Astrofísicas: Nebulosas planetarias

  • Publicación
    High-Velocity Collimated Outflows in Planetary Nebulae: NGC 6337, HE 2-186, and K4-47
    We have obtained narrowband images and high-resolution spectra of the planetary nebulae NGC 6337, He 2-186, and K4-47 with the aim of investigating the relation...
  • Charla
    Hot Bubbles in Nebulae around Evolved Stars: probing stellar evolution
    In this talk we will present our most recent numerical and observational results on the formation, evolution, and X-ray emission from hot bubbles in nebulae...
  • Publicación
    Hot Evolved Objects in Different Parent Galaxies: The Stellar Winds of Three Planetary Nebula Nuclei in the Large Magellanic Cloud
    Three planetary nebulae in the Large Magellanic Cloud (LMC) were observed with the Faint Object Spectrograph on board the Hubble Space Telescope. Their central...
  • Publicación
    HST and VLT observations of the symbiotic star Hen 2-147. Its nebular dynamics, its Mira variable and its distance
    Aims:We investigate the dynamics of the nebula around the symbiotic star Hen 2-147, determine its expansion parallax, and compare it with the distance obtained...
  • Publicación
    Hubble Space Telescope and Ground-based Spectroscopy of K648 in M15
    We derive some element abundances for the central star of the planetary nebula K648 from analysis of Hubble Space Telescope Faint Object Spectrograph spectra...
  • Publicación
    Hubble Space Telescope Narrowband Imaging of the Planetary Nebula SMP 83/WS 35/N66
    LMC-SMP83 is a planetary nebula in the Large Magellanic Cloud whose central star is recently reported by Pena et al. to show decreases in temperature and...
  • Publicación
    Hubble Space Telescope Observations of Planetary Nebulae in the Magellanic Clouds. V. Mass Dependence of Dredge-up and the Chemical History of the Large Magellanic Cloud
    A photoionization analysis of Hubble Space Telescope UV and ground-based optical spectrophotometry is given for eight more planetary nebulae (PNs) in the Large...
  • Publicación
    Hubble Space Telescope Observations of Planetary Nebulae in the Magellanic Clouds. VI. Cycles 4 and 5 Ultraviolet Spectroscopy Using the Faint Object Spectrograph
    The Faint Object Spectrograph on board the Hubble Space Telescope (HST) is used to obtain spectra in the wavelength range lambda lambda 1150-4800 of three...
  • Publicación
    Hubble Space Telescope Observations of Planetary Nebulae in the Magellanic Clouds. VII. Cycle 3 and Archive Narrowband [O iii] 500.7 Nanometer Imaging
    We present the continuation of our analysis of narrowband [O III] images, obtained using the Hubble Space Telescope (HST), of planetary nebulae (PNs) in the...