Catalogue of averaged stellar effective magnetic fields. I. Chemically peculiar A and B type stars
Abstract
This paper presents the catalogue and the method of determination of averaged quadratic effective magnetic fields < B_e > for 596 main sequence and giant stars. The catalogue is based on measurements of the stellar effective (or mean longitudinal) magnetic field strengths B_e, which were compiled from the existing literature.
We analysed the properties of 352 chemically peculiar A and B stars in the catalogue, including Am, ApSi, He-weak, He-rich, HgMn, ApSrCrEu, and all ApSr type stars. We have found that the number distribution of all chemically peculiar (CP) stars vs. averaged magnetic field strength is described by a decreasing exponential function. Relations of this type hold also for stars of all the analysed subclasses of chemical peculiarity. The exponential form of the above distribution function can break down below about 100 G, the latter value representing approximately the resolution of our analysis for A type stars. Table A.1 and its references are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/407/631 and Tables 3 to 9 are only available in electronic form at http://www.edpsciences.org- Publication:
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Astronomy and Astrophysics
- Pub Date:
- August 2003
- DOI:
- 10.1051/0004-6361:20030741
- arXiv:
- arXiv:astro-ph/0307356
- Bibcode:
- 2003A&A...407..631B
- Keywords:
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- stars: magnetic fields;
- stars: fundamental parameters;
- Astrophysics
- E-Print:
- 35 pages, 9 figures, Astron. Astrophys. (2003) in print