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Blue Large-Amplitude Pulsators and Other Short-Period Variable Stars in the OGLE-IV Galactic Disk Fields

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dc.abstract.enBlue 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≈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.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorBorowicz, Joachim
dc.contributor.authorPietrukowicz, Paweł
dc.contributor.authorMróz, Przemysław
dc.contributor.authorSoszyński, Igor
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorSzymański, Michał
dc.contributor.authorUlaczyk, K.
dc.contributor.authorPoleski, Radosław
dc.contributor.authorKozłowski, Szymon
dc.contributor.authorSkowron, Jan
dc.contributor.authorSkowron, Dorota
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorIwanek, Patryk
dc.contributor.authorWrona, Marcin
dc.contributor.authorGromadzki, Mariusz
dc.date.accessioned2024-01-24T18:40:12Z
dc.date.available2024-01-24T18:40:12Z
dc.date.copyright2023-01-21
dc.date.issued2023
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume73
dc.identifier.doi10.32023/0001-5237/73.1.1
dc.identifier.issn0001-5237
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/102391
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2023AcA....73....1B
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofActa Astronomica
dc.relation.pages1-19
dc.rightsOther
dc.sciencecloudnosend
dc.titleBlue Large-Amplitude Pulsators and Other Short-Period Variable Stars in the OGLE-IV Galactic Disk Fields
dc.typeJournalArticle
dspace.entity.typePublication