Publications of the Astronomical Society of Australia Publications of the Astronomical Society of Australia Society
Publications of the Astronomical Society of Australia
RESEARCH ARTICLE

New Candidate Planetary Nebulae in the IPHAS Survey: the Case of Planetary Nebulae with ISM interaction

Laurence Sabin A F , Albert A. Zijlstra A , Christopher Wareing B , Romano L. M. Corradi C , Antonio Mampaso C , Kerttu Viironen C , Nicholas J. Wright D and Quentin A. Parker E
+ Author Affiliations
- Author Affiliations

A Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK

B Department of Applied Mathematics, University of Leeds, Leeds, LS2 9JT, UK

C Instituto de Astrofisica de Canarias, Tenerife, Spain

D Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, USA

E Macquarie University/Anglo–Australian Observatory, Department of Physics, North Ryde, Sydney, NSW 2190

F Corresponding author. Email: laurence.sabin@manchester.ac.uk

Publications of the Astronomical Society of Australia 27(2) 166-173 https://doi.org/10.1071/AS09046
Submitted: 20 July 2009  Accepted: 8 December 2009   Published: 31 May 2010

Abstract

We present the results of the search for candidate Planetary Nebulae interacting with the interstellar medium (PN–ISM) in the framework of the INT Photometric Hα Survey (IPHAS) and located in the right ascension range 18–20 h. The detection capability of this new Northern survey, in terms of depth and imaging resolution, has allowed us to overcome the detection problem generally associated to the low surface brightness inherent to PNe-ISM. We discuss the detection of 21 IPHAS PN–ISM candidates. Thus, different stages of interaction were observed, implying various morphologies i.e. from the unaffected to totally disrupted shapes. The majority of the sources belong to the so-called WZO2 stage which main characteristic is a brightening of the nebula’s shell in the direction of motion. The new findings are encouraging as they would be a first step into the reduction of the scarcity of observational data and they would provide new insights into the physical processes occurring in the rather evolved PNe.

Keywords: ISM — planetary nebulae: general — surveys


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1 http://www.iphas.org.

2 The sizes here are defined in terms of angular sizes, so the physical correspondence will depend on the distance.

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