We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Magnetic stars with wide depressions in the continuum. 1. The Ap star with strong silicon lines HD5601.
- Authors
Romanyuk, I.; Kudryavtsev, D.; Semenko, E.; Moiseeva, A.
- Abstract
Based on observations with the 6-m SAO RAS telescope, we have found that chemically peculiar star with a large depression of the continuum at λ5200 Å and strengthened silicon lines in the spectrum has a strong magnetic field. The longitudinal field component B has a negative polarity and varies from −300 G to −2000 G with a period of 1.756 days. Photometric variations of brightness take place with the same period. We determined the variability of the radial velocity at times of about tens of years pointing to a possible binarity of the object. We have built a magnetic model of this star, determined the inclination angles of the rotation axis to the line of sight i = 20° and of the dipole axis to the rotation axis β = 116°, and the field strength at the pole is B = 10 kG. We carried out a chemical composition analysis and found a lack of helium for almost an order of magnitude, some overabundance of silicon and metal elements for more than an order of magnitude, particularly, cobalt for three orders of magnitude.
- Subjects
MAGNETIC stars; CONTINUUM mechanics; ASTRONOMICAL observations; STELLAR magnetic fields; PHOTOMETRY
- Publication
Astrophysical Bulletin, 2016, Vol 71, Issue 4, p447
- ISSN
1990-3413
- Publication type
Article
- DOI
10.1134/S1990341316040076