Behaviour of the H-alpha Line of V404 CYG

Bibcode
1998tx19.confE.369Z
Zurita, C.; Casares, J.
Bibliographical reference

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.

Advertised on:
12
1998
Number of authors
2
IAC number of authors
2
Citations
0
Refereed citations
0
Description
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.
Type
Non-refereed

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