Výsledky vyhledávání - "Heather B. Franz"

Akademický článek

Evaluating Atmospheric and Surface Drivers for O2 Variations at Gale Crater as Observed by MSL SAM

Autor: Daniel Y. Lo, Sushil K. Atreya, Michael H. Wong, Melissa G. Trainer, Heather B. Franz, Timothy H. McConnochie, Daniel Viúdez-Moreiras, Paul R. Mahaffy, Charles A. Malespin

Publikováno v: The Planetary Science Journal, Vol 5, Iss 3, p 65 (2024)

We explore and evaluate various processes that could drive the variations in the volume mixing ratio (VMR) of atmospheric O _2 observed by the quadrupole mass spectrometer (QMS) of the Sample Analysis at Mars (SAM) instrument suite on the Mars Scienc

Externí odkaz: https://doaj.org/article/43609b8ea99f4dee84757175889c13eb

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Oxidized and Reduced Sulfur Observed by the Sample Analysis at Mars (SAM) Instrument Suite on the Curiosity Rover Within the Glen Torridon Region at Gale Crater, Mars

Autor: Gregory M. Wong, Heather B. Franz, Joanna V. Clark, Amy C. McAdam, James M. T. Lewis, Maëva Millan, Douglas W. Ming, Felipe Gomez, Benton Clark, Jennifer L. Eigenbrode, Rafael Navarro‐González, Christopher H. House

Publikováno v: Journal of Geophysical Research: Planets. 127

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1fb784f3c89cee32d9e341901f161d47
https://doi.org/10.1029/2021je007084

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Reply to Schoell: Implications of a temperature trend in methane evolved from Cumberland during Mars evolved gas analyses experiments

Autor: Christopher H. House, Heather B. Franz, Gregory M. Wong, Paul R. Mahaffy, Alexander Pavlov, Andrew Steele, Sushil Atreya, Charles A. Malespin

Publikováno v: Proceedings of the National Academy of Sciences. 119

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2172869e5b9560e7725a77cc923fe22
https://doi.org/10.1073/pnas.2207901119

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Organic carbon concentrations in 3.5-billion-year-old lacustrine mudstones of Mars

Autor: Jennifer C. Stern, Charles A. Malespin, Jennifer L. Eigenbrode, Christopher R. Webster, Greg Flesch, Heather B. Franz, Heather V. Graham, Christopher H. House, Brad Sutter, Paul Douglas Archer, Amy E. Hofmann, Amy C. McAdam, Douglas W. Ming, Rafael Navarro-Gonzalez, Andrew Steele, Caroline Freissinet, Paul R. Mahaffy

Publikováno v: Proceedings of the National Academy of Sciences. 119

The Sample Analysis at Mars instrument stepped combustion experiment on a Yellowknife Bay mudstone at Gale crater, Mars revealed the presence of organic carbon of Martian and meteoritic origins. The combustion experiment was designed to access refrac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::171a1616e57f75b0911555e8b0ad5c6c
https://doi.org/10.1073/pnas.2201139119

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Depleted carbon isotope compositions observed at Gale crater, Mars

Autor: Christopher H. House, Gregory M. Wong, Christopher R. Webster, Gregory J. Flesch, Heather B. Franz, Jennifer C. Stern, Alex Pavlov, Sushil K. Atreya, Jennifer L. Eigenbrode, Alexis Gilbert, Amy E. Hofmann, Maëva Millan, Andrew Steele, Daniel P. Glavin, Charles A. Malespin, Paul R. Mahaffy

Publikováno v: Proceedings of the National Academy of Sciences of the United States of America

Significance Carbon isotopic analysis is among the most pervasive geochemical approaches because the fractionation of carbon isotopes produces a natural tracer of biological and chemical processes. Rover-based carbon isotopic analyses of sedimentary

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddc20f2eb0ce86676469cb9ea93c0c88
https://doi.org/10.1073/pnas.2115651119

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A new type of isotopic anomaly in shergottite sulfides

Autor: James Farquhar, Heather B. Franz, Anthony J. Irving, Nanping Wu

Publikováno v: Meteoritics & Planetary Science. 54:3036-3051

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4bc4f13462787d405132eaf6f75e5461
https://doi.org/10.1111/maps.13404

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Exploring Solar System Organic Chemistry Evolution through the Surfaces of Ceres and Large Asteroids

Autor: Christopher H. House, José C. Aponte, A. A. Pavlov, Erwan Mazarico, Marc Neveu, Heather B. Franz, Bethany L. Ehlmann, Kris Zacny, Vassilissa Vinogradoff, Julie Castillo-Rogez

Publikováno v: Bulletin of the AAS
Bulletin of the AAS, American Astronomical Society, 2021, 53 (4), ⟨10.3847/25c2cfeb.a6d273d2⟩
Bulletin of the AAS, 2021, 53 (4), ⟨10.3847/25c2cfeb.a6d273d2⟩

International audience; Accessing and characterizing solar system organic material is crucial for understanding the processes by which our Solar System became habitable. Recent surfaces in craters of large asteroids (e.g., Ceres), with diverse ages a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b10caa41768b7b9ac0e66ce2bcf1aba
https://hal.archives-ouvertes.fr/hal-03391948

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Pyrolysis of Oxalate, Acetate, and Perchlorate Mixtures and the Implications for Organic Salts on Mars

Autor: Melissa Guzman, Paul R. Mahaffy, A. Das, R. Williams, Cherie N. Achilles, C. A. Knudson, Slavka Andrejkovičová, Amy McAdam, J. M. T. Lewis, Brad Sutter, E. B. Rampe, Heather B. Franz, Maeva Millan, J. L. Eigenbrode, G. M. Wong, P. D. Archer

Publikováno v: Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2021, ⟨10.1029/2020JE006803⟩
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2021, 126 (4), pp.e2020JE006803. ⟨10.1029/2020JE006803⟩

International audience; Organic salts, such as Fe, Ca, and Mg oxalates and acetates, may be widespread radiolysis and oxidation products of organic matter in Martian surface sediments. Such organic salts are challenging to identify by evolved gas ana

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d826ca4440ca4654f0c78de618fb740c
https://doi.org/10.1029/2020je006803

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