Results 31 to 40 of about 21,871 (195)
Survey of Very Broad Diffuse Interstellar Bands [PDF]
The Astronomical Journal, 2020 Abstract This paper considers a very special set of a few interstellar features—broad diffuse interstellar bands (DIBs) at 4430, 4882, 5450, 5779, and 6175 ÅÅ. The set is small, and measurements of equivalent widths of these DIBs are challenging because of severe stellar, interstellar, and sometimes, also telluric contaminations inside ...
G. Galazutdinov +5 more
openaire +2 more sources
Evidence for the naphthalene cation in a region of the interstellar medium with anomalous microwave emission [PDF]
, 2008 We report high resolution spectroscopy of the moderately reddened (A$_V$=3) early type star Cernis 52 located in a region of the Perseus molecular cloud complex with anomalous microwave emission.
A. Manchado +24 more
core +3 more sources
Electronic Spectroscopy of Cold Gas-Phase Ions in a Cryogenic Ion Trap: Vibronic States, Bonding Characteristics, and Photochemistry. [PDF]
Chem Asian JRecent development of cryogenic ion‐trap‐based instrumentation has extended the scope of gas‐phase laser spectroscopy to a wide variety of nonvolatile ions, including carbocations and protonated hydrocarbons, organic dyes, host‐guest complexes, micro‐hydrated ions, hypervalent ions, metal clusters, and ionic intermediates formed in solution.
Muramatsu S, Koyama M, Inokuchi Y.
europepmc +2 more sources
Polyacenes and diffuse interstellar bands [PDF]
Astronomy & Astrophysics, 2019 The identification of the carriers of the diffuse interstellar bands (DIBs) remains to be established, with the exception of five bands attributed to C60+, although it is generally agreed that DIB carriers should be large carbon-based molecules (with ~10–100 atoms) in the gas phase, such as polycyclic aromatic hydrocarbons (PAHs), long carbon chains or
A. Omont, H. F. Bettinger, C. Tönshoff
openaire +3 more sources
Chemistry, 2021 Few anions exhibit electronically excited states, and, if they do, the one or two possible excitations typically transpire beyond the visible spectrum into the near-infrared.
Taylor J. Santaloci, Ryan C. Fortenberry
doaj +1 more source
Interstellar fullerene compounds and diffuse interstellar bands [PDF]
Astronomy & Astrophysics, 2016 29 pages, 6 figures, revised as published in Astronomy and ...
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Diffuse Interstellar Bands in Emission [PDF]
Proceedings of SALT Science Conference 2015 — PoS(SSC2015), 2015 AbstractRecent Fabry-Pérot observations towards the galaxy NGC 1325 with the Southern African Large Telescope (SALT) led to the serendipitous discovery of an emission feature centered at 661.3 nm arising from material in the interstellar medium (ISM) of our Galaxy; this emission feature lies at the wavelength of one of the sharper and stronger diffuse ...
T. B. Williams +4 more
openaire +2 more sources
Fullerenes, PAHs, Amino Acids and High Energy Astrophysics
Acta Polytechnica CTU Proceedings, 2014 We present theoretical, observational and laboratory work on the spectral properties of fullerenes and hydrogenated fullerenes. Fullerenes in its various forms (individual, endohedral, hydrogenated, etc.) can contribute to the UV bump in the extinction ...
Susana Iglesias-Groth
doaj +1 more source
Joint Modelling of Dust Scattering and Thermal Emission: The Spider Complex
The Astrophysical Journal, 2023 Observations across the electromagnetic spectrum of radiative processes involving interstellar dust—emission, absorption, and scattering—are used to constrain the parameters of dust models and more directly to aid in foreground removal of dust for ...
Jielai Zhang +6 more
doaj +1 more source
SpeX Near-infrared Spectroscopic Extinction Curves in the Milky Way
The Astrophysical Journal, 2022 Interstellar dust extinction curves provide valuable information about dust properties, including the composition and size of the dust grains, and are essential to correct observations for the effects of interstellar dust.
Marjorie Decleir +9 more
doaj +1 more source