SFH

• 恒星形成历史

• 根据SFH，生成光谱的工具[1]

recover SFH

• STECKMAP　　[2]
• pPXF [3]

测光数据

• starpy http://arxiv.org/abs/1609.00023

a python code, derive the quenching SFH of a galaxy through a Bayesian MCMC method [4]

usingthe observed u-r and NUV-u colours, a redshift, BC03, solar metallicity , Chabrier IMF, no intrinsic dust

SFH is modelled as an exponential decline of the SFR described by two parameters [tq; tau], where tq is the time quench begins