Search Results - "Kolaczkowski, Z."

The eclipsing LMC star OGLE 05155332−6925581: a clue for double periodic variables by Mennickent, R. E., Kołaczkowski, Z., Michalska, G., Pietrzyński, G., Gallardo, R., Cidale, L., Granada, A., Gieren, W.

“…We investigate the nature of OGLE 05155332−6925581, one of the brightest members of the enigmatic group of double periodic variables (DPVs) recently found in…”
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A distance to the Large Magellanic Cloud that is precise to one per cent by Pietrzyński, G., Graczyk, D., Gallenne, A., Gieren, W., Thompson, I. B., Pilecki, B., Karczmarek, P., Górski, M., Suchomska, K., Taormina, M., Zgirski, B., Wielgórski, P., Kołaczkowski, Z., Konorski, P., Villanova, S., Nardetto, N., Kervella, P., Bresolin, F., Kudritzki, R. P., Storm, J., Smolec, R., Narloch, W.

“…In the era of precision cosmology, it is essential to determine the Hubble constant empirically with an accuracy of one per cent or better 1 . At present, the…”
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Frequency analysis of Cepheids in the Large Magellanic Cloud: new types of classical Cepheid pulsators by Moskalik, P., Kołaczkowski, Z.

“…We have performed a detailed systematic search for multiperiodicity in the Population I Cepheids of the Large Magellanic Cloud. In this process, we have…”
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A CCD search for variable stars in the open cluster NGC 6611 by Michalska, G, Kołaczkowski, Z, Leiton, R, Szewczyk, O, Kinemuchi, K, Kalari, V M

“…ABSTRACT We present the results of the UBVIC variability survey in the young open cluster NGC 6611 based on observations obtained during 34 nights spanning one…”
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Interacting binaries W Serpentids and double periodic variables by Mennickent, R. E., Otero, S., Kołaczkowski, Z.

“…W Serpentids and double periodic variables (DPVs) are candidates for close interacting binaries in a non-conservative evolutionary stage; while W Serpentids…”
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Photometry of Two Unusual A Supergiant Systems in the Small Magellanic Cloud by Mennickent, R. E., Smith, M. A., Kołaczkowski, Z., Pietrzyński, G., Soszyński, I.

“…We present multiwavelength broadband photometry and V V , I I time-resolved photometry for two variable bright stars in the SMC, OGLE004336.91-732637.7…”
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Spectroscopic survey of γ Doradus stars – I. Comprehensive atmospheric parameters and abundance analysis of γ Doradus stars by Kahraman Aliçavuş, F., Niemczura, E., De Cat, P., Soydugan, E., Kołaczkowski, Z., Ostrowski, J., Telting, J. H., Uytterhoeven, K., Poretti, E., Rainer, M., Suárez, J. C., Mantegazza, L., Kilmartin, P., Pollard, K. R.

“…We present a spectroscopic survey of known and candidate γ Doradus stars. The high-resolution, high signal-to-noise spectra of 52 objects were collected by…”
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Gaia16apd – a link between fast and slowly declining type I superluminous supernovae by Kangas, T., Blagorodnova, N., Mattila, S., Lundqvist, P., Fraser, M., Burgaz, U., Cappellaro, E., Carrasco Martínez, J. M., Elias-Rosa, N., Hardy, L. K., Harmanen, J., Hsiao, E. Y., Isern, J., Kankare, E., Kołaczkowski, Z., Nielsen, M. B., Reynolds, T. M., Rhodes, L., Somero, A., Stritzinger, M. D., Wyrzykowski, Ł.

“…Abstract We present ultraviolet (UV), optical and infrared photometry and optical spectroscopy of the type Ic superluminous supernova (SLSN) Gaia16apd (=SN…”
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The SMC B-type supergiant AzV322: a g-mode pulsator with a circumstellar disc by Mennickent, R. E., Kołaczkowski, Z., Soszyński, I., Cabezas, M., Garrido, H. E.

“…Abstract We present a photometric and spectroscopic study of AzV322, an emission line object located in the Small Magellanic Cloud previously classified…”
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Candidates for non-pulsating stars located in the Cepheid instability strip in the Large Magellanic Cloud based on Strömgren photometry by Narloch, Weronika, Pietrzyński, G, Kołaczkowski, Z, Smolec, R, Górski, M, Kubiak, M, Udalski, A, Soszyński, I, Graczyk, D, Gieren, W, Karczmarek, P, Zgirski, B, Wielgórski, P, Suchomska, K, Pilecki, B, Taormina, M, Kałuszyński, M

“…We present candidates for non-pulsating stars lying in the classical Cepheid instability strip based on the Optical Gravitational Lensing Experiment (OGLE)…”
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Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars by Niemczura, E., Polińska, M., Murphy, S. J., Smalley, B., Kołaczkowski, Z., Jessen-Hansen, J., Uytterhoeven, K., Lykke, J. M., Triviño Hage, A., Michalska, G.

“…Abstract We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic…”
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Physical parameters and evolutionary route for the Large Magellanic Cloud interacting binary OGLE 05155332−6925581 by Garrido, H. E., Mennickent, R. E., Djuraševi, G., Ko aczkowski, Z., Niemczura, E., Mennekens, N.

“…We analyse multicolour light curves and high-resolution optical spectroscopy of the eclipsing binary and double periodic variable (DPV) OGLE 05155332−6925581…”
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A cyclic bipolar wind in the interacting binary V 393 Scorpii by Mennickent, R. E., Kołaczkowski, Z., Djurasevic, G., Niemczura, E., Diaz, M., Curé, M., Araya, I., Peters, G. J.

“…ABSTRACT V 393 Scorpii is a double periodic variable characterized by a relatively stable non‐orbital photometric cycle of 253 d. Mennickent et al. argue for…”
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The evolution stage and massive disc of the interacting binary V 393 Scorpii by Mennickent, R. E., Djurašević, G., Kołaczkowski, Z., Michalska, G.

“…V 393 Scorpii is a bright Galactic Double Periodic Variable showing a long photometric cycle of ≈253 d. We present new VIJK photometric time series for V 393…”
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The evolution stage and massive disc of the interacting binary V393 Scorpii by Mennickent, R. E, Djurasevic, G, Koaczkowski, Z, Michalska, G

“…V393 Scorpii is a bright Galactic Double Periodic Variable showing a long photometric cycle of [asymptotically =]253d. We present new VIJK photometric time…”
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The quasi-resonant variability of the massive LMC system BI 108 by Ko aczkowski, Z., Mennickent, R. E., Rivinius, T., Pietrzy ski, G.

“…The early B supergiant Large Magellanic Cloud (LMC) star BI 108 is photometrically variable with a unique light curve; two strong periods are present in an…”
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The 2003–2004 multisite photometric campaign for the β Cephei and eclipsing star 16 (EN) Lacertae with an appendix on 2 Andromedae, the variable comparison star by Jerzykiewicz, M., Handler, G., Daszyńska-Daszkiewicz, J., Pigulski, A., Poretti, E., Rodríguez, E., Amado, P. J., Kołaczkowski, Z., Uytterhoeven, K., Dorokhova, T. N., Dorokhov, N. I., Lorenz, D., Zsuffa, D., Kim, S.-L., Bourge, P.-O., Acke, B., De Ridder, J., Verhoelst, T., Drummond, R., Movchan, A. I., Lee, J.-A., Stȩślicki, M., Molenda-Żakowicz, J., Garrido, R., Kim, S.-H., Michalska, G., Paparó, M., Antoci, V., Aerts, C.

“…A multisite photometric campaign for the β Cephei and eclipsing variable 16 Lacertae is reported. 749 h of high-quality differential photoelectric Strömgren,…”
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A study of the interacting binary V393 Scorpii by Mennickent, R. E., Kołaczkowski, Z., Graczyk, D., Ojeda, J.

“…We present high-resolution J-band spectroscopy of V393 Sco obtained with the Cryogenic High-Resolution Infrared Echelle Spectrograph (CRIRES) at the ESO…”
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Preliminary Photometric Results for the 2003 Eclipse of Ee Cep by Mikolajewski, M, Galan, C, Gazeas, K, Niarchos, P, Zola, S, Kurpinska-Winiarska, M, Winiarski, M, Majewska, A, Siwak, M, Drahus, M, Waniak, W, Pigulski, A, Michalska, G, Kolaczkowski, Z, Tomov, T, Gromadzki, M, Graczyk, D, Osiwala, J, Majcher, A, Hajduk, M, Cikala, M, Zajczyk, A, Kolev, D, Dimitrov, D, Semkov, E, Bilkina, B, Dapergolas, A, Bellas-Velidis, L, Csak, B, Gere, B, Nemeth, P, Apostolovska, G

“…We report multicolour photometric observations of the 2003 eclipse of the long-period (5.6 yr) eclipsing binary EE Cep. Measurements were obtained with ten…”
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Unusual high-frequency oscillations in the Kepler δ Scuti star KIC 4840675 by Balona, L. A., Breger, M., Catanzaro, G., Cunha, M. S., Handler, G., Kołaczkowski, Z., Kurtz, D. W., Murphy, S., Niemczura, E., Paparó, M., Smalley, B., Szabó, R., Uytterhoeven, K., Christiansen, J. L., Uddin, K., Stumpe, M. C.

“…Abstract We show that the star KIC 4840675 observed by Kepler is composed of three stars with a rapidly rotating A-type star and two solar-type fainter…”
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