Search
Search Results
-
50 Years of quantum chromodynamics
Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be described by a local SU(3) gauge symmetry with charges called...
-
Invariant differential operators for non-compact Lie algebras parabolically related to conformal Lie algebras
In the present paper we continue the project of systematic construction of invariant differential operators for non-compact semisimple Lie groups....
-
Progress in the asteroseismic analysis of the pulsating sdB star PG 1605+072
The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation properties, and is one of the biggest challenge in the field of...
-
Amplitude variations in pulsating sdB stars
Frequency analyses over two or more seasons are presented for several pulsating sdB stars. These results indicate that amplitude variations in sdBV...
-
The Edinburgh-Cape blue object survey
A brief summary is given of the basic plan and aims of the Edinburgh-Cape Blue Object Survey. We relate some of the difficulties encountered and...
-
Time-resolved spectroscopy of the sdBV V338 Serpentis
We obtained 1955 high-resolution spectra of the high-amplitude pulsating subdwarf B star V338 Ser with the FIES spectrograph at the 2.5 m Nordic...
-
Stellar Pulsation, Subdwarf B Stars and High Time Resolution Astrophysics
This chapter asks what high time resolution can bring to the study of stellar pulsation, with particular focus on the pulsations of subdwarf B stars....
-
High-Speed Optical Spectroscopy
The large surveys and sensitive instruments of modern astronomy are turning ever more examples of variable objects, many of which are extending the...
-
MSST observations of the pulsating sdB star PG 1605+072
We present the first results from the MultiSite Spectroscopic Telescope (MSST) observations of the sdBV star PG 1605+072. Pulsating sdB stars (also...
-
Asteroseismology: Past, present and future
Asteroseismology studies stars with a wide variety of interior and surface conditions. For two decades asteroseismic techniques have been applied to...
-
Atmospheric Parameters and Abundances of sdB Stars
We summarize recent results of quantitative spectral analyses using NLTE and metal line-blanketed LTE model atmospheres. Temperatures and gravities...
-
HST/STIS observations of sdBV stars: testing diffusion and pulsation theory
We present the initial results of an abundance analysis of echelle UV spectra of five hot subdwarf B (sdB) stars. These stars have been identified as...
-
Pulsating sdB Stars: A New Approach to Probing their Interiors
Horizontal branch stars should show significant differential rotation with depth. Models that assume systematic angular momentum exchange in the...
-
Colour and radial velocity variations in pulsating subluminous B stars
The utility of pulsations for the investigation of the structure and evolution of subdwarf B stars is considerable. However, the small number of...
-
Towards Asteroseismology of the Non-Radial Pulsating SDB Star PG 1605+072
The recently discovered new class of sdB pulsators (sdBV) offers a powerful possibility for the investigation of their interior and thus their...
-
Photometric and Spectroscopic Monitoring of the SDBV Star PG 1605+072:
A small fraction of sdB stars show short-period, multiperiodic light variations and form the new class of pulsating star known as EC 14026 variables,...
-
Discovery of A New Class of Pulsating Stars: Gravity-mode Pulsators among Subdwarf B Stars
During the course of an ongoing CCD monitoring program to investigate low-level light variations in subdwarf B (sdB) stars, weserendipitously...
-
Discovery of a New Class of Pulsating Stars: Gravity-Mode Pulsators among Subdwarf B Stars
During the course of an ongoing CCD monitoring program to investigate low-level light variations in subdwarf B (sdB) stars, we serendipitously...