Hot subluminous stars of spectral type B and O are core helium-burning stars at the blue end
of the horizontal branch or have evolved even beyond that stage. Most hot subdwarf stars …

We present a new sample of 415 bright QSOs and Seyfert~ 1 nuclei drawn from the
Hamburg/ESO survey (HES). The sample is spectroscopically 99% complete and well …

In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys
and the availability of the Gaia mission Early Data Release 3 (EDR3), we compiled new …

There are a number of reasons for studying hot subdwarf pulsation; the most obvious being
that these stars remain a poorly understood late-stage of stellar evolution and knowledge of …

In light of substantial new discoveries of hot subdwarfs by ongoing spectroscopic surveys
and the availability of new all-sky data from ground-based photometric surveys and the Gaia …

Low-cost mass-produced sensors and optics have recently made it feasible to build
telescope arrays which observe the entire accessible sky simultaneously. In this article, we …

We present the quantitative methods used for selecting candidate metal-poor stars in the
Hamburg/ESO objective-prism survey (HES). The selection is based on the strength of the …

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS
(MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like …

In preparation for the upcoming all-sky data releases of the Gaia mission we compiled a
catalog of known hot subdwarf stars and candidates drawn from the literature and yet …

Results for Zone 1 of the Edinburgh-Cape (EC) Blue Object Survey are presented. This zone
covers that part of the North Galactic Cap more than∼ 30° from the Galactic plane and south …