Buscar
Mostrando ítems 31-40 de 383
High particulate iron(II) content in glacially sourced dusts enhances productivity of a model diatom
(American Association for the Advancement of Science, 2017)
Little is known about the bioavailability of iron (Fe) in natural dusts and the impact of dustmineralogy on Fe utilization by photosynthetic organisms. Variation in the supply of bioavailable Fe to the ocean has the potential ...
Cold dust clumps in dynamically hot gas
(EDP Sciences, 2010-07)
Aims. We present clumps of dust emission from Herschel observations of the Large Magellanic Cloud (LMC) and their physical and statistical
properties. We catalog cloud features seen in the dust emission from Herschel ...
Far-Infrared Dust Temperatures and Column Densities of the MALT90 Molecular Clump Sample
(IOP Publishing, 2015)
We present dust column densities and dust temperatures for similar to 3000 young, high-mass molecular clumps from the Millimeter Astronomy Legacy Team 90 GHz survey, derived from adjusting single-temperature dust emission ...
A submillimeter study of the IR dust bubble s 21 and its environs
(Universidad Nacional Autonoma de Mexico, 2017)
Based on the molecular emission in the 12CO(2-1) and 13CO(2-1) lines, and on the continuum emission in the MIR and FIR towards the S 21 IR dust bubble, we analyze the physical characteristics of the gas and dust linked to ...
The Galactic disc distribution of planetary nebulae with warm dust emission features - I
(BLACKWELL SCIENCE LTD, 2001-02-01)
We investigate the Galactic disc distribution of a sample of planetary nebulae characterized in terms of their mid-infrared spectral features. The total number of Galactic disc PNe with 8-13 mum spectra is brought up to ...
A Herschel PACS survey of the dust and gas in Upper Scorpius disks
(EDP Sciences, 2013)
We present results of far-infrared photometric observations with Herschel PACS of a sample of Upper Scorpius stars, with a detection
rate of previously known disk-bearing K and M stars at 70, 100, and 160 μm of 71%, 56%, ...
A Multifrequency ALMA Characterization of Substructures in the GM Aur Protoplanetary Disk
(IOP Publishing, 2020)
The protoplanetary disk around the T Tauri star GM Aur was one of the first hypothesized to be in the midst of being cleared out by a forming planet. As a result, GM Aur has had an outsized influence on our understanding ...
A Compact Concentration of Large Grains in the HD 142527 Protoplanetary Dust Trap
(The American Astronomical Society, 2015-10-20)
A pathway to the formation of planetesimals, and eventually giant planets, may occur in concentrations of dust
grains trapped in pressure maxima. Dramatic crescent-shaped dust concentrations have been seen in recent ...
A compact concentration of large grains in the HD 142527 protoplanetary dust trap
(IOP Publishing, 2015)
A pathway to the formation of planetesimals, and eventually giant planets, may occur in concentrations of dust grains trapped in pressure maxima. Dramatic crescent-shaped dust concentrations have been seen in recent radio ...