Results 31 to 40 of about 678,354 (195)
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
Luminosity class of the symbiotic stars 4U1954+319 and ZZ CMi [PDF]
Serbian Astronomical JournalWe performed optical photometry and spectral observations of the symbiotic stars 4U1954+319 and ZZ CMi. For 4U1954+319, using high-resolution spectra, we, measure the equivalent widths of diffuse interstellar bands (DIBs) and estimate the interstellar ...
Zamanov R. +10 more
doaj +1 more source
Chemistry, 2022 Dicyano-functionalized benzene and naphthalene anion derivatives exhibit a relatively rich population of electronically excited states in stark contrast to many assumptions regarding the photophysics of anions in general.
Marie E. Strauss +2 more
doaj +1 more source
A JWST Survey for Planetary Mass Brown Dwarfs in IC 348
The Astronomical Journal, 2023 We have obtained images of the center of the star-forming cluster IC 348 with the James Webb Space Telescope and have identified brown dwarf candidates based on their photometry and point-like flux profiles. Low-resolution spectroscopy has been performed
K. L. Luhman +7 more
doaj +1 more source
Electronic spectroscopy of open-chain and aromatic hydrocarbon cations in neon matrices [PDF]
, 2012 Considerable scientific interest has been devoted to the so-called diffuse interstellar bands (DIBs)—hundreds of absorption features of different strength and width, located in the visible and near infrared, and arising from the interstellar medium ...
Nagy, Adam
core +1 more source
Estimating Molecular Gas Content in Galaxies from Polycyclic Aromatic Hydrocarbon Emission
The Astrophysical Journal, 2023 Emission from polycyclic aromatic hydrocarbons (PAHs), a commonly used indicator of star formation activity in galaxies, also has the potential to serve as an effective empirical tracer of molecular gas.
Lulu Zhang, Luis C. Ho
doaj +1 more source
Extended correlations between diffuse interstellar bands [PDF]
The systematic analysis of the correlations between diffuse interstellar bands (DIBs) is extended to weak DIBs through the comprehensive catalogue of the Apache Peak Observatory (APO) of 559 DIBs in 25 lines of sight with diverse interstellar properties.
Omont, Alain
core +3 more sources
Cyclic C4+ as the Carrier of the Diffuse Interstellar Band at 503.9 nm?
The Astrophysical JournalThe diffuse interstellar bands (DIBs) have remained a mystery in astronomy since their discovery over a century ago. The only currently known carrier is ${{\rm{C}}}_{60}^{+}$ , responsible for five DIBs, while more than 550 are yet to be interpreted. The
Serge. A. Krasnokutski +7 more
doaj +1 more source
Clathrate hydrate crystallization
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley +1 more source
Diffuse interstellar bands in reflection nebulae [PDF]
, 1994 A Monte Carlo code for radiation transport calculations is used to compare the profiles of the lambda lambda 5780 and 6613 Angstrom diffuse interstellar bands in the transmitted and the reflected light of a star embedded within an optically thin dust ...
Henning, Thomas +3 more
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