- The determination of the rotation period and magnetic field geometry of the strongly magnetic roAp star HD 154708
- Monthly Notices of the Royal Astronomical Society
- Volume | Issue number
- 396 | 2
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Anton Pannekoek Institute for Astronomy (API)
We obtained 13 spectropolarimetric observations of the strongly magnetic rapidly oscillating Ap star HD 154708 over 3 months with the multimode instrument FORS 1, installed at the 8-m Kueyen telescope of the Very Large Telescope. These observations have been used for the determination of the rotation period of P = 5.3666 +/- 0.0007 d. Using stellar fundamental parameters and the longitudinal magnetic field phase curve, we briefly discuss the magnetic field geometry. The star is observed nearly pole-on and the magnetic field geometry can be described by a centred dipole with a surface polar magnetic field strength B-d between 26.1 and 28.8 kG and an inclination of the magnetic axis to the rotation axis in the range 22 degrees.5 to 35 degrees.5.
- go to publisher's site
- DOI: 10.1111/j.1365-2966.2009.14768.x; eprintid: arXiv:0903.2564
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