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pro vyhledávání: '"J.S. Nichols"'
Akademický článek
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Akademický článek
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Akademický článek
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Autor:
O. Preuss, Y. Fremat, H.F. Henrichs, J.S. Nichols, A. H. Tijani, M. Floquet, V. C. Geers, A. M. Hubert, Slobodan Jankov, C. Neiner
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2003, 411, pp.565
Astronomy & Astrophysics, 411, 565-579. EDP Sciences
Astronomy and Astrophysics-A&A, EDP Sciences, 2003, 411, pp.565
Astronomy & Astrophysics, 411, 565-579. EDP Sciences
V 2052 Oph is a β Cep star with v sini ∼ 60 km s −1 . The behavior of its stellar wind was studied in the ultraviolet wavelength region with the IUE satellite. It revealed periodic variations in the equivalent widths (EW) of the resonance lines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f080fe7e9c6b6af9668eab9780d36d49
https://doi.org/10.1051/0004-6361:20031342
https://doi.org/10.1051/0004-6361:20031342
Autor:
James E. Neff, D. A. Bohlender, Y. Jiang, Karl D. Gordon, H.F. Henrichs, Karen S. Bjorkman, I. Kolka, J. Telting, Douglas O'Neal, Nancy D. Morrison, J.A. de Jong, B. Scheers, Lex Kaper, Gary J Hill, J.S. Nichols, H. Cao
Publikováno v:
Astronomy and Astrophysics
Astronomy and Astrophysics, 368, 601-621. EDP Sciences
Astronomy & Astrophysics, 368, 601-621. EDP Sciences
Astronomy and Astrophysics, 368, 601-621. EDP Sciences
Astronomy & Astrophysics, 368, 601-621. EDP Sciences
We present the results of an extensive observing campaign on the O7.5 III star Persei. The UV obser- vations were obtained with the International Ultraviolet Explorer. Per was monitored continuously in October 1994 during 10 days at ultraviolet and v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb9bd8dd584a9bb5f81b0a2850b0c263
https://doi.org/10.1051/0004-6361:20000570
https://doi.org/10.1051/0004-6361:20000570
Autor:
P.M. Veen, C. Catala, Gregg A. Wade, L. Kaper, S. L. S. Shorlin, H.F. Henrichs, J.S. Nichols, J.A. de Jong, J.F. Donati
Publikováno v:
International Astronomical Union Colloquium. 175:324-329
New circular spectropolarimetric observations of the B1 IIIe star β Cep (υsini = 25 km s−1) show a sinusoidally varying weak longitudinal magnetic field (~ 200 G peak-to-peak). The period corresponds to the 12 day period in the stellar wind varia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2b13077215adbc65b3d88588e612d78
https://doi.org/10.1017/s0252921100056074
https://doi.org/10.1017/s0252921100056074
Akademický článek
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Autor:
Vincent Geers, S. L. S. Shorlin, K.L.J. Rygl, A. Tijani, C. Neiner, J.S. Nichols, K. Wiersema, E. Damen, B. Plaggenborg, C. Catala, J.-F. Donati, Gregg A. Wade, P.M. Veen, A. Talavera, J.A. de Jong, Huib F. Henrichs, Lex Kaper, R.S. Schnerr, Eva Verdugo, Grant M. Hill
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2013, 555, pp.A46. ⟨10.1051/0004-6361/201321584⟩
Astronomy & Astrophysics, 555. EDP Sciences
Astronomy and Astrophysics-A&A, EDP Sciences, 2013, 555, pp.A46. ⟨10.1051/0004-6361/201321584⟩
Astronomy and Astrophysics-A&A, 2013, 555, pp.A46. ⟨10.1051/0004-6361/201321584⟩
Astronomy & Astrophysics, 555. EDP Sciences
Astronomy and Astrophysics-A&A, EDP Sciences, 2013, 555, pp.A46. ⟨10.1051/0004-6361/201321584⟩
Although the star itself is not He enriched, the periodicity and the variability in the UV wind lines of the pulsating B1 IV star beta Cep are similar to what is observed in magnetic He-peculiar B stars, suggesting that beta Cep is magnetic. We searc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::783b1ef09ffe43210452f24567fd5bf3
https://hal.science/hal-02526388
https://hal.science/hal-02526388
Long- and short-term variability on O-star winds. I. Time series of UV spectra for 10 bright O stars
Publikováno v:
Astronomy and Astrophysics Supplement Series, 116, 257-287. EDP Sciences
An atlas of time series of ultraviolet spectra is presented for 10 bright O stars. The spectra were obtained with the International Ultraviolet Explorer during seven observing campaigns lasting several days over a period of 6 years. The UV P Cygni li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7aa270be7a836a897ffe0f7ce97d3fc
https://hdl.handle.net/11245/1.126985
https://hdl.handle.net/11245/1.126985
Publikováno v:
Symposium - International Astronomical Union. 162:517-529
The search for the cause of the discrete absorption components (DACs) in P Cygni profiles in UV spectra of O stars continues: pulsation, rotation and magnetic fields are probably all in various degrees important. We highlight some key observations wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3e9124a0338772f334df91fab32416f
https://doi.org/10.1017/s0074180900215787
https://doi.org/10.1017/s0074180900215787