Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Gautier Mathys"'
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:
Swetlana Hubrig, Silva P. Järvinen, H. Adigozalzade, Ilya Ilyin, Viktor Khalack, Gautier Mathys
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2734-2743
High resolution spectropolarimetric observations of the strongly magnetic, super-slowly rotating rapidly oscillating Ap star HD166473 are used to investigate the implications of the presence of a variable strong magnetic field on the vertical and sur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37625ff2c7041bafaf27053f496e7398
https://doi.org/10.1093/mnras/staa2887
https://doi.org/10.1093/mnras/staa2887
The TESS space mission is producing superb data for asteroseismology, eclipsing binary stars, gyrochronology, and other fields of stellar astronomy where the data are variable light curves. We show that TESS data are excellent for astrophysical infer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59071cec5b4aa0b7ad2aa18126a77b7c
http://arxiv.org/abs/2003.14144
http://arxiv.org/abs/2003.14144
Autor:
J. Robrade, Gautier Mathys, Silva P. Järvinen, Markus Schöller, C. A. Hummel, S. Hubrig, D. W. Kurtz
The Bp star HD94660 is a single-lined spectroscopic binary. Some authors have suggested that the unseen companion of at least 2M_sun may be a compact object. We intend to study this multiple system in detail, especially to learn more about the so-far
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55bfb2d38686836e56f78e5eb700d51c
How magnetic fields contribute to the differentiation of the rotation rates of the Ap stars and affect the occurrence of non-radial pulsation in some of them are important open questions. Valuable insight can be gained into these questions by studyin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70686cad30d22491f1a115a2112b1561
Autor:
Markus Schöller, Gautier Mathys, D. O. Kudryavtsev, John D. Landstreet, Iosif I. Romanyuk, S. Hubrig, I. A. Yakunin, E. A. Semenko
Context. The Ap stars that rotate extremely slowly, with periods of decades to centuries, represent one of the keys to the understanding of the processes leading to the differentiation of stellar rotation. Aims. We characterise the variations of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ce91902730dbaa2ab5a5e03db40c7f8
Autor:
Gautier Mathys, Markus Schöller, D. O. Kudryavtsev, Swetlana Hubrig, Eugene Semenko, I. I. Romanyuk, I. A. Yakunin
Context. One of the keys to understanding the origin of the Ap stars and their significance in the general context of stellar astrophysics is the consideration of the most extreme properties displayed by some of them. In that context, HD 965 is parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fc0e64472a3aca7c5c4c7f2d4f3fa90
Autor:
D. O. Kudryavtsev, John D. Landstreet, Diane M. Pyper, I. I. Romanyuk, Gautier Mathys, Saul J. Adelman
Context. The existence of a significant population of Ap stars with very long rotation periods (up to several hundred years) has progressively emerged over the past two decades. However, only lower limits of the periods are known for most of them bec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::275b8233d05691f46f07df24f2c86bbc
Publikováno v:
Astronomische Nachrichten. 333:30-33
Hot cluster horizontal branch (HB) stars and field subdwarf B (sdB) stars are core helium burning stars that exhibit abundance anomalies that are believed to be due to atomic diffusion. Diffusion can be effective in these stars because they are slowl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d8275f1b3af2f42cc938d40b80693bc
https://doi.org/10.1002/asna.201111618
https://doi.org/10.1002/asna.201111618
Autor:
Margarida S. Cunha, R. Monier, Friedrich Kupka, Francis Leblanc, Jozef Ziznovsky, Ernst Paunzen, Olga Pintado, Gautier Mathys, Oleg Kochukhov, Nikolai Piskunov, Michael M. Dworetsky
Publikováno v:
Proceedings of the International Astronomical Union. 7:203-206
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8505ad964e63c813d68f14f3711fbfb
https://doi.org/10.1017/s1743921312002815
https://doi.org/10.1017/s1743921312002815