  CONTEXT: Extragalactic globular clusters have been studied in elliptical
galaxies and in a few luminous spiral galaxies, but little is known about
globular clusters in low-luminosity spirals.
  AIMS: Past observations with the ACS have shown that NGC 45 hosts a large
population of globular clusters (19), as well as several young star clusters.
In this work we aim to confirm the bona fide globular cluster status for 8 of
19 globular cluster candidates and to derive metallicities, ages, and
velocities.
  METHODS: VLT/FORS2 multislit spectroscopy in combination with the Lick/IDS
system was used to derive velocities and to constrain metallicities and
[alpha/Fe] element ratio of the globular clusters.
  RESULTS: We confirm the 8 globular clusters as bona fide globular clusters.
Their velocities indicate halo or bulge-like kinematics, with little or no
overall rotation. From absorption indices such as H_beta, H_gamma, and H_delta
and the combined [MgFe]' index, we found that the globular clusters are
metal-poor [Z/H]<=-0.33 dex and [alpha/Fe]<=0.0 element ratio. These results
argue in favor of a population of globular clusters formed during the
assembling of the galaxy.
