“银河系消光”的版本间差异
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*[[u,g,r,i,z]] 波段的银河系消光 |
*[[u,g,r,i,z]] 波段的银河系消光 |
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The Galactic extinction in the u band A_u based on the maps of Schlegel et al. (1998, ApJ, 500, 525). For an R_V = 3.1 absorbing medium, the extinctions in the SDSS bands can be expressed as A_x = C_x E(B-V), where x is the filter (ugriz) |
The Galactic extinction in the u band A_u based on the maps of Schlegel et al. (1998, ApJ, 500, 525). For an R_V = 3.1 absorbing medium, the extinctions in the SDSS bands can be expressed as A_x = C_x E(B-V), where x is the filter (ugriz). |
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:values of C_x are 5.155, 3.793, 2.751, 2.086, and 1.479 for ugriz, respectively |
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:A_g, A_r, A_i, and A_z are 0.736, 0.534, 0.405, and 0.287 times A_u. |
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*IDL中的计算程序 |
*IDL中的计算程序 |
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2015年10月20日 (二) 07:46的版本
- u,g,r,i,z 波段的银河系消光
The Galactic extinction in the u band A_u based on the maps of Schlegel et al. (1998, ApJ, 500, 525). For an R_V = 3.1 absorbing medium, the extinctions in the SDSS bands can be expressed as A_x = C_x E(B-V), where x is the filter (ugriz).
- values of C_x are 5.155, 3.793, 2.751, 2.086, and 1.479 for ugriz, respectively
- A_g, A_r, A_i, and A_z are 0.736, 0.534, 0.405, and 0.287 times A_u.
- IDL中的计算程序
idlutils中的dust_sdssfilter
aval = dust_sdssfilter(dust_getval(l, b, map='IX', /interp), source='Galaxy')