Results 101 to 110 of about 394,629 (288)

Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 7, Page 1441-1479, July 2025.
Abstract CI1 chondrites are rare meteorites with high scientific value. In fact, they are the most chemically primitive meteorites and show evidence of intense parent‐body aqueous alteration. They also share strong similarities with samples from Ryugu and Bennu asteroids returned by the JAXA Hayabusa2 and NASA's OSIRIS‐REx missions.
J. Gattacceca   +26 more
wiley   +1 more source

Dust in protoplanetary disks: observations [PDF]

open access: yesEPJ Web of Conferences, 2015
Solid particles, usually referred to as dust, are a crucial component of interstellar matter and of planet forming disks surrounding young stars. Despite the relatively small mass fraction of ≈1% (in the solar neighborhood of our galaxy; this number may differ substantially in other galaxies) that interstellar grains represent of the total mass budget ...
L.B.F.M. Waters, L.B.F.M. Waters
openaire   +3 more sources

Uncertainties in water chemistry in disks: An application to TW Hya [PDF]

open access: yes, 2013
Context. This paper discusses the sensitivity of water lines to chemical processes and radiative transfer for the protoplanetary disk around TW Hya. The study focuses on the Herschel spectral range in the context of new line detections with the PACS ...
Aresu, G.   +9 more
core   +6 more sources

Metallic messengers from the cosmos: Rare (Al,Cu)‐bearing meteorites from the Project Stardust collection

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 7, Page 1609-1620, July 2025.
Abstract We report the discovery of (Al,Cu)‐bearing metallic alloys in two micrometeorites found in the Project Stardust collection gathered from urban rooftop environments in Norway. Most of the alloys are the same as those found in the Khatyrka meteorite and other micrometeorites, though one has a composition that has not been reported previously ...
Luca Bindi   +9 more
wiley   +1 more source

Protoplanetary Disk Masses from Radiative Transfer Modeling: A Case Study in Taurus [PDF]

open access: yesAstronomical Journal, 2019
Measuring the masses of protoplanetary disks is crucial for understanding their planet-forming potential. Typically, dust masses are derived from (sub-)millimeter flux density measurements plus assumptions for the opacity, temperature, and optical depth ...
N. Ballering, J. Eisner
semanticscholar   +1 more source

An overview of the petrography and petrology of particles from aggregate sample from asteroid Bennu

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 5, Page 979-996, May 2025.
Abstract The OSIRIS‐REx mission returned a sample of regolith from the carbonaceous asteroid Bennu in September 2023. We present preliminary in situ investigations of the petrology and petrography of selected particles ranging in size from 0.5 to 3 mm.
Harold C. Connolly Jr   +57 more
wiley   +1 more source

Sites of Planet Formation in Binary Systems. I. Evidence for Disk−Orbit Alignment in the Close Binary FO Tau

open access: yesThe Astronomical Journal
Close binary systems present challenges to planet formation. As binary separations decrease, so do the occurrence rates of protoplanetary disks in young systems and planets in mature systems.
Benjamin M. Tofflemire   +10 more
doaj   +1 more source

eddy: Extracting Protoplanetary Disk Dynamics with Python

open access: yesJournal of Open Source Software, 2019
eddy is a Python package which implements several methods for extracting kinematical information from astronomical observations of Doppler shifted molecular line emission in protoplanetary disks, the birthplace of planets.
R. Teague
semanticscholar   +1 more source

Hydration and dehydration of CM chondrites revealed by X‐ray diffraction combined with textural observations and compositional data

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 5, Page 1194-1215, May 2025.
Abstract The in‐plane rotation method is used to obtain X‐ray random diffraction (XRD) patterns of polished thin sections of 10 CM chondrites. The samples include five intermediately altered CM chondrites with subtypes 2.6–2.3, two heavily altered CM chondrites with subtype 2.0 and three with secondary heating after hydration (Y 980036, Y 980051, and ...
Naoya Imae   +2 more
wiley   +1 more source

PROTOPLANETARY DISK STRUCTURES IN OPHIUCHUS [PDF]

open access: yesThe Astrophysical Journal, 2009
ApJ in press: 51 pages, 13 ...
Sean M. Andrews   +4 more
openaire   +3 more sources

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