Ultraviolet photometry with the Astronomical Netherlands Satellite (ANS) : faint blue stars in the halo.

Blue stars at high galactic latitudes have been observed with the UV telescope on board ANS. In this paper a subset of the collected data pertaining to the cooler stars is discussed. Most of them have energy distributions in general agreement with the visual spectral type. One star is exceptionally blue, and of seven possible horizontal-branch stars, two have UV energy distributions distinct from main-sequence stars in the sense that they have an excess at 1550 A and a large Balmer jump.