6533b7dbfe1ef96bd127092a
RESEARCH PRODUCT
A rapid H? change in X Persei
M. J. CoeM. J. GorrodJ. KastnerJuan FabregatL. Spinogliosubject
PhysicsX-ray astronomySpace and Planetary ScienceBe starStellar rotationAstronomyAstronomy and AstrophysicsH-alphaAstrophysicsEmission spectrumVariable starEquivalent widthMain sequencedescription
A trend of decreasing Hα emission over a period of thirty minutes is apparent in a series of spectra of X Persei taken on 31 December, 1987. This change appears to be astrophysical in origin and it indicates an anomalous state for X Persei that may be linked to its transition from a Be star to a normal B star, which occurred sometime between March 1988 and November 1990.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-01-01 | Astrophysics and Space Science |