Results 91 to 100 of about 6,211 (193)
News on the X-ray emission from hot subdwarf stars
Open Astronomy, 2017 In latest years, the high sensitivity of the instruments on-board the XMM-Newton and Chandra satellites allowed us to explore the properties of the X-ray emission from hot subdwarf stars.
Palombara Nicola La, Mereghetti Sandro
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HST spectroscopy of chemically peculiar hot subdwarfs: PG 0909+276 and UVO0512–08
Open Astronomy, 2017 High-resolution ultraviolet spectroscopy of two chemically peculiar hot subdwarfs, PG 0909+276 and UVO0512-08, has been obtained using the Hubble Space Telescope.
Wild James, Jeffery Christopher Simon
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Radial velocity measurements of the pulsating zirconium star: LS IV -14 116
, 2014 The helium-rich hot subdwarf LS IV -14 116 shows remarkably high surface abundances of zirconium, yttrium, strontium, and germanium, indicative of strong chemical stratification in the photosphere.
Ahmad, Amir +3 more
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On the 3He anomaly in hot subdwarf B stars
Open Astronomy, 2017 Decades ago, 3He isotope enrichment in helium-weak B-type main-sequence, in blue horizontal branch and in hot subdwarf B (sdB) stars, i.e., helium-core burning stars of the extreme horizontal branch, were discovered. Diffusion processes in the atmosphere
Schneider David +4 more
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The first massive compact companion in a wide orbit around a hot subdwarf star [PDF]
, 2023 S. Geier +7 more
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A subdwarf’s startling stellar wind [PDF]
Monthly Notices of the Royal Astronomical Society, 1987 Observations selectionnees de la sous naine HD 128220B pour illustrer plusieurs proprietes remarquables de son vent ...
openaire +1 more source
On the formation of single and binary helium-rich subdwarf O stars [PDF]
, 2010 Stephen Justham +2 more
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The MUCHFUSS photometric campaign
, 2018 Hot subdwarfs (sdO/Bs) are the helium-burning cores of red giants, which lost almost all of their hydrogen envelopes. This mass loss is often triggered by common envelope interactions with close stellar or even substellar companions. Cool companions like
Cordes, O. +6 more
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Testing Binary Population Synthesis Models with Hot Subdwarfs
, 2009 Models of binary star interactions have been successful in explaining the origin of field hot subdwarf (sdB) stars in short period systems, but longer-period systems that formed via Roche-lobe overflow (RLOF) mass transfer from the present sdB to its ...
George Sonneborn +6 more
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Atomic diffusion in the atmosphere of Feige 86
Open Astronomy, 2017 We have revisited the ultraviolet and optical spectra of the blue horizontal branch star Feige 86. The new analysis finds the star cooler and more compact than previously determined. The IUE spectrum of Feige 86 holds numerous unidentified spectral lines
Németh Péter
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