Time series infrared spectroscopy of Mira variables. II - CO (second overtone) eight Mira variables and one SRa variable

1984 ◽  
Vol 56 ◽  
pp. 1 ◽  
Author(s):  
K. H. Hinkle ◽  
W. W. G. Scharlach ◽  
D. N. B. Hall
Keyword(s):  
Time Series ◽  
Infrared Spectroscopy ◽  
Mira Variables

scholarly journals The Pulsation of M-type Miras: Multi-Epoch ISO-SWS Observations and Dynamical Models

2002 ◽  
Vol 185 ◽  
pp. 538-541 ◽  
Author(s):  
B. Aringer ◽  
U.G. Jørgensen ◽  
F. Kerschbaum ◽  
J. Hron ◽  
S. Höfner
Keyword(s):  
Time Series ◽  
Radiative Transfer ◽  
Wavelength Range ◽  
Infrared Range ◽  
Dynamical Models ◽  
Long Period ◽  
Mira Variables ◽  
Long Period Variables ◽  
Hydrostatic Model ◽  
Additional Assumptions

AbstractWe present time series of observed and synthetic ISO-SWS spectra of oxygen-rich Mira variables covering the wavelength range between 2.36 and 7.75 μm. The calculations are based on new dynamical models, which have been computed with a non-grey radiative transfer taking into account all relevant molecular opacities. It turns out that many features in the ISO spectra of cool long period variables which could not be reproduced within the framework of classical hydrostatic model atmospheres nor with grey dynamical calculations can now be understood without any additional assumptions. This is especially true for the water bands, which dominate the opacity in the infrared range of M-type Miras.

scholarly journals Multifractals Properties on the Near Infrared Spectroscopy of Human Brain Hemodynamic

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Truong Quang Dang Khoa ◽  
Vo Van Toi
Keyword(s):  
Time Series ◽  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Real Life ◽  
Multifractal Spectrum ◽  
Singular Behavior ◽  
Maximum Expansion ◽  
Experimental Time Series ◽  
Hölder Exponents

Nonlinear physics presents us with a perplexing variety of complicated fractal objects and strange sets. Naturally one wishes to characterize the objects and describe the events occurring on them. Moreover, most time series found in “real-life” applications appear quite noisy. Therefore, at almost every point in time, they cannot be approximated either by the Taylor series or by the Fourier series of just a few terms. Many experimental time series have fractal features and display singular behavior, the so-called singularities. The multifractal spectrum quantifies the degree of fractals in the processes generating the time series. A novel definition is proposed called full-width Hölder exponents that indicate maximum expansion of multifractal spectrum. The obtained results have demonstrated the multifractal structure of near-infrared spectroscopy time series and the evidence for brain imagery activities.

High Resolution Infrared Spectroscopy and the Nature of Mira Variability

1979 ◽  
Vol 46 ◽  
pp. 264-272
Author(s):  
Donald N. B. Hall ◽  
Kenneth H. Hinkle ◽  
Stephen T. Ridgway
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Absorption Line ◽  
Optical Variability ◽  
Mira Variables ◽  
Visible Spectra ◽  
Optical Wavelengths

High resolution visible spectra of Mira variables are extremely complex and despite major observing programs both by Merrill and his colleagues and more recently Wallerstein, the relation between the emission and absorption line velocities measured at optical wavelengths and either the nature of the optical variability or the observed microwave features remains elusive.

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