The halo of M 105 and its group environment as traced by planetary nebula populations. I. Wide-field photometric survey of planetary nebulae in the Leo I group
Author(s):
Hartke, J.; Arnaboldi, M.; Gerhard, O.; Coccato, L.; Pulsoni, C.; Freeman, K.C.; Merrifield, M.; Cortesi, A.; Kuijken, K.H. (0000-0002-3827-0175)