496 citations
- Planetary Science InstituteUS47 papers
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6 papers · 1 filter
Debris Distribution in HD 95086 - A Young Analog of HR 8799
Kate Y. L. Su, Sarah Morrison, Renu Malhotra +3
HD 95086 is a young early-type star that hosts (1) a 5 MJ planet at the projected distance of 56 AU revealed by direct imaging, and (2) a prominent debris disk. Here we report the…
Do the constants of nature couple to strong gravitational fields?
S. P. Preval, M. A. Barstow, J. B. Holberg +5
Recently, white dwarf stars have found a new use in the fundamental physics community. Many prospective theories of the fundamental interactions of Nature allow traditional constan…
A possible solution to the Lyman/Balmer line problem in hot DA white dwarfs
S. P. Preval, M. A. Barstow, N. R. Badnell +2
Arguably, the best method for determining the effective temperature () and surface gravity (log ) of a DA white dwarf is by fitting the Hydrogen Lyman and Balm…
Constraining the Cratering Chronology of Vesta
David P. O'Brien, Simone Marchi, Alessandro Morbidelli +4
Vesta has a complex cratering history, with ancient terrains as well as recent large impacts that have led to regional resurfacing. Crater counts can help constrain the relative ag…
Constraints on planetesimal disk mass from the cratering record and equatorial ridge on Iapetus
Edgard G. Rivera-Valentin, Amy C. Barr, Erika J. Lopez Garcia +2
Iapetus, the outermost regular satellite of Saturn, has a drastic albedo dichotomy and an equatorial circumferential ridge that reaches heights of 20 km and widths of 70 km. This m…
Topographic Constraints on the Origin of the Equatorial Ridge on Iapetus
Erika Lopez Garcia, Edgard G. Rivera-Valentin, Paul M. Schenk +2
Saturn's moon Iapetus has an equatorial ridge system, which may be as high as 20 km, that may have formed by endogenic forces, such as tectonic and convective forces, or exogenic p…