115 citations · 177 across the 6 of their papers we have counts for
6 papers
A distance scale of planetary nebulae based on mid-infrared data
R. Ortiz, M. V. F. Copetti, S. Lorenz-Martins
Some of the most successful statistical methods for obtaining distances of planetary nebulae (PNe) are based on their apparent sizes and radio emission intensities. These methods h…
A mid-infrared imaging catalogue of post-AGB stars
Eric Lagadec, Tijl Verhoelst, Djamel Mekarnia +11
Post-AGB stars are key objects for the study of the dramatic morphological changes of low- to intermediate-mass stars on their evolution from the Asymptotic Giant Branch (AGB) towa…
NSCC -- A New Scheme of Classification of C-rich Stars Devised from Optical and Infrared Observations
Ana Beatriz de Mello, Silvia Lorenz-Martins, Francisco Xavier de Araújo +2
A new classification system for carbon-rich stars is presented based on an analysis of 51 AGB carbon stars through the most relevant classifying indices available. The extension in…
Evolution from AGB to planetary nebula in the MSX survey
R. Ortiz, S. Lorenz-Martins, W. J. Maciel +1
We investigate the evolution of oxygen- and carbon-rich AGB stars, post-AGB objects, and planetary nebulae using data collected mainly from the MSX catalogue. Magnitudes and colour…
Temperature predictions for dust embedded AGB stars: how far can we go with synthetic near-infrared photometry ?
E. Lastennet, S. Lorenz-Martins, F. Cuisinier +1
We discuss the possibilities of the BaSeL models in its lowest temperature boundary (Teff ~ 2500 K for cool giants) to provide the Teff of AGB stars. We present the first step of o…
Modeling of C stars with core/mantle grains: Amorphous carbon + SiC
S. Lorenz-Martins, F. X. de Araujo, S. J. Codina Landaberry +2
A set of 45 dust envelopes of carbon stars has been modeled. Among them, 34 were selected according to their dust envelope class (as suggested by Sloan, Little-Marenin & Price, 199…