Parallaxes and Proper Motions of Prototypes of Astrophysically Interesting Classes of Stars

Abstract

Hipparcos data are presented for 13 stars belonging to six different evolutionary types that present various puzzles. There are three FK Comae stars, one Wolf-Rayet binary, the ``galloping giant'' FG Sagittae, two high-velocity B stars, two runaway T Tauri stars, and four cataclysmic variables. Most of the numbers are of limited statistical significance, because even the best-known examples of rare classes of stars are likely to be distant and faint. In most cases, the stars are confirmed as being more or less what was expected. A few are not. We present these data primarily to call attention to the fact that the 118,226 stars in the Hipparcos Catalogue include some that are of indiviual, as well as of statistical, interest. Based on data from the ESA Hipparcos astrometry satellite.