J
Jennifer L. Heldmann
Researcher at Ames Research Center
Publications - 114
Citations - 2619
Jennifer L. Heldmann is an academic researcher from Ames Research Center. The author has contributed to research in topics: Mars Exploration Program & Martian. The author has an hindex of 22, co-authored 105 publications receiving 2240 citations. Previous affiliations of Jennifer L. Heldmann include University of Colorado Boulder & NASA Headquarters.
Papers
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Journal ArticleDOI
Detection of Water in the LCROSS Ejecta Plume
Anthony Colaprete,Peter H. Schultz,Jennifer L. Heldmann,Diane H. Wooden,Mark Shirley,Kimberly Ennico,Brendan Hermalyn,William Marshall,William Marshall,Antonio J. Ricco,Richard C. Elphic,David Goldstein,D. Summy,G. D. Bart,Erik Asphaug,Don Korycansky,David Landis,Luke Sollitt +17 more
TL;DR: The Lunar Crater Observation and Sensing Satellite (LCROSS) mission was designed to provide direct evidence that water ice may be presented in permanently shadowed craters of the Moon, and spectral bands of a number of other volatile compounds were observed.
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Observations of martian gullies and constraints on potential formation mechanisms
TL;DR: In this article, the authors analyzed data from the Mars Global Surveyor spacecraft to uncover trends in the dimensional and physical properties of the martian gullies and their surrounding terrain, including apparent source depth and distribution, vertical and horizontal dimensions, slopes, orientations, and present-day characteristics that affect local ground temperatures.
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Formation of Martian Gullies by the Action of Liquid Water Flowing Under Current Martian Environmental Conditions
Jennifer L. Heldmann,Jennifer L. Heldmann,Owen B. Toon,Wayne H. Pollard,Michael T. Mellon,John Pitlick,Christopher P. McKay,Dale T. Andersen +7 more
TL;DR: In this article, the authors studied the behavior of fluid carving the gullies on Mars and found that they were consistent with formation conditions such as now occur on Mars, outside of the temperature-pressure stability regime of liquid water.
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Observations of martian gullies and constraints on potential formation mechanisms. II. The northern hemisphere
Jennifer L. Heldmann,Ella Carlsson,Ella Carlsson,Henrik Johansson,Michael T. Mellon,Owen B. Toon +5 more
TL;DR: In this article, the authors used thermal conductivities derived from TES measurements as well as modeled surface temperatures to find that 95% of the gully alcove bases with adequate data coverage lie at depths where subsurface temperatures are greater than 273 K.
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Ancient melting of mid-latitude snowpacks on Mars as a water source for gullies
TL;DR: In this article, the authors use the GCM model to predict seasonal mid-latitude snowfall on Mars and find that the regions containing significant snowmelt runoff correspond to the regions identified by Heldmann and Mellon [Heldmann, J.L., Carlsson, E., Johansson, H., Mellon, M.T., Toon, O.C., Edgett, K.J., McCleese, D.J.