Abstract
We here present the ages of four compact stellar clusters (CSCs) in the nearby spiral galaxy M81, using long-slit optical spectra obtained with the 10.4 m Gran Telescopio Canarias (GTC). All the four CSCs, including the brightest in this galaxy, are found to have ages between 5-6 Myr, with one of them showing Wolf-Rayet spectral features. The photometric masses of these clusters, calculated using their spectroscopically-derived ages, lie between 3000-18000 M_⊙. The observed clusters are among the brightest objects, and hence the most massive, in the entire disk of M81. This implies the absence of massive (10^5 M_⊙) compact stellar clusters in M81.
