Results 61 to 70 of about 3,429 (163)

Statistical Distribution Function of Orbital Spacings in Planetary Systems

The Astronomical Journal
The minimum orbital separation of planets in long-stable planetary systems is often modeled as a step function, parameterized with a single value ${{\rm{\Delta }}}_{\min }$ (measured in mutual Hill radius of the two neighboring planets).
Jeremy Dietrich, Renu Malhotra, Dániel Apai   +2 more
doaj   +1 more source

Leveraging Multimodal Large Language Models to Analyse Student Exploration Behaviours in Educational Game Environments

Journal of Computer Assisted Learning, Volume 42, Issue 4, August 2026.
ABSTRACT Background Video data provides rich opportunities to examine student behaviour in game‐based learning environments, capturing not only observable actions but also subtle indicators of cognitive engagement. However, traditional video analysis is labor‐intensive, and current applications of AI to this task are limited by models trained on ...
Yiqiu Zhou, Xiner Liu, Andres Felipe Zambrano, Luc Paquette, Amanda Barany, Jaclyn Ocumpaugh, Ryan S. Baker, Jeff Ginger   +7 more
wiley   +1 more source

Gaia astrometry and exoplanetary science: DR2, (E)DR3, and beyond

Comptes Rendus. Physique, 2023
I review the recent impact of Gaia astrometry in the exoplanet field, both in terms of characterization of the orbits and masses of planetary systems and the properties of their host stars.
Sozzetti, Alessandro
doaj   +1 more source

Massive Rocky Planets May Suppress Deep Melting

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Melting properties of silicates are critical to understanding the thermal evolution of rocky planetary interiors. In the deep mantles of massive rocky planets, post‐post‐spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$ is potentially one of the most abundant mineral phases, yet its melting behavior remains unconstrained. Here, we determine the
Donghao Zheng, Yihang Peng, Jie Deng
wiley   +1 more source

KELT-11b: A Highly Inflated Sub-Saturn Exoplanet Transiting theV= 8 Subgiant HD 93396 [PDF]

, 2017
We report the discovery of a transiting exoplanet, KELT-11b, orbiting the bright (V = 8.0) subgiant HD 93396. A global analysis of the system shows that the host star is an evolved subgiant star with Teff = 5370 ± 51K M&z.ast; = 1.438-0.052+0.061 &.
Jensen, Eric L. N., Knicole D. Colón, Benjamin J. Fulton, Colon, Knicole D., Joner, Michael D., Latham, David W., Oberst, Thomas E., Wittenmyer, Robert A., Beatty, Thomas G., Tan, T. G., Robert J. Siverd, Howard, Andrew W., Eric Hintz, Kaloyan Penev, Labadie-Bartz, Jonathan, Thomas G. Beatty, John Kielkopf, Robert A. Wittenmyer, David James, Hintz, Eric, Michael Bottom, Stevens, Daniel J., Kuhn, Rudolf B., Sliski, David H., Eric L. N. Jensen, Keivan G. Stassun, Jonathan Labadie-Bartz, Ivan Curtis, David W. Latham, Eastman, Jason D., Bottom, Michael, Rudolf B. Kuhn, Phillip Cargile, Collins, Karen A., John Asher Johnson, James, David, Joshua Pepper, Kielkopf, John, Siverd, Robert J., Cargile, Phillip, Joseph E. Rodriguez, Johnson, John Asher, Lund, Michael B., Zhou, George, Allyson Bieryla, Andrew W. Howard, Howard M. Relles, Jason T. Wright, Karen A. Collins, Howard Isaacson, Michael B. Lund, Curtis, Ivan, Gaudi, B. Scott, McCrady, Nate, Christopher Stockdale, Wright, Jason T., B. Scott Gaudi, Bayliss, Daniel, Daniel Bayliss, Daniel J. Stevens, Michael D. Joner, T. G. Tan, Penev, Kaloyan, Peter Nelson, Stassun, Keivan G., Bieryla, Allyson, Isaacson, Howard, Stockdale, Christopher, Jason D. Eastman, Pepper, Joshua, Fulton, Benjamin J., David H. Sliski, Rodriguez, Joseph E., Nelson, Peter, George Zhou, Dimitri Mawet, Mawet, Dimitri, Nate McCrady, Thomas E. Oberst, Relles, Howard M.   +79 more
core   +1 more source

Detecting Exoplanet Transits with the Next Generation of X-Ray Telescopes

The Astronomical Journal
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high-energy irradiation on the upper atmospheres of planets.
Raven Cilley, George W. King, Lía Corrales   +2 more
doaj   +1 more source

Neue Einblicke in ein Schlüsselmaterial für Planetenphysik, Fusion und Materialforschung: Flüssiger Kohlenstoff

Physik in unserer Zeit, Volume 57, Issue 4, Page 154-161, July 2026.
Mit Hilfe der ultrahellen Röntgenpulse des European XFEL und einem speziellen Hochenergielaser konnte die Struktur von flüssigem Kohlenstoff bei Drücken von über einer Million Atmosphären und Temperaturen von etwa 7000 K bestimmt werden. Dieser Ansatz offenbarte eine komplexe Flüssigkeit mit einer wasserähnlichen Struktur und im Mittel vier ...
Dominik Kraus, Ulf Zastrau
wiley   +1 more source

A NEW ANALYSIS OF THE EXOPLANET HOSTING SYSTEM HD 6434 [PDF]

The Astronomical Journal, 2015
The current goal of exoplanetary science is not only focused on detecting but characterizing planetary systems in hopes of understanding how they formed, evolved, and relate to the Solar System. The Transit Ephemeris Refinement and Monitoring Survey (TERMS) combines both radial velocity (RV) and photometric data in order to achieve unprecedented ground-
Hinkel, Natalie R., Kane, Stephen R., Pilyavsky, Genady, Boyajian, Tabetha S., James, David J., Naef, Dominique, Fischer, Debra A., Udry, Stephane   +7 more
openaire   +2 more sources

The Complexity of Deep Aqueous Fluids in Planetary Ultramafic Mantles

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Planetary volatiles cycle through a planet's crust, mantle, and atmosphere, playing a crucial role in surface processes and habitability. Discussions of planetary volatiles traditionally focus on water, carbon, nitrogen, and sulfur, but fluids in contact with silicate rocks and ultramafic mantles can contain significant amounts of magnesium ...
Sophia E. Economon, Dimitri A. Sverjensky   +1 more
wiley   +1 more source

RBN-World: Sub-Symbolic Artificial Chemistry for Artificial Life [PDF]

, 2011
Artificial Chemistry seeks to explore how life-like systems can emerge from a pre-biotic environment. This thesis begins with the background of this research area and a re-implementation of an existing Artificial Chemistry as a case study.
Faulconbridge, Adam S, Faulconbridge, Adam   +1 more
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