Discovery of a strong magnetic field in the rapidly rotating B2Vn star HR 7355
We report on the detection of a strong, organized magnetic field in the helium-variable early B-type star HR 7355 using spectropolarimetric data obtained with ESPaDOnS on CFHT by the MiMeS large program. We also present results from new V-band differential photometry obtained with the CTIO 0.9m tele...
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| Veröffentlicht in: | Proceedings of the International Astronomical Union 2010-07, Vol.6 (S272), p.204-205 |
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| container_issue | S272 |
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| container_title | Proceedings of the International Astronomical Union |
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| creator | Oksala, Mary E. Wade, Gregg A. Marcolino, Wagner L. F. Grunhut, Jason H. Bohlender, David Manset, Nadine Townsend, Richard H. D. |
| description | We report on the detection of a strong, organized magnetic field in the helium-variable early B-type star HR 7355 using spectropolarimetric data obtained with ESPaDOnS on CFHT by the MiMeS large program. We also present results from new V-band differential photometry obtained with the CTIO 0.9m telescope. We investigate the longitudinal field, using a technique called Least-Squares Deconvolution (LSD), and the rotational period of HR 7355. These new observations strongly support the proposal that HR 7355 harbors a structured magnetosphere similar to that in the prototypical helium-strong star, σ Ori E. |
| doi_str_mv | 10.1017/S1743921311010350 |
| format | Article |
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| subjects | Astronomy Astrophysics Contributed Papers Magnetic fields Star & galaxy formation Stars & galaxies |
| title | Discovery of a strong magnetic field in the rapidly rotating B2Vn star HR 7355 |
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