Astrophysical parameters for AP and AM stars with HIPPARCOS

Details Astrophysical parameters for AP and AM stars with HIPPARCOS Astrophysical parameters for AP and AM stars with HIPPARCOS

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.177..111g&link_type=abstract

In ESA The Sci. Aspects of the Hipparcos Space Astrometry Mission p 111-113 (SEE N82-30146 20-88)

Astronomy and Astrophysics

Astronomy

A Stars, Astrometry, European Space Programs, Satellite Observation, Kinematics, Luminous Intensity, Stellar Magnitude, Stellar Parallax, Stellar Temperature

Scientific paper

The advantages of Hipparcos data over classical methods of determining Ap and Am star magnitudes, radii, and kinematics, are pointed out. Statistical investigations of magnitude show the same general trend, but have large discrepencies when results are compared for different groups of stars. Hipparcos parallaxes will aid calibration of photometric indices in terms of magnitude. Radii can best be determined using the relation of the flux received on the Earth from a star whose emitted flux can be calculated using Hipparcos parallaxes. Hipparcos can provide proper motions for over 1000 Ap and Am stars, enabling their spatial distribution and kinematic properties to be compared with normal stars.

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