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C IV

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C IV

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  1. Long term variability of the coronal and post – coronal regionsof the Oe star HD 149757 (ζ Oph)Antoniou, A.1, Danezis, E.1, Lyratzi, E.1,Nikolaidis, D.1, Popović, L. Č.2 & Dimitrijević, M. S.21. University of Athens, Faculty of Physics, Department of Astrophysics, Astronomy and Mechanics, Panepistimioupoli, Zographou 157 84,Athens – Greece.2. Astronomical Observatory, Volgina 7, 11160 Belgrade, Serbia.

  2. N V N IV C IV λ 1548.155 Å λ 1550.774 Å λ 1238.821 Å λ 1242.804 Å λ 1718.80 Å

  3. C IV regions Vrot, Vrad, Vrand: Constant with time Rotational Velocities: a component: 1400 km/s b component: 950 km/s Radial Velocities: a component: -800 km/s b component: -700 km/s Random Velocities: a component: 320 km/s b component: 90 km/s

  4. Column Density (CD) in 1010 cm-2 of each one of the C IV resonance lines for the independent density regions of matter which create the satellite components. λ 1548.155 Å a component: 2.15×1010 cm-2 b component: 0.72×1010 cm-2 λ1550.774 Å a component: 1.98×1010 cm-2 b component: 0.66×1010 cm-2

  5. N IV region GR method Vrad, Vrand,CD: Constant with time Radial Velocities: -47 km/s Random Velocities: 262 km/s Column Density: 1.09×1010 cm-2

  6. N V regions GR method Vrad, Vrand: Constant with time Radial Velocities: a component: -1138 km/s b component: -1374 km/s c component: -1450 km/s Random Velocities: a component: 797 km/s b component: 152 km/s c component: 71 km/s

  7. Column Density (CD) in 1010 cm-2 of each one of the N V resonance lines for the independent density regions of matter which create the satellite components. λ 1238.821Å a component: 1.13×1010 cm-2 b component: 0.25×1010 cm-2 c component: 0.07×1010 cm-2 λ1242.804 Å a component: 1.03×1010 cm-2 b component: 0.23×1010 cm-2 c component: 0.06×1010 cm-2

  8. A statistical study of physical parameters of the C IV density regions in 20 Oe starsAntoniou, A.1, Danezis, E.1, Lyratzi, E.1,Nikolaidis, D.1, Popović, L. Č.2 &Dimitrijević, M. S.21. University of Athens, Faculty of Physics, Department of Astrophysics, Astronomy and Mechanics, Panepistimioupoli, Zographou 157 84,Athens – Greece.2. Astronomical Observatory, Volgina 7, 11160 Belgrade, Serbia.

  9. Rotational Velocities: a component:1458 km/s b component:821 km/s c component: 251 km/s d component: 133 km/s e component: 65 km/s Radial Velocities: a component:-2066 km/s b component: -1743 km/s c component: -1235 km/s d component: -469 km/s e component: -80 km/s

  10. Random Velocities: a component:187 km/s b component:163 km/s c component: 130 km/s d component: 108 km/s e component: 56 km/s FWHM: a component: 13.0 Å b component: 6.2 Å c component: 2.2 Å d component: 1.2 Å e component: 0.4 Å

  11. Absorbed Energy (E) λ 1238.821Å a component: 5.18 eV b component: 3.21 eV c component: 1.39 eV d component: 0.53 eV e component: 0.24 eV λ 1242.804Å a component: 4.76 eV b component: 2.85eV c component: 1.26 eV d component: 0.48 eV e component: 0.22 eV

  12. Column Density (CD) λ 1238.821Å a component: 5.65 ×1010 cm-2 b component: 4.58 ×1010 cm-2 c component: 3.65 ×1010 cm-2 d component: 2.62 ×1010 cm-2 e component: 1.17 ×1010 cm-2 λ1242.804 Å a component: 5.54 ×1010 cm-2 b component: 4.39 ×1010 cm-2 c component: 3.56 ×1010 cm-2 d component: 2.56 ×1010 cm-2 e component: 1.17 ×1010 cm-2

  13. The N IV region in the spectra of 20 Oe starsAntoniou, A.1, Danezis, E.1, Lyratzi, E.1,Nikolaidis, D.1, Popović, L. Č.2 & Dimitrijević, M. S.21. University of Athens, Faculty of Physics, Department of Astrophysics, Astronomy and Mechanics, Panepistimioupoli, Zographou 157 84,Athens – Greece.2. Astronomical Observatory, Volgina 7, 11160 Belgrade, Serbia.

  14. Two levels of Vrad, Vrand, FWHM Radial Velocities First level: -350 and -150 km/s Second level: -70 km/s Random Velocities First level: 350 and 220 km/s Second level: 150 and 50 km/s FWHM First level: 5 and 3 Ǻ Second level: 2 and 1 km/s Ǻ

  15. Two levels of Absorbed Energy and Column Density Absorbed Energy (E) First level: 2 and 1.2 eV Second level: 0.6 and 0.4 eV Column Density (CD) First level: 4.5×1010 cm-2 and 3×1010 cm-2 Second level: 2.5×1010 cm-2

  16. Investigation of the post coronal density regions of Oe stars,through the N V UV resonance linesAntoniou, A.1, Danezis, E.1, Lyratzi, E.1,Nikolaidis, D.1, Popović, L. Č.2 & Dimitrijević, M. S.21. University of Athens, Faculty of Physics, Department of Astrophysics, Astronomy and Mechanics, Panepistimioupoli, Zographou 157 84,Athens – Greece.2. Astronomical Observatory, Volgina 7, 11160 Belgrade, Serbia.

  17. Vrot: 1st level: 1800 and 1100 km/s 2nd level: 400 and 200 km/s Vrad: 1st level: -2300 and -1500 km/s 2nd level: -500 and -100 km/s Vrand: 1st level: 400 and 200 km/s 2nd level: 150 and 80 km/s FWHM: 1st level: 18 and 10 Å 2nd level: 6 and 2 Å

  18. Two levels of Absorbed Energy (E) λ 1238.821Å First level: 7 and 3 eV Second level: 1 and 0.5 eV λ 1242.804Å First level: 6.3 and 2.7 eV Second level: 0.9 and 0.45 eV

  19. Two levels of Column Density (CD) λ 1238.821Å First level: 5×1010 cm-2 and 3×1010 cm-2 Second level: 2.5×1010 cm-2 λ1242.804 Å First level: 4.45×1010 cm-2 and 2.7×1010 cm-2 Second level: 2×1010 cm-2

  20. Thank you!!!

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