Discovery of a strong magnetic field in the rapidly rotating B2Vn star HR 7355

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Proceedings of the International Astronomical Union 2010-07, Vol.6 (S272), p.204-205
Hauptverfasser: Oksala, Mary E., Wade, Gregg A., Marcolino, Wagner L. F., Grunhut, Jason H., Bohlender, David, Manset, Nadine, Townsend, Richard H. D.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Astrophysics
Contributed Papers
Magnetic fields
Star & galaxy formation
Stars & galaxies
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921311010350