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- Uppsala UniversitySE522 papers
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4 papers · 2 filters
The surface composition of six newly discovered chemically peculiar stars. Comparison to the HgMn stars Lep and Scl and the superficially normal B star Cap
Richard Monier, E. Niemczura, D. W. Kurtz +10
We report on a detailed abundance study of six bright, mostly southern, slowly rotating late B stars: HD~1279 (B8III), HD~99803 (B9V), HD~123445 (B9V), HD~147550 (B9V), HD~171961 (…
Surface structure of 45 Hercules: An otherwise unremarkable Ap star with a surprisingly weak magnetic field
O. Kochukhov, H. Gürsoytrak Mutlay, A. M. Amarsi +3
The origin of magnetic fields and their role in chemical spot formation on magnetic Ap stars is currently not understood. Here we contribute to solving this problem with a detailed…
A Search for Chemical Anomalies of Seven A-types Stars
Yahya Nasolo, Şeyma Çalışkan
We present a chemical abundance analysis of seven A-type stars with no detailed chemical abundance measurements in the literature. High-resolution spectra of the targets HD 2924, H…
Transit timing variation analysis of the low-mass brown dwarf KELT-1 b
Ö. Baştürk, J. Southworth, S. Yalçınkaya +8
We investigate whether there is a variation in the orbital period of the short-period brown dwarf-mass KELT-1\,b, which is one of the best candidates to observe orbital decay. We o…