Parallaxes for pre-main sequence Herbig Ae/Be stars

Details Parallaxes for pre-main sequence Herbig Ae/Be stars Parallaxes for pre-main sequence Herbig Ae/Be stars

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.177..105t&link_type=abstract

In ESA The Sci. Aspects of the Hipparcos Space Astrometry Mission p 105-106 (SEE N82-30146 20-88)

Astronomy and Astrophysics

Astronomy

2

Astrometry, European Space Programs, Herbig-Haro Objects, Stellar Parallax, A Stars, B Stars, Distance, Interstellar Extinction, Stellar Evolution, Stellar Radiation, T Tauri Stars

Scientific paper

The use of the Hipparcos satellite to determine the distances of Ae/Be stars is proposed. Ground based spectroscopic parallaxes are often in error because they assume a luminosity class V, whereas pre-main sequence objects are above the main sequence. Hipparcos can obtain geometrical parallaxes with a factor of error much 2. Data can be used to investigate the evolution of stable main sequence A and B stars, since Ae/Be stars are thought to be their predecessors. Because Ae/Be stars are usually associated with T Tauri stars, and are located in dark cloud regions, data can be used to study these phenomena, which are too faint to be observed directly by Hipparcos.

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