Results 101 to 110 of about 13,169 (193)

Brecciation at the grain scale within the lithologies of the Winchcombe Mighei‐like carbonaceous chondrite

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 5, Page 1068-1100, May 2024.
Abstract The Mighei‐like carbonaceous (CM) chondrites have been altered to various extents by water–rock reactions on their parent asteroid(s). This aqueous processing has destroyed much of the primary mineralogy of these meteorites, and the degree of alteration is highly heterogeneous at both the macroscale and nanoscale.
Luke Daly   +52 more
wiley   +1 more source

Investigating the impact of x‐ray computed tomography imaging on soluble organic matter in the Murchison meteorite: Implications for Bennu sample analyses

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 1, Page 105-133, January 2024.
Abstract X‐ray computed tomography (XCT) is a valuable reconnaissance tool for three‐dimensional imaging and identification of distinct lithologies in extraterrestrial samples. It will be used as part of the preliminary examination of samples returned from asteroid (101955) Bennu by the Origins, Spectral Interpretation, Resource Identification, and ...
Daniel P. Glavin   +21 more
wiley   +1 more source

Anomalous Radio-Wave Scattering from Interstellar Plasma Structures

open access: yes, 2000
This paper considers scattering screens that have arbitrary spatial variations of scattering strength transverse to the line of sight, including screens that are spatially well confined, such as disks and filaments.
Ananthakrishnan S.   +13 more
core   +1 more source

Galactic Large-scale Filaments Resident in Asymmetric Environments: Clues from Cross-filament Profiles of Density and Temperature

open access: yesThe Astrophysical Journal
Large-scale filaments ubiquitously exist in the Galactic interstellar medium, and their radial profiles offer insights into their formation mechanisms. We present a statistical analysis of molecular hydrogen column density (N(H _2 )) and dust temperature
Keyun Su   +3 more
doaj   +1 more source

ACES: The Magnetic Field in Large Filaments in the Galactic Center

open access: yesThe Astrophysical Journal
The Galactic center (GC) is an extreme region of the Milky Way that is host to a complex set of thermal and nonthermal structures. In particular, the GC contains high-density gas and dust that is collectively referred to as the Central Molecular Zone ...
Dylan M. Paré   +35 more
doaj   +1 more source

[Fe II] and H2 filaments in the Supernova Remnant G11.2-0.3: Supernova Ejecta and Presupernova Circumstellar Wind

open access: yes, 2006
We present the results of near-infrared imaging and spectroscopic observations of the young, core-collapse supernova remnant (SNR) G11.2-0.3. In the [Fe II] 1.644 um image, we first discover long, clumpy [Fe II] filaments within the radio shell of the ...
Bon‐Chul Koo   +14 more
core   +1 more source

Characterizing interstellar filaments with Herschel in IC 5146 {Letter] [PDF]

open access: yes, 2011
We provide a first look at the results of the Herschel Gould Belt survey toward the IC 5146 molecular cloud and present a preliminary analysis of the filamentary structure in this region. The column density map, derived from our 70–500 μm Herschel data, reveals a complex network of filaments and confirms that these filaments are the main birth sites of
Arzoumanian, D.   +23 more
openaire  

The Formation of Milky Way “Bones”: Ubiquitous HI Narrow Self-absorption Associated with CO Emission

open access: yesThe Astrophysical Journal Letters
Long and skinny molecular filaments running along Galactic spiral arms are known as “bones,” since they make up the skeleton of the Milky Way. However, their origin is still an open question.
Shenglan Sun   +3 more
doaj   +1 more source

Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations

open access: yesThe Astrophysical Journal
We report 850 μ m continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B -fields In STar forming Regions Observations large program on the James Clerk Maxwell Telescope. These data reveal
Jia-Wei Wang   +156 more
doaj   +1 more source

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