1. Introduction Hot subdwarf stars consist of O and B type stars (spectral type sdO, sdB, and related objects at a late stellar evolution ) stage (Heber 2009, 2016 ). These stars have low …

The Book of the Fixed Stars contains an extensive star catalogue, which lists star co-ordinates and magnitude estimates. Al-ū fī’s original Arabic text contained 55 astronomical tables as well ...

Stars are the nuclear forges of the cosmos, responsible for the creation of most elements heavier than helium in the Universe. Some of these elements are created in the hearts of stars over …

Large modern surveys of metal-deficient stars in the Galaxy have revealed that the fraction of carbon-enhanced objects is sig-nificant at low metallicity (Beers et al. 1992; Christlieb 2003). …

Because stars have finite sizes, only a massive compact object can explain stars ejected at 1,000-km s−1 velocities. Hills (1988) predicted the existence of such unbound stars and called them …

For the German version of the STARS, Papoušek et al. (2011) found thathe six components belong to two correlated second-order factors: statistics anxiety is measured by the anxiety …

The principal we stars are dependent for classification on the char- are numbered and frequently have their names acter of the paper, the script, and the illustra- written in Arabic alongside them.