testing microphysics data
DESCRIPTION
Przemysław Walczak Jadwiga Daszyńska-Daszkiewicz Uniwersytet Wrocławski Instytut Astronomiczny, Poland Wrocław, 21.08.2013. Testing microphysics data. β Cephei stars. θ Ophiuchi ν Eridani γ Pegasi 12 Lacertae. Asteroseismic tools. ν pulsational frequency f -parameter. - PowerPoint PPT PresentationTRANSCRIPT
TESTING MICROPHYSICS DATA
Przemysław WalczakJadwiga Daszyńska-DaszkiewiczUniwersytet Wrocławski Instytut Astronomiczny, Poland
Wrocław, 21.08.2013
θ Ophiuchiν Eridaniγ Pegasi
12 Lacertae
β CEPHEI STARS
ν pulsational frequency
f-parameter
ASTEROSEISMIC TOOLS
THE NONADIABATIC, COMPLEX PARAMETER f
f results from linear, nonadiabatic computations of stellar oscillations
a ratio of the bolometric flux perturbation tothe radial displacement at the photosphere level
VALUES OF f DEPEND ON:
frequency,
stellar parameters, M, Teff
shape of eigenfunctions
chemical composition, (X, Z, mixture)
opacity
subphotospheric convection
rotation, if
METHOD OF DETERMINATION OF f
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)
METHOD OF DETERMINATION OF f
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)
OPACITY TABLES
OP: H, He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Cr, Mn, Fe, Ni
(Seaton, 2005, MNRAS, 362, L1)
OPACITY TABLES
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)
OPACITY TABLES
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)
5M
10M
θ OPHIUCHI
HD 157056 V = 3.25 mag B2IV
Briquet, M., Lefever, K., Uytterhoeven, K., Aerts, C. , 2005, MNRAS, 362, 619Handler, G., Shobbrook, R. R., Mokgwetsi, T., 2005, MNRAS 362, 612
θ OPHIUCHI
HD 157056 V = 3.25 mag B2IV
Briquet, M., Lefever, K., Uytterhoeven, K., Aerts, C. , 2005, MNRAS, 362, 619Handler, G., Shobbrook, R. R., Mokgwetsi, T., 2005, MNRAS 362, 612
θ OPHIUCHI ν3= 7.4677 c/d l=0, ν6= 7.8742 c/d l=1
θ OPHIUCHI
OP (Seaton 2005)
ν3= 7.4677 c/d l=0, ν6= 7.8742 c/d l=1
θ OPHIUCHI ν3= 7.4677 c/d l=0, ν6= 7.8742 c/d l=1
θ OPHIUCHI
OP (Seaton 2005)
ν3= 7.4677 c/d l=0, ν6= 7.8742 c/d l=1
γ PEGASI
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
γ PEGASI
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
γ PEGASI ν1=6.58974 c/d l=0, ν5=6.01616 c/d l=1
γ PEGASI ν1=6.58974 c/d l=0, ν5=6.01616 c/d l=1
γ PEGASI ν1=6.58974 c/d l=0, ν5=6.01616 c/d l=1
12 Lacertae
HD 214993 V = 5.228 mag B2III
Desmet M., Briquet M., Thoul A., et al., 2009, MNRAS,396, 1460Handler, G., Jerzykiewicz, M., Rodriguez, E., at al., 2006, MNRAS, 365, 327
12 Lacertae
HD 214993 V = 5.228 mag B2III
Desmet M., Briquet M., Thoul A., et al., 2009, MNRAS,396, 1460Handler, G., Jerzykiewicz, M., Rodriguez, E., at al., 2006, MNRAS, 365, 327
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1Morel T., Butler K., Aerts C., Neiner C., Briquet M., 2006, A&A, 457, 651
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1
50%
12 Lacertae ν4=5.334357 c/d l=0, ν2=5.066346 c/d l=1
50%
ν ERIDANI
HD 29248 V = 3.92 mag B2III
Aerts C., de Cat P., Handler G., et al., 2004, MNRAS, 347, 463Jerzykiewicz M., Handler G., Shobbrook R. R., et al., 2005, MNRAS 360, 619
ν ERIDANI
HD 29248 V = 3.92 mag B2III
Aerts C., de Cat P., Handler G., et al., 2004, MNRAS, 347, 463Jerzykiewicz M., Handler G., Shobbrook R. R., et al., 2005, MNRAS 360, 619
ν ERIDANI ν1 = 5.7632828 c/d l=0, ν4 = 5.6372470 c/d l=1, ν6 = 6.243847 c/d l=1
ν ERIDANI ν1 = 5.7632828 c/d l=0, ν4 = 5.6372470 c/d l=1, ν6 = 6.243847 c/d l=1
ν ERIDANI ν1 = 5.7632828 c/d l=0, ν4 = 5.6372470 c/d l=1, ν6 = 6.243847 c/d l=1
ν ERIDANI ν1 = 5.7632828 c/d l=0
ν ERIDANI νB=0.61440 c/d, l=2
Summary
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 MsunSpectral type: O8-B6Light amplitudes: 0.01 - 0.3 magnitudesPeriods: 0.1 - 0.6 days (~2 – 15 hours)
β CEPHEI STARS