝCH2⋅ + COOH⋅ Rearrangement of the proton on the H2NCH2⋅ radical would lead to methylamine (CH3NH2) and CO2.”
• A Combined Experimental and Theoretical Study on the Formation of the Amino Acid Glycine (NH2CH2COOH) and Its Isomer (CH3NHCOOH) in Extraterrestrial Ices (2005, background): “Bernstein et al. (2002) and Ehrenfreund et al. (2001) demonstrated that, using unpolarized ultraviolet radiation of an astrophysical ice analog, the amino acids serine and alanine can be produced in a racemic mixture.”