Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Weak Magnetic Fields in Two Herbig Ae Systems: The SB2 AK Sco and the Presumed Binary HD 95881. / Järvinen, S. P.; Carroll, T. A.; Hubrig, S.; Ilyin, I.; Schöller, M.; Castelli, F.; Hummel, C. A.; Petr-Gotzens, M. G.; Korhonen, H.; Weigelt, G.; Pogodin, M. A.; Drake, N. A.
в: Astrophysical Journal Letters, Том 858, № 2, L18, 10.05.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Weak Magnetic Fields in Two Herbig Ae Systems: The SB2 AK Sco and the Presumed Binary HD 95881
AU - Järvinen, S. P.
AU - Carroll, T. A.
AU - Hubrig, S.
AU - Ilyin, I.
AU - Schöller, M.
AU - Castelli, F.
AU - Hummel, C. A.
AU - Petr-Gotzens, M. G.
AU - Korhonen, H.
AU - Weigelt, G.
AU - Pogodin, M. A.
AU - Drake, N. A.
PY - 2018/5/10
Y1 - 2018/5/10
N2 - We report the detection of weak mean longitudinal magnetic fields in the Herbig Ae double-lined spectroscopic binary AK Sco and in the presumed spectroscopic Herbig Ae binary HD 95881 using observations with the High Accuracy Radial velocity Planet Searcher polarimeter (HARPSpol) attached to the European Southern Observatorys (ESO's) 3.6 m telescope. Employing a multi-line singular value decomposition method, we detect a mean longitudinal magnetic field {Bz} = -83 ± 31G in the secondary component of AK Sco on one occasion. For HD 95881, we measure {Bz} = -93 ± 25 G and {Bz} = 105 ± 29 G at two different observing epochs. For all the detections the false alarm probability is smaller than 10-5. For AK Sco system, we discover that accretion diagnostic Na I doublet lines and photospheric lines show intensity variations over the observing nights. The double-lined spectral appearance of HD 95881 is presented here for the first time.
AB - We report the detection of weak mean longitudinal magnetic fields in the Herbig Ae double-lined spectroscopic binary AK Sco and in the presumed spectroscopic Herbig Ae binary HD 95881 using observations with the High Accuracy Radial velocity Planet Searcher polarimeter (HARPSpol) attached to the European Southern Observatorys (ESO's) 3.6 m telescope. Employing a multi-line singular value decomposition method, we detect a mean longitudinal magnetic field {Bz} = -83 ± 31G in the secondary component of AK Sco on one occasion. For HD 95881, we measure {Bz} = -93 ± 25 G and {Bz} = 105 ± 29 G at two different observing epochs. For all the detections the false alarm probability is smaller than 10-5. For AK Sco system, we discover that accretion diagnostic Na I doublet lines and photospheric lines show intensity variations over the observing nights. The double-lined spectral appearance of HD 95881 is presented here for the first time.
KW - двойные звезды
KW - спектроскопия
KW - химическое содержание звезд
KW - магнитные поля
KW - звезды до главной последовательности
KW - binaries: spectroscopic
KW - stars: abundances
KW - stars: individual (AK Sco, HD 95881)
KW - stars: magnetic Field
KW - stars: pre-main sequence
KW - stars: magnetic field
KW - AE/BE STARS
KW - ACCRETION
UR - http://www.scopus.com/inward/record.url?scp=85047394970&partnerID=8YFLogxK
UR - http://stacks.iop.org/2041-8205/858/i=2/a=L18?key=crossref.070eda5afa3bf3df3477b1b508a78aea
UR - http://www.mendeley.com/research/weak-magnetic-fields-two-herbig-ae-systems-sb2-ak-sco-presumed-binary-hd-95881
U2 - 10.3847/2041-8213/aac0fa
DO - 10.3847/2041-8213/aac0fa
M3 - Article
AN - SCOPUS:85047394970
VL - 858
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
SN - 2041-8205
IS - 2
M1 - L18
ER -
ID: 33796946