Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary α Draconis
K Pavlovski, CA Hummel, A Tkachenko… - Astronomy & …, 2022 - aanda.org
Aims. Both components of the bright eclipsing binary α Dra have been resolved using long
baseline interferometry and the secondary component has been shown to contribute …
baseline interferometry and the secondary component has been shown to contribute …
Results of magnetic field measurements of CP-stars performed with the 6-m telescope. III. Observations in 2009
II Romanyuk, EA Semenko, DO Kudryavtsev… - Astrophysical …, 2016 - Springer
We present the results of measuring longitudinal magnetic fields (B e), rotation velocities (ve
sin i), and radial velocities (V r) of 44 stars observed with the Main Stellar Spectrograph …
sin i), and radial velocities (V r) of 44 stars observed with the Main Stellar Spectrograph …
Stars with discrepant v sin i as derived from the Ca II λ3933 Å and Mg II λ4481 Å lines. V. HD 182255 and HD 214923—SPB stars in binary systems
J Zverko, I Romanyuk, I Iliev, D Kudryavtsev… - Astrophysical …, 2016 - Springer
The axial rotation of a star plays an important role in its evolution, the physical conditions in
its atmosphere and the appearance of its spectrum. We analyzed the CCD spectra of two …
its atmosphere and the appearance of its spectrum. We analyzed the CCD spectra of two …
HD 183986: a high-contrast SB2 system with a pulsating component
M Vaňko, T Pribulla, P Gajdoš, J Budaj… - The Astronomical …, 2022 - iopscience.iop.org
There is a small group of peculiar early-type stars on the main sequence that show different
rotation velocities from different spectral lines. This inconsistency might be due to the binary …
rotation velocities from different spectral lines. This inconsistency might be due to the binary …
Stars with discrepant υ sin i as derived from Ca II 3933 and Mg II 4481 Å lines. II. Multiple star HD 90569
J Zverko, I Iliev, I Romanyuk, I Barzova… - Astrophysical …, 2012 - Springer
Axial rotation of a star plays an important role in its evolution, physical condition in its
atmosphere and appearance of its spectrum. Methods of determinations of υ sin i are based …
atmosphere and appearance of its spectrum. Methods of determinations of υ sin i are based …
Stars with discrepant v sin i as derived from the Ca II λ3933 Å and Mg II λ4481 Å lines. IV. HD8837—a shell star, HD47964 and HD183986—new binaries
J Zverko, I Romanyuk, I Iliev, D Kudryavtsev… - Astrophysical …, 2013 - Springer
Axial rotation of a star plays an important role in its evolution, physical conditions in its
atmosphere, and appearance of its spectrum. We have analyzed CCD spectra of three stars …
atmosphere, and appearance of its spectrum. We have analyzed CCD spectra of three stars …
Stars with discrepant v sin i as derived from the Ca II 3933 and Mg II 4481 Å lines. VI. HD 199892 — an SB2 spectroscopic binary
J Zverko, I Romanyuk, I Iliev, D Kudryavtsev… - Astrophysical …, 2017 - Springer
We analyzed the spectra of a well known SB1 binary HD199892 for which the projected
rotational velocity v sin i, introduced in the literature, significantly differs when determined …
rotational velocity v sin i, introduced in the literature, significantly differs when determined …
Stars with discrepant v sin i as derived from Ca II λ 3933 Å and Mg II λ 4481 Å lines. III. Stars with v sin i (λ 3933 Å) < v sin i (λ 4481 Å)
J Zverko, I Iliev, I Romanyuk, I Barzova… - Astrophysical …, 2013 - Springer
Axial rotation of a star plays an important role in its evolution, physical conditions in its
atmosphere and the appearance of its spectrum. We analyzed CCD spectra of nine stars for …
atmosphere and the appearance of its spectrum. We analyzed CCD spectra of nine stars for …
Stars with Discrepant v sin i as Derived from the Ca II 3933 and Mg II 4481 Å Lines. VII. HD9531 (SB), HD31592 (SB2), HD129174 (SB?)
J Zverko, I Iliev, II Romanyuk, I Stateva… - Astrophysical …, 2018 - Springer
In this paper of the series we analyze three stars listed among stars with discrepant v sin i:
HD9531 and HD31592, which also show radial velocity variations inherent to spectroscopic …
HD9531 and HD31592, which also show radial velocity variations inherent to spectroscopic …
Звезды с различающимися величинами v sin i, определенными по линиям call 3933 å и MgII 4481 Å. VI. Hd 199892-спектрально-двойная типа Sb2*, 1
Ю Зверко, И Романюк, И Илиев… - Астрофизический …, 2017 - cyberleninka.ru
Мы проанализировали спектры хорошо известной двойной звезды HD 199892 типа
SB1, значения проекции скорости осевого вращения v sin i которой по литературным …
SB1, значения проекции скорости осевого вращения v sin i которой по литературным …