Results 91 to 100 of about 2,793 (219)
Open Astronomy, 2003 We present a new color index vs. absolute magnitude calibration of 2MASS JHK photometry. For the A0 to ~G5 and M segments of the main sequence information on the amount of interstellar extinction and its location in space may be obtained.
Knude Jens, Fabricius Claus
doaj +1 more source
Interstellar Extinction in External Galaxies [PDF]
Symposium - International Astronomical Union, 1989 In this paper I review the existing measurements of the wavelength dependence of interstellar extinction arising from dust situated outside the Milky Way galaxy. This paper emphasizes studies of extinction in the Large and Small Magellanic Clouds. I discuss the UV extinction properties, as well as the optical and near-IR properties as determined from ...
openaire +1 more source
Interstellar extinction in the ultraviolet
, 1972 Interstellar extinction curves over the region 3600-1100 A for 17 stars are presented. The observations were made by the two Wisconsin spectrometers onboard the OAO-2 with spectral resolutions of 10 A and 20 A.
Bless, R. C., Savage, B. D.
core
The fullerane C60H2 and the interstellar extinction [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 A measurement of the ultraviolet-visible absorption spectrum of C 60 H 2 , the dihydride of the soccer-ball molecule C 60 , is discussed in the context of the variable component of the interstellar extinction. The spectrum of C 60 H 2 consists of a smooth continuum with a series of rounded peaks in the ultraviolet.
openaire +1 more source
Equivalent Width of the Interstellar Na i D1 and D2 Absorption Lines for Stars with E(B−V) < 0.15
New measurements of the equivalent width of the interstellar Na i D1 and D2 absorption lines for 62 bright B-type stars with E(B − V) < 0.15 are used to recalibrate the relation between these quantities in this low-reddening regime, and to quantify the ...
Maxted, Pierre F. L.
core +1 more source
Investigation of ultraviolet interstellar extinction
, 1973 Results concerning interstellar extinction in the ultraviolet are reported. These results were initially obtained by using data from main-sequence stars and were extended to include supergiants and emission stars. The principal finding of the analysis of
Payne, C., Haramundanis, K. L.
core
The Infrared Complex Refractive Index and Band Strengths of Coronene Thin Films
The Astrophysical JournalPolycyclic aromatic hydrocarbon (PAH) molecules have long been theorized to be present in a multitude of interstellar environments. The radio-frequency detections of specific cyanosubstituted PAH molecules in the Taurus Molecular Cloud have provided new ...
J. E. Roser, L. Jovanović, A. Ricca
doaj +1 more source
Extinction Distributions in Nearby Star-resolved Galaxies. I. M31
The Astronomical JournalAn extinction distribution of the Andromeda galaxy (M31) is constructed with member stars as tracers by fitting multiband photometric data from UKIRT/WFCAM, Panoramic Survey Telescope and Rapid Response System 1, and Gaia DR3.
Yuxi Wang +3 more
doaj +1 more source
The Astrophysical JournalUnderstanding variations in the dust extinction curve is imperative for using dust as a tracer of local structure in the interstellar medium, understanding dust chemistry, and performing extinction corrections.
Andrew K. Saydjari, Gregory M. Green
doaj +1 more source
Modelling interstellar extinction in three dimensions
, 2004 We have developed a technique that estimates the threedimensional extinction in the Galactic plane. The colour distribution (J-K) of stars from the Two Micron All Sky Survey (2MASS) are compared to that of stars from the Besançon model of the Galaxy, to ...
Marshall, Doug +3 more
core