Geodesic
INTEGRAL X-ray source IGR 21343+4738: spectral and photometric variability research of the optical component
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 153 (2011) no. 2, pp. 136-140

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The preliminary results of photometric and spectroscopic monitoring of the optical component of the hard X-ray source IGR 21343+4738 by the RTT-150 telescope are presented. For the first time, estimates of the system's orbital parameters have been obtained: the $\gamma$-velocity is $-70$ km/s, the semi-amplitude of radial velocity curve is $K=10$ km/s, and the system's orbital period is $40$ or $80$ days. A preliminary analysis of photometric variability on different time scales (hours, days, months, and years) is completed.
Keywords: Be-stars, X-ray sources
Mots-clés : IGR 21343+4738. 
@article{UZKU_2011_153_2_a16,
     author = {I. F. Bikmaev and E. A. Nikolaeva},
     title = {INTEGRAL {X-ray} source {IGR} 21343+4738: spectral and photometric variability research of the optical component},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {136--140},
     publisher = {mathdoc},
     volume = {153},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2011_153_2_a16/}
}
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I. F. Bikmaev; E. A. Nikolaeva. INTEGRAL X-ray source IGR 21343+4738: spectral and photometric variability research of the optical component. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 153 (2011) no. 2, pp. 136-140. http://geodesic.mathdoc.fr/item/UZKU_2011_153_2_a16/