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A precise theoretical investigation has been made on dust-acoustic (DA) waves (DAWs) in a four components dusty plasma medium having inertial warm adiabatic dust grains and inertialess $q$-distributed electrons as well as isothermal ions…

Plasma Physics · Physics 2019-10-08 M. H. Rahman , N. A. Chowdhury , A. Mannan , A. A. Mamun

Context. The compositional properties of hydrogenated amorphous carbons are known to evolve in response to the local conditions. Aims. To present a model for low-temperature, amorphous hydrocarbon solids, based on the microphysical…

Astrophysics of Galaxies · Physics 2015-11-06 A. P. Jones

We use the radiation transfer simulation of Xilouris et al. (1999) to constrain the quantity of dust in three nearby spiral galaxies (NGC 4013, NGC 5907 and NGC 891). The predicted visual optical depth from the model is compared with the…

Astrophysics · Physics 2009-11-10 E. M. Xilouris

The content of interstellar clouds, in particular the inventory of diffuse molecular gas, remains uncertain. We identified a sample of isolated clouds, approximately 100 solar masses in size, and used the dust content to estimate the total…

Astrophysics of Galaxies · Physics 2017-07-25 William T. Reach , Carl Heiles , Jean-Philippe Bernard

Anisotropic anomalous dust diffusion in microgravity dusty plasma is investigated using experimental data from the Plasmakristall-4 (PK-4) facility on board the International Space Station. The PK-4 experiment uses video cameras to track…

Plasma Physics · Physics 2025-04-25 Bradley R. Andrew , Luca Guazzotto , Lorin Matthews , Hyde Truell , E. G. Kostadinova

Spectral energy distribution (SED) analyses, that include new millimeter (mm) to far-infrared (FIR) observations, obtained with continuum instruments on the Nobeyama and James Clerk Maxwell Telescopes and Infrared Space Observatory (ISO),…

Astrophysics · Physics 2009-11-10 Lerothodi L. Leeuw , Anne E. Sansom , E. Ian Robson , Martin Haas , Nario Kuno

Early dust grain growth in protostellar envelopes infalling on young discs has been suggested in recent studies, supporting the hypothesis that dust particles start to agglomerate already during the Class 0/I phase of young stellar objects…

Context. Carbonaceous nano-grains play a fundamental role in the physico-chemistry of the interstellar medium (ISM) and especially of photon-dominated regions (PDRs). Their properties vary with the local physical conditions and affect the…

Astrophysics of Galaxies · Physics 2022-10-05 T. Schirmer , N. Ysard , E. Habart , A. P. Jones , A. Abergel , L. Verstraete

The observed spatial and kinematic overlap between soft X-ray emission and the Narrow Line Region (NLR) in obscured Active Galactic Nuclei (AGN) yields compelling evidence that relatively low-density gas co-exists with higher density gas on…

High Energy Astrophysical Phenomena · Physics 2019-02-20 Stefano Bianchi , Matteo Guainazzi , Ari Laor , Jonathan Stern , Ehud Behar

The present study provides an investigation on the deposition of carbon-related products on different substrates using a high power dielectric barrier discharge fed with helium and saturated hydrocarbon gases. The discharge has been…

We present a comparative study of four physical dust models and two single-temperature modified blackbody models by fitting them to the resolved WISE, Spitzer, and Herschel photometry of M101 (NGC 5457). Using identical data and a…

We report the Nucleated Atomistic Grain Growth Simulator (NAGGS) as a new tool to model the growth of realistic nanosized dust grains through the progressive accretion of monomers onto a nucleated seed. NAGGS can be used with open source…

Instrumentation and Methods for Astrophysics · Physics 2026-01-12 Joan Mariñoso Guiu , Antoni Macià Escatllar , Stefan T. Bromley

We use the Herschel-ATLAS survey to conduct the first large-scale statistical study of the submm properties of optically selected galaxies. Using ~80,000 r-band selected galaxies from 126 deg^2 of the GAMA survey, we stack into submm…

"Fluffy" hydrogenated amorphouscarbon(a-C:H)wassynthesizedusingadielectric barrier discharge plasma, driven by nanosec ond high voltage pulses at 1 kHz frequency in a helium-butane mixture. The a-C:H samples were characterized by scanning…

In dusty plasma environments, the spontaneous growth of nanoparticles from reactive gases has been extensively studied for over three decades, primarily focusing on hydrocarbons and silicate particles. Here, we introduce the growth of…

We present the first tentative detection of spinning dust emission from specific astronomical sources. All other detections in the current literature are statistical. The Green Bank 140 foot telescope was used to observe 10 dust clouds at…

Astrophysics · Physics 2009-11-07 Douglas P. Finkbeiner , David J. Schlegel , Curtis Frank , Carl Heiles

Protoplanetary disks, interstellar clouds, and active galactic nuclei, contain X-ray dominated regions. X-rays interact with the dust and gas present in such environments. While a few laboratory X-ray irradiation experiments have been…

Instrumentation and Methods for Astrophysics · Physics 2016-03-09 L. Gavilan , C. Jäger , A. Simionovici , J. L. Lemaire , T. Sabri , E. Foy , S. Yagoubi , T. Henning , D. Salomon , G. Martinez-Criado

Dust grains in the interstellar medium interact with photons across the electromagnetic spectrum. They are generally photon energy converters, absorbing short wavelength radiation and emitting long wavelength radiation. Sixty years ago in…

Astrophysics of Galaxies · Physics 2026-01-19 Yancy L. Shirley , Jeffrey G. Mangum , Desika Narayanan , James Di Francesco

We use the GAMA I dataset combined with GALEX, SDSS and UKIDSS imaging to construct the low-redshift (z<0.1) galaxy luminosity functions in FUV, NUV, ugriz, and YJHK bands from within a single well constrained volume of 3.4 x 10^5…

Interstellar dust spans a wide range in size distribution, ranging from ultrasmall grains of a few Angstroms to micrometer-size grains. While the presence of nanometer-size dust grains in the Galactic interstellar medium was speculated six…

Astrophysics of Galaxies · Physics 2018-11-14 Yanxia Xie , Luis C. Ho , Aigen Li , Jinyi Shangguan
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