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The slopes of interstellar reddening lines in the 2MASS J-H versus H-Ks diagrams for 26 areas in the inner Galaxy (from Vulpecula to Centaurus) are determined. For this aim we use the red-clump giants located inside and behind spiral arms,…

Astrophysics of Galaxies · Physics 2009-02-09 V. Straizys , V. Laugalys

We have made a Galactic extinction map of the Cygnus region with 5' spatial resolution. The selected area is 80^\circ to 90^\circ in the Galactic longitude and -4^\circ to 8^\circ in the Galactic latitude. The intensity at 140 \mum is…

Astrophysics of Galaxies · Physics 2015-05-19 Tsunehito Kohyama , Hiroshi Shibai , Misato Fukagawa , Yasunori Hibi

The ISOGAL project is a survey of the stellar populations, structure, and recent star formation history of the inner disk and bulge of the Galaxy. ISOGAL combines 15 and 7micron ISOCAM observations with DENIS IJKs data to determine the…

We develop the ``simulated extinction method'' to measure average foreground Galactic extinction from field galaxy number-counts and colors. The method comprises simulating extinction in suitable reference fields by changing the isophotal…

Astrophysics · Physics 2009-10-30 Rosa A. Gonzalez , Andrew S. Fruchter , Boris Dirsch

We determine 37 differential extinctions in 23 gravitational lens galaxies over the range 0 < z_l < 1. Only 7 of the 23 systems have spectral differences consistent with no differential extinction. The median differential extinction for the…

The Milky Way's central parsec is a highly extinguished region with a population of high-proper-motion stars. We have tracked 145 stars for $\sim$10 years at wavelengths between 1 and 4 microns to analyze extinction effects in…

Astrophysics of Galaxies · Physics 2024-08-13 Z. Haggard , A. M. Ghez , S. Sakai , A. K. Gautam , T. Do , J. R. Lu , M. Hosek , M. R. Morris , S. Granados

We present a dust-column--dependent extinction curve parameters for ultraviolet wavelengths at high Galactic latitudes. This extinction function diverges from previous work in that it takes into account the results of Peek & Schiminovich…

Astrophysics of Galaxies · Physics 2013-11-14 J. E. G. Peek

In order to study the properties and effects of high Galactic latitude dust we present an analysis of 373,303 galaxies selected from the Galaxy Evolution Explorer (GALEX) All-Sky Survey and Wide-Field Infrared Explorer (WISE) All-Sky Data…

Astrophysics of Galaxies · Physics 2015-06-15 J. E. G. Peek , David Schiminovich

Selection effects can bedevil the inference of the properties of a population of astronomical catalogues, unavoidably biasing the observed catalogue. This is particularly true when mapping interstellar extinction in three dimensions: more…

Astrophysics of Galaxies · Physics 2015-08-06 S. E. Sale

Characterizing the structure of the Galactic interstellar medium (ISM) in three dimensions is of high importance for accurate modeling of dust emission as a foreground to the Cosmic Microwave Background (CMB). At high Galactic latitude,…

Astrophysics of Galaxies · Physics 2020-10-22 G. V. Panopoulou , D. Lenz

The Sun is located close to the Galactic mid-plane, meaning that we observe the Galaxy through significant quantities of dust. Moreover, the vast majority of the Galaxy's stars also lie in the disc, meaning that dust has an enormous impact…

Astrophysics of Galaxies · Physics 2024-01-24 Amery Gration , John Magorrian

I review the literature covering the issue of interstellar extinction toward the Milky Way bulge, with emphasis placed on findings from planetary nebulae, RR Lyrae, and red clump stars. I also report on observations from HI gas and globular…

Solar and Stellar Astrophysics · Physics 2016-07-06 David M. Nataf

Accurate astrometric and photometric measurements from Gaia have led to the construction of 3D dust extinction maps which can now be used for estimating the integrated extinctions of Galactic sources located within 5 kpc. These maps based…

Solar and Stellar Astrophysics · Physics 2024-10-15 Snehalata Sahu , Pier-Emmanuel Tremblay , Rosine Lallement , Seth Redfield , Boris T. Gaensicke

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…

We have investigated the shape of the extinction curve in the infrared up to ~25 {\mu}m for the Orion A star-forming complex. The basis of this work is near-infrared data acquired with VISTA, in combination with Pan-STARRS and mid-infrared…

Astrophysics of Galaxies · Physics 2018-06-20 Stefan Meingast , João Alves , Marco Lombardi

Extinction by intergalactic gray dust introduces a magnitude redshift dependent offset in the standard-candle relation of SN Ia. This leads to overestimated luminosity distances compared to a dust-free universe. Quantifying the amplitude of…

Astrophysics · Physics 2008-11-26 Pier Stefano Corasaniti

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…

Astrophysics of Galaxies · Physics 2025-11-18 M. Barbillon , A. Recio-Blanco , P. de Laverny , P. A. Palicio

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 explore red stellar populations toward the W3 giant molecular cloud through the use of optical-to-infrared (IR) photometry and Gaia DR 3 data, simultaneously characterizing stellar content and properties of dust in the molecular medium.…

Astrophysics of Galaxies · Physics 2024-10-29 J. L. Campbell , P. G. Martin , S. Song , M. Rahman , L. Einstein

We report results concerning the distribution and properties of galactic extinction at high galactic latitudes derived from stellar statistics using the Sloan Digital Sky Survey (SDSS). We use the classical Wolf diagram method to identify…

Astrophysics of Galaxies · Physics 2015-05-14 Evgeny Gorbikov , Noah Brosch