Results 41 to 50 of about 15,098 (153)

A Critical Examination of the X-Wind Model for Chondrule and Calcium-rich, Aluminum-rich Inclusion Formation and Radionuclide Production

, 2010
Meteoritic data, especially regarding chondrules and calcium-rich, aluminum-rich inclusions (CAIs), and isotopic evidence for short-lived radionuclides (SLRs) in the solar nebula, potentially can constrain how planetary systems form.
Alan P. Boss, Anderson, Bacciotti, Beckett, Beckett, Blandford, Boley, Boss, Boss, Boss, Bouvier, Chevalier, Chiang, Ciesla, Coffey, Connelly, Connolly, Connolly, Connolly, Cuzzi, Cuzzi, Cuzzi, Cuzzi, Davis, Desch, Desch, Desch, Desch, Desch, Dodd, Dominik, Ebel, Eisner, Fedkin, Fedkin, Feigelson, Fitoussi, Gaidos, Getman, Gooding, Goswami, Goswami, Gounelle, Gounelle, Gounelle, Grossman, H. C. Connolly, Harker, Hewins, Hewins, Hewins, Hsu, Huss, Jacobsen, Jacobsen, Jones, Jones, Jones, Jones, Kita, Kita, Kita, Klerner, Koyama, Krot, Königl, Lauretta, Lee, Lee, Lee, Lee, Levy, Leya, Liffman, Liu, Lodders, Lofgren, Looney, M. A. Morris, MacPherson, MacPherson, MacPherson, McKeegan, Meibom, Meyer, Miura, Morris, Murty, Ouellette, Ouellette, Ouellette, Palme, Paque, Paque, Pilipp, Preibisch, Pudritz, Ray, Russell, Russell, S. J. Desch, Sahijpal, Sanders, Sargent, Scott, Shu, Shu, Shu, Simon, Simon, Skinner, Srinivasan, Tachibana, Takigawa, Teitler, Tominaga, Umeda, Umeda, Ushikubo, Vanhala, Wadhwa, Wadhwa, Ward-Thompson, Wasserburg, Wasserburg, Weidenschilling, Weidenschilling, Weisberg, Yu   +128 more
core   +1 more source

Microspherules Formed by Lightning Strikes

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

CI chondrite Oued Chebeika 002 links asteroids Bennu and Ryugu to common parent body

Meteoritics &Planetary Science, EarlyView.
Abstract CI chondrites are a compositionally primitive group of meteorites that have undergone extensive aqueous alteration, providing insights into the evolution of primitive planetesimals. Oued Chebeika 002 is the most pristine CI chondrite to date.
Megan Broussard, Katharina Lodders, Paul K. Carpenter, Piers Koefoed, Karen Ziegler, Kunihiko Nishiizumi, Marc W. Caffee, Laurence A. J. Garvie, Ryan C. Ogliore, Anthony J. Irving, Bradley L. Jolliff, Kun Wang   +11 more
wiley   +1 more source

The Pressure and Temperature Limits of Likely Rocky Exoplanets

, 2019
The interior composition of exoplanets is not observable, limiting our direct knowledge of their structure, composition, and dynamics. Recently described observational trends suggest that rocky exoplanets, that is, planets without significant volatile ...
Panero, Wendy R., Unterborn, Cayman T.
core   +1 more source

Ryugu Reference Project: Recommendations from the Measurement Definition Team

Meteoritics &Planetary Science, EarlyView.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Revisiting the pre-main-sequence evolution of stars II. Consequences of planet formation on stellar surface composition

, 2018
We want to investigate how planet formation is imprinted on stellar surface composition using up-to-date stellar evolution models. We simulate the evolution of pre-main-sequence stars as a function of the efficiency of heat injection during accretion ...
Guillot, Tristan, Ida, Shigeru, Kunitomo, Masanobu, Takeuchi, Taku   +3 more
core   +1 more source

The Form of Agency

Noûs, EarlyView.
ABSTRACT Philosophers often think agency is essentially connected with rationality, intention, or control. However, Minimalists argue that agency is just the power to cause a change; acids and boulders are agents too. Many philosophers treat Minimalism as a wild outlier, assuming its falsity without argument.
William Hornett
wiley   +1 more source

“Strange can be quite normal”: How the environmental crisis becomes present in Han Kang's and Samanta Schweblin's “constructively alienating” environmental fiction

Orbis Litterarum, EarlyView.
Abstract This article presents the concept “constructive alienation” as a response to the oversaturation of apocalyptic environmental fiction that has contributed to deep‐seated desensitization toward the climate crisis, resulting in crisis of imagination (Ghosh, The Great Derangement: Climate change and the unthinkable, 2016; Solnit, If you win the ...
Agnethe Brounbjerg Bennedsgaard
wiley   +1 more source

High-precision analysis of binary stars with planets. I. Searching for condensation temperature trends in the HD 106515 system

, 2019
We explore the probable chemical signature of planet formation in the remarkable binary system HD 106515. The A star hosts a massive long-period planet with 9 MJup detected by radial velocity.
Arancibia, M. Jaque, Collado, A., Flores, M., Jofre, E., Lopez, F. M., Miquelarena, P., Saffe, C.   +6 more
core   +1 more source

Toward a “strong” normativity of fear in Hans Jonas and Aristotle

The Southern Journal of Philosophy, EarlyView.
Abstract What does it mean to say that one “ought” to undergo an emotion? In The Imperative of Responsibility, Hans Jonas provocatively asserts that twentieth‐century citizens “ought” to fear for the well‐being of future generations. I argue that Jonas's demand is not straightforwardly reducible to claims about the fittingness, expedience, or aretaic ...
Magnus Ferguson
wiley   +1 more source