HD 34736: an intensely magnetised double-lined spectroscopic
binary with rapidly rotating chemically peculiar B-type
components

J 2024

HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components

SEMENKO, E.; O. KOCHUKHOV; Zdeněk MIKULÁŠEK; G. A. WADE; E. ALECIAN et al.

Základní údaje

Originální název

HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components

Autoři

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2024, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00137907

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

techniques: polarimetric; binaries: spectroscopic; stars: chemically peculiar; stars: magnetic fields

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 7. 1. 2025 14:44, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival observational data, we characterize the system and its components, including their rotation and magnetic fields. Fitting of the radial velocities yields P-orb=83.(d)219(3) and e=0.8103(3). The primary component is a CP He-wk star with T-effA=13000 +/- 500 K and upsilon(e) sin i=75 +/- 3 km s(-1), while the secondary exhibits variability of Mg and Si lines, and has T-effB=11500 +/- 1000 K and upsilon(e)sin i=110-180 km s(-1). Transiting Exoplanet Survey Satellite and Kilodegree Extremely Little Telescope photometry reveal clear variability of the primary component with a rotational period P-rotA=1.d2799885(11), which is lengthening at a rate of 1.26(6) s yr(-1). For the secondary, P-rotB=0.d5226938(5), reducing at a rate of -0.14(3) s yr(-1). The longitudinal component < Bz > of the primary's strongly asymmetric global magnetic field varies from -6 to +5 kG. Weak spectropolarimetric evidence of a magnetic field is found for the secondary star. The observed X-ray and radio emission of HD 34736 may equally be linked to a suspected T Tau-like companion or magnetospheric emission from the principal components. Given the presence of a possible third magnetically active body, one can propose that the magnetic characteristics of the protostellar environment may be connected to the formation of such systems.

Citovat

SEMENKO, E.; O. KOCHUKHOV; Zdeněk MIKULÁŠEK; G. A. WADE; E. ALECIAN; D. BOHLENDER; B. DAS; D. L. FELIZ; Jan JANÍK; Jakub KOLÁŘ; Jiří KRTIČKA; D. O. KUDRYAVTSEV; J. M. LABADIE-BARTZ; D. MKRTICHIAN; D. MONIN; V. PETIT; I. I. ROMANYUK; M. E. SHULTZ; D. SHULYAK; R. J. SIVERD; A. TKACHENKO; I. A. YAKUNIN a Miloslav ZEJDA. HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2024, roč. 535, č. 3, s. 2812-2836. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stae2503.

@article{2457922,
   author = {Semenko, E. and Kochukhov, O. and Mikulášek, Zdeněk and Wade, G. A. and Alecian, E. and Bohlender, D. and Das, B. and Feliz, D. L. and Janík, Jan and Kolář, Jakub and Krtička, Jiří and Kudryavtsev, D. O. and LabadieandBartz, J. M. and Mkrtichian, D. and Monin, D. and Petit, V. and Romanyuk, I. I. and Shultz, M. E. and Shulyak, D. and Siverd, R. J. and Tkachenko, A. and Yakunin, I. A. and Zejda, Miloslav},
   article_number = {3},
   doi = {https://doi.org/10.1093/mnras/stae2503},
   keywords = {techniques: polarimetric; binaries: spectroscopic; stars: chemically peculiar; stars: magnetic fields},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components},
   url = {https://academic.oup.com/mnras/article/535/3/2812/7881589},
   volume = {535},
   year = {2024}
}

TY  - JOUR
ID  - 2457922
AU  - Semenko, E. - Kochukhov, O. - Mikulášek, Zdeněk - Wade, G. A. - Alecian, E. - Bohlender, D. - Das, B. - Feliz, D. L. - Janík, Jan - Kolář, Jakub - Krtička, Jiří - Kudryavtsev, D. O. - Labadie-Bartz, J. M. - Mkrtichian, D. - Monin, D. - Petit, V. - Romanyuk, I. I. - Shultz, M. E. - Shulyak, D. - Siverd, R. J. - Tkachenko, A. - Yakunin, I. A. - Zejda, Miloslav
PY  - 2024
TI  - HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 535
IS  - 3
SP  - 2812-2836
EP  - 2812-2836
PB  - Oxford University Press
SN  - 00358711
KW  - techniques: polarimetric
KW  - binaries: spectroscopic
KW  - stars: chemically peculiar
KW  - stars: magnetic fields
UR  - https://academic.oup.com/mnras/article/535/3/2812/7881589
N2  - We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival observational data, we characterize the system and its components, including their rotation and magnetic fields. Fitting of the radial velocities yields P-orb=83.(d)219(3) and e=0.8103(3). The primary component is a CP He-wk star with T-effA=13000 +/- 500 K and upsilon(e) sin i=75 +/- 3 km s(-1), while the secondary exhibits variability of Mg and Si lines, and has T-effB=11500 +/- 1000 K and upsilon(e)sin i=110-180 km s(-1). Transiting Exoplanet Survey Satellite and Kilodegree Extremely Little Telescope photometry reveal clear variability of the primary component with a rotational period P-rotA=1.d2799885(11), which is lengthening at a rate of 1.26(6) s yr(-1). For the secondary, P-rotB=0.d5226938(5), reducing at a rate of -0.14(3) s yr(-1). The longitudinal component < Bz > of the primary's strongly asymmetric global magnetic field varies from -6 to +5 kG. Weak spectropolarimetric evidence of a magnetic field is found for the secondary star. The observed X-ray and radio emission of HD 34736 may equally be linked to a suspected T Tau-like companion or magnetospheric emission from the principal components. Given the presence of a possible third magnetically active body, one can propose that the magnetic characteristics of the protostellar environment may be connected to the formation of such systems.
ER  -

SEMENKO, E.; O. KOCHUKHOV; Zdeněk MIKULÁŠEK; G. A. WADE; E. ALECIAN; D. BOHLENDER; B. DAS; D. L. FELIZ; Jan JANÍK; Jakub KOLÁŘ; Jiří KRTIČKA; D. O. KUDRYAVTSEV; J. M. LABADIE-BARTZ; D. MKRTICHIAN; D. MONIN; V. PETIT; I. I. ROMANYUK; M. E. SHULTZ; D. SHULYAK; R. J. SIVERD; A. TKACHENKO; I. A. YAKUNIN a Miloslav ZEJDA. HD 34736: an intensely magnetised double-lined spectroscopic binary with rapidly rotating chemically peculiar B-type components. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2024, roč.~535, č.~3, s.~2812-2836. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stae2503.

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