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We report optical extinction properties of dust for a sample of 26 early-type galaxies based on the analysis of their multicolour CCD observations. The wavelength dependence of dust extinction for these galaxies is determined and the…

Astrophysics · Physics 2007-05-23 M. K. Patil , S. K. Pandey , D. K. Sahu , A. K. Kembhavi

Dust emission from high-redshift galaxies gives us a clue to the origin and evolution of dust in the early Universe. Previous studies have shown that different sources of dust (stellar dust production and dust growth in dense clouds)…

Astrophysics of Galaxies · Physics 2022-12-28 Yuan-Ming Hsu , Hiroyuki Hirashita , Yen-Hsing Lin , Peter Camps , Maarten Baes

We explore variations of the dust extinction law of the Milky Way by selecting stars from the Swift/UVOT Serendipitous Source Catalogue, cross-matched with Gaia DR2 and 2MASS to produce a sample of 10,452 stars out to ~4kpc with photometry…

Astrophysics of Galaxies · Physics 2021-05-12 I. Ferreras , M. Tress , G. Bruzual , S. Charlot , M. Page , V. Yershov , P. Kuin , D. Kawata , M. Cropper

A variety of dust attenuation/extinction curves have been observed in high-redshift galaxies, with mixed results regarding their correlations with global galaxy properties. These variations are likely driven by factors such as intrinsic…

Astrophysics of Galaxies · Physics 2025-10-15 V. Markov , S. Gallerani , A. Pallottini , M. Bradac , S. Carniani , R. Tripodi , G. Noirot , F. Di Mascia , E. Parlanti , N. Martis

Context. Observations at sub-millimeter and mm wavelengths will in the near future be able to resolve the radial dependence of the mm spectral slope in circumstellar disks with a resolution of around a few AU at the distance of the closest…

Solar and Stellar Astrophysics · Physics 2010-07-20 T. Birnstiel , L. Ricci , F. Trotta , C. P. Dullemond , A. Natta , L. Testi , C. Dominik , T. Henning , C. W. Ormel , A. Zsom

A combination of JWST observations at z~12-14 and ALMA observations of extremely dust-rich systems at z~6 has demonstrated that dust grows extremely fast in the early Universe, with galaxies amassing up to 10^7 Msun of dust in just 500 Myr…

We investigate the redshift (z) evolution of dust properties, its dependences on initial conditions of galaxy formation, and physical correlations between dust, gas, and stellar contents at different z based on our original chemodynamical…

Astrophysics of Galaxies · Physics 2015-06-23 Kenji Bekki

Recent observations have indicated the existence of dust in high-redshift galaxies, however, the dust properties in them are still unknown. Here we present theoretical constraints on dust properties in Lyman break galaxies (LBGs) at z=3 by…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Hidenobu Yajima , Kentaro Nagamine , Robert Thompson , Jun-Hwan Choi

Planet formation models rely on knowledge of the physical conditions and evolutionary processes in protoplanetary disks, in particular the grain size distribution and dust growth timescales. In theoretical models, several barriers exist…

Earth and Planetary Astrophysics · Physics 2024-01-26 Nienke van der Marel , Paola Pinilla

The interstellar dust content in galaxies can be traced in extinction at optical wavelengths, or in emission in the far-infrared. Several studies have found that radiative transfer models that successfully explain the optical extinction in…

Astrophysics of Galaxies · Physics 2015-06-23 W. Saftly , M. Baes , G. De Geyter , P. Camps , F. Renaud , J. Guedes , I. De Looze

Variations in the grain size distribution are to be expected in the interstellar medium (ISM) due to grain growth and destruction. In this work, we present a dust collision model to be implemented inside a magnetohydrodynamical (MHD) code…

Astrophysics of Galaxies · Physics 2021-03-24 L. Beitia-Antero , A. I. Gómez de Castro

The UV-optical dust attenuation curve is key to interpreting the intrinsic properties of galaxies and provides insights into the nature of dust grains and their geometry relative to stars. In this work, we constrain the UV-optical slope of…

[Abridged] We present a new approach to investigate the content and spatial distribution of dust in structurally unresolved star-forming galaxies from the observed dependence of integrated spectral properties on galaxy inclination. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Jacopo Chevallard , Stephane Charlot , Benjamin Wandelt , Vivienne Wild

We analyse the joint distribution of dust attenuation and projected axis ratios, together with galaxy size and surface brightness profile information, to infer lessons on the dust content and star/dust geometry within star-forming galaxies…

Extinction curves observed toward individual Active Galactic Nuclei (AGN) usually show a steep rise toward far-ultraviolet (FUV) wavelengths and can be described by the Small Magellanic Cloud (SMC)-like dust model. This feature suggests the…

Astrophysics of Galaxies · Physics 2023-06-16 Nguyen Chau Giang , Thiem Hoang

We build a rigorous statistical framework to provide constraints on the chemical and dust evolution parameters for nearby late-type galaxies with a wide range of gas fractions ($3\%<f_g<94\%$). A Bayesian Monte Carlo Markov Chain framework…

Astrophysics of Galaxies · Physics 2021-07-08 P. De Vis , S. J. Maddox , H. L. Gomez , A. P. Jones , L. Dunne

We perform smoothed particle hydrodynamics (SPH) simulations of an isolated galaxy with a new treatment for dust formation and destruction. To this aim, we treat dust and metal production self-consistently with star formation and supernova…

Astrophysics of Galaxies · Physics 2017-01-19 Shohei Aoyama , Kuan-Chou Hou , Ikkoh Shimizu , Hiroyuki Hirashita , Keita Todoroki , Jun-Hwan Choi , Kentaro Nagamine

Context. The properties of dust grains, in particular their size distribution, are expected to differ from the interstellar medium to the high-density regions within molecular clouds. Since the extinction at near-infrared wavelengths is…

Astrophysics of Galaxies · Physics 2015-06-04 Joana Ascenso , Marco Lombardi , Charles J. Lada , João Alves

We model the process of dust coagulation in protoplanetary disks and calculate how it affects their observational appearance. Our model involves the detailed solution of the coagulation equation at every location in the disk. At regular…

Astrophysics · Physics 2010-04-06 C. P. Dullemond , C. Dominik

The degree of coupling between the gas and the magnetic field during the collapse of a core and the subsequent formation of a disk depends on the assumed dust size distribution. We study the impact of grain-grain coagulation on the…

Astrophysics of Galaxies · Physics 2020-10-28 V. Guillet , P. Hennebelle , G. Pineau des Forêts , A. Marcowith , B. Commerçon , P. Marchand