Zobrazeno 1 - 10
of 656
pro vyhledávání: '"Szymanski, M. K."'
Autor:
Iwanek, P., Soszyński, I., Stępień, K., Kozłowski, S., Skowron, J., Udalski, A., Szymański, M. K., Wrona, M., Pietrukowicz, P., Poleski, R., Mróz, P., Ulaczyk, K., Skowron, D. M., Gromadzki, M., Rybicki, K., Mróz, M. J., Ratajczak, M.
Stellar rotation, a key factor influencing stellar structure and evolution, also drives magnetic activity, which is manifested as spots or flares on stellar surface. Here, we present a collection of 18 443 rotating variables located toward the Galact
Externí odkaz:
http://arxiv.org/abs/2406.18728
Autor:
Borowicz, J., Pietrukowicz, P., Skowron, J., Soszyński, I., Udalski, A., Szymański, M. K., Ulaczyk, K., Poleski, R., Kozłowski, S., Mróz, P., Skowron, D. M., Rybicki, K., Iwanek, P., Wrona, M., Gromadzki, M., Mróz, M. J.
Publikováno v:
Acta Astronomica, Vol. 73 (2023), No. 4, pp. 265-290
In this work, we search the OGLE-IV outer Galactic bulge fields for short-period variable objects. The investigation focuses on unexplored timescales roughly below one hour in an area containing about 700 million stellar sources down to approximately
Externí odkaz:
http://arxiv.org/abs/2404.17715
Autor:
Pietrukowicz, P., Latour, M., Soszynski, I., Di Mille, F., King, P. Soto, Angeloni, R., Poleski, R., Udalski, A., Szymanski, M. K., Ulaczyk, K., Kozlowski, S., Skowron, J., Skowron, D. M., Mroz, P., Rybicki, K., Iwanek, P., Wrona, M., Gromadzki, M.
Blue Large-Amplitude Pulsators (BLAPs) are a recently discovered class of short-period pulsating variable stars. In this work, we present new information on these stars based on photometric and spectroscopic data obtained for known and new objects de
Externí odkaz:
http://arxiv.org/abs/2404.16089
Autor:
Soszyński, I., Skowron, D. M., Udalski, A., Pietrukowicz, P., Gromadzki, M., Szymański, M. K., Skowron, J., Mróz, P., Poleski, R., Kozłowski, S., Iwanek, P., Wrona, M., Ulaczyk, K., Rybicki, K., Mróz, M.
We report the discovery of the classical Cepheid OGLE-GD-CEP-1884 (= GDS_J1535467-555656) with the longest pulsation period known in our Galaxy. The period of 78.14 d is nearly 10 d longer than that of the previous record-holding Cepheid, S Vulpecula
Externí odkaz:
http://arxiv.org/abs/2404.00151
Autor:
Mroz, P., Udalski, A., Szymanski, M. K., Kapusta, M., Soszynski, I., Wyrzykowski, L., Pietrukowicz, P., Kozlowski, S., Poleski, R., Skowron, J., Skowron, D., Ulaczyk, K., Gromadzki, M., Rybicki, K., Iwanek, P., Wrona, M., Ratajczak, M.
Publikováno v:
ApJS 273, 4 (2024)
Measurements of the microlensing optical depth and event rate toward the Large Magellanic Cloud (LMC) can be used to probe the distribution and mass function of compact objects in the direction toward that galaxy - in the Milky Way disk, the Milky Wa
Externí odkaz:
http://arxiv.org/abs/2403.02398
Autor:
Mroz, P., Udalski, A., Szymanski, M. K., Soszynski, I., Wyrzykowski, L., Pietrukowicz, P., Kozlowski, S., Poleski, R., Skowron, J., Skowron, D., Ulaczyk, K., Gromadzki, M., Rybicki, K., Iwanek, P., Wrona, M., Ratajczak, M.
The gravitational wave detectors have unveiled a population of massive black holes that do not resemble those observed in the Milky Way. They may have formed due to the evolution of massive low-metallicity stars, dynamical interactions in dense stell
Externí odkaz:
http://arxiv.org/abs/2403.02386
Autor:
Mróz, M. J., Pietrukowicz, P., Poleski, R., Udalski, A., Szymański, M. K., Gromadzki, M., Ulaczyk, K., Kozłowski, S., Skowron, J., Skowron, D. M., Soszyński, I., Mróz, P., Ratajczak, M., Rybicki, K. A., Iwanek, P., Wrona, M.
Publikováno v:
Acta Astronomica, vol, 73, no 2, p. 127-158 (2023)
We present results of a search for transiting exoplanets in 10-yr long photometry with thousands of epochs taken in the direction of the Galactic bulge. This photometry was collected in the fourth phase of the Optical Gravitational Lensing Experiment
Externí odkaz:
http://arxiv.org/abs/2311.07647
Autor:
Soszyński, I., Pietrukowicz, P., Udalski, A., Skowron, J., Szymański, M. K., Poleski, R., Skowron, D. M., Kozłowski, S., Mróz, P., Iwanek, P., Wrona, M., Ulaczyk, K., Rybicki, K., Gromadzki, M., Mróz, M.
Publikováno v:
Acta Astronomica 73 (2023) 105
We present the OGLE collection of delta Scuti stars in the Large Magellanic Cloud and in its foreground. Our dataset encompasses a total of 15 256 objects, constituting the largest sample of extragalactic delta Sct stars published so far. In the case
Externí odkaz:
http://arxiv.org/abs/2309.15147
Autor:
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.
Publikováno v:
Acta Astronomica, vol 73, no 1, p. 1-19, July 2023
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, co
Externí odkaz:
http://arxiv.org/abs/2309.06012
Autor:
Oey, M. S., Castro, N., Renzo, M., Vargas-Salazar, I., Suffak, M. W., Ratajczak, M., Monnier, J. D., Szymanski, M. K., Phillips, G. D., Calvet, N., Chiti, A., Micheva, G., Rasmussen, K. C., Townsend, R. H. D.
We present 18 years of OGLE photometry together with spectra obtained over 12 years, revealing that the early Oe star AzV 493 shows strong photometric (Delta I < 1.2 mag) and spectroscopic variability with a dominant, 14.6-year pattern and ~40-day os
Externí odkaz:
http://arxiv.org/abs/2301.11433