The atmospheric parameters, abundances and magnetic field of the AR piscium primary

The high resolution, high S/N spectra for the chromospherically active binary AR Psc (=HD 8357) has been obtained by using the Coudé echelle spectrograph of the 2.16m telescope of Beijing Astronomical Observatory. The Hα lines present emission above the continuum and the profiles of CaII IRT2 (λ 854...

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Bibliographic Details
Published inNew astronomy Vol. 11; no. 4; pp. 287 - 292
Main Authors Hongguang, Shan, Xuefu, Liu, Shenghong, Gu
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2006
Subjects
Abundance
Astronomy
Atmospherics
Binary
Continuums
Emission spectroscopy
Flux
Magnetic field
Magnetic fields
Mathematical models
Spectra
Abundance
Magnetic field
Binary
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Summary:The high resolution, high S/N spectra for the chromospherically active binary AR Psc (=HD 8357) has been obtained by using the Coudé echelle spectrograph of the 2.16m telescope of Beijing Astronomical Observatory. The Hα lines present emission above the continuum and the profiles of CaII IRT2 (λ 854.2nm) & IRT3 (λ 866.2nm) show core emission. The net chromospheric flux of the had been calculated by using spectral subtraction. A detailed spectroscopic analysis and model calculation have yielded the atmospheric parameters of the primary of AR Psc. The abundances of 9 elements has been obtained. And, the measurement of Magnetic field have been made using the Stenflo–Lindegren statistical analysis and the profile-addition technique. A magnetic field strength B=2400±300G and a filling factor α=0.45±0.05 are obtained.
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ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2005.06.001