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Searches for Rare and New Types of Objects
S. G. Djorgovski, A. A. Mahabal, R. J. Brunner +4
Systematic exploration of the observable parameter space, covered by large digital sky surveys spanning a range of wavelengths, will be one of the primary modes of research with a…
Spectral analysis of multi mode pulsating sdB stars II. Feige 48, KPD 2109+4401 and PG 1219+534
U. Heber, I. N. Reid, K. Werner
Three members of the new class of pulsating sdB stars (sdBV or EC 14026 stars) are analysed from Keck HIRES spectra using line blanketed NLTE and LTE model atmospheres. Atmospheric…
X-Ray Bursts and Proton Captures Close to the Dripline
T. Rauscher, F. Rembges, H. Schatz +2
The hydrogen-rich accreted envelopes of neutron stars in binary systems are the site for the rapid proton capture nucleosynthethic process (rp-process), which involves nuclei close…
Chemical composition of evolved stars in the open cluster M 67
G. Tautvaisiene, B. Edvardsson, I. Tuominen +1
High-resolution spectra of six core helium-burning `clump' stars and three giants in the open cluster M 67 have been obtained with the SOFIN spectrograph on the Nordic Optical Tele…