Results 31 to 40 of about 40,765 (217)

Graphite and Interstellar Extinction [PDF]

open access: yesInternational Astronomical Union Colloquium, 1965
The Theory That Graphite Particles could be responsible for interstellar extinction is presented in references 1 and 2, and this paper will present evidence that further supports this contention. The complex dielectric constant (m = n(l — ik) for graphite has been measured as a function of energy by the authors of reference 3, and the optical constants
T. P. Stecher, Bertram Donn
openaire   +1 more source

Interstellar extinction from photometric surveys: application to four high-latitude areas

open access: yesOpen Astronomy, 2018
Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg   +13 more
doaj   +1 more source

The Mid-Infrared Extinction Law and its Variation in the Coalsack Nebula [PDF]

open access: yes, 2013
In recent years the wavelength dependence of interstellar extinction from the ultraviolet (UV), optical, through the near- and mid-infrared (IR) has been studied extensively.
Chen, Yang   +4 more
core   +1 more source

Interstellar Extinction and Elemental Abundances [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2021
Abstract Elements in the interstellar medium (ISM) exist in the form of gas or dust. The interstellar extinction and elemental abundances provide crucial constraints on the composition, size, and quantity of interstellar dust. Most of the extinction modeling efforts have assumed the total (gas and dust) abundances of the dust-forming ...
Zuo, W. B., Li, Aigen, Zhao, Gang
openaire   +2 more sources

Hubble Tarantula Treasury Project. IV. The extinction law [PDF]

open access: yes, 2015
We report on the study of interstellar extinction across the Tarantula nebula (30 Doradus), in the Large Magellanic Cloud, using observations from the Hubble Tarantula Treasury Project in the 0.3 - 1.6 micron range. The considerable and patchy extinction
Aloisi, Alessandra   +12 more
core   +4 more sources

The 2200 A bump and the UV extinction curve

open access: yes, 2012
The 2200 A bump is a major figure of interstellar extinction. Extinction curves with no bump however exist and are, with no exception, linear from the near-infrared down to 2500 A at least, often over all the visible-UV spectrum.
Bondar   +33 more
core   +1 more source

Distortion of Magnetic Fields in a Starless Core III: Polarization--Extinction Relationship in FeSt 1-457 [PDF]

open access: yes, 2018
The relationship between dust polarization and extinction was determined for the cold dense starless molecular cloud core FeSt 1-457 based on the background star polarimetry of dichroic extinction at near-infrared wavelengths.
Kandori, Ryo   +8 more
core   +2 more sources

Interstellar extinction by spheroidal dust grains [PDF]

open access: yesAstronomy & Astrophysics, 2005
10 pages, 6 figure To appear in A & A ...
Gupta, Ranjan   +4 more
openaire   +2 more sources

The nature of interstellar dust as revealed by light scattering

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
Interstellar dust was first identified through the extinction that it causes of optical starlight. Initially, observational and theoretical studies of extinction were made to identify simple ways of removing the effect of extinction.
D. A. Williams
doaj   +1 more source

Probing X-ray Absorption and Optical Extinction in the Interstellar Medium Using Chandra Observations of Supernova Remnants

open access: yes, 2016
We present a comprehensive study of interstellar X-ray extinction using the extensive Chandra supernova remnant archive and use our results to refine the empirical relation between the hydrogen column density and optical extinction.
Foight, Dillon   +3 more
core   +1 more source

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