The first spectra for the RX J0440.9+4431 from 2m Terskol telescope

Details The first spectra for the RX J0440.9+4431 from 2m Terskol telescope The first spectra for the RX J0440.9+4431 from 2m Terskol telescope

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ysc..conf...13s&link_type=abstract

Advances in Astronomy and Space Physics, Proceedings of the 17th Young Scientists' Conference on Astronomy and Space Physics, he

Physics

Space Physics

Scientific paper

We present the first results on the spectra of Be/X-ray binary RX J0440.9+4431 obtained with the 2m Ritchey-Chretein-Coude telescope with Cassegrain Multi Mode Spectrograph (CMMS) (with R=14000) at Terskol observatory. The H_{α} line profile indicates that the new episode of the V/R variability is occuring in the system. The profiles of the H_α, H_β and He I 7065.71, 6678.15, 5875.97 lines were analyzed and equivalent width were determined. We compared our H_α line profile parameters with the previous results from Reig et al. (2005) and estimated characteristic time scale for disc changes as about 14 years.

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