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We have explored the capabilities of dust extinction and $\gamma$ rays to probe the properties of the interstellar medium in the nearby anti-centre region. We have jointly modelled the $\gamma$-ray intensity and the stellar reddening,…

High Energy Astrophysical Phenomena · Physics 2018-08-22 Q. Remy , I. A. Grenier , D. J. Marshall , J. M. Casandjian

A sample of local galaxies for which far infrared and uv fluxes are available is used to estimate the characteristic dust extinction in galaxies and to test whether standard dust properties are plausible. Assuming galaxies can be…

Astrophysics · Physics 2009-11-07 Michael Rowan-Robinson

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

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

We report on sensitive sub-mm imaging observations of the prototype Seyfert~2/starburst galaxy NGC 1068 at 850 $\mu $m and 450 $\mu $m using the Submillimetre Common-User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope (JCMT).…

Astrophysics · Physics 2009-10-31 Padeli P. Papadopoulos , E. R. Seaquist

A detailed map of the distribution of dust at high Galactic latitudes is essential for future cosmic microwave background (CMB) polarization experiments because the dust, while diffuse, remains a significant foreground in these regions. We…

Astrophysics of Galaxies · Physics 2024-10-16 Matthew O'Callaghan , Gerry Gilmore , Kaisey S. Mandel

We report results of a near--infrared imaging survey of L977, a dark cloud in Cygnus seen in projection against the plane of the Milky Way. We use measurements of the near--infrared color excess and positions of the 1628 brightest stars in…

Astrophysics · Physics 2009-10-30 J. Alves , C. Lada , E. Lada , S. Kenyon , R. Phelps

We use spectra of more than 56,000 M dwarfs from the Sloan Digital Sky Survey (SDSS) to create a high-latitude extinction map of the local Galaxy. Our technique compares spectra from the stars in the SDSS Data Release 7 M dwarf sample in…

Astrophysics of Galaxies · Physics 2015-05-27 David O. Jones , Andrew A. West , Jonathan B. Foster

We have measured the extinction curve in the far-ultraviolet wavelength region of (900 -- 1200 A) using spectra obtained with the Berkeley EUV/FUV spectrometer during the ORFEUS-I and the ORFEUS-II missions in 1993 and 1996. From the…

Astrophysics · Physics 2009-11-07 T. P. Sasseen , M. Hurwitz , W. V. Dixon , S. Airieau

How dust scatters and absorbs starlight in the interstellar medium (ISM) contains important clues about the size and composition of interstellar dust. While the ultraviolet (UV) and visible interstellar extinction is well studied and can be…

Astrophysics of Galaxies · Physics 2015-06-19 Shu Wang , Aigen Li , B. W. Jiang

Mapping of near-infrared (NIR) scattered light is a recent method for the study of interstellar clouds, complementing other, more commonly used methods, like dust emission and extinction. Our goal is to study the usability of this method on…

Astrophysics of Galaxies · Physics 2014-04-10 J. Malinen , M. Juvela , V. -M. Pelkonen , M. G. Rawlings

We analyze the intrinsic flux ratios of various visible--near-infrared filters with respect to 3.5micron for simple and composite stellar populations, and their dependence on age, metallicity and star formation history. UV/optical light…

Astrophysics of Galaxies · Physics 2017-05-15 Duho Kim , Rolf A. Jansen , Rogier A. Windhorst

We are studying the column density distribution of all nearby giant molecular clouds. As part of this project we generated several all sky extinction maps. They are calculated using the median near infrared colour excess technique applied…

Astrophysics of Galaxies · Physics 2009-11-13 J. Rowles , D. Froebrich

We present a method to simultaneously infer the interstellar extinction parameters $A_0$ and $R_0$, stellar effective temperature $T_{\rm eff}$, and distance modulus $\mu$ in a Bayesian framework. Using multi-band photometry from SDSS and…

Astrophysics of Galaxies · Physics 2015-06-18 R. J. Hanson , C. A. L. Bailer-Jones

Aims: Mapping the interstellar medium in 3D provides a wealth of insights into its inner working. The Milky Way is the only galaxy for which detailed 3D mapping can be achieved in principle. In this paper, we reconstruct the dust density in…

Astrophysics of Galaxies · Physics 2020-08-06 R. H. Leike , M. Glatzle , T. A. Enßlin

We present a new set of high resolution dust extinction maps of the nearby and essentially starless Pipe Nebula molecular cloud. The maps were constructed from a concerted deep near-infrared imaging survey with the ESO-VLT, ESO-NTT, CAHA…

Astrophysics of Galaxies · Physics 2010-12-23 Carlos Gerardo Román-Zúñiga , João F. Alves , Charles J. Lada , Marco Lombardi

Investigating the chemical complexity of the interstellar medium (ISM) is key for understanding its physical nature and evolution. In this work, we study parsec-scale interstellar dust clouds in the neutral ISM of the Milky Way using two…

Astrophysics of Galaxies · Physics 2026-04-29 T. Ramburuth-Hurt , A. De Cia , J. -K. Krogager , C. Ledoux , A. J. Fox

To investigate the distribution of dust in Sb and Sc galaxies we have analyzed near-infrared and optical surface photometry for an unbiased sample of 37 galaxies. Since light in the $K$-band is very little affected by extinction by dust,…

This review describes our current understanding of interstellar extinction. This differ substantially from the ideas of the 20th century. With infrared surveys of hundreds of millions of stars over the entire sky, such as 2MASS,…

Astrophysics of Galaxies · Physics 2017-06-13 George Gontcharov

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
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