Hot Oxygen and Carbon Escape from the Early Atmosphere of Mars

Ute Amerstorfer1, Hannes Gröller2, Herbert Lichtenegger3, Helmut Lammer3 and Feng Tian4, (1)Austrian Academy of Sciences, Space Research Institute, Vienna, Austria, (2)University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ, United States, (3)Space Research Institute, Austrian Academy of Sciences, Graz, Austria, (4)Tsinghua University, Beijing, China