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Magnetic stars with wide depressions in the continuum. 2. The silicon star with a complex field structure HD 27404. / Semenko, E. A.; Romanyuk, I. I.; Moiseeva, A. V.; Kudryavtsev, D. O.; Yakunin, I. A.
в: Astrophysical Bulletin, Том 72, № 4, 01.10.2017, стр. 384-390.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Magnetic stars with wide depressions in the continuum. 2. The silicon star with a complex field structure HD 27404
AU - Semenko, E. A.
AU - Romanyuk, I. I.
AU - Moiseeva, A. V.
AU - Kudryavtsev, D. O.
AU - Yakunin, I. A.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Observations of the chemically peculiar star HD 27404 with the 6-m SAO RAS telescope showed a strong magnetic field with the longitudinal field component varying in a complicated way in the range of −2.5 to 1 kG. Fundamental parameters of the star (Teff = 11 300 K, log g = 3.9) were estimated analyzing photometric indices in the Geneva and in the Stromgren–Crawford photometric systems. We detected weak radial velocity variations which can be due to the presence of a close star companion or chemical spots in the photosphere. Rapid estimation of the key chemical element abundance allows us to refer HD 27404 to a SiCr or Si+ chemically peculiar A0–B9 star.
AB - Observations of the chemically peculiar star HD 27404 with the 6-m SAO RAS telescope showed a strong magnetic field with the longitudinal field component varying in a complicated way in the range of −2.5 to 1 kG. Fundamental parameters of the star (Teff = 11 300 K, log g = 3.9) were estimated analyzing photometric indices in the Geneva and in the Stromgren–Crawford photometric systems. We detected weak radial velocity variations which can be due to the presence of a close star companion or chemical spots in the photosphere. Rapid estimation of the key chemical element abundance allows us to refer HD 27404 to a SiCr or Si+ chemically peculiar A0–B9 star.
KW - chemically peculiar—stars
KW - HD 27404
KW - individual
KW - magnetic field—stars
KW - stars
UR - http://www.scopus.com/inward/record.url?scp=85035212065&partnerID=8YFLogxK
U2 - 10.1134/S1990341317040034
DO - 10.1134/S1990341317040034
M3 - Article
AN - SCOPUS:85035212065
VL - 72
SP - 384
EP - 390
JO - Astrophysical Bulletin
JF - Astrophysical Bulletin
SN - 1990-3413
IS - 4
ER -
ID: 127695033