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

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Presentation transcript:

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

θ Ophiuchi ν Eridani γ Pegasi 12 Lacertae

ν pulsational frequency f-parameter

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

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

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)

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)

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

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)

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)

HD 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

HD 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

ν3= c/d =0, ν6= c/d =1

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

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

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

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

ν 1 = c/d =0, ν 5 = c/d =1

HD V = 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

HD V = 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

ν 4 = c/d =0, ν 2 = c/d =1

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

ν 4 = c/d =0, ν 2 = c/d =1 50%

ν 4 = c/d =0, ν 2 = c/d =1 50%

HD 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

HD 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

ν 1 = c/d =0, ν 4 = c/d =1, ν 6 = c/d =1

ν 1 = c/d =0

ν B = c/d, =2

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

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