Bipolar Nebulae


This project has three major objectives: 1) To determine the physico-chemical characteristics of bipolar planetary nebulae and symbiotic nebulae, to help understanding the origin of bipolarity and to test theoretical models, mainly models with binary central stars, aimed at explaining the observed morphology and kinematics. 2) To study the low-ionization microstructures in planetary nebulae, their origin (in the context of the main shell formation), their physico-chemical characteristics, and their interaction with the nebular gas. 3) To discover and study galactic and extragalactic planetary nebulae, analyzing their physico-chemical properties and the metallicity gradients along the galactic discs.

Principal investigator
Project manager
Project staff
J. Drew - University of Hertfordshire
R. Greimel - University of Graz- Institute of Physics
M. Santander García - Observatorio Astronomico Nacional Madrid
D.R. Gonçalves - Observatorio do Valongo
U. Munari - Istituto Nazionale di Astrofisica
L. Sabin - Universidad Nacional Autónoma de México
T. Liimets - Tartu Observatoorium
B. Balick - University of Washington
L. Magrini - Università di Firenze
R. Wesson - European Southern Observatory
Henri Boffin - European Southern Observatory
T. Hillwig - Valparaiso University
B. Miszalski - Southern African Large Telescope

Miszalski, B and collaborators (2016, MNRAS, 456, 633) re-discovered a dwarf nova system, an eruption of which was first observed by ancient Chinese astronomers in the year 483 CE. Hillwig, T and collaborators (2016, ApJ, 832, 125) demonstrated that the symmetry axes of planetary nebulae with binary central stars always lie perpendicular to the orbital plane of the central binaries. The probability of encountering such a tight correlation by chance is less than a million to one.

Publications related

  • Spatially resolved physical and chemical properties of the planetary nebula NGC 3242

    Aims: Optical integral-field spectroscopy was used to investigate the planetary nebula NGC 3242. We analysed the main morphological components of this source, including its knots, but not the halo. In addition to revealing the properties of the physical and chemical nature of this nebula, we also provide reliable spatially resolved constraints that

    Corradi, R. L. M. et al.

    Advertised on:

  • Candidate planetary nebulae in the IPHAS photometric catalogue

    Context: We have carried out a semi-automated search for planetary nebulae (PNe) in the INT photometric H-alpha survey (IPHAS) catalogue. We present the PN search and the list of selected candidates. We cross correlate the selected candidates with a number of existing infrared galactic surveys in order to gain further insight into the nature of the

    Viironen, K. et al.

    Advertised on:

  • IPHAS and the symbiotic stars. I. Selection method and first discoveries

    Context: The study of symbiotic stars is essential to understand important aspects of stellar evolution in interacting binaries. Their observed population in the Galaxy is however poorly known, and is one to three orders of magnitudes smaller than the predicted population size. Aims: IPHAS, the INT Photometric Hα survey of the Northern Galactic

    Corradi, R. L. M. et al.

    Advertised on:


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