Magnetic field measurements of Ap stars. Discovery of a strong magnetic field in HD 18610
- Author(s)
- Christian Stütz, Tanya A. Ryabchikova, Werner Wolfgang Weiss
- Abstract
HD 18610 was included in our project on abundance determination of rapidly oscillating (roAp) and non-oscillating (noAp) cool chemically peculiar stars. Already a preliminary investigation of the raw spectra indicated the presence of an intense magnetic field which was confirmed by a more detailed analysis. To determine the magnetic field strength we primarily used the Fe n line at 6149.26 A°, a strong line which is split in a anomalous Zeeman doublet. HD 18610 is a Cr-Eu-Sr non-pulsating Ap star with a Teff and log g typical for roAp stars. The classification of this star as a CP2 star (Preston 1974) was confirmed with ?a photometry by Maitzen & Vogt (1983). In the present investigation we derived a mean magnetic field modulus of |B| = 5 700 ‘ 200 G.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Russian Academy of Sciences
- Journal
- Astronomy & Astrophysics
- Volume
- 402
- Pages
- 729-731
- No. of pages
- 3
- ISSN
- 0004-6361
- Publication date
- 2003
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/ebd7e2ef-6adf-4dd3-b7a2-580ab8a6354d