Science Archives Publication System

The Ulysses space mission.

DOI: 10.1007/BF02507823 Bibcode: 1992NCimC..15..493M

Poletto, G.; Noci, G.; Monsignori Fossi, B. C.

The authors describe briefly the collaborative ESA-NASA Ulysses mission which will provide, for the first time in the history of the solar-system exploration, in situ observations of the heliosphere over a broad range of heliographic latitudes. Launched on October 6, 1990, Ulysses has been injected in a high-inclination orbit by means of a gravity…

1992 • Nuovo Cimento C Geophysics Space Physics C

Ulysses 2

Optical Properties of Cool Stars Discovered by EXOSAT

DOI: 10.1007/3-540-55310-X_189 Bibcode: 1992LNP...397..340T

Tagliaferri, G.; Pasquini, L.; Pallavicini, R. +3 more

1992 • Surface Inhomogeneities on Late-Type Stars

Exosat 2

A study of the IUE ultraviolet spectrum of KHI 02 Orionis.

DOI: 10.1515/astro-1992-0406 Bibcode: 1992BaltA...1..461S

Sapar, L.; Sapar, A.

1992 • Baltic Astronomy

IUE 2

Ephemerides of the 48 HIPPARCOS minor planets for the year 1992

Bibcode: 1992A&AS...93...11B

Bec-Borsenberger, A.

To be observed by Hipparcos, the position of each object has to be known with an accuracy of 1 arcsecond and its magnitude with an accuracy of 0.5 mag. Therefore, the orbital elements of the 48 selected minor planets of the Hipparcos mission, have been improved in order to extrapolate their ephemerides with the accuracy required. Updated ephemerid…

1992 • Astronomy and Astrophysics Supplement Series

Hipparcos 2

Detection of Rs-Canum Type Systems by Doublet 2800 MGII

DOI: 10.1007/BF00644909 Bibcode: 1992Ap&SS.188..205G

Gurzadian, G. A.; Cholakian, V. G.

The problem of the detection or discovery of RS CVn-type close binary systems with the aid of the magnesium emission doublet 2800 MgII is discussed. On the example of a star, HD 102077, the possibility of such an approach is shown. The determining factor is the magnitude of the measureless parameterR(MgII), that is, the relative power of the magne…

1992 • Astrophysics and Space Science

IUE 2

Ulysses Spacecraft Rendezvous with Jupiter

DOI: 10.1126/science.257.5076.1487 Bibcode: 1992Sci...257.1487B

Barbosa, David D.; Kivelson, Margaret G.

1992 • Science

Ulysses 2

Leaving Jupiter, Ulysses Heads for the Sun's South Pole

DOI: 10.1126/science.257.5076.1478 Bibcode: 1992Sci...257.1478A

Appenzeller, Tim

1992 • Science

Ulysses 2

Radial velocities of the IUE calibration stars

Bibcode: 1992Obs...112..123S

Stickland, D. J.

1992 • The Observatory

IUE 2

Precise equatorial coordinates of double and multiple systems : an astronomical support to the HIPPARCOS mission.

Bibcode: 1992A&AS...96..143P

Pannunzio, R.; Lattanzi, M. G.; Morbidelli, R. +3 more

Results are presented on determinations of precise positions (to the accuracy required for their possible inclusion in the Hipparcos Input Catalogue) of 623 double and multiple stars (126 of them newly discovered) from the measurement of 39 plates taken at the ESO and the Astronomical Observatory of Torino, obtained between 1984 and 1987. The tabl…

1992 • Astronomy and Astrophysics Supplement Series

Hipparcos 2

Stellar Wind Velocities and the Radiation-Driven Winds Theory for O-Stars

DOI: 10.1007/BF00645737 Bibcode: 1992Ap&SS.197..237B

Bernabeu, G.

In this paper we have carried out an analysis of the predictions of the radiatively driven stellar winds theories on 63 stars belonging to clusters or associations. The spectral types in our sample range from O3 to B0 and all classes of luminosity are considered. The study has been carried out starting from the relationship between the stellar-win…

1992 • Astrophysics and Space Science

IUE 2