Results 21 to 30 of about 408,744 (292)

Fuse measurements of far-ultraviolet extinction. I. Galactic sight lines [PDF]

, 2005
We present extinction curves that include data down to far-ultraviolet wavelengths (FUV; 1050-1200 Å) for nine Galactic sight lines. The FUV extinction was measured using data from the Far Ultraviolet Spectroscopic Explorer.
Rachford, Brian, Draine, Bruce T., Sofia, Ulysses J., Mathis, John S., Whittet, Douglas C.B., Clayton, Geoffrey C., Cartledge, Stefan I.B., Martin, Peter G., Gordon, Karl D., Wolff, Michael J., Snow, Theodore P.   +10 more
core   +1 more source

Observations of interstellar extinction in the ultraviolet with the OAO satellite [PDF]

Symposium - International Astronomical Union, 1970
We present a preliminary analysis of a number of spectrophotometric scans of reddened and unreddened early-type stars obtained with the OAO-A2 satellite. The principal findings are: (1) all the extinction curves show a ‘bump’ at 1/λ ≈ 4.5; (2) most extinction curves show a minimum at 1/λ ≈ 5.5–6.0; (3) all the extinction curves show a rapid rise in the
R. C. Bless, B. D. Savage
openaire   +1 more source

An Ultraviolet-to-Radio Broadband Spectral Atlas of Nearby Galaxies [PDF]

, 2006
Accepted for publication in the Astrophysical Journal; Fixed radio flux density units (mJy)The ultraviolet-to-radio continuum spectral energy distributions are presented for all 75 galaxies in the Spitzer Infrared Nearby Galaxies Survey (SINGS).
Roussel, Hervé, Bianchi, L., Engelbracht, C. W., Gordon, K. D., Boissier, Samuel, Armus, L., Kennicutt, R. C., Sosey, M. L., Jarrett, T. H., Leitherer, C., Li, A., Walter, F., de Paz, Armando Gil, Buckalew, B. A., Regan, M. W., Boselli, A., Smith, J. D. T., Meyer, M. J., Murphy, E. J., Bendo, G. J., Madore, B. F., Dale, D. A., Buat, V., Hollenbach, D. J., Helou, G., Hanson, H. M., Burgarella, D., Calzetti, D., Cannon, J. M., Thilker, D. A., Block, M.   +30 more
core   +2 more sources

Peculiar ultraviolet interstellar extinction

The Astrophysical Journal, 1983
In connection with investigations of the physical characteristics of interstellar dust, a study of objects with peculiar extinction might provide new insights about the composition, size distribution, formation, and destruction of the particulate matter. Meyer and Savage (1981) have found that the dust toward many stars exhibits peculiar UV extinction.
D. Massa, B. D. Savage, E. L. Fitzpatrick   +2 more
openaire   +1 more source

Testing new ideas regarding the nature of interstellar extinction [PDF]

, 2023
openStudy of interstellar extinction, from observations to modelling. Application to CCM extinction curves, in-depth analysis of diffuse interstellar bands (DIBs).
CIBODDO, VITTORIO
core  

Interstellar Extinction in the Middle Ultraviolet.

The Astrophysical Journal, 1964
Interstellar extinction in middle UV, deriving normalized curve from photoelectric photometry ...
Albert, III Boggess, Jan Borgman
openaire   +1 more source

Observed Interstellar Extinction in the Ultraviolet [PDF]

International Astronomical Union Colloquium, 1965
An Observational Program to measure stellar energy distributions - in the ultraviolet between 3000 Å and 1200 Å has recently been completed. The instrumentation used was similar to that reported in reference 1. A necessary preliminary for discussion of this material is some knowledge of the extinction due to interstellar absorption.
openaire   +1 more source

The variation of interstellar extinction in the ultraviolet [PDF]

Monthly Notices of the Royal Astronomical Society, 1986
Les donnees UV concernant 92 des 154 etoiles rougies observees ne peuvent pas etre interpretees au moyen d'une loi d'extinction interstellaire unique. Les variations de la courbe d'extinction requierent au moins deux agents, pour interpreter les modifications de la pente et l'intensite de la raie a 2200 ...
openaire   +1 more source

Extinction curves, extinction laws, and the failure of interstellar dust models

Astronomy & Astrophysics
The interpretation of ultraviolet Galactic interstellar extinction curves is obscured today by accumulated assumptions, such as a purported link between the 2200 Å bump and metallicity, that are not firmly supported by observations.
Zagury Frédéric
doaj   +1 more source

An Analysis of the Shapes of Ultraviolet Extinction Curves. IV. Extinction without Standards [PDF]

The Astronomical Journal, 2005
To appear in the Astronomical Journal (September 2005); 28 pages including 9 ...
Fitzpatrick, Edward L., Massa, Derck
openaire   +2 more sources