The curious case of Mercury's internal structure
Steven A. Hauck,Jean-Luc Margot,Sean C. Solomon,Sean C. Solomon,Roger J. Phillips,Catherine L. Johnson,Catherine L. Johnson,Frank G. Lemoine,Erwan Mazarico,Timothy J. McCoy,Sebastiano Padovan,Stanton J. Peale,Mark E. Perry,David E. Smith,Maria T. Zuber +14 more
Reads0
Chats0
TLDR
In this article, NASA MESSENGER Participating Scientist grant NNX07AR77G was used to conduct a study on the effects of solar arrays on the performance of the spacecraft.Abstract:
United States. National Aeronautics and Space Administration (NASA MESSENGER Participating Scientist grant NNX07AR77G)read more
Citations
More filters
Journal ArticleDOI
Can we constrain the interior structure of rocky exoplanets from mass and radius measurements
Caroline Dorn,Amir Khan,Kevin Heng,James A. D. Connolly,Yann Alibert,Willy Benz,Paul J. Tackley +6 more
TL;DR: In this paper, an inversion method based on Bayesian analysis is proposed to constrain the interior structure of terrestrial exoplanets, in the form of chemical composition of the mantle and core size.
Large Longitude Libration of Mercury Reveals a Molten Core
TL;DR: Observations of radar speckle patterns tied to the rotation of Mercury establish that the planet occupies a Cassini state with obliquity of 2.11 ± 0.1 arc minutes, and indicate that the mantle of Mercury is decoupled from a core that is at least partially molten.
Journal ArticleDOI
Can we constrain interior structure of rocky exoplanets from mass and radius measurements
Caroline Dorn,Amir Khan,Kevin Heng,Yann Alibert,James A. D. Connolly,Willy Benz,Paul J. Tackley +6 more
TL;DR: In this paper, an inversion method based on Bayesian analysis is proposed to constrain the interior structure of terrestrial exoplanets, in the form of chemical composition of the mantle and core size.
Journal ArticleDOI
A rocky composition for an Earth-sized exoplanet
Andrew W. Howard,Roberto Sanchis-Ojeda,Geoffrey W. Marcy,John Asher Johnson,Joshua N. Winn,Howard Isaacson,Debra A. Fischer,Benjamin J. Fulton,E. Sinukoff,Jonathan J. Fortney +9 more
TL;DR: Doppler spectroscopic measurements of the mass of the Earth-sized planet Kepler-78b are reported, which is similar to Earth’s, suggesting a composition of rock and iron.
Journal ArticleDOI
Evidence for geochemical terranes on Mercury: Global mapping of major elements with MESSENGER's X-Ray Spectrometer
Shoshana Z. Weider,Larry R. Nittler,R. D. Starr,E. J. Crapster-Pregont,E. J. Crapster-Pregont,Patrick N. Peplowski,Brett W. Denevi,James W. Head,Paul K. Byrne,Paul K. Byrne,Steven A. Hauck,Denton S. Ebel,Denton S. Ebel,Sean C. Solomon,Sean C. Solomon +14 more
TL;DR: In this article, the major-element composition of the surface of Mercury was mapped from orbital MESSENGER X-Ray Spectrometer measurements, and the results revealed highly variable compositions (e.g., Mg/Si and Al/Si range over 0.1 − 0.8 and 0.4, respectively).
References
More filters
Book
Inverse Problem Theory and Methods for Model Parameter Estimation
TL;DR: This chapter discusses Monte Carol methods, the least-absolute values criterion and the minimax criterion, and their applications to functional inverse problems.
Book
Probability and Statistics for Engineering and the Sciences
TL;DR: In this article, the authors present a comprehensive overview of the statistical properties of point estimates and their relationship with the probability of a given point in a single-sample set of data.
Book
Introduction to the Physics of the Earth's Interior
TL;DR: The physics of the Earth's interior has become a recognized discipline within solid earth geophysics and an important part of the current geophysical literature as discussed by the authors, but until now, there was no self-contained book that provided the background information necessary to understand the widely dispersed and sometimes controversial research about the structure, composition, or temperature of the deep Earth.
Journal ArticleDOI
Mineralogical and chemical relationships among enstatite chondrites
TL;DR: In this paper, 15 enstatite chondrites were studied microscopically in reflected and transmitted light, and their modal compositions were determined by point-counting techniques.
Journal ArticleDOI
The Major-Element Composition of Mercury’s Surface from MESSENGER X-ray Spectrometry
Larry R. Nittler,R. D. Starr,Shoshana Z. Weider,Timothy J. McCoy,William V. Boynton,Denton S. Ebel,Carolyn M. Ernst,Larry G. Evans,John O. Goldsten,D. K. Hamara,David J. Lawrence,Ralph L. McNutt,C. E. Schlemm,Sean C. Solomon,Ann L. Sprague +14 more
TL;DR: X-ray fluorescence spectra obtained by the MESSENGENGER spacecraft orbiting Mercury indicate that the planet's surface differs in composition from those of other terrestrial planets as discussed by the authors, and this observation, together with a low surface Fe abundance, supports the view that Mercury formed from highly reduced precursor materials, perhaps akin to enstatite chondrite meteorites or anhydrous cometary dust particles.
Related Papers (5)
Gravity Field and Internal Structure of Mercury from MESSENGER
David E. Smith,Maria T. Zuber,Roger J. Phillips,Sean C. Solomon,Steven A. Hauck,Frank G. Lemoine,Erwan Mazarico,Erwan Mazarico,Gregory A. Neumann,Stanton J. Peale,Jean-Luc Margot,Catherine L. Johnson,Catherine L. Johnson,Mark H. Torrence,Mark E. Perry,David D. Rowlands,Sander Goossens,James W. Head,A. Taylor +18 more