Science Archives Publication System

Numerical Modelling and Simulation for Multi-Spacecraft Data Analysis: Approaches and Examples

Bibcode: 1998ISSIR...1..449B

Büchner, Jörg; Kuska, Jens-Peer; Wiechen, Heinz

1998 • ISSI Scientific Reports Series

Cluster 1

CP stars: Photometric calibrations of luminosity using HIPPARCOS data

DOI: 10.48550/arXiv.astro-ph/9805016 Bibcode: 1998CoSka..27..184F

Jordi, C.; Luri, X.; Figueras, F. +7 more

The application of the Stromgren photometric luminosity calibrations to different types of CP stars is reexamined in the light of the new Hipparcos data. A first attempt is made to use the LM statistical parallax method - based on the maximum likelihood principle - to obtain a calibration of the absolute magnitude as a function of two Stromgren co…

1998 • Contributions of the Astronomical Observatory Skalnate Pleso

Hipparcos 1

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

DOI: 10.1023/A:1001888701580 Bibcode: 1998Ap&SS.260..181G

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…

1998 • Astrophysics and Space Science

eHST 1

Planetary Nebulae

DOI: 10.1023/A:1001511603093 Bibcode: 1998Ap&SS.255..489C

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.

1998 • Astrophysics and Space Science

ISO 1

Stellar Wind Variability from IUE Spectra of Epsilon Orionis

DOI: 10.1515/astro-1998-0307 Bibcode: 1998BaltA...7..451S

Sapar, L.; Sapar, A.

21 IUE spectra of epsilon Ori (HD 37128), B0 supergiant, were studied to analyze variations in the profiles of the resonance lines of N V, C IV, Si IV and Si III. The largest variations in the profiles of resonance doublets of N V, C IV and Si IV are found in blue wings of the lines at velocities from --1500 to --2000 km/s, reaching in some spectr…

1998 • Baltic Astronomy

IUE 1

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

DOI: 10.1023/A:1001547232226 Bibcode: 1998Ap&SS.255..483G

Szczerba, Ryszard; Gesicki, Krzysztof

1998 • Astrophysics and Space Science

ISO 1

ISO Spectra of Symbiotic Stars

DOI: 10.1023/A:1001560429133 Bibcode: 1998Ap&SS.255..367S

Vogel, M.; Schild, H.

1998 • Astrophysics and Space Science

ISO 1

ISOPHOT Mapping Observations of Carbon Stars

DOI: 10.1023/A:1001548110477 Bibcode: 1998Ap&SS.255..341I

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 …

1998 • Astrophysics and Space Science

Hipparcos ISO 1

The energy distribution of Beta CrB for the specific stellar abundances

DOI: 10.48550/arXiv.astro-ph/9805047 Bibcode: 1998CoSka..27..192C

Castelli, F.

The comparison of the observed and computed energy distributions of Beta CrB has shown that a model with the specific chemical composition of the star can account for the visual energy distribution, while it is still unable to reproduce ultraviolet observations shortward of 1700 Angstroms. Furthermore, the predicted absorption of strong Fe II and …

1998 • Contributions of the Astronomical Observatory Skalnate Pleso

IUE 1

Theory of AGB Evolution

DOI: 10.1023/A:1001115219138 Bibcode: 1998Ap&SS.255..267B

Blöcker, Thomas

1998 • Astrophysics and Space Science

ISO 1