Simulation of the emission lines radiated from cataclysmic variables

Cataclysmic variables are special celestial bodies because they have particular light curves and spectra.The mechanisms for generating emission lines radiated from dwarf novae in their quiescent phases are studied.We assume that the incident radiation field which is emitted by a hot source（white dwa...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2013-10, Vol.13 (10), p.1213-1218
Main Authors: He, Lin, Lü, Guo-Liang, Zhao, Yong-Heng
Format: Article
Language:English
Subjects:
Cataclysmic variables
Computer simulation
Emission
Incident radiation
Mathematical models
Simulation
Spectra
White dwarf stars
光变曲线
光谱
发射线
模拟观测
气体辐射
激变变星
物理条件
辐射场
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Summary:Cataclysmic variables are special celestial bodies because they have particular light curves and spectra.The mechanisms for generating emission lines radiated from dwarf novae in their quiescent phases are studied.We assume that the incident radiation field which is emitted by a hot source（white dwarf and boundary layer）irradiates the gaseous layer evaporated from the accretion disk,and the emission lines are radiated from the gas.We model the fluxes of emission lines by using the photoionization code CLOUDY.Using this method,we input some reasonable parameters and get a series of simulated spectra.In order to find a simulated spectrum which is the best fit to an observed spectrum,we use a cross-correlation method to match them.After the calculation,we use the approximation that the parameters of the simulated spectrum can simulate the observed spectrum.Finally,we learn more about the physical conditions of the system.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/13/10/008