Results 31 to 40 of about 274 (116)

Absolute Magnitudes of Pan-STARRS PS1 Asteroids

open access: yes, 2013
Absolute magnitude (H) of an asteroid is a fundamental parameter describing the size and the apparent brightness of the body. Because of its surface shape, properties and changing illumination, the brightness changes with the geometry and is described by
Veres, Peter   +6 more
core  

Efeitos de estruturas de poeira em torno de anãs brancas [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2011Observações mostram que algumas anãs brancas ricas em metais, como cálcio e silício ...
Herpich, Fábio Rafael
core  

Application of an evolution strategy in planetary ephemeris modeling

open access: yes, 2019
Classical planetary ephemeris construction comprises three major steps which are to be performed iteratively: numerical integration of coupled equations of motion of a multi-body system (propagator step), reduction of observations (reduction step), and ...
Müller, Jürgen   +2 more
core   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both   +2 more
wiley   +1 more source

Non‐innocent solvents in meteorite extractions: Evidence for artifact formation

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 4, Page 706-719, April 2026.
Abstract Solvent extraction is a cornerstone of meteoritic organic and inorganic chemistry, yet the assumption that common solvents act as chemically inert media is becoming increasingly untenable. This study reports that low‐molecular‐weight alcohols, particularly methanol and ethanol, are “non‐innocent” solvents when used to extract soluble sulfur ...
N. Randazzo   +6 more
wiley   +1 more source

Linear spectro-polarimetry: a new diagnostic tool for the classification and characterisation of asteroids

open access: yes, 2015
We explore the use of spectro-polarimetry as a remote sensing tool for asteroids in addition to traditional reflectance measurements. In particular we are interested in possible relationships between the wavelength-dependent variation of linear polariza ...
A. Cellino, M. F. Sterzik, S. Bagnulo
core  

The effects of pressure on immiscibility in metallic, core‐forming liquids: Implications for protoplanetary differentiation

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 4, Page 720-738, April 2026.
Abstract Mechanisms for metal core formation in rocky planetesimals and planetary embryos remain poorly constrained, in part due to complexities arising from immiscibility in core‐forming liquids at low pressures. To assess the pressure dependence of immiscibility and its role in protoplanetary differentiation, we performed experiments at 3 and 5 GPa ...
Geoffrey David Bromiley   +2 more
wiley   +1 more source

Long ultra violet monitoring IUE observation of MRK 478 [PDF]

open access: yes, 2018
595-599Our universe comprises of many different kinds of objects such as planets, comets, asteroids, minor bodies, stars, galaxies, clusters of galaxies and super cluster of galaxies with their sizes and masses spread over several magnitudes.
Vedavathi, P, Doddamani, Vijayakumar H
core  

Solar System: Between Fire and Ice

open access: yes, 2021
Combining the latest astronomical results with a historical perspective, Solar System: Between Fire and Ice takes you on a fabulous tour of our intriguing Solar System.
Hockey, Thomas A.
core  

Asteroid, 1909, JA

open access: yes, 1911
The discovery of the minor planets or asteroids has become so general in recent years that the work of following them after their discovery is of great importance.
Nicholson, Seth, Stotts, Alma M.
core  

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