Search for magnetic fields in the symbiotic and VV Cephei variables
Journal Article
·
· Astrophys. J.; (United States)
The McDonald Observatory's 2.7 m photoelectric analyzer was used to examine five symbiotic and VV Cephei variables for the presence of coherent longitudinal fields. Repeated observations of magnetic Ap stars indicates an absolute sensitivity of +- 100--200 gauss. To this level, no new evidence is found supporting the reported kilogauss fields on the quiescent symbiotics AG Pegasi and EG Andromedae, nor for the VV Cephei stars VV Cephei and WY Geminorum, contrary to extant photographic determinations. Observations of CH Cygni following its 1977 eruption also yielded null results. The lack of significant line broadening correlated with effective z-values further rules out the presence of large transverse components.
- Research Organization:
- Department of Astronomy, University of Texas at Austin
- OSTI ID:
- 6236803
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 262:1; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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