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Article: Towards a new distance scale and luminosity function for nearby planetary nebulae
Title | Towards a new distance scale and luminosity function for nearby planetary nebulae |
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Authors | |
Keywords | Stars: distances (ISM:) planetary nebulae: general |
Issue Date | 2006 |
Citation | Proceedings of the International Astronomical Union, 2006, v. 2, n. 234, p. 49-52 How to Cite? |
Abstract | The local planetary nebula (PN) census is dominated by extremely evolved, examples, and until recently, was incomplete. New discoveries from the AAO/UKST Hα Survey and SHASSA, have partially remedied this problem. In addition, we find that some currently accepted nearby PNe are in fact Strömgren spheres in the ISM ionised by a hot white dwarf. Distance estimates for a robust sample of calibrating PNe from the literature, plus new distances for a number of highly evolved PNe, have allowed a new Ha surface brightness - radius relationship to be devised as a useful distance indicator. It covers >6 dex in SB, and while the spread in SB is ∼1 dex at a given radius, optically thick (mainly bipolar and bipolar-core) PNe tend to populate the upper bound of the trend, while common-envelope PNe and very high-excitation PNe form a sharp lower boundary. Hence, distances can be estimated for all remaining local PNe, allowing the definition of a relatively complete census of PNe in the solar neighbourhood within 1.0 kpc. This provides a first look at the faint end of the PN luminosity function, and new estimates of the space density, scale height, total number, and birth rate of Galactic PNe. © 2006 International Astronomical Union. |
Persistent Identifier | http://hdl.handle.net/10722/208869 |
ISSN | 2023 SCImago Journal Rankings: 0.121 |
DC Field | Value | Language |
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dc.contributor.author | Frew, David J. | - |
dc.contributor.author | Parker, Quentin A. | - |
dc.date.accessioned | 2015-03-23T02:02:00Z | - |
dc.date.available | 2015-03-23T02:02:00Z | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | Proceedings of the International Astronomical Union, 2006, v. 2, n. 234, p. 49-52 | - |
dc.identifier.issn | 1743-9213 | - |
dc.identifier.uri | http://hdl.handle.net/10722/208869 | - |
dc.description.abstract | The local planetary nebula (PN) census is dominated by extremely evolved, examples, and until recently, was incomplete. New discoveries from the AAO/UKST Hα Survey and SHASSA, have partially remedied this problem. In addition, we find that some currently accepted nearby PNe are in fact Strömgren spheres in the ISM ionised by a hot white dwarf. Distance estimates for a robust sample of calibrating PNe from the literature, plus new distances for a number of highly evolved PNe, have allowed a new Ha surface brightness - radius relationship to be devised as a useful distance indicator. It covers >6 dex in SB, and while the spread in SB is ∼1 dex at a given radius, optically thick (mainly bipolar and bipolar-core) PNe tend to populate the upper bound of the trend, while common-envelope PNe and very high-excitation PNe form a sharp lower boundary. Hence, distances can be estimated for all remaining local PNe, allowing the definition of a relatively complete census of PNe in the solar neighbourhood within 1.0 kpc. This provides a first look at the faint end of the PN luminosity function, and new estimates of the space density, scale height, total number, and birth rate of Galactic PNe. © 2006 International Astronomical Union. | - |
dc.language | eng | - |
dc.relation.ispartof | Proceedings of the International Astronomical Union | - |
dc.subject | Stars: distances | - |
dc.subject | (ISM:) planetary nebulae: general | - |
dc.title | Towards a new distance scale and luminosity function for nearby planetary nebulae | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1017/S1743921306002742 | - |
dc.identifier.scopus | eid_2-s2.0-33845533613 | - |
dc.identifier.volume | 2 | - |
dc.identifier.issue | 234 | - |
dc.identifier.spage | 49 | - |
dc.identifier.epage | 52 | - |
dc.identifier.eissn | 1743-9221 | - |
dc.identifier.issnl | 1743-9213 | - |