Discovery of two new bright magnetic B stars: i Car and Atlas
arXiv:1508.06784 · doi:10.1093/mnrasl/slv128
Abstract
The BRITE (BRIght Target Explorer) constellation of nano-satellites performs seismology of bright stars via high precision photometry. In this context, we initiated a high resolution, high signal-to-noise, high sensitivity, spectropolarimetric survey of all stars brighter than V=4. The goal of this survey is to detect new bright magnetic stars and provide prime targets for both detailed magnetic studies and asteroseismology with BRITE. Circularly polarised spectra were acquired with Narval at TBL (France) and HarpsPol at ESO in La Silla (Chile). We discovered two new magnetic B stars: the B3V star i Car and the B8V component of the binary star Atlas. Each star was observed twice to confirm the magnetic detections and check for variability. These bright magnetic B stars are prime targets for asteroseismology and for flux-demanding techniques, such as interferometry.
accepted in MNRAS Letters, 5 pages, 3 figures
References in corpus (7)
- BRITE-Constellation: nanosatellites for precision photometry of bright stars
- The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets
- An asteroseismic study of the beta Cephei star theta Ophiuchi: constraints on global stellar parameters and core overshooting
- Multisite spectroscopic seismic study of the beta Cep star V2052 Oph: inhibition of mixing by its magnetic field
- Impact of rotation on stochastic excitation of gravity and gravito-inertial waves in stars
- Angular momentum transport by stochastically excited oscillations in rapidly rotating massive stars
- Search for magnetic fields in particle-accelerating colliding-wind binaries