Some optical observations of HD 192273 - A proposed identification for a possible EUV source

Astronomy and Astrophysics – Astronomy

Scientific paper

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Early Stars, Extreme Ultraviolet Radiation, Radial Velocity, Stellar Motions, Stellar Spectrophotometry, Galactic Radiation, Hot Stars, Main Sequence Stars, Subdwarf Stars

Scientific paper

Spectroscopic and photometric observations have been made of the high-latitude B2 V star HD 192273, which had been proposed as in (uncertain) identification for an (uncertain) EUV detection. The optical observations do not establish any peculiarities or variability. Furthermore, a preexisting, null proper-motion determination does not support a suggestion that the star is a nearby, hot subdwarf. The available data are most consistent with an interpretation of HD 192273 as a normal main-sequence star rather far from the galactic plane, and there is no compelling reason to associate it with an EUV source at the present time.

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