Blue Large-Amplitude Pulsators and Other Short-Period Variable Stars in the OGLE-IV Galactic Disk Fields
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866913332229832704 |
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| author | Borowicz, J. Pietrukowicz, P. Mróz, P. Soszyński, I. Udalski, A. Szymański, M. K. Ulaczyk, K. Poleski, R. Kozłowski, S. Skowron, J. Skowron, D. M. Rybicki, K. Iwanek, P. Wrona, M. Gromadzki, M. |
| author_facet | Borowicz, J. Pietrukowicz, P. Mróz, P. Soszyński, I. Udalski, A. Szymański, M. K. Ulaczyk, K. Poleski, R. Kozłowski, S. Skowron, J. Skowron, D. M. Rybicki, K. Iwanek, P. Wrona, M. Gromadzki, M. |
| contents | Blue Large-Amplitude Pulsators (BLAPs) form a mysterious class of variable stars with typical periods of tens of minutes and amplitudes above 0.1 mag. In this work, we present results of a variability search focused on timescales shorter than 1 h, conducted in OGLE-IV Galactic disk fields containing about 1.1 billion stellar sources down to I$\approx$20 mag. Twenty-five BLAPs have been detected, 20 of which are new discoveries. Their periods range from 8.4 min to 62.1 min. We have also found six new eclipsing binary systems with orbital periods from 38.3 min to 121.3 min and five short-period large-amplitude (> 0.17 mag in the I-band) variable stars of unknown type. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_06012 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Blue Large-Amplitude Pulsators and Other Short-Period Variable Stars in the OGLE-IV Galactic Disk Fields Borowicz, J. Pietrukowicz, P. Mróz, P. Soszyński, I. Udalski, A. Szymański, M. K. Ulaczyk, K. Poleski, R. Kozłowski, S. Skowron, J. Skowron, D. M. Rybicki, K. Iwanek, P. Wrona, M. Gromadzki, M. Solar and Stellar Astrophysics Astrophysics of Galaxies Blue Large-Amplitude Pulsators (BLAPs) form a mysterious class of variable stars with typical periods of tens of minutes and amplitudes above 0.1 mag. In this work, we present results of a variability search focused on timescales shorter than 1 h, conducted in OGLE-IV Galactic disk fields containing about 1.1 billion stellar sources down to I$\approx$20 mag. Twenty-five BLAPs have been detected, 20 of which are new discoveries. Their periods range from 8.4 min to 62.1 min. We have also found six new eclipsing binary systems with orbital periods from 38.3 min to 121.3 min and five short-period large-amplitude (> 0.17 mag in the I-band) variable stars of unknown type. |
| title | Blue Large-Amplitude Pulsators and Other Short-Period Variable Stars in the OGLE-IV Galactic Disk Fields |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2309.06012 |