Aims: The kinematics, shaping, density distribution, expansion distance, and ionized mass of the nebula Hen 2-104, and the nature of its symbiotic Mira are...
High resolution spectroscopy of central stars of planetary nebulae. I - Basic atmospheric parameters and their interpretation
The authors have obtained high-resolution spectrograms of H-rich central stars of planetary nebulae (CSPN) with the 3.6 m telescope and Cassegrain echelle...
High-resolution Hα imaging of the northern Galactic plane and the IGAPS image database
The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys IPHAS and UVEX based on data from the Isaac Newton Telescope (INT)...
High-resolution Imaging of NGC 2346 with GSAOI/GeMS: Disentangling the Planetary Nebula Molecular Structure to Understand Its Origin and Evolution
We present high spatial resolution (≈ 60–90 mas) images of the molecular hydrogen emission in the planetary nebula (PN) NGC 2346. The data were acquired during...
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...
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...
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...