A SEARCH FOR PULSATION IN TWENTY-ONE WHITE DWARFS
| Autor: | Ernst Paunzen, T. K. Watson, Marek Drozdz, Z. Zemanová, Jan Janík, Gerald Handler, M. S. O’Brien, M. Rode-Paunzen |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
010308 nuclear & particles physics Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics White dwarf Astronomy and Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics 010303 astronomy & astrophysics 01 natural sciences Astrophysics::Galaxy Astrophysics |
| Zdroj: | Revista Mexicana de Astronomía y Astrofísica. 56:193-199 |
| ISSN: | 0185-1101 |
| Popis: | Well-defined astrophysical constraints of white dwarfs (WDs), such as on the presence or absence of pulsational variability, are very much needed to refine and develop current models. Because these stars are rather faint and variability periods are mostly below one hour, only a very limited amount of space-based data is currently available for these objects. We present about 68 hours of highquality ground-based photometric time-series data for twenty-one WDs acquired at five different observatories. No new pulsators were detected but the derived upper limits of variability, which are typically on the order of only a few mmags, provide important input for pulsation models. |
| Databáze: | OpenAIRE |
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