Candidate planetary nebulae in the IPHAS photometric catalogue

Viironen, K.; Greimel, R.; Corradi, R. L. M.; Mampaso, A.; Rodríguez, M.; Sabin, L.; Delgado-Inglada, G.; Drew, J. E.; Giammanco, C.; González-Solares, E. A.; Irwin, M. J.; Miszalski, B.; Parker, Q. A.; Rodríguez-Flores, E. R.; Zijlstra, A.
Referencia bibliográfica

Astronomy and Astrophysics, Volume 504, Issue 1, 2009, pp.291-301

Fecha de publicación:
9
2009
Número de autores
15
Número de autores del IAC
5
Número de citas
66
Número de citas referidas
56
Descripción
Context: We have carried out a semi-automated search for planetary nebulae (PNe) in the INT photometric H-alpha survey (IPHAS) catalogue. We present the PN search and the list of selected candidates. We cross correlate the selected candidates with a number of existing infrared galactic surveys in order to gain further insight into the nature of the candidates. Spectroscopy of a subset of objects is used to estimate the number of PNe present in the entire candidate list. Aims: The overall aim of the IPHAS PN project is to carry out a deep census of PNe in the northern Galactic plane, an area where PN detections are clearly lacking. Methods: The PN search is carried out on the IPHAS photometric catalogue. The candidate selection is based on the IPHAS and 2MASS/UKIDSS colours of the objects and the final candidate selection is made visually. Results: From the original list of ~600 million IPHAS detections we have selected a total of 1005 objects. Of these, 224 are known objects, leaving us with 781 PN candidates. Based on the initial follow-up spectroscopy, we expect the list to include very young and proto-PNe in addition to genuine, normal PNe (~16%) and emission line objects other than PNe. We present additional criteria to select the most probable PN candidates from our candidate list. Table 1 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/504/291
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