Union (U)
Session Sub-category Union
Session ID U-17
Title Biogeochemistry of CO world
Short Title Biogeochemistry of CO world
Main Convener Name Yuichiro Ueno
Affiliation Department of Earth and Planetary Sciences, Institute of Science Tokyo
Co-Convener 1 Name Shino Suzuki
Affiliation RIKEN
Co-Convener 2 Name Kazumi Ozaki
Affiliation Institute of Science Tokyo
Co-Convener 3 Name Norio Kitadai
Affiliation Japan Agency for Marine-Earth Science and Technology
Session Language 
J
Scope 
In this session, we will discuss the impact of carbon chemical species (CO2/CO/CH4) on the planetary evolution, prebiotic chemistry, and biological metabolism with the ultimate goal of elucidating the planetary setting suitable for the emergence of life. Following astronomical observations and planetary explorations identifying a growing number of extraterrestrial bodies that are potentially capable of sustaining life, search for lives in Universe has already begun. However, the fundamental question - what planetary conditions are crucial for the emergence of life - remains unsolved. In particular, although carbon monoxide (CO) must have been an abundant atmospheric component on the early Earth and Mars, its role in prebiotic and early metabolic processes are not well understood. Here, we seek for diverse research subjects on these topics. We also welcome discussions on future exploration of extraterrestrial lives based on the CO world concept.
Presentation Format Oral and Poster presentation
Time Presentation No Title Presenter
Oral Presentation May 25 PM1
13:45 - 14:00 U17-01 Stellar control on atmospheric carbon chemistry, CO runaway, and organic synthesis on lifeless Earth-like planets Kazumi Ozaki
14:00 - 14:15 U17-02 Atmospheric origin of 13C-enrichment in Martian carbonates inferred from photochemical modeling Shungo Koyama
14:15 - 14:45 U17-03 Aldehydes and oxidant synthesized from CO2/CO/H2O atmospheres Yuichiro Ueno
14:45 - 15:00 U17-04 Incorporation of NH3 into the proto-metabolism initiated from aldehydes supplied from the early atmosphere Xiaofeng Zang
15:00 - 15:15 U17-05 Thermodynamics of protometabolism in water Norio Kitadai
Oral Presentation May 25 PM2
15:30 - 15:45 U17-06 Computational Studies on the Catalytic Roles of Formic Acid in Formation of Initial Biomolecules Tomoki Nakayoshi
15:45 - 16:00 U17-07 Using the Genetic Algorithm to Determine the Kinetic Mechanism of Chemical Reaction Networks Hideshi Ooka
16:00 - 16:15 U17-08 Abiotic carbonyl sulfide formation in water at room temperature: a radical-mediated pathway on magnetite surfaces Shotaro Tagawa
16:15 - 16:30 U17-09 Electricity utilization by electroactive Shewanella sp. EC-1 isolated from a deep-sea hydrothermal field Masahiro Yamamoto
16:30 - 16:45 U17-10 Interaction between defect-introduced FeS2 (pyrite) surfaces and small Molecules: a study using surface spectroscopy and first-principles calculations Jun Yoshinobu
16:45 - 17:00 U17-11 Effect of Cl– ion on photocatalytic chemical evolution in CO world Yamada Yusuke
Presentation No Title Presenter
Poster Presentation May 25 PM3
U17-P01 Experimental study on the recycling of glycolaldehyde through oxidation reaction in prebiotically plausible conditions Yuta Asakura
U17-P02 Investigation of abiotic synthesis of the nucleosides by the solar energetic particle irradiation on the surface and in the atmosphere of celestial bodies based on laboratory experiments Koharu Fukazawa
U17-P03 Quantum Chemical Calculations on Metal-Catalyzed Deamidation of Asparagine Residues as Proteinogenic Amino Acids Ayato Mizuno
U17-P04 Coupled photochemistry-ecosystem modeling of reducing Earth-like planets: Implications for methane-based biosignatures Tomoya Kimura
U17-P05 Retention of an NH3-rich Surface Environment on Early Mars via Ocean Dissolution Hiroto Kizu
U17-P06 Reproduction of South Coast Low-Pressure Systems Using Machine Learning Models Komori Yuichiro
U17-P07 Coupled Climate and Sulfur Photochemistry in the Archean Atmosphere under Variable Volcanic Outgassing Tetsuo Taki