55 citations · 135 across the 8 of their papers we have counts for
8 papers
Abundance determination in PNe: How to deal with large chemical inhomogeneities
Christophe Morisset, Jorge Garcia-Rojas, Veronica Gomez-Llanos +1
Abundance determinations in planetary nebulae (PNe) are crucial for understanding stellar evolution and the chemical evolution of the host galaxy. We discuss the complications invo…
Density biases and temperature relations for DESIRED HII regions
J. E. Méndez-Delgado, C. Esteban, J. García-Rojas +6
We present a first study based on the analysis of the DEep Spectra of Ionized REgions Database (DESIRED). This is a compilation of 190 high signal-to-noise ratio optical spectra of…
The messy death of a multiple star system and the resulting planetary nebula as observed by JWST
Orsola De Marco, Muhammad Akashi, Stavros Akras +66
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the…
Planetary nebulae with Wolf-Rayet-type central stars -- III. A detailed view of NGC 6905 and its central star
V. M. A. Gómez-González, G. Rubio, J. A. Toalá +6
We present a multi-wavelength characterisation of the planetary nebula (PN) NGC 6905 and its [Wolf-Rayet]-type ([WR]) central star (CSPN) HD 193949. Our Nordic Optical Telescope (N…
Detailed studies of IPHAS sources -- I. The disrupted late bipolar IPHASX J193718.6+202102
L. Sabin, M. A. Guerrero, S. Zavala +3
We present a detailed analysis of the new planetary nebula (PN) IPHASX J193718.6+202102 using deep imaging and intermediate- and high resolution spectroscopy that are interpreted t…
Atomic Data Assessment with PyNeb
Christophe Morisset, Valentina Luridiana, Jorge García-Rojas +3
PyNeb is a Python package widely used to model emission lines in gaseous nebulae. We take advantage of its object-oriented architecture, class methods, and historical atomic databa…
Bi-abundance photoionization models of planetary nebulae: determining the amount of Oxygen in the metal rich component
V. Gómez-Llanos, C. Morisset
We study the hypothesis of high metallicity clumps being responsible for the abundance discrepancy found in planetary nebulae between the values obtained from recombination and col…
The impact of strong recombination on temperature determination in planetary nebulae
V. Gomez-Llanos, C. Morisset, J. Garcia-Rojas +4
The long-standing difference in chemical abundances determined from optical recombination lines and collisionally excited lines raises questions about our understanding of atomic p…