Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Th. Szeifert"'
Autor:
Franz-Josef Hambsch, Dietrich Baade, Otmar Stahl, Th. Szeifert, C. Agliozzo, Th. Rivinius, Jose H. Groh, Daniel Asmus, Andrea Mehner, Elizabeth S. Bartlett
To better understand the LBV phenomenon, we analyze multi-epoch and multi-wavelength spectra and photometry of R71. Pre-outburst spectra are analyzed with the radiative transfer code CMFGEN to determine the star's fundamental stellar parameters. Duri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6744e8999c78f8f08a98c3069af456a5
http://repositorio.unab.cl/xmlui/handle/ria/6202
http://repositorio.unab.cl/xmlui/handle/ria/6202
Autor:
Dimitar Sasselov, Th. Rivinius, Jason Grunhut, Véronique Petit, W. L. F. Marcolino, Rainer Kuschnig, Gregg A. Wade, J. M. Matthews, Werner W. Weiss, R. H. D. Townsend, Slavek M. Rucinski, Th. Szeifert, T. Kallinger, D. A. Bohlender, B.D. Guenther, A. F. J. Moffat, Jason F. Rowe
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 419:1610-1627
We report the discovery and analysis of a very strong magnetic field in the rapidly rotating early B-type star HR 5907, based on observations obtained as part of the Magnetism in Massive Stars (MiMeS) project. We infer a rotation period of 0.508276 +
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aab5a8b26359d8707bd46e177725fe2d
https://doi.org/10.1111/j.1365-2966.2011.19824.x
https://doi.org/10.1111/j.1365-2966.2011.19824.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 405:L46-L50
The B2Vn star HR 7355 is found to be a He-rich magnetic star. Spectropolarimetric data were obtained with FORS1 at UT2 on Paranal observatory to measure the disk-averaged longitudinal magnetic field at various phases of the presumed 0.52 d cycle. A v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c28a14ef5401a25b9d1a57b7d987bdb
https://doi.org/10.1111/j.1745-3933.2010.00856.x
https://doi.org/10.1111/j.1745-3933.2010.00856.x
Autor:
Th. Szeifert, J. Kovacs, B. Wolf, Werner Schmutz, Otmar Stahl, Andreas Kaufer, Th. Rivinius, I. Jankovics
Publikováno v:
Astronomy & Astrophysics. 375:54-69
We have extensively monitored the Luminous Blue Variable AG Car (HD 94910) spectroscopically. Our data cover the years 1989 to 1999. In this period, the star underwent almost a full S Dor cycle from visual minimum to maximum and back. Over several se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba2b3cc3a807eaa537bb207844ef1587
https://doi.org/10.1051/0004-6361:20010824
https://doi.org/10.1051/0004-6361:20010824
Autor:
Oleg Kochukhov, Dietrich Baade, Richard H. D. Townsend, S. Štefl, Th. Szeifert, Th. Rivinius, L. Barrera
The spectral and magnetic properties and variability of the B2Vnp emission-line magnetosphere star HR7355 were analyzed. The object rotates at almost 90% of the critical value, meaning it is a magnetic star for which oblateness and gravity darkening
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7a85ef2bc888b4b8a07cd02b46250f8
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-201882
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-201882
Publikováno v:
New Aspects of Magellanic Cloud Research ISBN: 9783540564324
During the past decade R 40 in the SMC has brightened in the visual range by about 0.5 magnitudes. Correlated with the brightening the spectral type has changed from B8Ia to A3Ia-O. This behaviour shows R 40 to be an LBV, the first one discovered in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb02ccc7d69037cba6d9eee4d767c503
https://doi.org/10.1007/3-540-56432-2_210
https://doi.org/10.1007/3-540-56432-2_210
Autor:
B. Wolf, Andreas Kaufer, H. Mandel, C. A. Gummersbach, Th. Szeifert, J. Kovacs, Th. Gang, Otmar Stahl
Publikováno v:
Pulsation, Rotation and Mass Loss in Early-Type Stars ISBN: 9780792330455
Galactic Luminous Blue Variables and A- and B-type supergiants were monitored spectroscopically with high resolution in wavelength and time. Line profile variations on different timescales are found.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad6fa3327385fc78e428f73d1c14db82
https://doi.org/10.1007/978-94-011-1030-3_147
https://doi.org/10.1007/978-94-011-1030-3_147
Publikováno v:
Symposium - International Astronomical Union. 162:532-533
Galactic Luminous Blue Variables and A- and B-type supergiants were monitored spectroscopically with high resolution in wavelength and time. Line profile variations on different timescales are found.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fa2769f79581764502cd0801bf6a902
https://doi.org/10.1017/s0074180900215805
https://doi.org/10.1017/s0074180900215805
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