Abstract
Aims. We searched for massive stars with Balmer emission consistent with magnetically confined circumstellar material. Methods. Archival spectroscopic and photometric data were investigated. Results. HR 7355 is a formerly unknown He-strong star showing Balmer emission. At $V = 6.02$ mag, it is one of the brightest objects simultaneously showing anomalous helium absorption and hydrogen emission. Among similar objects, only σ Ori E has so far been subjected to any systematic analysis of the circumstellar material responsible for the emission. We argue that the double-wave photometric period of 0.52 d corresponds to the rotation period. In tandem with the high projected equatorial velocity, v sin i = 320 km s -1 , this short period suggests that HR 7355 is the most rapidly rotating He-strong star known to date; a class that was hitherto expected to host stars with slow to moderate rotation only.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
