Browsing Research publications by Author "Udalski, Andrzej"

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    • Gaia21bty: An EXor light curve exhibiting a FUor spectrum 

      Siwak, Michał; Hillenbrand, Lynne A.; Kóspál, Ágnes; Ábrahám, Péter; Giannini, Teresa; De, Kishalay; Moór, Attila; Szilágyi, Máté; Janík, Jan; Koen, Chris; Park, Sunkyung; Nagy, Zsófia; Miera, Fernando Cruz-Sáenz de; Fiorellino, Eleonora; Marton, Gábor; Kun, Mária; Lucas, Philip W.; Udalski, Andrzej; Szabó, Zsófia Marianna (2023-10-30)
      Gaia21bty, a pre-main sequence star that previously had shown aperiodic dips in its light curve, underwent a considerable Delta G~2.9 mag brightening that occurred over a few months between 2020 October - 2021 February. ...

    • VVV-WIT-08: the giant star that blinked 

      Smith, Leigh C.; Koposov, Sergey E.; Lucas, Philip W.; Sanders, Jason L.; Minniti, Dante; Udalski, Andrzej; Evans, N. Wyn; Aguado, David; Ivanov, Valentin D.; Saito, Roberto K.; Fraga, Luciano; Pietrukowicz, Pawel; Penoyre, Zephyr; González-Fernández, Carlos (2021-06-11)
      We report the serendipitous discovery of a late-type giant star that exhibited a smooth, eclipse-like drop in flux to a depth of 97 per cent. Minimum flux occurred in April 2012 and the total event duration was a few hundred ...