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- University of TartuEE251 papers
- Centre National de la Recherche ScientifiqueFR95 papers
- Leibniz Institute for Astrophysics PotsdamDE95 papers
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- University of TurkuFI61 papers
- Universidad de La LagunaES59 papers
- Estonian Academy of SciencesEE58 papers
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- National Institute of Chemical Physics and BiophysicsEE45 papers
- Leiden UniversityNL42 papers
- University of HelsinkiFI42 papers
- National Institute for AstrophysicsIT38 papers
11 papers · 1 filter
Segregation of isotopes of heavy metals due to light-induced drift: results and problems
A. Sapar, A. Aret, R. Poolamäe +1
Atutov and Shalagin (1988) proposed light-induced drift (LID) as a physically well understandable mechanism to explain the formation of isotopic anomalies observed in CP stars. We…
A Pan-Spectral Method of Abundance Determination
A. Sapar, A. Aret, L. Sapar +1
We propose a new method for determination of element abundances in stellar atmospheres aimed for the automatic processing of high-quality stellar spectra. The pan-spectral method i…
Photometric study of the IC 65 group of galaxies
J. Vennik, U. Hopp
We carry out a photometric study of a poor group of late-type galaxies around IC 65, with the aim: (a) to search for new dwarf members and to measure their photometric characterist…
Towards an understanding of the Of?p star HD 191612: optical spectroscopy
Ian D. Howarth, Nolan R. Walborn, Danny J. Lennon +17
We present extensive optical spectroscopy of the early-type magnetic star HD 191612 (O6.5f?pe-O8fp). The Balmer and HeI lines show strongly variable emission which is highly reprod…
A cool R Coronae Borealis star Z UMi
Tonu Kipper, Valentina Klochkova
The high resolution spectra of a R CrB type star Z UMi are analysed. The atmospheric parameters of Z UMi are estimated: Teff=5250+/-250K and log g=0.5+/-0.3. This places Z UMi amon…
The optical spectrum of R Coronae Borealis close to 2003 decline
Tonu Kipper, Valentina Klochkova
Two sets of high-resolution spectra of R CrB obtained during the 2003 light decline are described. The first set was obtained on the descending branch of the light curve when V ~12…