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ISO-SWS Spectra of Carbon Stars: Molecular Features and a Comparison with Models

Jørgensen, U. G.; Hron, J.; Kerschbaum, F. +1 more

The Intermittently Embedded Herbig Ae/Be Stars ISO and Ground-Based IR Observations

Sitko, M. L.; Grady, C. A.; Grinin, V. P. +7 more

We discuss silicate emission profiles observed with the ISO SWS and ground-based IR observations in a population of intermittently embedded Herbig Ae/Be stars which are viewed edge-on to their polarimetrically identified dust and gas disks. The ISO SWS observations confirm the lack of a simple correlation between system age and the profile shape. …

Episodic Mass Loss and Rapid Lithium Enrichment and Depletion in K Giants

de La Reza, R.; Drake, N. A.; da Silva, L.

ISOPHOT S Observations of 3 M Dwarfs

Liebert, James; Leinert, Christoph; Wehrse, Rainer +2 more

The M dwarfs GL 832 (spectral type M2), GL 887 (M1), and GL 1 (M2) have been observed with the ISOPHOT spectrophotometers in the range 2.5-12µm at high signal-to-noise ratios. Since optical and ground based near-infrared data are also available, more than 95 % of the total flux is now covered for these objects. It is seen that between 2.5 µm and a…

Hubble Space Telescope-WFPC2/Hα Observations of the Ejected Nebula M1-67

Moffat, Anthony F. J.; Grosdidier, Yves; Acker, Agnès

We present HST-WFPC2/Hα deep images of the ejected nebula M1-67. Our data suggest that M1-67 is the imprint of a previous, slow LBV wind ejected from the central star WR124, now a WN8 star. We find evidence that the LBV wind is highly variableand anisotropic. Some dense, persisting clumps have possibly been ejected directly from the stellar surfac…

Planetary Nebulae

Cox, P.

This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.

Mass Loss During Proto-Planetary Phase of Evolution The Case of HD 101584 = IRAS 11385-5517

Szczerba, Ryszard; Gesicki, Krzysztof

ISO Spectra of Symbiotic Stars

Vogel, M.; Schild, H.

ISOPHOT Mapping Observations of Carbon Stars

Izumiura, H.; Hashimoto, O.

Mapping observations have been made toward five carbon stars in the far-infrared using ISOPHOT, an imaging photo-polarimeter on board the Infrared Space Observatory. Cold, very extended dust shells are clearly revealed in two of them. Y CVn is surrounded by a very extended, detached dust shell, which indicates a sudden decline of the mass-loss by …

Theory of AGB Evolution

Blöcker, Thomas