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The baryon acoustic oscillation (BAO) feature in the clustering of matter in the universe serves as a robust standard ruler and hence can be used to map the expansion history of the universe. We use high force resolution simulations to…

Cosmology and Nongalactic Astrophysics · Physics 2011-06-07 Kushal T. Mehta , Hee-Jong Seo , Jonathan Eckel , Daniel J. Eisenstein , Marc Metchnik , Philip Pinto , Xiaoying Xu

X-ray photons from energetic sources such as gamma-ray bursts (GRBs) can be scattered on dust clouds in the Milky Way, creating a time-evolving halo around the GRB position. X-ray observations of such halos allow the measurement of dust…

Astrophysics of Galaxies · Physics 2023-09-26 Barbara Šiljeg , Željka Bošnjak , Vibor Jelić , Andrea Tiengo , Fabio Pintore , Andrea Bracco

We present the preliminary results of Monte Carlo simulations aimed to investigate the effects of realistic dust extinction (absorption + scattering) on the colours of high-z galaxies. In this paper, we concentrate on the case of spheroidal…

Astrophysics · Physics 2016-01-13 Andrea Cimatti , Simone Bianchi , Andrea Ferrara , Carlo Giovanardi

We have made a quantitative calculation for the systematic evolution of average extinction by interstellar dust in host galaxies of high-redshift Type Ia supernovae, by using a realistic model of photometric and chemical evolution of…

Astrophysics · Physics 2009-10-31 Tomonori Totani , Chiaki Kobayashi

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

We present the results of a machine learning study to measure the dust content of galaxies observed with JWST at z > 6 through the use of trained neural networks based on high-resolution IllustrisTNG simulations. Dust is an important…

The joint use of accurate near- and mid-infrared photometry from the 2MASS and WISE catalogues has allowed the variations of the extinction law and the dust grain size distribution in high Galactic latitudes (|b|>50) at distances up to 3…

Astrophysics of Galaxies · Physics 2019-10-25 George Gontcharov

We investigate the Alcock Paczynski (AP) test applied to the Baryon Acoustic Oscillation (BAO) feature in the galaxy correlation function. By using a general formalism that includes relativistic effects, we quantify the importance of the…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-27 Francesca Lepori , Enea Di Dio , Matteo Viel , Carlo Baccigalupi , Ruth Durrer

We present a new version of our analytical model of the spatial interstellar extinction variations within the nearest kiloparsec. This model treats the 3D dust distribution as a superposition of three overlapping layers: (1) the layer along…

We discuss the effects of redshift--space distortions on the estimate of high order galaxy correlation functions. We use both the Perseus--Pisces redshift survey and the results of high--resolution N--body simulations to explore the…

Astrophysics · Physics 2007-05-23 S. Ghigna , S. A. Bonometto , L. Guzzo , R. Giovanelli , M. P. Haynes , A. Klypin , J. R. Primack

Using a sample of almost 7000 strong MgII absorbers with 0.4 < z < 2.2 detected in the SDSS DR4 dataset, we investigate the gravitational lensing and dust extinction effects they induce on background quasars. After carefully quantifying…

Extinction maps are essential for tracing interstellar dust and enabling accurate stellar population studies in galaxies. Here, a high-resolution extinction distribution of nearby galaxy M33 is constructed by fitting multiband color indexes…

Astrophysics of Galaxies · Physics 2026-04-09 Yuxi Wang , Yi Ren , Jian Gao , Bingqiu Chen , Ying Li

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

The dust properties in high-redshift galaxies provide clues to the origin of dust in the Universe. Although dust has been detected in galaxies at redshift $z>7$, it is difficult to constrain the dominant dust sources only from the total…

Astrophysics of Galaxies · Physics 2019-10-02 Hsin-Min Liu , Hiroyuki Hirashita

We present a systematic study of the shape of the dust attenuation curve in star-forming galaxies from the far ultraviolet to the near infrared (0.15-2microns), as a function of specific star formation rate (sSFR) and axis ratio (b/a), for…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Vivienne Wild , Stephane Charlot , Jarle Brinchmann , Timothy Heckman , Oliver Vince , Camilla Pacifici , Jacopo Chevallard

Dust extinction curves provide one of the main avenues to understanding the detailed nature of dust grains and accounting for the effects of dust on observations of many astrophysical objects. For the first time, spectroscopic ultraviolet…

This paper is the third one in a series, intended to investigate how the observed kinematics of elliptical galaxies are affected by dust attenuation. In Paper I and Paper II, we investigated the effects of dust absorption; here we extend…

Astrophysics · Physics 2009-11-07 Maarten Baes , Herwig Dejonghe

Dust is a key component of galaxies, but its properties during the earliest eras of structure formation remain elusive. Here we present a simple semi-analytic model of the dust distribution in galaxies at $z \gtrsim 5$. We calibrate the…

Astrophysics of Galaxies · Physics 2025-07-08 Roy J. Zhao , Steven R. Furlanetto

The dust extinction curve is a critical component of many observational programs and an important diagnostic of the physics of the interstellar medium. Here we present new measurements of the dust extinction curve and its variation towards…

We investigate the correlation between extinction and H~{\sc i} and CO emission at intermediate and high Galactic latitudes ($|b|>10\degr$) within the footprint of the Xuyi Schmidt Telescope Photometric Survey of the Galactic anticentre…

Astrophysics of Galaxies · Physics 2015-06-23 B. -Q. Chen , X. -W. Liu , H. -B. Yuan , Y. Huang , M. -S. Xiang