Star Formation-dominated Eigenvector 1 as a Clock of AGN

The well-documented Eigenvector 1 space is first extended to infrared color alpha(60,25) by analyzing a sample of IRAS-selected Seyfert 1.5 galaxies. Our Eigenvector 1, dominated by alpha(60,25), can be interpreted as an evolutionary track of AGN. By analyzing the AGN properties and star formation history of the post-starburst AGN SDSS J085338.27+033246.1, we discuss a possible evolutionary path linking AGN and star formation.