Spectral Energy Distribution Signatures of Jovian Planets around White Dwarf Stars

2001 ◽  
Vol 113 (788) ◽  
pp. 1227-1231 ◽  
Author(s):  
R. Ignace
Keyword(s):  
Energy Distribution ◽  
White Dwarf ◽  
Spectral Energy Distribution ◽  
Spectral Energy ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Jovian Planets

The Complete Spectral Energy Distribution and the Atmospheric Properties of the Helium-Rich White Dwarf MCT 0501−2858

1998 ◽  
Vol 500 (1) ◽  
pp. L41-L44 ◽  
Author(s):  
Stéphane Vennes ◽  
Jean Dupuis ◽  
Pierre Chayer ◽  
Elisha F. Polomski ◽  
William Van Dyke Dixon ◽  
...  
Keyword(s):  
Energy Distribution ◽  
White Dwarf ◽  
Spectral Energy Distribution ◽  
Spectral Energy

scholarly journals Complete spectral energy distribution of the hot, helium-rich white dwarf RX J0503.9–2854

2017 ◽  
Vol 598 ◽  
pp. A135 ◽  
Author(s):  
D. Hoyer ◽  
T. Rauch ◽  
K. Werner ◽  
J. W. Kruk ◽  
P. Quinet
Keyword(s):  
Energy Distribution ◽  
White Dwarf ◽  
Spectral Energy Distribution ◽  
Spectral Energy

scholarly journals The Time Dependence of the Phases of the Harmonics Relative to the 1490 sec Fundamental in PG1346+082

1989 ◽  
Vol 114 ◽  
pp. 296-299
Author(s):  
J. L. Provencal ◽  
J. C. Clemens ◽  
G. Henry ◽  
B. P. Hine ◽  
R. E. Nather ◽  
...  
Keyword(s):  
White Dwarf ◽  
Compact Object ◽  
Detailed Knowledge ◽  
Line Profiles ◽  
Pressure Broadening ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Adequate Understanding ◽  
Magnitude Variation ◽  
Hydrogen Lines

White dwarf stars provide important boundary conditions for the understanding of stellar evolution. An adequate understanding of even these simple stars is impossible without detailed knowledge of their interiors. PG1346+082, an interacting binary white dwarf system, provides a unique opportunity to view the interior of one degenerate as it is brought to light in the accretion disk of the second star as the primary strips material from its less massive companion (see Wood et at. 1987).PG1346+082 is a photometric variable with a four magnitude variation over a four to five day quasi-period. A fast Fourier transform (FFT) of the light curve shows a complex, time-dependent structure of harmonics. PG1346+082 exhibits flickering – the signature of mass transfer. The optical spectra of the system contain weak emission features during minimum and broad absorption at all other times. This could be attributed to pressure broadening in the atmosphere of a compact object, or to a combination of pressure broadening and doppler broadening in a disk surrounding the compact accretor. No hydrogen lines are observed and the spectra are dominated by neutral helium. The spectra also display variable asymmetric line profiles.

scholarly journals Influence of Microlensing on Spectral Anomalies of the Lensed Objects

2011 ◽  
Vol 20 (3) ◽  
Author(s):  
S. Simić ◽  
L. Č. Popović ◽  
P. Jovanović
Keyword(s):  
Energy Distribution ◽  
Spectral Energy Distribution ◽  
Angular Size ◽  
Black Body ◽  
Spectral Energy

AbstractHere we consider the influence of microlensing on the spectrum of a lensed object with the angular size 5 μas accepting that the composite emission of this object originates from three different regions arranged around its center. We assume that the lensed object has three concentric regions with a black-body emission; the temperatures of these regions are 10 000 K, 7500 K and 5000 K. We investigate how the integral spectral energy distribution (SED) of such stratified source changes due to microlensing by a group of solarmass stars. We find that the SED and flux ratios in the photometric B, V and R passbands show considerable changes during a microlens event. This indicates that the flux anomaly observed in some lensed quasars may be caused by microlensing of a stratified object.

New line profiles of sodium and potassium perturbed by helium for brown dwarf and very cool white dwarf stars

2008 ◽  
Author(s):  
M. Christova ◽  
N. F. Allard ◽  
J. F. Kielkopf ◽  
D. Homeier ◽  
F. Allard ◽  
...  
Keyword(s):  
White Dwarf ◽  
Line Profiles ◽  
Brown Dwarf ◽  
Dwarf Stars ◽  
White Dwarf Stars ◽  
Sodium And Potassium

scholarly journals Galaxy And Mass Assembly: the evolution of the cosmic spectral energy distribution from z = 1 to z = 0

2017 ◽  
Vol 470 (2) ◽  
pp. 1342-1359 ◽  
Author(s):  
S. K. Andrews ◽  
S. P. Driver ◽  
L. J. M. Davies ◽  
P. R. Kafle ◽  
A. S. G. Robotham ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Spectral Energy Distribution ◽  
Spectral Energy ◽  
Mass Assembly
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