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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The planetary nebula IPHASXJ211420.0+434136 (Ou5): Insights into common-envelope dynamical and chemical evolution
Monthly Notices of the Royal Astronomical Society, Volume 441, No. 4, Year 2014
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Description
While analysing the images of the IPHAS (INT/WFC Photometric Hα Survey of the northern Galactic plane) survey, we noticed that the central star of the candidate planetary nebula IPHASXJ211420.0+434136 (also named Ou5) was clearly variable. This is generally considered as an indication of binarity. To confirm it, we performed a photometric monitoring of the central star, and obtained images and spectra of the nebula. The nebular spectrum confirms that IPHASXJ211420.0+434136 is a planetary nebula of moderately high excitation. It has a remarkable morphology with two nested pairs of bipolar lobes and other unusual features. The light curve of the central star reveals that it is an eclipsing binary system with an orbital period of 8.74 h. It also displays a strong irradiation effect with an amplitude of 1.5mag. The presence of multiple bipolar outflows adds constraints to the formation of these nebulae, suggesting the occurrence of discrete ejection events during, or immediately before, the common-envelope phase. IPHASXJ211420.0+434136 also adds evidence to the hypothesis that a significant fraction of planetary nebulae with close binary central stars have a peculiar nebular chemistry and a relatively low nebular mass. This may point to low-mass, low-metallicity progenitors, with additional effects related to the binary evolution. We also suggest that these objects may be relevant to understand the abundance discrepancy problem in planetary nebulae. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Corradi, Romano L.M.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Rodríguez-Gil, Pablo
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Jones, David
Chile, Santiago
European Southern Observatory Santiago
Chile, Copiapo
Universidad de Atacama
García-Rojas, Jorge
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Mampaso, Antonio
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
García-Alvarez, D.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Spain, Brena Baja
Grantecan
Pursimo, Tapio
Spain, Brena Baja
Nordic Optical Telescope
Eenmäe, T.
Estonia, Tartu
Tartu Observatoorium
Estonia, Tartu
Tartu Ülikooli Füüsika Instituut
Liimets, Tiina
Estonia, Tartu
Tartu Observatoorium
Estonia, Tartu
Tartu Ülikooli Füüsika Instituut
Miszalski, Brent
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Observatory
Southern African Large Telescope Foundation
Statistics
Citations: 21
Authors: 10
Affiliations: 10
Identifiers
Doi:
10.1093/mnras/stu703
ISSN:
00358711
e-ISSN:
13652966
Research Areas
Mental Health
Study Design
Cross Sectional Study
Study Approach
Quantitative