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FORMATION of HABITABLE WORLDS and FATE of HABITABLE ENVIRONMENTS 6:00 P.M 45th Lunar and Planetary Science Conference (2014) sess726.pdf Thursday, March 20, 2014 [R726] POSTER SESSION: FORMATION OF HABITABLE WORLDS AND FATE OF HABITABLE ENVIRONMENTS 6:00 p.m. Town Center Exhibit Area Johnson T. A. Park A. Hand K. P. POSTER LOCATION #473 The Workman-Reynolds Effect: An Investigation of the Ice-Water Interface of Dilute Salt Solutions [#1672] We report on experiments on the voltage potential that results from rapidly freezing dilute aqueous solutions. These results have application to icy satellites. Taylor A. R. Olsen A. A. Hausrath E. M. POSTER LOCATION #474 Serpentinite Dissolution: An Analog to Mantle-Ocean Interaction on Europa [#1903] Laboratory-based dissolution experiments between serpentinite rock and a variety of acids represent mantle-ocean interaction on the jovian moon, Europa. Hausrath E. M. Adcock C. T. Elwood Madden M. E. Gainey S. R. Olsen A. A. et al. POSTER LOCATION #475 Using Geochemical Kinetics to Interpret Potential Habitability [#2376] Geochemical kinetics can help shed light on factors affecting habitability, including water, release of nutrients, redox, pH, temperature, and ionic strength. Som S. M. Fristad K. E. Hoehler T. M. POSTER LOCATION #476 An Integrative Approach to Assessing Habitability of H2 Metabolisms in Hydrothermal Springs [#2828] We present an ongoing project that surveys H2 from springs sourced in rocks of varying silica content and in parallel investigate habitability numerically. Djordjevic S. Mickol R. L. Kral T. A. POSTER LOCATION #477 Simulating Martian Conditions: Methanogen Survivability During Freeze-Thaw Cycles [#2539] Methanogens are obligate anaerobes that tolerate a wide range of conditions. It is proposed that these Archaea are able to persist in a martian environment. Mickol R. L. Kral T. A. POSTER LOCATION #478 Approaching Martian Conditions: Methanogen Survival at Low Pressure [#1602] Four stains of methanogen were subjected to pressures of 67 mbar and 33 mbar in order to test survivability at conditions approaching martian pressures. Mickol R. L. Kral T. A. Laird S. K. POSTER LOCATION #479 Mesophile Methanogen Survival Under Freeze/Thaw Cycles [#1603] Two methanogen strains were subjected to freeze/thaw cycles between 55°C and –80°C to test survivability under martian temperature variations. Buch A. Szopa C. Freissinet C. Glavin D. P. Coll P. et al. POSTER LOCATION #480 Impact of the Sample Preparation on the Organic Compounds Detetected on Mars at JK and CB [#2886] Impact of the sample preparation on the organic compounds detetected on Mars at JK and CB. Buch A. Pinnick V. Szopa C. Mahaffy P. POSTER LOCATION #481 MOMA GC-MS Coupling [#2907] MOMA GCMS coupling. Komatsu G. Ishimaru R. Miyake N. Ohno S. Matsui T. POSTER LOCATION #482 Astrobiological Potential of Mud Volcanism on Mars [#1085] Martian mud volcanos involving water and gas provide potential landing sites for astrobiological missions, representing windows to the subsurface and the past. 45th Lunar and Planetary Science Conference (2014) sess726.pdf Jänchen J. Herzog T. H. Meessen J. Ott S. Feist M. et al. POSTER LOCATION #483 Impact of UVC Exposure on the Water Retention of the Lichen Buellia Frigieda [#1260] We investigate the impact of irradiation on the water retention properties of lichen within the frame of the Biology and Mars Experiment (BIOMEX) at the ISS. Barcena H. S. Chen P. Connolly H. C. Jr. POSTER LOCATION #484 Microwave Synthesis of Sugars [#2459] Microwave irradiation of ices of formaldehyde and calcium chloride yielded sugars, which were studied by 2- D NMR spectroscopy. Sandford S. A. Nuevo M. Materese C. K. POSTER LOCATION #485 Formation of Nucleobases from the UV Irradiation of Pyrimidine in Astrophysical Ice Analogs [#2461] We discuss how the nucleobases uracil, cytosine, and thymine can be made abiotically during ice photolysis. Asaduzzaman A. M. Zega T. J. Runge K. Muralidharan K. POSTER LOCATION #486 Synthesis and Delivery of Amino Acids to the Early Earth via Surface Catalysis: A Computational Study [#1647] Surface-catalyzed synthesis of amino acid is studied using quantum chemical calculation; a possible mechanism for amino acid on early Earth. Tissot F. L. H. Go B. M. Dauphas N. Asael D. Reinhard C. T. et al. POSTER LOCATION #487 On the 238U/235U Paleoredox Proxy: A Word of Caution with Black Shales and the Need for Sequential Leaching of Carbonates [#2590] On the U paleoredox proxy we show (1) how to handle detrital contamination and (2) that bulk carbonates can record the δ238U value of the seawater they form from. Pasini D. L. S. Price M. C. Burchell M. J. Cole M. J. POSTER LOCATION #488 Survival of the Tardigrade Hypsibius Dujardini During Hypervelocity Impact Events up to 3.23 km s–1 [#1789] We show for the first time that a complex multicellular microanimal (the tardigrade Hypsibius dujardini) can survive hypervelocity impacts up to 3.23 km/s. Kohler E. Mickol R. L. Lacy C. Chevrier V. Kral T. POSTER LOCATION #489 Using a Grey Body Model to Determine Metal Cloud Development in Extrasolar Atmospheres [#2290] A simple radiative-convective model was created to determine thermal profiles and metal cloud development for extrasolar planets. Kurokawa H. Kaltenegger L. Nakamoto T. POSTER LOCATION #490 Mass-Loss Evolution of Super-Earths: Effects of Stellar Types [#1355] We show evolution of super-Earths with H/He envelopes, considering XUV-driven escape and Roche-lobe overflow. Their compositions are shaped by mass loss. .
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