Start year
1986
End year
2018
Organizational Unit
Organizing institutions
General
Description
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.
Members
Principal investigator
Antonio
Mampaso Recio
Project manager
ROMANO LUIGI MARIA CORRADI
Project staff
ROMANO LUIGI MARIA CORRADI
REBECA GALERA ROSILLO
David
Sánchez Aguado
Collaborators
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
Results
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.
Scientific activity
Related publications
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ETHOS 1: a high-latitude planetary nebula with jets forged by a post-common-envelope binary central starWe report on the discovery of ETHOS 1 (PN G068.1+11.0), the first spectroscopically confirmed planetary nebula (PN) from a survey of the SuperCOSMOS Science Archive for high-latitude PNe. ETHOS 1 stands out as one of the few PNe to have both polar outflows (jets) travelling at 120 ± 10 km s-1 and a close binary central star. The light curveMiszalski, B. et al.
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52011 -
Discovery of close binary central stars in the planetary nebulae NGC 6326 and NGC 6778We present observations proving the close binary nature of the central stars belonging to the planetary nebulae (PNe) NGC 6326 and NGC 6778. Photometric monitoring reveals irradiated lightcurves with orbital periods of 0.372 and 0.1534 days, respectively, constituting firm evidence that they passed through a common-envelope (CE) phase. Unlike mostMiszalski, B. et al.
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72011 -
A Planetary Nebula around Nova V458 Vulpeculae Undergoing Flash IonizationNova V458 Vul erupted on 2007 August 8 and reached a visual magnitude of 8.1 a few days later. Hα images obtained 6 weeks before the outburst as part of the IPHAS Galactic plane survey reveal an 18th magnitude progenitor surrounded by an extended nebula. Subsequent images and spectroscopy of the nebula reveal an inner nebular knot increasingWesson, R. et al.
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112008 -
Non-detection of Magnetic Fields in the Central Stars of the Planetary Nebulae NGC 1360 and LSS 1362The presence of magnetic fields is an attractive hypothesis for shaping planetary nebulae (PNe). We report on observations of the central star of the two PNe NGC 1360 and LSS 1326. We performed spectroscopy on circularly polarized light with the Focal Reducer and Low Dispersion Spectrograph at the Very Large Telescope of the European SouthernLeone, Francesco et al.
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42011 -
The structure of the outer Galactic disc as revealed by IPHAS early A starsThis study is an investigation of the stellar density profile of the Galactic disc in the anticentre direction. We select over 40000 early A stars from INT/WFC Photometric Hα Survey of the Northern Galactic Plane (IPHAS) photometry in the Galactic longitude range 160° l 200° close to the equatorial plane (-1° b +1°). We then compare theirSale, S. E. et al.
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22010 -
The new carbon symbiotic star IPHAS J205836.43+503307.2Aims: We are performing a search for symbiotic stars using IPHAS, the INT Hα survey of the northern Galactic plane, and follow-up observations. Methods: Candidate symbiotic stars are selected on the basis of their IPHAS and near-IR colours, and spectroscopy and photometry are obtained to determine their nature. We present here observations of theCorradi, R. L. M. et al.
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52011 -
The Iron Abundance in Galactic Planetary NebulaeWe constrain the iron abundance in a sample of 33 low-ionization Galactic planetary nebulae (PNe) using [Fe III] lines and correcting for the contribution of higher ionization states with ionization correction factors that take into account uncertainties in the atomic data. We find very low iron abundances in all the objects, suggesting that moreDelgado Inglada, G. et al.
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42009 -
The IPHAS catalogue of Hα emission-line sources in the northern Galactic planeWe present a catalogue of point-source Hα emission-line objects selected from the INT/WFC Photometric Hα Survey (IPHAS) of the northern Galactic plane. The catalogue covers the magnitude range 13 13) emission-line objects than were previously known in the Milky Way.Witham, A. R. et al.
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32008 -
New young planetary nebulae in IPHASAims: We search for very small-diameter galactic planetary nebulae (PNe) representing the earliest phases of PN evolution. The IPHAS catalogue of Hα-emitting stars provides a useful basis for this study since all sources present in this catalogue must be of small angular diameter. Methods: The PN candidates are selected based on their location inViironen, K. et al.
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72009 -
Low-ionization pairs of knots in planetary nebulae: physical properties and excitationWe obtained optical long-slit spectra of four planetary nebulae (PNe) with low-ionization pair of knots, namely He 1-1, IC 2149, KjPn 8 and NGC 7662. These data allow us to derive the physical parameters and excitation of the pairs of knots, and those of higher ionization inner components of the nebulae, separately. Our results are as follows. (1)Gonçalves, D. R. et al.
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102009 -
IPHAS extinction distances to planetary nebulaeAims: The determination of reliable distances to planetary nebulae (PNe) is a major difficulty in the study of this class of objects in the Galaxy. The availability of new photometric surveys such as IPHAS (the INT/WFC photometric Hα survey of the northern Galactic plane) covering large portions of the sky provide an opportunity to apply the soGiammanco, C. et al.
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12011 -
IPHAS and the symbiotic stars. I. Selection method and first discoveriesContext: 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 GalacticCorradi, R. L. M. et al.
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32008 -
IPHAS and the symbiotic stars . II. New discoveries and a sample of the most common mimicsContext. Knowledge of the total population of symbiotic stars in the Galaxy is important for understanding basic aspects of stellar evolution in interacting binaries and the relevance of this class of objects in the formation of supernovae of type Ia. Aims: In a previous paper, we presented the selection criteria needed to search for symbioticCorradi, R. L. M. et al.
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12010 -
Initial data release from the INT Photometric Hα Survey of the Northern Galactic Plane (IPHAS)The INT/WFC Photometric Hα Survey of the Northern Galactic Plane (IPHAS) is an imaging survey being carried out in Hα, r' and i' filters, with the Wide Field Camera (WFC) on the 2.5-m Isaac Newton Telescope (INT) to a depth of r' = 20 (10σ). The survey is aimed at revealing the large scale organization of the Milky Way and can be applied toGonzález-Solares, E. A. et al.
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72008 -
High spatial resolution Galactic 3D extinction mapping with IPHASWe present an algorithm (MEAD, for `Mapping Extinction Against Distance') which will determine intrinsic (r' - i') colour, extinction, and distance for early-A to K4 stars extracted from the IPHAS r'/i'/Hα photometric data base. These data can be binned up to map extinction in three dimensions across the northern Galactic plane. The large size ofSale, Stuart E. et al.
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12009 -
Hen 2-104: a close-up look at the Southern CrabAims: The kinematics, shaping, density distribution, expansion distance, and ionized mass of the nebula Hen 2-104, and the nature of its symbiotic Mira are investigated. Methods: A combination of multi-epoch HST images and VLT integral field high-resolution spectroscopy is used to study the nebular dynamics both along the line of sight and in theSantander-García, M. et al.
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72008 -
Extremely red stellar objects revealed by IPHASWe present photometric analysis and follow-up spectroscopy for a population of extremely red stellar objects extracted from the point-source catalogue of the Isaac Newton Telescope (INT) Photometric Hα Survey (IPHAS) of the northern Galactic plane. The vast majority of these objects have no previous identification. Analysis of optical, near- andWright, N. J. et al.
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112008 -
Candidate planetary nebulae in the IPHAS photometric catalogueContext: 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 theViironen, K. et al.
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92009 -
Automatic spectral classification of stellar spectra with low signal-to-noise ratio using artificial neural networksContext. As part of a project aimed at deriving extinction-distances for thirty-five planetary nebulae, spectra of a few thousand stars were analyzed to determine their spectral type and luminosity class. Aims: We present here the automatic spectral classification process used to classify stellar spectra. This system can be used to classify anyNavarro, S. G. et al.
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22012 -
A new planetary nebula in the outer reaches of the GalaxyAims: 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 anticentreViironen, K. et al.
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62011
