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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…

Astrophysics of Galaxies · Physics 2026-01-16 Ruoyi Zhang , Haibo Yuan , Bingqiu Chen , Maosheng Xiang , Yang Huang , Xiaowei Liu , Jifeng Liu

Context. Observations of quasars shining through foreground galaxies, offer a way to probe the dust extinction curves of distant galaxies. Interesting objects for this study are found in strong gravitational lensing systems, where the…

Astrophysics · Physics 2009-11-13 Linda Ostman , Ariel Goobar , Edvard Mortsell

We present a catalog of dust clouds at high Galactic latitude based on the Planck 857 GHz dust emission data. Using a clustering hierarchical algorithm, 315 dust cloud at high Galactic latitudes are identified. Additionally, using the…

Astrophysics of Galaxies · Physics 2024-08-14 Mingxu Sun , Biwei Jiang , Helong Guo , Wenyuan Cui

Dust in the diffuse interstellar medium remains incompletely understood with regard to the structure, composition, size distribution, and alignment properties of the grains. Joint observations of reddening, starlight polarisation spectra,…

Astrophysics of Galaxies · Physics 2026-05-27 Ralf Siebenmorgen , Stefano Bagnulo , Lapo Fanciullo , Thomas Vannieuwenhuyse , Vincent Guillet

We investigate the structure of our Galaxy's young stellar disc by fitting the distribution functions (DFs) of a new family to five-dimensional Gaia data for a sample of $47\,000$ OB stars. Tests of the fitting procedure show that the young…

Astrophysics of Galaxies · Physics 2022-07-20 Chengdong Li , James Binney

We present a large, homogeneous catalogue of molecular clouds within 4 kpc from the Sun at low Galactic latitudes ($|b|$ $<$ 10\degr) with unprecedented accurate distance determinations. Based on the three-dimensional dust reddening map and…

Astrophysics of Galaxies · Physics 2020-02-12 B. -Q. Chen , G. -X. Li , H. -B. Yuan , Y. Huang , Z. -J. Tian , H. -F. Wang , H. -W. Zhang , C. Wang , X. -W. Liu

Interstellar absorption in the galactic plane is highly variable from one direction to another. In this paper colour excesses and distances from a new open cluster sample are used to investigate the spatial distribution of the interstellar…

Astrophysics · Physics 2007-05-23 Bing Chen , Jean Luc Vergely , Bernard Valette , Giovanni Carraro

We chart the expected Galactic distribution of neutron stars and black holes. These compact remnants of dead stars -- the Galactic underworld -- are found to exhibit a fundamentally different distribution and structure to the visible…

Astrophysics of Galaxies · Physics 2022-10-18 David Sweeney , Peter Tuthill , Sanjib Sharma , Ryosuke Hirai

Large stellar surveys are sensitive to interstellar dust through the effects of reddening. Using extinctions measured from photometry and spectroscopy, together with three-dimensional (3D) positions of individual stars, it is possible to…

Astrophysics of Galaxies · Physics 2018-10-31 Sara Rezaei Kh. , Coryn A. L. Bailer-Jones , David W. Hogg , Mathias Schultheis

This study is an investigation of the stellar density profile of the Galactic disc in the Anticentre direction. We select over 40,000 early A stars from IPHAS photometry in the Galactic longitude range 160 < l < 200 close to the equatorial…

We derive the Sun's offset from the local mean Galactic plane($z_\odot$) using the observed $z$ distribution of young pulsars. Pulsar distances are obtained from measurements of annual parallax, HI absorption spectra or associations where…

Solar and Stellar Astrophysics · Physics 2017-05-03 J. M. Yao , R. N. Manchester , N. Wang

By modelling the axis ratio distribution of SDSS DR8 galaxies we find the intrinsic 3D shapes of spirals and ellipticals. We use morphological information from the Galaxy Zoo project and assume a non-parametric distribution intrinsic of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Silvio Rodríguez , Nelson D. Padilla

We examine the three-dimensional structure and dust extinction properties in a ~ 200 pc $\times$ 100 pc region in the southwest bar of the Small Magellanic Cloud (SMC). We model a deep Hubble Space Telescope optical color-magnitude diagram…

The recent results obtained by the modern telescopes and spacecrafts allow us for the first time to compare directly the mass, spatial density and size distribution of the dust grains in the regions of their production, processing and…

Solar and Stellar Astrophysics · Physics 2017-07-26 George Gontcharov

Galactic disk warp has been widely characterized by stellar distributions and stellar kinematics but has not been traced by stellar chemistry. Here, we use a sample with over 170,000 red clump (RC) stars selected from LAMOST and APOGEE…

Astrophysics of Galaxies · Physics 2024-12-18 Weixiang Sun , Han Shen , Biwei Jiang , Xiaowei Liu

We present high-resolution (<0.7") ground-based images of the edge-on spiral galaxies NGC 891 (D=9.5 Mpc) and NGC 4013 (D=17 Mpc) acquired with the WIYN 3.5-m telescope. These BVI + H-alpha images reveal complex webs of dusty interstellar…

Astrophysics · Physics 2007-05-23 J. Christopher Howk , Blair D. Savage

We present a deep, high-angular resolution 3D dust map of the southern Galactic plane over $239^\circ < \ell < 6^\circ$ and $|b| < 10^\circ$ built on photometry from the DECaPS2 survey, in combination with photometry from VVV, 2MASS, and…

We present the first comparisons of a newly developed Galactic Structure and Kinematic Model to magnitude and color counts, as well as relative proper motions, in the fields of the open clusters NGC 188 [(l, b)= (122.8 deg, +22.4 deg)] and…

Astrophysics · Physics 2009-10-28 R. A. Mendez , W. F van Altena

Dust is a ubiquitous component in our Galaxy. It accounts for only $1\%$ mass of the ISM but still is an essential part of the Galaxy. It affects our view of the Galaxy by obscuring the starlight at shorter wavelengths and re-emitting in…

Astrophysics of Galaxies · Physics 2023-11-17 Namita Uppal , Shashikiran Ganesh , Santosh Joshi , Mrinmoy Sarkar , Prachi Prajapati , Athul Dileep
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