Behaviour of the H-alpha Line of V404 CYG

Zurita, C.; Casares, J.
Referencia bibliográfica

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.: J. Paul, T. Montmerle, and E. Aubourg (CEA Saclay), meeting abstract.

Fecha de publicación:
12
1998
Número de autores
2
Número de autores del IAC
2
Número de citas
0
Número de citas referidas
0
Descripción
We present spectroscopy of the Hα emision line in the X-ray transient V4 04 Cyg. Along with the spectroscopy, simultaneus photometry was used in order t o renormalize the spectra to agree with the photometry, giving us spectrophotom etric data. We have found evidence to show the presence of flares in both the l ine and continuum on a time-scale less than 1 hr. Hα flux is not clearly correlated with continuum, and have a non-repeating night to night behaviour. The Hα line shows complex behaviour with instantaneous profiles highly a simetric. To examine in more detail the line-emision variations, we have obtain ed the integrated line fluxes for the Hα wings and core. For some flares only part of the emission line forming region is involved.