Astrophysical: Planetary nebulae

  • Publication
    Planetary nebulae in the dwarf galaxy NGC 6822: Detection of new candidates
    We have discovered 13 new candidate Planetary Nebulae (PNe) in the dwarf irregular galaxy NGC 6822, increasing its total number to 17 objects. Our sample of...
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    Planetary nebulae seen with TESS: Discovery of new binary central star candidates from Cycle 1
    Context. It has become clear in recent years that binarity plays a crucial role in many aspects of planetary nebulae (PNe), particularly with regard to the...
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    Planetary nebulae seen with TESS: New and revisited short-period binary central star candidates from Cycles 1 to 4
    Context. High-precision and high-cadence photometric surveys such as Kepler or TESS are making huge progress not only in the detection of new extrasolar planets...
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    Planetary nebulae: the universal mass-metallicity relation for Local Group dwarf galaxies and the chemistry of NGC 205
    Here we study 16 planetary nebulae (PNe) in the dwarf irregular galaxy NGC 205 by using Gemini Multi-Object Spectrographs (GMOS@Gemini) spectra to derive their...
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    PN G000.2+06.1 and PN G002.3+02.2: Two New Type I Planetary Nebulae in the Galactic Bulge
    We confirm the planetary nebula nature of two sources: PN G000.2+06.1 and PN G002.3+02.2, previously identified by Terzan in a photometric survey toward the...
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    PN G135.9+55.9: a New, Extremely Oxygen-Poor Planetary Nebula in the Galactic Halo
    We show that SBS1150+599A is most probably a planetary nebula located in the Galactic halo (becoming PN G135.9+55.9). Our photoionization models indicate that...
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    pPNe: Lobe-Shaping Models & HST Images
    HST images of some 50 pre planetary nebulae ("pPNe") are now available. A confrontation of images with theoretical shaping models is timely in order to...
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    Prediction of close binarity based on nebula morphology
    A thorough search of the OGLE-III microlensing project has more than doubled the total sample of PNe known to have close binary central stars. These discoveries...
  • Publication
    Probing O-enrichment in C-rich dust planetary nebulae
    The abundance of O in planetary nebulae (PNe) has been historically used as a metallicity indicator of the interstellar medium (ISM), where they originated; e.g...