Transcription of 恒星分光学の基礎 - NAO
1 2011 12 26-28 : ( ) .. S/N R / 10 102-103 Be 104-105 2 HIDES GAOES 1 IRAF IRAF.
2 Image Reduction and Analysis Software NOAO S j/ k dt = kds I(0)= jexp(-t)ds = (j/k)exp(-t)kds = Sexp(-t)dt ( S=j/k) I(0) S(t 1) S 1 S I(0) S(t 1) LT E S B( ,T) T ni ni - T P ()kTNPkmhCkTITCUUNNNkTEUgNneeeeiii= = = ++2/332/311122 expexp T P T( ) P( ) (SED, ,etc.)
3 T( ) (SED, ,etc.) ,.. Holweger & Mueller (1974) LT E Vernazza et al. (1981) N LT E Harvard-Smithsonian Reference Atmosphere --- --- LT E LT E ni T P or I z I(z, ) dP/d =g/ (J-B)d =0 Frad= = Teff4 F=Frad+Fconv= = Teff4 dI/d = I-B T( ) SED: Spectral Energy Distribution Kurucz AT L A S Bell et al. MARCS Allard et al. PHOENIX Kurucz SED interpolation SED 2000 5000 8000 --- --- l( )= l0 ( ) l0 (n) ( ) (gf) n T P ( ) T P T P ( )
4 Kurucz WIDTH Sneden MOOG 4 Teff log g [Fe/H]( ) (1) dominant / (2) (l/k) A T LT E Rmax=1-B( ,T( 0))/B( ,T( 1)) B T N LT E R( ) l( ) W (= Hx/Hc)ABCEFGHD024-101l og 0l og ( W/ D)ABCDEFGH (1) LTE (2) (3) (4) (5) (6) LT E non-LT E LT E non-LT E Non-LT E Ca II K [ ] n Scur Scur Jcur= (Scur) Jcur n N LT E cos dI/dz = -( + ) (I-S) cos I/ r - (sin /r) I/ = - (I-S)
5 D R d/R 10% R Teff-2L1/2 d g-1 g M R-2 Teff4ML-1 d/R RM-1 Teff-2L1/2M-1 HR Teff-L d/R M-1 d R Post-AGB F Ca H+K MgII h+k X He10830 T <10-3 LT E MgII h+k He10830 108261083010834BD +44 493 ([ Fe/H] = ) I I av el engt h ( )Normal i zed i ntensi [ Fe/ H ]l og EWt hi s st udy (m )Peterson & Schrijver (1997) Cen Fe/H] = + HD184499 [Fe/H] = HD19445 [Fe/H] = Takeda & Takada-Hidai (2011) non-local --- He Li interlocking ?
6 --- Eion(He I)- Ei (He I 2s 3S)= (eV) 2600 HeI 10830 2s 3S <2600 [ exp(-h /kT) ] Li I 2300 edge ( ) Li N LT E Li He I Li I / W R( ) l( ) W W Fe I Ti I (1) --- h --- h (2) 5678910012l og gf + c onstl og W / + c onst.
7 Fe I = 0, 1, 2 km/s 01234D rei l i ng & B el l (1980)Sadakane & N i shi mura (1981)L ane & L est er ( 1984) [ Fe I ]L ane & L est er ( 1984) [ Fe I I ]L ane & L ester (1984) [ Ti I I ]Savanov & K hal i l ov (1985)Gi gas (1986)A del man & Gul l i ver (1990) [ Fe I ]A del man & Gul l i ver (1990) [ Fe I I ]H i l l & L andstreet (1993)Qi u et al . (2001)Saf f e & L evato (2004) [ Fe I ]Saf f e & L evato (2004) [ Fe I I ]Saf f e & L evato (2004) [ Ti I I ]Saf f e & L evato (2004) [ Cr I I ] (km s-1) (m )l og (WGD/Wcl)F e IF e I II 4951W av el engt h ( )Normalized I 5133cl assi cal mo delgravi t y darkeni ng modelNormalized flux Fconv l l Fconv Frad(=Ftot-Fconv)
8 Fconv overshooting Kurucz AT L A S overshooting W Fconv overshooting overshooting -4-20240006000800010000l og 5000W = 1 (w ith overshooting)W = 0 (no overshooting)T (K)K ur ucz' s sol ar at mospher i c model w i t h/ w i t hout over shoot i ng 1D 2D/3D Asplund et al. (2000) Stein & Nordlund (1998) Asplund et al.
9 (2000) fudge parameter large eddy simulation approach Asplund Stein+Nordlund CO5 BOLD (Freytag, Steffen, ..) COnservative COde for the COmputation of COmpressible COnvection in a BOx of L Dimensions with l=2,3' LT E non-LT E / 3D 3D 3D 3D 3D non-LT E.
10 Gray (1988)
