Identification of geochemical polycyclic aromatic hydrocarbons from terpenes by high-resolution Shpol'skii effect fluorescence spectrometry

1983 ◽  
Vol 55 (6) ◽  
pp. 958-959 ◽  
Author(s):  
Marc. Ewald ◽  
Alain. Moinet ◽  
Alain. Saliot ◽  
Pierre. Albrecht
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
High Resolution ◽  
Aromatic Hydrocarbons ◽  
Fluorescence Spectrometry ◽  
Polycyclic Aromatic

scholarly journals The well correlated diffuse interstellar bands at λλ 6196, 6614 Å and their possible companions

2020 ◽  
Vol 496 (2) ◽  
pp. 2231-2240
Author(s):  
A Bondar
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
High Resolution ◽  
Aromatic Hydrocarbons ◽  
Correlation Coefficients ◽  
High Signal ◽  
Signal To Noise ◽  
B Stars ◽  
Diffuse Interstellar Bands ◽  
Polycyclic Aromatic ◽  
First Time

ABSTRACT Considered here is the interrelation between five diffuse interstellar bands (DIBs), λλ 5545, 6113, 6196, 6445 and 6614 Å. Two DIBs (λλ 6196 and 6614 Å) are already known as being well correlated with each other; their relation with three other weaker bands is investigated for the first time. To accomplish this task, high-resolution spectra (λ/δλ ≈100 000) with high signal-to-noise ratios (S/N) of 54 hot O–B stars with reddening 0.12–1.45 mag were used. Analysis of measured equivalent widths has allowed us to establish linear dependences and evaluate linear correlation coefficients as high as 0.968–0.988 between the intensities of these five DIBs. Such a degree of correlation may indicate their common origin. Several spacings in wavenumbers found between these DIBs correspond to the energies of vibrational transitions in some polycyclic aromatic hydrocarbons resulting in IR emissions at λλ 16.4, 11.3, 7.7, 6.2 and 3.3 μm.

scholarly journals HIGH-RESOLUTION IR ABSORPTION SPECTROSCOPY OF POLYCYCLIC AROMATIC HYDROCARBONS: THE REALM OF ANHARMONICITY

2015 ◽  
Vol 814 (1) ◽  
pp. 23 ◽  
Author(s):  
Elena Maltseva ◽  
Annemieke Petrignani ◽  
Alessandra Candian ◽  
Cameron J. Mackie ◽  
Xinchuan Huang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
High Resolution ◽  
Absorption Spectroscopy ◽  
Aromatic Hydrocarbons ◽  
Ir Absorption ◽  
Polycyclic Aromatic
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