Results 41 to 50 of about 712,705 (147)

Linear and circular spectropolarimetry of diffuse interstellar bands

, 2011
Context. The identification of the carriers of diffuse interstellar bands (DIBs) remains one of the long-standing mysteries in astronomy. The detection of a polarisation signal in a DIB profile can be used to distinguish between a dust or gas-phase ...
B. H. Foing, F. Salama, P. Ehrenfreund, L. d’Hendecourt, P. J. Sarre, N. L. J. Cox   +5 more
core   +1 more source

Position displacement of diffuse interstellar bands [PDF]

We re-consider the already published phenomenon: the blue shift of diffuse interstellar bands, observed in spectra of HD34078 (AE Aur) and members of the Sco OB1 association, in particular HD152233. We have analyzed 29 diffuse bands.
Galazutdinov, G., Valyavin, G., Beletsky, Y., Krełowski, J.   +3 more
core   +1 more source

DIFFUSE INTERSTELLAR BANDS

, 1998
Author Institution: Department of Chemistry, The University of NottinghamThe unidentified diffuse interstellar absorption bands are observed in near-UV, visible and near-IR spectra recorded towards stars that are partially obscured by interstellar dust ...
Sarre, Peter J.
core   +1 more source

Diffuse interstellar bands in the spectra of Herbig Ae/Be stars and related objects

, 2003
We report a detection of weak diffuse interstellar bands (DIBs) in the close vicinity of 6 Herbig Ae/Be pre-main sequence stars. A common feature of these objects is the presence of a dusty shell where DIB carriers are apparently formed/destroyed.
G. A. Galazutdinov, O. A. Galazutdinova, V. P. Grinin   +2 more
core   +1 more source

The abundance of interstellar C60 molecules toward BD+31°643 and other stars

Astronomy & Astrophysics
Context. The diffuse interstellar bands (DIBs) at 9577 and 9632 Å are attributed to electronic transitions of the C60+ fullerene ion; thus, its column density in molecular clouds may be inferred.
Rouillé Gaël, Gredel Roland
doaj   +1 more source

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   +2 more sources

Electronic spectroscopy of cold cations in a 22-pole trap by indirect methods [PDF]

, 2013
The confining capabilities of a 22-pole ion trap have been employed to mea- sure electronic spectra of cations of astrophysical relevance. The ion trap sits on the head of a closed cycle cryostat, enabling collisional cooling of the confined ions with
Chakrabarty, Satrajit
core   +1 more source

A Theoretical Study of Carbon Nanotube Formation: Carriers of the Diffuse Interstellar Bands?

The Astrophysical Journal
Density functional theory (DFT) calculations have been conducted to probe the formation of carbon nanotubes (CNTs) from graphitic sheets in the presence of a simulated circumstellar shock wave.
A. Thakur, P. J. Lohr, J. J. Bernal, A. Asaduzzaman, K. Muralidharan, T. J. Zega, L. M. Ziurys   +6 more
doaj   +1 more source

Multi-Wavelength Observations and Modeling of Loop I

Galaxies, 2018
The article aims to overview the origin and current dynamical state of a giant structure on the northern galactic sky—the radio Loop I extending from ≈ − 45 ∘ to ≈ + 45 ∘ in longitudes and up to ≈ 80 ...
Yuri Shchekinov
doaj   +1 more source

On the hypothesis of H₂ as the carrier of the diffuse interstellar bands.

, 1995
In a laboratory experiment, employing an extreme ultraviolet/near-infrared double resonance technique, a recent hypothesis by Sorokin and Glownia on the carrier of the diffuse interstellar bands is tested.
Ubachs, W.M.G.; id_orcid, Hinnen, P.C.
core   +1 more source