2009/06/26 by K. Viironen, R. Greimel, R. L. M. Corradi +17 · 1 citation
Physics and Astronomy · #Artificial intelligence #Astronomy and Astrophysical Research #Astrophysics #Biology #Computer science #Context (archaeology) #Galactic plane #Galaxies: Formation, Evolution, Phenomena #Physics #Planetary nebula #Selection (genetic algorithm) #Stars #Stellar, planetary, and galactic studies #astro-ph.GA
paper · pdf · doi:10.1051/0004-6361/200912002
11 pages, 7 figures
arxiv created 2009/06/26 · openalex publication_date 2009/07/09 · arxiv updated 2015/05/13 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
<i>Context. <i/>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.<i>Aims. <i/>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.<i>Methods. <i/>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.<i>Results. <i/>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.