Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Ewa Niemczura"'
Autor:
Ewa Niemczura, Stefan Hümmerich, Fiorella Castelli, Ernst Paunzen, Klaus Bernhard, Franz-Josef Hambsch, Krzysztof Hełminiak
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
Abstract HD 66051 is an eclipsing system with an orbital period of about 4.75 d that exhibits out-of-eclipse variability with the same period. New multicolour photometric observations confirm the longevity of the secondary variations, which we interp
Externí odkaz:
https://doaj.org/article/667dc2bbee254db383324e8ea05d2b72
Autor:
S Drew Chojnowski, Swetlana Hubrig, David L Nidever, Ewa Niemczura, Jonathan Labadie-Bartz, Gautier Mathys, Sten Hasselquist
Despite the Universe containing primordial thorium (Th) of sufficient abundance to appear in stellar spectra, detection of Th has to date been tentative and based on just a few weak and blended lines. Here, we present convincing evidence not only for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82c79433854998dbf80cbca6cf047a86
http://arxiv.org/abs/2304.12938
http://arxiv.org/abs/2304.12938
Autor:
S Drew Chojnowski, Swetlana Hubrig, Jonathan Labadie-Bartz, Thomas Rivinius, Markus Schöller, Ewa Niemczura, David L Nidever, Amelia M Stutz, C A Hummel
We report the discovery of a new example of the rare class of highly magnetized, rapidly rotating, helium enhanced, early B stars that produce anomalously wide hydrogen emission due to a centrifugal magnetosphere (CM). The star is Trumpler 16-26, a B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::665b17b8568da42ca11bca1135f5a02f
http://arxiv.org/abs/2208.12722
http://arxiv.org/abs/2208.12722
Autor:
Gerald Handler, Stefan Wallner, Anna Gütl-Wallner, Martin Vaňko, Ewa Niemczura, Theodor Pribulla, Klaus Bernhard, Tomasz Różański, Ernst Paunzen, Werner W. Weiss, Jaymie M. Matthews, Przemysław Walczak, Miroslav Fedurco, Stefan Hümmerich, Thomas Kallinger
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 485:4247-4259
The magnetic chemically peculiar (Ap/CP2) star 21 Com has been extensively studied in the past, albeit with widely differing and sometimes contradictory results, in particular concerning the occurrence of short term variability between about 5 to 90
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd8f5c87aec5304a329d449089ddffd8
https://doi.org/10.1093/mnras/stz413
https://doi.org/10.1093/mnras/stz413
Autor:
Richard Monier, Ewa Niemczura
Publikováno v:
Research Notes of the AAS. 6:99
Evidence is presented that HD 4065A is a newly discovered HgMn star. The Hg ii line at 3983.93 Å is present in two spectra acquired with the High Resolution Spectrograph mounted behind the South African Large Telescope and separated by about 2 month
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::169590c95ef7a10419a155fbc34c6641
https://doi.org/10.3847/2515-5172/ac6f62
https://doi.org/10.3847/2515-5172/ac6f62
Publikováno v:
Contributions of the Astronomical Observatory Skalnaté Pleso. 50
HD 66051 (V414 Pup) is an eclipsing and spectroscopic double-lined binary, hosting two chemically peculiar stars: a highly peculiar B star as primary and an Am star as secondary. It also shows out-of-eclipse variability that is due to chemical spots.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb182b00044c0c990a3055ed0c9133b0
https://doi.org/10.31577/caosp.2020.50.2.621
https://doi.org/10.31577/caosp.2020.50.2.621
Autor:
D. Drobek, Ewa Niemczura, Przemysław Walczak, Klaus Bernhard, Simon J. Murphy, Ernst Paunzen, Stefan Hümmerich
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 474:2467-2478
The advent of space-based photometry provides the opportunity for the first precise characterizations of variability in Mercury-Manganese (HgMn/CP3) stars, which might advance our understanding of their internal structure. We have carried out a spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dc26d9647932dc3b7f1a9de9ee47c8f
https://doi.org/10.1093/mnras/stx2974
https://doi.org/10.1093/mnras/stx2974
Autor:
Claudia Travaglio, Andreea S. Font, Maria Lugaro, Selma E. de Mink, Jacqueline den Hartogh, Artemis Spyrou, P. Gina Isar, Ewa Niemczura, Remo Collet, Birgitta Nordström, Panagiota Papakonstantinou, Marialuisa Aliotta, Sanjana Curtis, W. Chantereau, Mariya Yavahchova, Friedrich-Karl Thielemann, Christine V. Hampton, Thomas Rauscher, A. Ćiprijanović, Claudia Lederer-Woods, Nalan Özkan, Etienne A. Kaiser, Anu Kankainen, Chiaki Kobayashi, Marcella Di Criscienzo, Aparna Venkatesan, Sophie Van Eck
Publikováno v:
Springer proceedings in physics, 219
Springer Proceedings in Physics ISBN: 9783030138752
Springer Proceedings in Physics ISBN: 9783030138752
Female role models reduce the impact on women of stereotype threat, i.e. of being at risk of conforming to a negative stereotype about one’s social, gender, or racial group (Fine in Delusion of Gender. W.W. Norton & Co. NY, p. 36, 2010 [1]; St
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1890dcfa772122cec903470b61063cbb
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296706
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296706
Asteroseismology of massive stars with the TESS mission: the runaway β Cep pulsator PHL 346 = HN Aqr
Autor:
Zhao Guo, Sergio Simón-Díaz, J. Pascual-Granado, Dominic M. Bowman, George R. Ricker, Filiz Kahraman Alicavus, Cole Johnston, M. G. Pedersen, Derek Buzasi, David Kilkenny, Thomas Kallinger, Peter De Cat, G. M. Mirouh, Tomasz Różański, Kosmas Gazeas, Ehsan Moravveji, S. Chowdhury, Jadwiga Daszyńska-Daszkiewicz, Gerald Handler, Norbert Przybilla, Ewa Niemczura, Andreas Irrgang, Roland Vanderspek, Andrzej Pigulski
Publikováno v:
The Astrophysical Journal
Digital.CSIC. Repositorio Institucional del CSIC
instname
Digital.CSIC. Repositorio Institucional del CSIC
instname
We report an analysis of the first known β Cep pulsator observed by the Transiting Exoplanet Survey Satellite (TESS) mission, the runaway star PHL 346 = HN Aqr. The star, previously known as a singly periodic pulsator, has at least 34 oscillation mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c1bd97830e53c3e7fba6a2f3610079b
http://hdl.handle.net/10261/190649
http://hdl.handle.net/10261/190649
Publikováno v:
Research Notes of the AAS. 4:48
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4721cb71d0d85036b6a8591c370cfa0
https://doi.org/10.3847/2515-5172/ab8643
https://doi.org/10.3847/2515-5172/ab8643