A new planetary nebula in the outer reaches of the Galaxy

K. Viironen; A. Mampaso; R. L M Corradi; J. E. Drew; D. J. Frew; C. Giammanco; R. Greimel; T. Liimets; J. E. Lindberg; M. Rodríguez; L. Sabin; S. E. Sale; P. A. Wilson; A. Zijlstra

doi:10.1051/0004-6361/201014897

A new planetary nebula in the outer reaches of the Galaxy

K. Viironen^*, A. Mampaso, R. L M Corradi, J. E. Drew, D. J. Frew, C. Giammanco, R. Greimel, T. Liimets, J. E. Lindberg, M. Rodríguez, L. Sabin, S. E. Sale, P. A. Wilson, A. Zijlstra

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Aims. A proper determination of the abundance gradient in the Milky Way requires the observation of objects at large galactiocentric distances. With this aim, we are exploring the planetary nebula population towards the Galactic anticentre. In this article, the discovery and physico-chemical study of a new planetary nebula towards the anticentre direction, IPHASX J052531.19+281945.1 (PNG 178.1-04.0), is presented. Methods. The planetary nebula was discovered from the IPHAS survey. Long-slit follow-up spectroscopy was carried out to confirm its planetary nebula nature and to calculate its physical and chemical characteristics. Results. The newly discovered planetary nebula turned out to be located at a very large galactocentric distance (D_GC = 20.8 ± 3.8 kpc), larger than any previously known planetary nebula with measured abundances. Its relatively high oxygen abundance (12+log(O/H) = 8.36± 0.03) supports a flattening of the Galactic abundance gradient at large galactocentric distances rather than a linearly decreasing gradient.

Original language	English
Article number	A107
Pages (from-to)	1-7
Number of pages	7
Journal	Astronomy and Astrophysics
Volume	530
DOIs	https://doi.org/10.1051/0004-6361/201014897
Publication status	Published - 2011

Keywords

Galaxy: abundances

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10.1051/0004-6361/201014897

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title = "A new planetary nebula in the outer reaches of the Galaxy",

abstract = "Aims. A proper determination of the abundance gradient in the Milky Way requires the observation of objects at large galactiocentric distances. With this aim, we are exploring the planetary nebula population towards the Galactic anticentre. In this article, the discovery and physico-chemical study of a new planetary nebula towards the anticentre direction, IPHASX J052531.19+281945.1 (PNG 178.1-04.0), is presented. Methods. The planetary nebula was discovered from the IPHAS survey. Long-slit follow-up spectroscopy was carried out to confirm its planetary nebula nature and to calculate its physical and chemical characteristics. Results. The newly discovered planetary nebula turned out to be located at a very large galactocentric distance (DGC = 20.8 ± 3.8 kpc), larger than any previously known planetary nebula with measured abundances. Its relatively high oxygen abundance (12+log(O/H) = 8.36± 0.03) supports a flattening of the Galactic abundance gradient at large galactocentric distances rather than a linearly decreasing gradient.",

keywords = "Galaxy: abundances",

author = "K. Viironen and A. Mampaso and Corradi, {R. L M} and Drew, {J. E.} and Frew, {D. J.} and C. Giammanco and R. Greimel and T. Liimets and Lindberg, {J. E.} and M. Rodr{\'i}guez and L. Sabin and Sale, {S. E.} and Wilson, {P. A.} and A. Zijlstra",

year = "2011",

doi = "10.1051/0004-6361/201014897",

language = "English",

volume = "530",

pages = "1--7",

journal = "Astronomy and Astrophysics",

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T1 - A new planetary nebula in the outer reaches of the Galaxy

AU - Viironen, K.

AU - Mampaso, A.

AU - Corradi, R. L M

AU - Drew, J. E.

AU - Frew, D. J.

AU - Giammanco, C.

AU - Greimel, R.

AU - Liimets, T.

AU - Lindberg, J. E.

AU - Rodríguez, M.

AU - Sabin, L.

AU - Sale, S. E.

AU - Wilson, P. A.

AU - Zijlstra, A.

PY - 2011

Y1 - 2011

N2 - Aims. A proper determination of the abundance gradient in the Milky Way requires the observation of objects at large galactiocentric distances. With this aim, we are exploring the planetary nebula population towards the Galactic anticentre. In this article, the discovery and physico-chemical study of a new planetary nebula towards the anticentre direction, IPHASX J052531.19+281945.1 (PNG 178.1-04.0), is presented. Methods. The planetary nebula was discovered from the IPHAS survey. Long-slit follow-up spectroscopy was carried out to confirm its planetary nebula nature and to calculate its physical and chemical characteristics. Results. The newly discovered planetary nebula turned out to be located at a very large galactocentric distance (DGC = 20.8 ± 3.8 kpc), larger than any previously known planetary nebula with measured abundances. Its relatively high oxygen abundance (12+log(O/H) = 8.36± 0.03) supports a flattening of the Galactic abundance gradient at large galactocentric distances rather than a linearly decreasing gradient.

AB - Aims. A proper determination of the abundance gradient in the Milky Way requires the observation of objects at large galactiocentric distances. With this aim, we are exploring the planetary nebula population towards the Galactic anticentre. In this article, the discovery and physico-chemical study of a new planetary nebula towards the anticentre direction, IPHASX J052531.19+281945.1 (PNG 178.1-04.0), is presented. Methods. The planetary nebula was discovered from the IPHAS survey. Long-slit follow-up spectroscopy was carried out to confirm its planetary nebula nature and to calculate its physical and chemical characteristics. Results. The newly discovered planetary nebula turned out to be located at a very large galactocentric distance (DGC = 20.8 ± 3.8 kpc), larger than any previously known planetary nebula with measured abundances. Its relatively high oxygen abundance (12+log(O/H) = 8.36± 0.03) supports a flattening of the Galactic abundance gradient at large galactocentric distances rather than a linearly decreasing gradient.

KW - Galaxy: abundances

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JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A107

ER -

A new planetary nebula in the outer reaches of the Galaxy

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