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Ann L. Sprague

University of Maryland, College Park

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Featured researches published by Ann L. Sprague.

Archive | 2009

Surface Composition and Chemistry of Mercury: Hapke Modeling of MESSENGER/MASCS Reflectance Spectra

Johan Warell; Ann L. Sprague; Richard W. H. Kozlowski; J. Helbert

Archive | 2013

Unsupervised clustering analysis of spectral data for the Rudaki area on Mercury

M. D'Amore; J. Helbert; Alessandro Maturilli; Ann L. Sprague; Noam R. Izenberg; Gregory M. Holsclaw; William E. McClintock; Harald Hiesinger; Sean C. Solomon

Archive | 2011

Early MESSENGER Results for Less Abundant or Weakly Emitting Species in Mercury's Exosphere

Ronald Joe Vervack; William E. McClintock; Rosemary M. Killen; Ann L. Sprague; Matthew H. Burger; A. W. Merkel; Menelaos Sarantos

Archive | 2009

Mercury's Exosphere During MESSENGER's Second Flyby: Detection of Magnesium and Distinct Distributions of Neutral Species

William E. McClintock; Ronald Joe Vervack; E. Todd Bradley; Rosemary M. Killen; Nelly Mouawad; Ann L. Sprague; Matthew H. Burger; Sean C. Solomon; Noam R. Izenberg

Archive | 2009

Gamma-Ray Spectrometer Measurements at Mercury During the MESSENGER Flybys

Edgar A. Rhodes; Larry G. Evans; John O. Goldsten; Larry R. Nittler; Richard D. Starr; William V. Boynton; Ann L. Sprague; D. J. Lawrence; Sean C. Solomon

Archive | 2008

Topography of Mercury from Imaging Data

Robert W. Gaskell; Jeffrey J. Gillis-Davis; Ann L. Sprague

Archive | 2012

Global Classification of MESSENGER Spectral Reflectance Data and a Detailed Look at Rudaki Plains

M. D'Amore; J. Helbert; Alessandro Maturilli; James W. Head; Ann L. Sprague; Noam R. Izenberg; Gregory M. Holsclaw; William E. McClintock; Faith Vilas; Sean C. Solomon

Archive | 2011

Calcium in Mercury's Exosphere: Modeling MESSENGER Data

Matthew H. Burger; Rosemary M. Killen; William E. McClintock; A. W. Merkel; Ronald Joe Vervack; Menelaos Sarantos; Ann L. Sprague

Archive | 2010

Electron Stimulated Desorption as a Source Mechanism for Ions in Mercury's Space Environment

Thomas M. Orlando; Ann L. Sprague; Gregory Grieves; David Schriver; Pavel M. Travnicek; Jason McLain; Richard D. Starr

Archive | 2009

MESSENGER Observations of Mercury's Exosphere: Discoveries and Surprises from the First Two Flybys

Ronald Joe Vervack; William E. McClintock; Eric Todd Bradley; Rosemary M. Killen; Ann L. Sprague; Nelly Mouawad; Noam R. Izenberg; M. C. Kochte; Mark R. Lankton

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