Results 91 to 100 of about 13,210 (208)

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

Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell

open access: yes, 2007
Four mosaics of deep, continuum-subtracted, CCD images have been obtained over the extensive galactic radio continuum shell, W 50, which surrounds the remarkable stellar system SS 433. Two of these mosaics in the Halpha+[N II] and [O III] 5007 A emission
A. Caulet   +40 more
core   +1 more source

G321.93-0.01: A Rare Site of Multiple Hub-filament Systems with Evidence of Collision and Merging of Filaments

open access: yesThe Astronomical Journal
Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role of filaments in MSF and the origin of HFSs, we conducted a multiscale and multiwavelength observational investigation of the molecular cloud G321.93–0.
A. K. Maity   +7 more
doaj   +1 more source

Modelling interstellar structures around Vela X-1

open access: yes, 2017
We report the discovery of filamentary structures stretched behind the bow-shock-producing high-mass X-ray binary Vela X-1 using the SuperCOSMOS H-alpha Survey and present the results of optical spectroscopy of the bow shock carried out with the Southern
Alexashov, D. B.   +3 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  

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

The Structure of an 80 Parsec Long Massive Filament

open access: yesThe Astronomical Journal
Using new Institut de Radioastronomie Millimétrique 30 m telescope N _2 H ^+ , C ^18 O J  = 1–0 and Atacama Pathfinder Experiment telescope ^13 CO and C ^18 O J  = 2–1 maps together with archival far-infrared continuum data, and ^12 CO, and ^13 CO J  = 1–
Qian-Ru He   +13 more
doaj   +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

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

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