On multicomponent effects in stellar winds of stars at
extremely low metallicity

J 2003

On multicomponent effects in stellar winds of stars at extremely low metallicity

KRTIČKA, Jiří; Stanley P. OWOCKI; Jiří KUBÁT; Ross K. GALLOWAY; John C. BROWN et. al.

Basic information

Original name

On multicomponent effects in stellar winds of stars at extremely low metallicity

Authors

KRTIČKA, Jiří; Stanley P. OWOCKI; Jiří KUBÁT; Ross K. GALLOWAY and John C. BROWN

Edition

Astronomy and Astrophysics, Les Ulis Cedex, France, EDP Sciences, 2003, 0004-6361

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

France

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 3.843

RIV identification code

RIV/00216224:14310/03:00008001

Organization unit

Faculty of Science

UT WoS

000182224500029

Keywords in English

stars: mass-loss -- stars: early-type -- stars:abundances -- stars: winds; outflows

Abstract

In the original language

We calculate multicomponent line-driven wind models of stars at extremely low metallicity suitable for massive first generation stars. For most of the models we find that the multicomponent wind nature is not important for either wind dynamics or for wind temperature stratification. However, for stars with the lowest metallicities we find that multicomponent effects influence the wind structure. These effects range from pure heating to possible fallback of the nonabsorbing wind component. We present a simple formula for the calculation of metallicity for which the multicomponent effects become important. We show that the importance of the multicomponent nature of winds of low metallicity stars is characterised not only by the low density of driving ions, but also by lower mass-loss rate.

Links

GA205/01/0656, research and development project

Name: Modelování rozsáhlých obálek horkých hvězd

GA205/02/0445, research and development project

Name: Fyzika horkých hvězd a hvězdných systémů s horkými složkami

Investor: Czech Science Foundation, Physics of hot stars and stellar systems with hot components

Cite

KRTIČKA, Jiří; Stanley P. OWOCKI; Jiří KUBÁT; Ross K. GALLOWAY and John C. BROWN. On multicomponent effects in stellar winds of stars at extremely low metallicity. Astronomy and Astrophysics. Les Ulis Cedex, France: EDP Sciences, 2003, vol. 35, No 402, p. 713-718. ISSN 0004-6361.

@article{486041,
   author = {Krtička, Jiří and Owocki, Stanley P. and Kubát, Jiří and Galloway, Ross K. and Brown, John C.},
   article_location = {Les Ulis Cedex, France},
   article_number = {402},
   keywords = {stars: mass-loss -- stars: early-type -- stars:abundances -- stars: winds; outflows},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {On multicomponent effects in stellar winds of stars at extremely low metallicity},
   url = {http://www.edpsciences.org/articles/aa/abs/2003/17/aah4143/aah4143.html},
   volume = {35},
   year = {2003}
}

TY  - JOUR
ID  - 486041
AU  - Krtička, Jiří - Owocki, Stanley P. - Kubát, Jiří - Galloway, Ross K. - Brown, John C.
PY  - 2003
TI  - On multicomponent effects in stellar winds of stars at extremely low metallicity
JF  - Astronomy and Astrophysics
VL  - 35
IS  - 402
SP  - 713-718
EP  - 713-718
PB  - EDP Sciences
SN  - 00046361
KW  - stars: mass-loss -- stars: early-type -- stars:abundances -- stars: winds
KW  - outflows
UR  - http://www.edpsciences.org/articles/aa/abs/2003/17/aah4143/aah4143.html
N2  - We calculate multicomponent line-driven wind models of stars at extremely low metallicity suitable for massive first generation stars. For most of the models we find that the multicomponent wind nature is not important for either wind dynamics or for wind temperature stratification. However, for stars with the lowest metallicities we find that multicomponent effects influence the wind structure. These effects range from pure heating to possible fallback of the nonabsorbing wind component. We present a simple formula for the calculation of metallicity for which the multicomponent effects become important. We show that the importance of the multicomponent nature of winds of low metallicity stars is characterised not only by the low density of driving ions, but also by lower mass-loss rate.
ER  -

KRTIČKA, Jiří; Stanley P. OWOCKI; Jiří KUBÁT; Ross K. GALLOWAY and John C. BROWN. On multicomponent effects in stellar winds of stars at extremely low metallicity. \textit{Astronomy and Astrophysics}. Les Ulis Cedex, France: EDP Sciences, 2003, vol.~35, No~402, p.~713-718. ISSN~0004-6361.

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