13 citations · 40 across the 9 of their papers we have counts for
9 papers
The ubiquity of turbulence in the expanding kinematics of the ionized shells of Galactic planetary nebulae
Francisco Ruiz-Escobedo, Michael G. Richer, José Alberto López
We present an analysis of the residual velocities from a sample of 105 Galactic planetary nebulae (PNe), the largest done to date on this subject. The analysis has been carried out…
The extremely young planetary nebula M 3-27: an analysis of its evolution, physical conditions and abundances
Francisco Ruiz-Escobedo, Miriam Peña, Ana Valeria Beltrán-Sánchez
Spectrophotometric data of the young planetary nebula M 3-27, from 2004 to 2021, are presented and discussed. We corroborate that the H I Balmer lines present features indicating t…
Numerical models of planetary nebulae with different episodes of mass ejection: the particular case of HuBi 1
Ary Rodríguez-González, Miriam Peña, Liliana Hernández-Martínez +4
We have studied the evolution of HuBi 1-like planetary nebulae, considering several stages of mass injection. We have carried out numerical ionization+1D hydrodynamics+atomic/ionic…
Evolution of Hen\,3-1357, the Stingray Nebula
Miriam Peña, Mudumba Parthasarathy, Francisco Ruiz-Escobedo +1
The spectroscopic evolution of Hen\,3-1357, the Stingray Nebula, is presented by analysing data from 1990 to 2021. High resolution data obtained in 2021 with South African Large Te…
Abundance Discrepancy Factors in high density planetary nebulae
Francisco Ruiz-Escobedo, Miriam Peña
From high-resolution spectra, chemical abundances from collisionally excited lines (CELs) and optical recombination lines (ORLs) have been determined for planetary nebulae Cn 3-1,…
Twenty years of observations of PM 1-188: Its chemical abundances and extraordinary kinematics
Miriam Peña, Liliana Hernández-Martínez, Francisco Ruiz-Escobedo
The analysis of 20 years of spectrophotometric data of the double shell planetary nebula PM\,1-188 is presented, aiming to determine the time evolution of the emission lines and th…
Chemistry in the dIrr galaxy Leo A
Francisco Ruiz-Escobedo, Miriam Peña, Liliana Hernández-Martínez +1
We present chemical abundance determinations of two H II regions in the dIrr galaxy Leo A, from GTC OSIRIS long-slit spectra. Both H II regions are of low excitation and seem to be…
The kinematical behaviour of ORLs and CELs in Galactic PNe
Miriam Peña, Francisco Ruiz-Escobedo, Jackeline S. Rechy-Garcia +1
The kinematics of the plasma in 14 PNe is analysed by measuring the expansion velocities (V) of different ions as derived from their collisionally excited lines (CELs) and…
The kinematical behavior of ORLs and CELs in PNe with [WC] central star
Miriam Pena, Francisco Ruiz-Escobedo, Jackeline Rechy-Garcıa +1
In Planetary Nebulae (PNe) and HII regions ionic abundances can be derived by using collisionally excited lines (CELs) or recombination lines (ORLs). Such abundances do not coincid…