  The effects of metallicity on the evolution of protoplanetary disks may be
studied in the outer Galaxy where the metallicity is lower than in the solar
neighbourhood. We present the VLT/KMOS integral field spectroscopy in the
near-infrared of $\sim$120 candidate young stellar objects (YSOs) in the
CMa-$\ell$224 star-forming region located at a Galactocentric distance of 9.1
kpc. We characterise the YSO accretion luminosities and accretion rates using
the hydrogen Br$\gamma$ emission and find the median accretion luminosity of
$\log{(L_{\rm acc})} = -0.82^{+0.80}_{-0.82} L_\odot$. Based on the measured
accretion luminosities, we investigate the hypothesis of star formation history
in the CMa-$\ell$224. Their median values suggest that Cluster C, where most of
YSO candidates have been identified, might be the most evolved part of the
region. The accretion luminosities are similar to those observed toward
low-mass YSOs in the Perseus and Orion molecular clouds, and do not reveal the
impact of lower metallicity. Similar studies in other outer Galaxy clouds
covering a wide range of metallicities are critical to gain a complete picture
of star formation in the Galaxy.
