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

(2) International Center for Astronomical; Andrew Simon (1); A. V. Bondar (2); Ecological Research; Glushkova ave.; Kyiv; Medical; Terskol Observatory); Ukraine; V. M. Reshetnyk (1) ((1) National Taras Shevchenko University of Kyiv

arxiv: 1206.1558 · v1 · pith:2HP7MTZPnew · submitted 2012-06-07 · 🌌 astro-ph.SR

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

Andrew Simon (1) , A. V. Bondar (2) , V. M. Reshetnyk (1) ((1) National Taras Shevchenko University of Kyiv , Glushkova ave. , Kyiv , Ukraine , (2) International Center for Astronomical , Medical

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Ecological Research Terskol Observatory)

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keywords h-alphafirstj0440lineprofileresultsspectratelescope

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

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

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