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Revealing the mid-infrared emission structure of IRAS 16594-4656 and IRAS 07027-7934
D. A. Garcia-Hernandez, A. Manchado, P. Garcia-Lario +3
TIMMI2 diffraction-limited mid-infrared images of a multipolar proto-planetary nebula IRAS 16594-4656 and a young [WC] elliptical planetary nebula IRAS 07027-7934 are presented. Th…
An infrared study of galactic OH/IR stars. II. The `GLMP sample' of red oxygen-rich AGB stars
F. M. Jiménez-Esteban, P. García-Lario, D. Engels +1
We present optical and near-infrared finding charts taken from the DSS and 2MASS surveys of 94 IRAS sources selected from the GLMP catalogue (Garc\'ıa-Lario 1992), and accurate ast…
On the evolutionary connection between AGB stars and PNe
F. M. Jiménez-Esteban, P. García-Lario, D. Engels
The `O-rich AGB sequence' is a sequence of colours describing the location of O-rich AGB stars in the IRAS two-colour diagram [12]--[25] vs [25]--[60]. We propose an evolutionary s…
Why are massive O-rich AGB stars in our Galaxy not S-stars?
D. A. Garcia-Hernandez, P. Garcia-Lario, B. Plez +4
We present the main results derived from a chemical analysis carried out on a large sample of galactic O-rich AGB stars using high resolution optical spectroscopy (R~40,000-50,000)…
The use of Planetary Nebulae precursors in the study of Diffuse Interstellar Bands
P. Garcia-Lario, R. Luna, M. A. Satorre
We present the first results of a systematic search for Diffuse Interstellar Bands in a carefully selected sample of post-AGB stars observed with high resolution optical spectrosco…
Stellar evolution and the 'O-rich AGB sequence'
F. M. Jimenez-Esteban, D. Engels, P. Garcia-Lario
The `O-rich AGB sequence' is a well defined area occupied by oxygen-rich AGB stars (OH/IR) in the IRAS two-colour diagram [12]-[25] vs [25]-[60]. This sequence is interpreted in te…