P
P. Pietrukowicz
Researcher at University of Warsaw
Publications - 287
Citations - 9671
P. Pietrukowicz is an academic researcher from University of Warsaw. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 46, co-authored 264 publications receiving 8854 citations. Previous affiliations of P. Pietrukowicz include Polish Academy of Sciences & Pontifical Catholic University of Chile.
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Journal ArticleDOI
Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way
Thomas Bensby,Sofia Feltzing,Andrew Gould,Andrew Gould,Andrew Gould,Jennifer C. Yee,Jennifer A. Johnson,Martin Asplund,Jorge Melendez,Sara Lucatello,L. M. Howes,Andrew McWilliam,Andrzej Udalski,Michał K. Szymański,Igor Soszyński,Radosław Poleski,Radosław Poleski,A. Wyrzykowski,Krzysztof Ulaczyk,Krzysztof Ulaczyk,S. Kozlowski,P. Pietrukowicz,Jan Skowron,P. Mróz,J. M. Pawlak,Fumio Abe,Yuichiro Asakura,Aparna Bhattacharya,Ian A. Bond,David P. Bennett,Yuki Hirao,Masayuki Nagakane,Naoki Koshimoto,Takahiro Sumi,Daisuke Suzuki,P. J. Tristram +35 more
TL;DR: In this paper, a detailed elemental abundance study of 90 F and G dwarfs, turn-off, and subgiant stars in the Galactic bulge has been presented, based on high-resolution spectra acquired during gravitational microlensing events.
Journal ArticleDOI
Deciphering the 3D structure of the old Galactic bulge from the OGLE RR Lyrae stars
P. Pietrukowicz,Szymon Kozłowski,Jan Skowron,Igor Soszyński,Andrzej Udalski,Radosław Poleski,L. Wyrzykowski,Michał K. Szymański,Grzegorz Pietrzyński,K. Ulaczyk,P. Mróz,D. M. Skowron,M. Kubiak +12 more
TL;DR: In this paper, the authors analyzed a sample of 27,258 fundamental-mode RR Lyrae variable stars (type RRab) detected recently toward the Galactic bulge by the Optical Gravitational Lensing Experiment (OGLE) survey and showed that their spatial distribution has the shape of a triaxial ellipsoid with an major axis located in the Galactic plane and inclined at an angle of i=20+/-3 deg to the Sun-GC line of sight.
Journal ArticleDOI
Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way
Thomas Bensby,Sofia Feltzing,Andrew Gould,Jennifer C. Yee,Jennifer A. Johnson,Martin Asplund,Jorge Melendez,S. Lucatello,L. M. Howes,Andrew McWilliam,Andrzej Udalski,Michał K. Szymański,Igor Soszyński,Radosław Poleski,Łukasz Wyrzykowski,K. Ulaczyk,S. Kozlowski,P. Pietrukowicz,Jan Skowron,P. Mróz,Michał Pawlak,Fumio Abe,Yuichiro Asakura,A. Bhattacharya,Ian A. Bond,David P. Bennett,Y. Hirao,M. Nagakane,N. Koshimoto,Takahiro Sumi,Daisuke Suzuki,P. J. Tristram +31 more
TL;DR: A detailed elemental abundance study of 90 F and G dwarfs, turn-off and subgiant stars in the Galactic bulge has been performed in this paper, and the results strengthen the observational evidence that support the idea of a secular origin for the galactic bulge, formed out of the other main Galactic stellar populations present in the central regions of our Galaxy.
Journal ArticleDOI
Spitzer as a Microlens Parallax Satellite: Mass Measurement for the OGLE-2014-BLG-0124L Planet and its Host Star
Andrzej Udalski,Jennifer C. Yee,Andrew Gould,Sean Carey,Wei Zhu,Jan Skowron,Szymon Kozłowski,Radosław Poleski,Radosław Poleski,P. Pietrukowicz,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Michał K. Szymański,P. Mróz,Igor Soszyński,Krzysztof Ulaczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,C. Han,S. Calchi Novati,R. W. Pogge +20 more
TL;DR: In this article, the authors combine Spitzer and ground-based observations to measure the microlens parallax vector π_E, and thus the mass and distance of OGLE-2014-BLG-0124L, making it the first microlensing planetary system with a space-based measurement.
Journal ArticleDOI
A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge
David P. Bennett,V. Batista,Ian A. Bond,C. S. Bennett,Daisuke Suzuki,J. P. Beaulieu,Andrzej Udalski,J. Donatowicz,Fumio Abe,C. S. Botzler,M. Freeman,D. Fukunaga,Akihiko Fukui,Yoshitaka Itow,N. Koshimoto,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,S. Namba,Kouji Ohnishi,Nicholas J. Rattenbury,To. Saito,Denis J. Sullivan,Takahiro Sumi,Winston L. Sweatman,P. J. Tristram,N. Tsurumi,K. Wada,P. C. M. Yock,Michael D. Albrow,Etienne Bachelet,Stephane Brillant,J. A. R. Caldwell,Arnaud Cassan,Andrew A. Cole,E. Corrales,C. Coutures,S. Dieters,D. Dominis Prester,P. Fouque,J. G. Greenhill,Keith Horne,J.-R. Koo,D. Kubas,J. B. Marquette,R. M. Martin,J. W. Menzies,Kailash C. Sahu,Joachim Wambsganss,Andrew Williams,M. Zub J. Y. Choi,Darren L. DePoy,Subo Dong,B. S. Gaudi,Andrew Gould,C. Han,Calen B. Henderson,D. McGregor,C.-U. Lee,R. W. Pogge,In-Gu Shin,Jennifer C. Yee,M. K. Szymaski,Jan Skowron,R. Poleski,S. Kozowski,L. Wyrzykowski,M. Kubiak,P. Pietrukowicz,G. Pietrzyski,I. Soszyski,K. Ulaczyk,Yiannis Tsapras,R. A. Street,Martin Dominik,D. M. Bramich,P. Browne,M. Hundertmark,N. Kains,Colin Snodgrass,Iain A. Steele,I. Dékány,Oscar A. Gonzalez,D. Heyrovsky,Ryo Kandori,Eamonn Kerins,P. W. Lucas,Dante Minniti,Takahiro Nagayama,Marina Rejkuba,Annie C. Robin,R. Saito +92 more
TL;DR: In this article, the authors presented the first microlensing candidate for a free-floating exoplanet-exomoon system, MOA-2011-BLG-262, with a primary lens mass of M_host ~ 4 Jupiter masses hosting a sub-Earth mass moon.