Stellar library

来自Shiyin's note
Shen讨论 | 贡献2016年5月17日 (二) 03:00的版本 →‎M11-STELIB
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MANGA里面用了11个库,下面的主要是对DAP里面的用的库的注释

M11-STELIB

  • stellar library STELIB by Le Borgne et al. (2003).
  • Usable wavelength range for all ages is 3201.0 - 7900.0 AA!
  • 原始分辨率:0.5 A/pixel, and a FWHM of the resolution element of 3.1 angstroms. Resampled this to 1 A/pixel to reduce the oversampling of the spectra. The resampled spectra are named *_s.fits; the original spectra do not have the _s suffix. When constructing the library to fit the spectra, only the *_s.fits spectra are read.
  • IMF
'.ss' ==> Salpeter IMF
'.kr' ==> Kroupa IMF
'.cha' ==> Chabrier IMF
  • DAP 只用了3个金属丰度,一共85个SSP,

ssp_M11_MILES.ss.z001 (z=0.01)

24 ages, 200 Myr to 15 Gyr,3201.0 - 9296.5 AA 12192 flux point

ssp_M11_MILES.ss.z002 (solar metallicity)

39 ages, 30 Myr to 15 Gyr

ssp_M11_MILES.ss.z004 (z=0.04)

22 ages, 400 Myr to 15 Gyr