Results 81 to 90 of about 35,917 (194)

Bayesian analysis of exoplanet and binary orbits

, 2012
We introduce BASE (Bayesian astrometric and spectroscopic exoplanet detection and characterisation tool), a novel program for the combined or separate Bayesian analysis of astrometric and radial-velocity measurements of potential exoplanet hosts and ...
Armstrong, Armstrong, Bayes, Bond, Brooks, Charbonneau, Delplancke, Ford, Gatewood, Gelman, Gregory, Hastings, Holman, Hummel, Hummel, Koch, Kuhn, Lange, Lindegren, Lyot, Mahalanobis, Mamajek, Mao, Marois, Mayor, McArthur, Metropolis, Nascimbeni, Perryman, Perryman, Pickering, Prevot, R. Launhardt, Reffert, Seager, Shao, Smith, Smith, Sozzetti, T. Henning, T. Schulze-Hartung, Thiele, Tolbert, Vigan, Vogt, Wolszczan   +45 more
core   +1 more source

High Pressure Formation of the Eight‐Fold Coordinated Post‐Post Spinel MgFe2O4

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract MgFe2O4 was probed to 74(1) GPa and 2,840(130) K as a low‐pressure analog to post‐post spinel Mg2SiO4 predicted in super‐Earths using synchrotron multigrain X‐ray diffraction techniques in the laser‐heated diamond anvil cell. With high‐temperatures above 65 GPa the eight‐fold coordinated δ‐MgFe2O4 (Th3P4‐type) is stable with Mg and Fe ...
Claire C. Zurkowski, Jing Yang, Stella Chariton, Vitali Prakapenka, Yingwei Fei   +4 more
wiley   +1 more source

Twenty-Five Years of Exoplanet Discoveries: The Exoplanet Hosts

, 2023
21 pages, 10 figures; accepted as a chapter in the book "Planetary systems now", eds. Luisa M.
openaire   +2 more sources

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, Volume 14, Issue 5, 2 February 2026.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Variability Survey of Southern Open Clusters NGC 6134, NGC 6416, Collinder 394, and Alessi 10

Journal of Mathematical and Fundamental Sciences
We present the results of a brightness variability survey of four southern open clusters, namely NGC 6134, NGC 6416, Collinder 394, and Alessi 10, which were observed using three telescopes following a time series photometric scheme during the dry ...
Denny Mandey, Dhimaz Gilang Ramadhan, Muhammad Yusuf, Teduh Perhati, Sahlan Ramadhan, Theofilus Hobba Pramono, Chornelis J’Be Anin, Premana Wardayanti Premadi, Anton Timur Jaelani, Agus Triono Puri Jatmiko, Mochamad Ikbal Arifyanto   +10 more
doaj   +1 more source

DYNAMIC EVOLUTION EXOPLANET SYSTEMS, MOVING IN ORBITAL RESONANCES WITH THE ACCOUNT OF SECULAR PERTURBATION FROM N BODIES

Odessa Astronomical Publications, 2017
Equations of exoplanet's motion connected with orbital Lindblad resonances with the account of secular terms caused by gravitational non-resonant perturbation are derived. Qualitative researches of orbital evolution modeling exoplanet systems are carried
B. R. Mushailov, A. K. Chuyas
doaj   +1 more source

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research

, 2013
We describe the contents and functionality of the NASA Exoplanet Archive, a database and tool set funded by NASA to support astronomers in the exoplanet community.
Abajian, M., Akeson, R. L., Ali, B., Beekley, A., Beichman, C., Berriman, G. B., Berukoff, S., Bryden, G., Chan, B., Chen, X., Ciardi, D., Crane, M., Good, J., Groom, S., Harbut, M., Jackson, E., Kane, S. R., Laity, A. C., Lau, C., Leifer, S., Lynn, M., McElroy, D. L., Papin, M., Payne, A. N., Plavchan, P., Ramirez, S. V., Regelson, M., Rey, R., Saucedo, M., Schmitz, M., Stauffer, J., von Braun, K., Wittman, M., Wyatt, P., Zhang, A.   +34 more
core   +1 more source

Symposium Review: Wild Animal Welfare is in Our Backyards

The Bulletin of the Ecological Society of America, Volume 107, Issue 2, April 2026.
Bonnie Fairbanks Flint, David R. Daversa, M. Camille Hopkins, Jessica X. Wright‐Lichter   +3 more
wiley   +1 more source

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, Volume 347, Issue 2, February 2026.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

Nitrates as a Potential N Supply for Microbial Ecosystems in a Hyperarid Mars Analog System

Life, 2019
Nitrate is common in Mars sediments owing to long-term atmospheric photolysis, oxidation, and potentially, impact shock heating. The Atacama Desert in Chile, which is the driest region on Earth and rich in nitrate deposits, is used as a Mars analog in ...
Jianxun Shen, Aubrey L. Zerkle, Eva Stueeken, Mark W. Claire   +3 more
doaj   +1 more source