PFP 1: A large planetary nebula caught in the first stages of ISM interaction

Mark J. Pierce; David J. Frew; Quentin A. Parker; Joachim Köppen

doi:10.1071/AS04039

PFP 1

A large planetary nebula caught in the first stages of ISM interaction

Mark J. Pierce^*, David J. Frew, Quentin A. Parker, Joachim Köppen

^*Corresponding author for this work

Research output: Contribution to journal › Article

37 Citations (Scopus)

Abstract

This paper presents (Hα + [NII]) imaging and spectroscopy of a previously unknown, highly evolved planetary nebula of low excitation which is in the first stages of an interaction with the interstellar medium (ISM). It was discovered serendipitously from AAO/UKST Hα Survey images as part of a project to exploit the survey data and has evaded detection by previous surveys due to its very low surface brightness. It is a remarkable hollow-sphere planetary nebula, some 19́ across, making it one of the largest examples of its type. We estimate a radius of 1.5 pc and a distance of 550 pc as derived from a new Hα surface brightness-radius relation. PFP 1 has near-perfect circular symmetry, broken only at the north-western edge which is coupled with significantly increased (Hα + [NII]) intensity, both of which provide evidence for an interaction with the ISM. We find a near solar composition for this object with possibly enhanced He and N abundances. A blue central star candidate has been identified from the SuperCosmos Sky Survey data.

Original language	English
Pages (from-to)	334-343
Number of pages	10
Journal	Publications of the Astronomical Society of Australia
Volume	21
Issue number	3
DOIs	https://doi.org/10.1071/AS04039
Publication status	Published - 2004

Keywords

ISM: abundances
Planetary nebulae: general
Planetary nebulae: individual (PFP 1)
Techniques: photometric
Techniques: spectroscopic

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10.1071/AS04039

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title = "PFP 1: A large planetary nebula caught in the first stages of ISM interaction",

abstract = "This paper presents (Hα + [NII]) imaging and spectroscopy of a previously unknown, highly evolved planetary nebula of low excitation which is in the first stages of an interaction with the interstellar medium (ISM). It was discovered serendipitously from AAO/UKST Hα Survey images as part of a project to exploit the survey data and has evaded detection by previous surveys due to its very low surface brightness. It is a remarkable hollow-sphere planetary nebula, some 19́ across, making it one of the largest examples of its type. We estimate a radius of 1.5 pc and a distance of 550 pc as derived from a new Hα surface brightness-radius relation. PFP 1 has near-perfect circular symmetry, broken only at the north-western edge which is coupled with significantly increased (Hα + [NII]) intensity, both of which provide evidence for an interaction with the ISM. We find a near solar composition for this object with possibly enhanced He and N abundances. A blue central star candidate has been identified from the SuperCosmos Sky Survey data.",

keywords = "ISM: abundances, Planetary nebulae: general, Planetary nebulae: individual (PFP 1), Techniques: photometric, Techniques: spectroscopic",

author = "Pierce, {Mark J.} and Frew, {David J.} and Parker, {Quentin A.} and Joachim K{\"o}ppen",

year = "2004",

doi = "10.1071/AS04039",

language = "English",

volume = "21",

pages = "334--343",

journal = "Publications of the Astronomical Society of Australia",

issn = "1448-6083",

publisher = "CSIRO Publishing",

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T2 - A large planetary nebula caught in the first stages of ISM interaction

AU - Pierce, Mark J.

AU - Frew, David J.

AU - Parker, Quentin A.

AU - Köppen, Joachim

PY - 2004

Y1 - 2004

N2 - This paper presents (Hα + [NII]) imaging and spectroscopy of a previously unknown, highly evolved planetary nebula of low excitation which is in the first stages of an interaction with the interstellar medium (ISM). It was discovered serendipitously from AAO/UKST Hα Survey images as part of a project to exploit the survey data and has evaded detection by previous surveys due to its very low surface brightness. It is a remarkable hollow-sphere planetary nebula, some 19́ across, making it one of the largest examples of its type. We estimate a radius of 1.5 pc and a distance of 550 pc as derived from a new Hα surface brightness-radius relation. PFP 1 has near-perfect circular symmetry, broken only at the north-western edge which is coupled with significantly increased (Hα + [NII]) intensity, both of which provide evidence for an interaction with the ISM. We find a near solar composition for this object with possibly enhanced He and N abundances. A blue central star candidate has been identified from the SuperCosmos Sky Survey data.

AB - This paper presents (Hα + [NII]) imaging and spectroscopy of a previously unknown, highly evolved planetary nebula of low excitation which is in the first stages of an interaction with the interstellar medium (ISM). It was discovered serendipitously from AAO/UKST Hα Survey images as part of a project to exploit the survey data and has evaded detection by previous surveys due to its very low surface brightness. It is a remarkable hollow-sphere planetary nebula, some 19́ across, making it one of the largest examples of its type. We estimate a radius of 1.5 pc and a distance of 550 pc as derived from a new Hα surface brightness-radius relation. PFP 1 has near-perfect circular symmetry, broken only at the north-western edge which is coupled with significantly increased (Hα + [NII]) intensity, both of which provide evidence for an interaction with the ISM. We find a near solar composition for this object with possibly enhanced He and N abundances. A blue central star candidate has been identified from the SuperCosmos Sky Survey data.

KW - ISM: abundances

KW - Planetary nebulae: general

KW - Planetary nebulae: individual (PFP 1)

KW - Techniques: photometric

KW - Techniques: spectroscopic

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DO - 10.1071/AS04039

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VL - 21

SP - 334

EP - 343

JO - Publications of the Astronomical Society of Australia

JF - Publications of the Astronomical Society of Australia

SN - 1448-6083

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