| High Resolution Spectroscopy of Halo Stars in the Near UV and Blue Region I. Spectra in the Wavelength Region 3550-5000 A |
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| 作者姓名： | V.G.Klochkova S.V.Ermakov V.E.Panchuk |
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| 作者单位： | National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 Special Astrophysical Observatory，Russian Academy of Sciences，Nighnij Arkhyz，369167 Karachai-Cherkessia，Russia，National Astronomical Observatories Chinese Academy of Sciences，Beijing 100012 Special Astrophysical Observatory，Russian Academy of Sciences，Nighnij Arkhyz，369167 Karachai-Cherkessia，Russia，National Astronomical Observatories Chinese Academy of Sciences，Beijing 100012 Special Astrophysical Observatory，Russian Academy of Sciences，Nighnij Arkhyz，369167 Karachai-Cherkessia，Russia |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | An atlas of high resolution (R = 60 000) CCD-spectra in the wavelength range 3500-5000A is presented for four objects in metallicity range -3.0 < Fe/H] < -0.6, temperature range 4750 < Teff < 5900 K, and surface gravity range 1.6 < lgg < 5.0. We describe the calibration of the stellar atmospheric parameters using Alonso's formula based on the method of infrared flux and outline the determination of the abundances of a total number of 25 chemical elements. An analysis of the abundance determination errors for different chemical elements is carried out, and a method is provided for the observations and reduction of spectral material. Properties of the method of producing an atlas of spectra and line identifications are described.
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High Resolution Spectroscopy of Halo Stars in the Near UV and Blue Region I. Spectra in the Wavelength Region 3550-5000(A) |
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| V.G.Klochkova,S.V.Ermakov,V.E.Panchuk.High Resolution Spectroscopy of Halo Stars in the Near UV and Blue Region I. Spectra in the Wavelength Region 3550-5000 A[J].Chinese Journal of Astronomy and Astrophysics,2006,6(5). |
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| Authors: | V G Klochkova Gang Zhao S V Ermakov V E Panchuk |
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| Abstract: | An atlas of high resolution (R = 60 000) CCD-spectra in the wavelength range 3500-5000A is presented for four objects in metallicity range -3.0 < Fe/H] < -0.6, temperature range 4750 < Teff < 5900 K, and surface gravity range 1.6 < lgg < 5.0. We describe the calibration of the stellar atmospheric parameters using Alonso's formula based on the method of infrared flux and outline the determination of the abundances of a total number of 25 chemical elements. An analysis of the abundance determination errors for different chemical elements is carried out, and a method is provided for the observations and reduction of spectral material. Properties of the method of producing an atlas of spectra and line identifications are described. |
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| Keywords: | stars: halo stars - stars: G K-type - stars: spectra - stars: UV-spectra |
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