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Przemysław Walczak Jadwiga Daszyńska-Daszkiewicz Uniwersytet Wrocławski Instytut Astronomiczny, Poland Wrocław, 21.08.2013.

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Presentation on theme: "Przemysław Walczak Jadwiga Daszyńska-Daszkiewicz Uniwersytet Wrocławski Instytut Astronomiczny, Poland Wrocław, 21.08.2013."— Presentation transcript:

1 Przemysław Walczak Jadwiga Daszyńska-Daszkiewicz Uniwersytet Wrocławski Instytut Astronomiczny, Poland Wrocław, 21.08.2013

2 θ Ophiuchi ν Eridani γ Pegasi 12 Lacertae

3 ν pulsational frequency f-parameter

4 f results from linear, nonadiabatic computations of stellar oscillations a ratio of the bolometric flux perturbation to the radial displacement at the photosphere level

5 frequency, stellar parameters, M, T eff shape of eigenfunctions chemical composition, (X, Z, mixture) opacity subphotospheric convection rotation, if

6 Daszyńska-Daszkiewicz, J., Dziembowski, W. A., Pamyatnykh, A. A, 2003, A&A 407, 999 (for δ Scuti stars) Daszyńska-Daszkiewicz, J., Dziembowski, W. A., Pamyatnykh, A. A, 2005, A&A 441, 641 (for β Cephei stars)

7 Daszyńska-Daszkiewicz, J., Dziembowski, W. A., Pamyatnykh, A. A, 2003, A&A 407, 999 (for δ Scuti stars) Daszyńska-Daszkiewicz, J., Dziembowski, W. A., Pamyatnykh, A. A, 2005, A&A 441, 641 (for β Cephei stars)

8 OP: H, He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Cr, Mn, Fe, Ni (Seaton, 2005, MNRAS, 362, L1)

9 OP: H, He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Cr, Mn, Fe, Ni OPAL: H, He, C, N, O, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Ti, Cr, Mn, Fe, Ni (Iglesias & Rogers 1996, ApJ 464, 943)

10 OP: H, He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Cr, Mn, Fe, Ni OPAL: H, He, C, N, O, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Ti, Cr, Mn, Fe, Ni LA : H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn (Magee et al. 1995, in ASP Conf. Ser. 78, 51)

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13 HD 157056 V = 3.25 mag B2IV Briquet, M., Lefever, K., Uytterhoeven, K., Aerts, C., 2005, MNRAS, 362, 619 Handler, G., Shobbrook, R. R., Mokgwetsi, T., 2005, MNRAS 362, 612

14 HD 157056 V = 3.25 mag B2IV Briquet, M., Lefever, K., Uytterhoeven, K., Aerts, C., 2005, MNRAS, 362, 619 Handler, G., Shobbrook, R. R., Mokgwetsi, T., 2005, MNRAS 362, 612

15 ν3= 7.4677 c/d =0, ν6= 7.8742 c/d =1

16 OP (Seaton 2005) ν3= 7.4677 c/d =0, ν6= 7.8742 c/d =1

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18 OP (Seaton 2005) ν3= 7.4677 c/d =0, ν6= 7.8742 c/d =1

19 HD 886 V=2.83 mag B2IV Handler, G.: 2009, MNRAS 398, 1339; Handler, G., Matthews, J.M., Eaton, J.A. et al.: 2009, ApJ 698, 56

20 HD 886 V=2.83 mag B2IV Handler, G.: 2009, MNRAS 398, 1339; Handler, G., Matthews, J.M., Eaton, J.A. et al.: 2009, ApJ 698, 56

21 ν 1 =6.58974 c/d =0, ν 5 =6.01616 c/d =1

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24 HD 214993 V = 5.228 mag B2III Desmet M., Briquet M., Thoul A., et al., 2009, MNRAS,396, 1460 Handler, G., Jerzykiewicz, M., Rodriguez, E., at al., 2006, MNRAS, 365, 327

25 HD 214993 V = 5.228 mag B2III Desmet M., Briquet M., Thoul A., et al., 2009, MNRAS,396, 1460 Handler, G., Jerzykiewicz, M., Rodriguez, E., at al., 2006, MNRAS, 365, 327

26 ν 4 =5.334357 c/d =0, ν 2 =5.066346 c/d =1

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29 Morel T., Butler K., Aerts C., Neiner C., Briquet M., 2006, A&A, 457, 651

30 ν 4 =5.334357 c/d =0, ν 2 =5.066346 c/d =1 50%

31 ν 4 =5.334357 c/d =0, ν 2 =5.066346 c/d =1 50%

32 HD 29248 V = 3.92 mag B2III Aerts C., de Cat P., Handler G., et al., 2004, MNRAS, 347, 463 Jerzykiewicz M., Handler G., Shobbrook R. R., et al., 2005, MNRAS 360, 619

33 HD 29248 V = 3.92 mag B2III Aerts C., de Cat P., Handler G., et al., 2004, MNRAS, 347, 463 Jerzykiewicz M., Handler G., Shobbrook R. R., et al., 2005, MNRAS 360, 619

34 ν 1 = 5.7632828 c/d =0, ν 4 = 5.6372470 c/d =1, ν 6 = 6.243847 c/d =1

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37 ν 1 = 5.7632828 c/d =0

38 ν B =0.61440 c/d, =2

39 θ Oph: OPAL(LA) γ Peg: no preferences 12 Lac: OP ν Eri: High frequency modes: OPAL/LA Low frequency mode: OP LA – excitation problems

40 Mass: 8-17 Msun Spectral type: O8-B6 Light amplitudes: 0.01 - 0.3 magnitudes Periods: 0.1 - 0.6 days (~2 – 15 hours)


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