Results 121 to 130 of about 1,336 (203)

From Diffuse Interstellar Bands to comets: the organic connection

, 2018
International audienceThe analysis of dust grains collected by Rosetta spacecraft from comet 67/P Churyumov-Gerasimenko has shown that are constituted of about the same amount of minerals and of large organic molecules.
Lallement, Rosine, Bertaux, Jean-Loup
core  

Anomalous Extinction and Diffuse Interstellar Bands In the Direction of 2 Be Stars

, 1992
The Be stars HD 44458 and HD 63462, characterized by peculiar extinction curves, were observed spectroscopically in the range of well-known diffuse interstellar bands - DIBs - (5780, 5797, 6196 and 6203 angstrom). The lack of some of the diffuse features
J. KRELOWSKI, I. PORCEDDU, BENVENUTI, PIERO   +2 more
core  

VELOCITY STRUCTURE IN THE DIFFUSE INTERSTELLAR BANDS

, 2006
Author Institution: Center for Astrophysics and Space Astronomy, University of Colorado; Department of Astronomy and Astrophysics, The University of Chicago; Departments of Chemistry and Astronomy, University of; Illinois at Urbana-Champaign; Department ...
Drosback, Meredith M., Rachford, B. L., Snow, T. P., York, Donald G., Sonnentrucker, P., McCall, Benjamin J., Hobbs, L. M., Friedman, S. D., Thorburn, J. A., Welty, D. E.   +9 more
core  

Diffuse Interstellar Band Formation in Dense Clouds

, 1976
Measurements of the strengths of the diffuse interstellar bands at 4430, 5780 and 5797 Å show that the bands tend to be weak with respect to extinction in dense interstellar clouds.
Cohen, Judith G., Snow, Theodore P., Jr.
core  

Mapping the diffuse interstellar bands

Context. Diffuse interstellar bands (DIBs) are faint absorption features of a generally unknown origin. Observational constraints on their carriers have been provided in the vast majority of the cases thanks to observations in our Galaxy.
J. C. Stroo, C. D. van Erp, P. M. Weilbacher, A. Monreal-Ibero, J. V. Smoker   +4 more
core   +1 more source

Are aromatic hydrocarbons the carriers of the diffuse interstellar bands in the visible?

, 1986
Large Polycyclic Aromatic Hydrocarbons (PAH) are the likely origin of the Unidentified Infrared Emission Feature. The molecules or their ions are also attractive candidates for the carriers of the Diffuse Interstellar Bands (DIBs) in the visible range ...
Leger, A., Dhendecourt, L.
core  

UNUSUALLY WEAK DIFFUSE INTERSTELLAR BANDS TOWARD HD 62542

, 2001
As part of an extensive survey of diffuse interstellar bands (DIBs), we have obtained optical spectra of the moderately reddened B5 V star HD 62542, which is known to have an unusual UV extinction curve of the type usually identified with dark clouds ...
Theodore P. Snow, Julie Thorburn, Benjamin J. Mccall, Donald G. York, Paule Sonnentrucker, Daniel E. Welty, L. M. Hobbs   +6 more
core  

Ion Spectroscopy in the Context of the Diffuse Interstellar Bands: A Case Study with the Phenylacetylene Cation. [PDF]

ACS Earth Space Chem
Douglas-Walker TE, Campbell EK, Daly FC, Douin S, Gans B, Jacovella U, Maurice C, Odant R, Palotás J.   +8 more
europepmc   +1 more source

Iron Complexes as Potential Carriers of Diffuse Interstellar Bands: The Photodissociation Spectrum of Fe⁺(H₂O) at Optical Wavelengths. [PDF]

J Phys Chem A
Juanes M, Jin S, Saragi RT, van der Linde C, Ebenbichler A, Przybilla N, Ončák M, Beyer MK.   +7 more
europepmc   +1 more source

Wavelength-dependent photofragmentation of pyrazine. [PDF]

Sci Rep
Payra SS, Thakkar P, Lenka Y, Aravind G.
europepmc   +1 more source