Planetary nebula candidates in a southern region of M 33^*

¹ Instituto de Astrofísica de Canarias, c/Vía Lactea s/n, 38205 La Laguna, Spain e-mail: ahd@ll.iac.es
² Departamento de Astrofísica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez, s/n, 38071 La Laguna, Spain

Corresponding author: L. J. Corral, lcorral@ll.iac.es

Received: 24 August 2000
Accepted: 11 July 2001

Abstract

In a search for emission line objects made in a southern region of M 33 using narrow band filters centered on [O III], Hα and adjacent continua, we detect some known and new objects that can be classified as planetary nebulae candidates (PNc). This search, the deepest one made up to now in M 33, has allowed us to detect 48 PNc, from which 14 have a ratio of [O III]-to-Hα fluxes greater than 1. We compare our findings with a previous search and present the list and finding charts of these interesting objects.