White dwarf november 2019 pdf download

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Download references. You can also search for this author in PubMed Google Scholar. Correspondence to Keith D. Peer review information Nature Communications thanks Kara Brugman and the other, anonymous, reviewer s for their contribution to the peer review of this work. Peer reviewer reports are available. Reprints and permissions information is available at www. Reprints and Permissions. Polluted white dwarfs reveal exotic mantle rock types on exoplanets in our solar neighborhood. Nat Commun 12, Download citation.

Received : 15 June Accepted : 27 September Published : 02 November Anyone you share the following link with will be able to read this content:. Sorry, a shareable link is not currently available for this article. Provided by the Springer Nature SharedIt content-sharing initiative. By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Advanced search. Skip to main content Thank you for visiting nature. Download PDF. Subjects Exoplanets Geochemistry. Abstract Prior studies have hypothesized that some polluted white dwarfs record continent-like granitic crust—which is abundant on Earth and perhaps uniquely indicative of plate tectonics. Introduction White dwarfs have received much attention among exoplanet enthusiasts, as more than a quarter accrete rocky material into their photospheres 1 , 2.

Results We find that our 23 PWDs exhibit compositional ranges that exceed that of the inner planets and the more than rocky exoplanet compositions inferred from main sequence stars Fig. Full size image. Discussion Our results verify that PWDs record the accretion of rocky exoplanets, but they also show that those exoplanets associated with PWDs have compositions that are exotic to our Solar System—sufficiently so to require new rock classification schemes to describe their mineral assemblages Fig.

Table 1 Mantle mineral modes and rock types, calculated from bulk silicate planet compositions. Full size table. Data availability All data used for this study are published in the accompanying Extended Data tables, which are also available from the lead author upon request. References 1. ADS Google Scholar Article Google Scholar Acknowledgements K.

Author information Author notes These authors contributed equally: Keith D. Putirka, Siyi Xu. Putirka View author publications. View author publications.