English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The project Massive Unseen Companions to Hot Faint Underluminous Stars fromSDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compactcompanions like massive white dwarfs (M > 1.0 Msun), neutron stars or stellarmass black holes. The existence of such systems is predicted by binaryevolution theory and recent discoveries indicate that they exist in our Galaxy.First results are presented for seven close binary sdBs with short orbitalperiods ranging from 0.21 d to 1.5 d. The atmospheric parameters of all objectsare compatible with core helium-burning stars. The companions are most likelywhite dwarfs. In one case the companion could be shown to be a white dwarf bythe absence of light-curve variations. However, in most cases late type mainsequence stars cannot be firmly excluded. Comparing our small sample with theknown population of close sdB binaries we show that our target selection methodaiming at massive companions is efficient. The minimum companion masses of allbinaries in our sample are high compared to the reference sample of known sdBbinaries.

Massive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binaries