Research output: Contribution to journal › Article › peer-review
Detection of the binarity of the star J1158+4239. / Khovrichev, M. Yu; Kulikova, A. M.; Sokov, E. N.; Dyachenko, V. V.; Rastegaev, D. A.; Beskakotov, A. S.; Balega, Yu Yu; Safonov, B. S.; Dodin, A. V.; Vozyakova, O. V.
In: Astronomy Letters, Vol. 42, No. 10, 01.10.2016, p. 686-692.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Detection of the binarity of the star J1158+4239
AU - Khovrichev, M. Yu
AU - Kulikova, A. M.
AU - Sokov, E. N.
AU - Dyachenko, V. V.
AU - Rastegaev, D. A.
AU - Beskakotov, A. S.
AU - Balega, Yu Yu
AU - Safonov, B. S.
AU - Dodin, A. V.
AU - Vozyakova, O. V.
N1 - Publisher Copyright: © 2016, Pleiades Publishing, Inc. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - One of the goals of the Pulkovo program of research on stars with large proper motions is to reveal among the low-luminosity stars those that have evidence of binarity. Twelve astrometric binary candidates from the Pulkovo list have been included in the program of speckle observations with the BTA telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) and the 2.5-m telescope at the Caucasus Observatory (CO) of the Sternberg Astronomical Institute of the Moscow State University to confirm their binarity and then to determine the parameters of the revealed stellar pairs. The binarity of the brightest of these stars, J1158+4239 (GJ 3697), has been confirmed. Four sessions of speckle observations with the BTA SAO RAS telescope and one session with the 2.5-m CO telescope have been carried out in 2015–2016. The weighted mean estimates of the pair parameters are ρ = 286.5 ± 1.2 mas and θ = 230.24◦ ± 0.16◦ at the epoch B2015.88248. The magnitude difference between the pair stars is Δm = 0.55 ± 0.03 (a filter with a central wavelength of 800 nm and a FWHM of 100 nm) and Δm = 0.9 ± 0.1 (an R filter).
AB - One of the goals of the Pulkovo program of research on stars with large proper motions is to reveal among the low-luminosity stars those that have evidence of binarity. Twelve astrometric binary candidates from the Pulkovo list have been included in the program of speckle observations with the BTA telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) and the 2.5-m telescope at the Caucasus Observatory (CO) of the Sternberg Astronomical Institute of the Moscow State University to confirm their binarity and then to determine the parameters of the revealed stellar pairs. The binarity of the brightest of these stars, J1158+4239 (GJ 3697), has been confirmed. Four sessions of speckle observations with the BTA SAO RAS telescope and one session with the 2.5-m CO telescope have been carried out in 2015–2016. The weighted mean estimates of the pair parameters are ρ = 286.5 ± 1.2 mas and θ = 230.24◦ ± 0.16◦ at the epoch B2015.88248. The magnitude difference between the pair stars is Δm = 0.55 ± 0.03 (a filter with a central wavelength of 800 nm and a FWHM of 100 nm) and Δm = 0.9 ± 0.1 (an R filter).
KW - astrometry
KW - binary stars
KW - individual stars: J1158+4239 (GJ 3697)
KW - techniques: image processing
UR - http://www.scopus.com/inward/record.url?scp=84992109788&partnerID=8YFLogxK
U2 - 10.1134/S1063773716100054
DO - 10.1134/S1063773716100054
M3 - Article
AN - SCOPUS:84992109788
VL - 42
SP - 686
EP - 692
JO - Astronomy Letters
JF - Astronomy Letters
SN - 1063-7737
IS - 10
ER -
ID: 76242788