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Discovery of a magnetic field in $��$ Pup
- Publication Year :
- 2017
- Publisher :
- arXiv, 2017.
-
Abstract
- $��$ Pup is a $��$ Scuti F2 pulsator, known to host a main radial mode as well as non-radial pulsations, with chemical peculiarities typical of evolved Am stars. We present high-precision spectropolarimetric observations of this star, obtained with ESPaDOnS at the Canada France Hawaii Telescope (CFHT) in the frame of the BRITE spectropolarimetric survey. A magnetic field is clearly detected in $��$ Pup, with a longitudinal field strength below 1 G. This makes $��$ Pup the second known magnetic $��$ Scuti discovered, after HD 188774, and a possible cool evolved counterpart of the recently discovered ultra-weakly magnetic Am family.<br />4 pages, 2 figures, accepted in MNRAS Letters
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi...........ebbbbc780b518bfb63018261317c1969
- Full Text :
- https://doi.org/10.48550/arxiv.1702.01621