Statistics of Magnetic Field Measurements in OB Stars

Переведенное название: Статистика измерений магнитных полей массивных звезд

A. F. Kholtygin, S. Fabrika, S. Hubrig, G. A. Chuntonov, A. S. Medvedev, Yu. V. Milanova, M. Schoeller, G. G. Valyavin, O. A. Tsiopa, S. V. Boronina, BOB Collaboration

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференции

Выдержка

We review the measurements of magnetic fields of OBA stars. Based on these data we confirm that magnetic fields are distributed according to a lognormal law with a mean log(B)=-0.5 (B in kG) with a standard deviation sigma=0.5. The shape of the magnetic field distribution is similar to that for neutron stars. This finding is in favor of the hypothesis that the magnetic field of a neutron star is determined mainly by the magnetic field of its predecessor, the massive OB star. Further, we model the evolution of an ensemble of magnetic massive stars in the Galaxy. We use our own population synthesis code to obtain the distribution of stellar radii, ages, masses, temperatures, effective magnetic fields and magnetic fluxes from the pre-main sequence (PMS) via zero age main sequence (ZAMS) up to the terminal age main sequence (TAMS) stages. A comparison of the obtained in our model magnetic field distribution (MFD) with that obtained from the recent measurements of the stellar magnetic field allows us to conclude that the evolution of magnetic fields of massive stars is slow if not absent. The shape of the real MFD shows no indications of the magnetic desert proposed previously. Based on this finding we argue that the observed fraction of magnetic stars is determined by physical conditions at the PMS stage of stellar evolution.
Язык оригиналаАнглийский
Название основной публикацииSTARS: FROM COLLAPSE TO COLLAPSE
РедакторыYY Balega, DO Kudryavtsev, Romanyuk, IA Yakunin
ИздательAstronomical Society of the Pacific
Страницы261-264
Число страниц4
ISBN (печатное издание)978-1-58381-904-3
СостояниеОпубликовано - 2017
СобытиеConference on Stars: From Collapse to Collapse - Nizhny Arkhyz
Продолжительность: 2 окт 20166 окт 2016

Серия публикаций

НазваниеAstronomical Society of the Pacific Conference Series
ИздательASTRONOMICAL SOC PACIFIC
Том510

Конференция

КонференцияConference on Stars: From Collapse to Collapse
ГородNizhny Arkhyz
Период2/10/166/10/16

Цитировать

Kholtygin, A. F., Fabrika, S., Hubrig, S., Chuntonov, G. A., Medvedev, A. S., Milanova, Y. V., ... BOB Collaboration (2017). Statistics of Magnetic Field Measurements in OB Stars. В YY. Balega, DO. Kudryavtsev, Romanyuk, & IA. Yakunin (Ред.), STARS: FROM COLLAPSE TO COLLAPSE (стр. 261-264). (Astronomical Society of the Pacific Conference Series; Том 510). Astronomical Society of the Pacific.
Kholtygin, A. F. ; Fabrika, S. ; Hubrig, S. ; Chuntonov, G. A. ; Medvedev, A. S. ; Milanova, Yu. V. ; Schoeller, M. ; Valyavin, G. G. ; Tsiopa, O. A. ; Boronina, S. V. ; BOB Collaboration. / Statistics of Magnetic Field Measurements in OB Stars. STARS: FROM COLLAPSE TO COLLAPSE. редактор / YY Balega ; DO Kudryavtsev ; Romanyuk ; IA Yakunin. Astronomical Society of the Pacific, 2017. стр. 261-264 (Astronomical Society of the Pacific Conference Series).
@inproceedings{fb8fe12b5c8d40bfac0638940894582d,
title = "Statistics of Magnetic Field Measurements in OB Stars",
abstract = "We review the measurements of magnetic fields of OBA stars. Based on these data we confirm that magnetic fields are distributed according to a lognormal law with a mean log(B)=-0.5 (B in kG) with a standard deviation sigma=0.5. The shape of the magnetic field distribution is similar to that for neutron stars. This finding is in favor of the hypothesis that the magnetic field of a neutron star is determined mainly by the magnetic field of its predecessor, the massive OB star. Further, we model the evolution of an ensemble of magnetic massive stars in the Galaxy. We use our own population synthesis code to obtain the distribution of stellar radii, ages, masses, temperatures, effective magnetic fields and magnetic fluxes from the pre-main sequence (PMS) via zero age main sequence (ZAMS) up to the terminal age main sequence (TAMS) stages. A comparison of the obtained in our model magnetic field distribution (MFD) with that obtained from the recent measurements of the stellar magnetic field allows us to conclude that the evolution of magnetic fields of massive stars is slow if not absent. The shape of the real MFD shows no indications of the magnetic desert proposed previously. Based on this finding we argue that the observed fraction of magnetic stars is determined by physical conditions at the PMS stage of stellar evolution.",
keywords = "MASSIVE STARS",
author = "Kholtygin, {A. F.} and S. Fabrika and S. Hubrig and Chuntonov, {G. A.} and Medvedev, {A. S.} and Milanova, {Yu. V.} and M. Schoeller and Valyavin, {G. G.} and Tsiopa, {O. A.} and Boronina, {S. V.} and {BOB Collaboration}",
year = "2017",
language = "Английский",
isbn = "978-1-58381-904-3",
series = "Astronomical Society of the Pacific Conference Series",
publisher = "Astronomical Society of the Pacific",
pages = "261--264",
editor = "YY Balega and DO Kudryavtsev and Romanyuk and IA Yakunin",
booktitle = "STARS: FROM COLLAPSE TO COLLAPSE",
address = "Соединенные Штаты Америки",

}

Kholtygin, AF, Fabrika, S, Hubrig, S, Chuntonov, GA, Medvedev, AS, Milanova, YV, Schoeller, M, Valyavin, GG, Tsiopa, OA, Boronina, SV & BOB Collaboration 2017, Statistics of Magnetic Field Measurements in OB Stars. в YY Balega, DO Kudryavtsev, Romanyuk & IA Yakunin (ред.), STARS: FROM COLLAPSE TO COLLAPSE. Astronomical Society of the Pacific Conference Series, том. 510, Astronomical Society of the Pacific, стр. 261-264, Nizhny Arkhyz, 2/10/16.

Statistics of Magnetic Field Measurements in OB Stars. / Kholtygin, A. F.; Fabrika, S.; Hubrig, S.; Chuntonov, G. A.; Medvedev, A. S.; Milanova, Yu. V.; Schoeller, M.; Valyavin, G. G.; Tsiopa, O. A.; Boronina, S. V.; BOB Collaboration.

STARS: FROM COLLAPSE TO COLLAPSE. ред. / YY Balega; DO Kudryavtsev; Romanyuk; IA Yakunin. Astronomical Society of the Pacific, 2017. стр. 261-264 (Astronomical Society of the Pacific Conference Series; Том 510).

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференции

TY - GEN

T1 - Statistics of Magnetic Field Measurements in OB Stars

AU - Kholtygin, A. F.

AU - Fabrika, S.

AU - Hubrig, S.

AU - Chuntonov, G. A.

AU - Medvedev, A. S.

AU - Milanova, Yu. V.

AU - Schoeller, M.

AU - Valyavin, G. G.

AU - Tsiopa, O. A.

AU - Boronina, S. V.

AU - BOB Collaboration

PY - 2017

Y1 - 2017

N2 - We review the measurements of magnetic fields of OBA stars. Based on these data we confirm that magnetic fields are distributed according to a lognormal law with a mean log(B)=-0.5 (B in kG) with a standard deviation sigma=0.5. The shape of the magnetic field distribution is similar to that for neutron stars. This finding is in favor of the hypothesis that the magnetic field of a neutron star is determined mainly by the magnetic field of its predecessor, the massive OB star. Further, we model the evolution of an ensemble of magnetic massive stars in the Galaxy. We use our own population synthesis code to obtain the distribution of stellar radii, ages, masses, temperatures, effective magnetic fields and magnetic fluxes from the pre-main sequence (PMS) via zero age main sequence (ZAMS) up to the terminal age main sequence (TAMS) stages. A comparison of the obtained in our model magnetic field distribution (MFD) with that obtained from the recent measurements of the stellar magnetic field allows us to conclude that the evolution of magnetic fields of massive stars is slow if not absent. The shape of the real MFD shows no indications of the magnetic desert proposed previously. Based on this finding we argue that the observed fraction of magnetic stars is determined by physical conditions at the PMS stage of stellar evolution.

AB - We review the measurements of magnetic fields of OBA stars. Based on these data we confirm that magnetic fields are distributed according to a lognormal law with a mean log(B)=-0.5 (B in kG) with a standard deviation sigma=0.5. The shape of the magnetic field distribution is similar to that for neutron stars. This finding is in favor of the hypothesis that the magnetic field of a neutron star is determined mainly by the magnetic field of its predecessor, the massive OB star. Further, we model the evolution of an ensemble of magnetic massive stars in the Galaxy. We use our own population synthesis code to obtain the distribution of stellar radii, ages, masses, temperatures, effective magnetic fields and magnetic fluxes from the pre-main sequence (PMS) via zero age main sequence (ZAMS) up to the terminal age main sequence (TAMS) stages. A comparison of the obtained in our model magnetic field distribution (MFD) with that obtained from the recent measurements of the stellar magnetic field allows us to conclude that the evolution of magnetic fields of massive stars is slow if not absent. The shape of the real MFD shows no indications of the magnetic desert proposed previously. Based on this finding we argue that the observed fraction of magnetic stars is determined by physical conditions at the PMS stage of stellar evolution.

KW - MASSIVE STARS

M3 - статья в сборнике материалов конференции

SN - 978-1-58381-904-3

T3 - Astronomical Society of the Pacific Conference Series

SP - 261

EP - 264

BT - STARS: FROM COLLAPSE TO COLLAPSE

A2 - Balega, YY

A2 - Kudryavtsev, DO

A2 - Romanyuk, null

A2 - Yakunin, IA

PB - Astronomical Society of the Pacific

ER -

Kholtygin AF, Fabrika S, Hubrig S, Chuntonov GA, Medvedev AS, Milanova YV и соавт. Statistics of Magnetic Field Measurements in OB Stars. В Balega YY, Kudryavtsev DO, Romanyuk, Yakunin IA, редакторы, STARS: FROM COLLAPSE TO COLLAPSE. Astronomical Society of the Pacific. 2017. стр. 261-264. (Astronomical Society of the Pacific Conference Series).