Goddard Authors: Pavlov, Alexander Anatolevich Author Record Pavlov, Alexander Anatolevich Pavlov Alexander Anatolevich NASA Atmospheric Experiments Lab 699.0 NASA Employee Space Scientist 2010- <![CDATA[PLANETARY PROTECTION AND THE ASTROBIOLOGICAL EXPLORATION OF MARS: PROACTIVE STEPS IN MOVING FORWARD]]> <![CDATA[BACKGROUND LEVELS OF METHANE IN MARS' ATMOSPHERE SHOW STRONG SEASONAL VARIATIONS]]> <![CDATA[CHAIN FORMATION AS A MECHANISM FOR MASS-INDEPENDENT FRACTIONATION OF SULFUR ISOTOPES IN THE ARCHEAN ATMOSPHERE]]> <![CDATA[DYNAMICAL MASSES OF M-DWARF BINARIES IN YOUNG MOVING GROUPS I. THE CASE OF TWA22 AND GJ2060]]> <![CDATA[RESOLVING FAINT STRUCTURES IN THE DEBRIS DISK AROUND TWA 7 TENTATIVE DETECTIONS OF AN OUTER BELT, A SPIRAL ARM, AND A DUSTY CLOUD]]> <![CDATA[LARGE SULFUR ISOTOPE FRACTIONATIONS IN MARTIAN SEDIMENTS AT GALE CRATER]]> <![CDATA[IN SITU MEASUREMENT OF ATMOSPHERIC KRYPTON AND XENON ON MARS WITH MARS SCIENCE LABORATORY]]> <![CDATA[IMPRINT OF ATMOSPHERIC EVOLUTION IN THE D/H OF HESPERIAN CLAY MINERALS ON MARS]]> <![CDATA[MARS METHANE DETECTION AND VARIABILITY AT GALE CRATER]]> <![CDATA[ORGANIC MOLECULES IN THE SHEEPBED MUDSTONE, GALE CRATER, MARS]]> <![CDATA[ABUNDANCES AND IMPLICATIONS OF VOLATILE-BEARING SPECIES FROM EVOLVED GAS ANALYSIS OF THE ROCKNEST AEOLIAN DEPOSIT, GALE CRATER, MARS]]> <![CDATA[ALTERATION OF THE CARBON AND NITROGEN ISOTOPIC COMPOSITION IN THE MARTIAN SURFACE ROCKS DUE TO COSMIC RAY EXPOSURE]]> <![CDATA[IN SITU RADIOMETRIC AND EXPOSURE AGE DATING OF THE MARTIAN SURFACE]]> <![CDATA[VOLATILE AND ORGANIC COMPOSITIONS OF SEDIMENTARY ROCKS IN YELLOWKNIFE BAY, GALE CRATER, MARS]]> <![CDATA[EVIDENCE FOR PERCHLORATES AND THE ORIGIN OF CHLORINATED HYDROCARBONS DETECTED BY SAM AT THE ROCKNEST AEOLIAN DEPOSIT IN GALE CRATER]]> <![CDATA[INFLUENCE OF COSMIC RAYS ON BIOMARKERS ON THE MARS]]> <![CDATA[DEGRADATION OF THE ORGANIC MOLECULES IN THE SHALLOW SUBSURFACE OF MARS DUE TO IRRADIATION BY COSMIC RAYS]]> <![CDATA[SAMPLE ANALYSIS AT MARS INVESTIGATION AND INSTRUMENT SUITE]]> <![CDATA[FORMATION OF LIQUID WATER IN THE SHALLOW SUBSURFACE UNDER SIMULATED MARTIAN CONDITIONS]]> <![CDATA[GROWTH OF MICROORGANISMS IN MARTIAN-LIKE SHALLOW SUBSURFACE CONDITIONS: LABORATORY MODELLING]]>