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In order to investigate the nature and origin of dust in elliptical galaxies, a method for the dust mass evaluation, which accounts for the dust temperature distribution, is here presented and discussed. The derived dust masses turn out to…

天体物理学 · 物理学 2007-05-23 P. Merluzzi

We present a new dust extinction technique with which we are able to retrieve parsec-scale gas surface density maps for entire nearby galaxies. The method measures the dust attenuation in optical bands on a pixel-by-pixel basis against a…

We investigate the evolution of interstellar dust in the Universe by means of chemical evolution models of galaxies of different morphological types, reproducing the main observed features of present day galaxies. We adopt the most updated…

星系天体物理 · 物理学 2017-09-06 Lorenzo Gioannini , Francesca Matteucci , Francesco Calura

We present a method to estimate and map the two-dimensional distribution of dust extinction in the late-type spiral galaxy NGC 959 from the theoretical and observed flux ratio of optical V and mid-IR (MIR) 3.6 micron images. Our method is…

宇宙学与河外天体物理 · 物理学 2015-05-14 K. Tamura , R. A. Jansen , R. A. Windhorst

Interstellar dust is a major foreground contaminant for many observations and a key component in the chemistry of the interstellar medium, yet its properties remain highly uncertain. Using low-resolution spectra, we accurately measure the…

星系天体物理 · 物理学 2024-07-23 Xiangyu Zhang , Gregory Green

Cosmic dust plays a vital role in stellar and galactic formation and evolution, but its three-dimensional structure in the Milky Way has remained unclear due to insufficient precise reddening and distance measurements. Although early…

星系天体物理 · 物理学 2026-01-16 Ruoyi Zhang , Haibo Yuan , Bingqiu Chen , Maosheng Xiang , Yang Huang , Xiaowei Liu , Jifeng Liu

We map the dust distribution in the central 180" (~680 pc) region of the M31 bulge, based on HST/WFC3 and ACS observations in ten bands from near-ultraviolet (2700 A) to near-infrared (1.5 micron). This large wavelength coverage gives us…

Interstellar dust corrupts nearly every stellar observation, and accounting for it is crucial to measuring physical properties of stars. We model the dust distribution as a spatially varying latent field with a Gaussian process (GP) and…

星系天体物理 · 物理学 2022-02-15 Andrew C. Miller , Lauren Anderson , Boris Leistedt , John P. Cunningham , David W. Hogg , David M. Blei

The EAGLE cosmological simulations reproduce the observed galaxy stellar mass function and many galaxy properties. In this work, we study the dust-related properties of present-day EAGLE galaxies through mock observations in the…

星系天体物理 · 物理学 2016-08-17 Peter Camps , James W. Trayford , Maarten Baes , Tom Theuns , Matthieu Schaller , Joop Schaye

We present a comprehensive 3D dust reddening map covering the entire Milky Way, constructed by combining reddening estimates based on LAMOST low-resolution spectra (E(B$-$V)$_{\rm LAMOST}$) with those derived from $Gaia$ XP spectra…

星系天体物理 · 物理学 2025-09-10 Tao Wang , Haibo Yuan , Bingqiu Chen , Maosheng Xiang , Ruoyi Zhang , Bowen Huang , Hongrui Gu , Shuaicong Wang , Jiawei Li

Studying absorption and scattering of X-ray radiation by interstellar dust grains allows us to access the physical and chemical properties of cosmic grains even in the densest regions of the Galaxy. We aim at characterising the dust…

The detailed distribution of dust in the disks of spiral galaxies is important to understanding the radiative transfer within disks, and to measuring overall dust masses if significant quantities of dust are either very opaque or very cold.…

天体物理学 · 物理学 2009-10-31 Donovan L. Domingue , William C. Keel , Stuart D. Ryder , Raymond E. White

Galaxies reside in extended dark matter halos, but their baryonic content, especially dust, remains less well understood. We aim to investigate the amount and distribution of dust in galactic halos by measuring shifts in the observed…

星系天体物理 · 物理学 2025-08-22 Eray Genc , Angus H. Wright , Hendrik Hildebrandt

Understanding the 3D structure of the Milky Way is a crucial step in deriving properties of the star-forming regions, as well as the Galaxy as a whole. We present a novel 3D map of the Milky Way plane that extends to 10 kpc distance from…

The Planck mission provided all-sky dust emission maps in the submm to mm range at an angular resolution of 5'. In addition, some specific sources can be observed at long wavelengths and higher resolution using ground-based telescopes.…

星系天体物理 · 物理学 2024-10-15 D. Paradis , C. Mény , A. Noriega-Crespo , K. Demyk , I. Ristorcelli , N. Ysard

We examine the dust distribution around a sample of 70,000 low redshift galaxy groups and clusters derived from the Sloan Digital Sky Survey. By correlating spectroscopically identified background quasars with the galaxy groups we obtain…

宇宙学与河外天体物理 · 物理学 2015-05-18 Sean L. McGee , Michael L. Balogh

We present a self-consistent three-dimensional Monte-Carlo radiative transfer model of the stellar and dust emission in the Milky-Way, and have computed synthetic observations of the 3.6 to 100 microns emission in the Galactic mid-plane. In…

(Abridged) Using an efficient computational approach, we have reconstructed the structure of the dust cloud in the Solar system between 0.5 and 100 AU produced by the Kuiper belt objects. Our simulations offer a 3-D physical model of the…

天体物理学 · 物理学 2007-05-23 Nick N. Gorkavyi , Leonid M. Ozernoy , Tanya Taidakova , John C. Mather

We present the first large-scale, high-resolution simulations of dusty, star formation feedback-driven galactic outflows. Using the Cholla hydrodynamics code, we investigate dust sputtering in these environments for grains ranging in size…

星系天体物理 · 物理学 2026-03-09 Helena M. Richie , Evan E. Schneider

3D maps of interstellar dust are crucial for understanding the structure of the Milky Way interstellar medium to apply correction to astrophysical observations affected by dust. We aim at providing new extinction estimates in the Gaia BP/RP…

星系天体物理 · 物理学 2025-11-18 M. Barbillon , A. Recio-Blanco , P. de Laverny , P. A. Palicio