Hydrogen-deficient Stars: Proceedings of a Workshop Held at Eberhard Karls University, Tübingen, Germany, 17-21 September 2007Klaus Werner, Thomas Rauch "These are the proceedings of a conference on Hydrogen-Deficient Stars held at the University of Tübingen, Germany, from September 17-21 2007. This conference was the third in a series of international colloquia on this topic. The first one took place in Mysore, India in 1985, and the second one a decade alter, 1995 in Bamberg, Germany. Twelve years later it was considered useful to gather again to discuss the progress and the future directions in this field. At the conference 68 participants from 20 countries presented 25 invited talks, 27 contributed talks, and 16 posters. Hydrogen-deficiency is exhibited by many evolved high-and low-mass stars. Therefore research on hydrogen-deficient stars is quite diverse since such stars are found in almost every region of the Hertzsprung-Russell diagram. The stellar classes discussed in detail at the conference were: R Coronae Borealis stars, extreme helium stars, Wolf-Rayet central stars of planetary nebulae, PG 1159 stars and related objects, white dwarfs of spectral type DO, DB, and DQ, and helium-rich subdwarf O and B stars. Also highlighted were hydrogen-deficient stars in close binary systems (AM Cvn and ultracompact low-mass X-ray binaries), massive Wolf-Rayet Stars and their relation to Type I supernovae and Gamma-ray bursts. The different classes of objects discussed in this volume are grouped by spectral and pulsational characteristics, by evolutionary scenarios such as late helium flashes and double-degenerate mergers, and by links among the classes."--Publisher's website. |
Contents
The Evolution of R Coronae Borealis Stars | 17 |
Fluorine in R Coronae Borealis Stars | 35 |
Extremely Cool Galactic RCB Star? | 49 |
Copyright | |
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Common terms and phrases
abundances accretion analysis angular momentum ASP Conference Series Asplund Astrophysics atmosphere born-again carbon central stars companion convection core CSPN Dreizler e-Book ISBN effective temperature ejected emission lines envelope evolution evolutionary Figure flux Galactic Galactic bulge Górny GW Vir H-deficient H-rich Hamann He-sdO Heber helium-rich Herwig HR diagram hydrogen hydrogen-deficient Iben instability Jeffery light curve log g luminosity mass loss mass transfer Mazzali merger MNRAS models Napiwotzki Nelemans observed opacity optical orbital orbital periods oxygen panel parameters period phase photospheric planetary nebulae Podsiadlowski post-AGB progenitor pulsations Rauch RCB stars Saio Sakurai's object scenario Schönberner sdO stars SDSS shell simulations spectra spectroscopic spectrum stellar stellar evolution stellar wind strange mode subdwarf supernova Teff thermal pulse timescale velocity VLTP Werner white dwarf wind Wolf-Rayet stars X-ray