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Conference Paper: Abundances and Gradients in M31 – A Chemical Study of Planetary Nebulae in the Substructures

TitleAbundances and Gradients in M31 – A Chemical Study of Planetary Nebulae in the Substructures
Authors
Issue Date2016
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
International Astronomical Union Symposium 323 (IAUS323): Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution, Beijing, China, 10-14 October 2016. In Proceedings of the International Astronomical Union, 2016, v. 12 n. S323, p. 259-263 How to Cite?
AbstractWe present deep optical spectroscopy of seven planetary nebulae (PNe) in the substructures of M31, three in the Northern Spur and four associated with the Giant Stream. The spectra were obtained with the OSIRIS spectrograph on the 10.4 m GTC. The detection of the [O iii] λ4363 auroral line in all PNe of our sample enables reliable abundance determinations. Our targets have low N/O (<0.5) and He/H ratios, indicating that they are probably Type II PNe. The PNe in our sample have rather homogeneous oxygen abundances, with an average value of 8.56±0.10. Based on the abundances as well as the spatial and kinematical information of our targets, we speculate that the Northern Spur and the Giant Stream might have the same origin. We raise a hypothesis that the dwarf satellite M32 might be responsible for these two substructures. New observations have recently been made to assess this hypothesis.
Persistent Identifierhttp://hdl.handle.net/10722/248024
ISSN
2015 SCImago Journal Rankings: 0.105

 

DC FieldValueLanguage
dc.contributor.authorFang, X-
dc.contributor.authorGarcia-Benito, R-
dc.contributor.authorGuerrero, MA-
dc.contributor.authorLiu, XW-
dc.contributor.authorZhang, Y-
dc.contributor.authorYuan, HB-
dc.date.accessioned2017-10-18T08:36:31Z-
dc.date.available2017-10-18T08:36:31Z-
dc.date.issued2016-
dc.identifier.citationInternational Astronomical Union Symposium 323 (IAUS323): Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution, Beijing, China, 10-14 October 2016. In Proceedings of the International Astronomical Union, 2016, v. 12 n. S323, p. 259-263-
dc.identifier.issn1743-9213-
dc.identifier.urihttp://hdl.handle.net/10722/248024-
dc.description.abstractWe present deep optical spectroscopy of seven planetary nebulae (PNe) in the substructures of M31, three in the Northern Spur and four associated with the Giant Stream. The spectra were obtained with the OSIRIS spectrograph on the 10.4 m GTC. The detection of the [O iii] λ4363 auroral line in all PNe of our sample enables reliable abundance determinations. Our targets have low N/O (<0.5) and He/H ratios, indicating that they are probably Type II PNe. The PNe in our sample have rather homogeneous oxygen abundances, with an average value of 8.56±0.10. Based on the abundances as well as the spatial and kinematical information of our targets, we speculate that the Northern Spur and the Giant Stream might have the same origin. We raise a hypothesis that the dwarf satellite M32 might be responsible for these two substructures. New observations have recently been made to assess this hypothesis.-
dc.languageeng-
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU-
dc.relation.ispartofProceedings of the International Astronomical Union-
dc.rightsProceedings of the International Astronomical Union. Copyright 2017 © Cambridge University Press.-
dc.titleAbundances and Gradients in M31 – A Chemical Study of Planetary Nebulae in the Substructures-
dc.typeConference_Paper-
dc.identifier.emailFang, X: fangx@hku.hk-
dc.identifier.emailZhang, Y: zhangy96@hku.hk-
dc.identifier.authorityZhang, Y=rp00841-
dc.identifier.doi10.1017/S1743921317000679-
dc.identifier.hkuros282339-
dc.identifier.volume12-
dc.identifier.issueS323-
dc.identifier.spage259-
dc.identifier.epage263-
dc.publisher.placeUnited Kingdom-

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