OGLE-LMC-ECL-09937: The Most Massive Algol-Type Binary System with a Mass Measurement Accurate to 2%

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00506338" target="_blank" >RIV/67985815:_____/17:00506338 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.32023/0001-5237/67.4.3" target="_blank" >https://doi.org/10.32023/0001-5237/67.4.3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.32023/0001-5237/67.4.3" target="_blank" >10.32023/0001-5237/67.4.3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

OGLE-LMC-ECL-09937: The Most Massive Algol-Type Binary System with a Mass Measurement Accurate to 2%

Popis výsledku v původním jazyce

This paper presents a detailed analysis of the light and radial velocity curves of the semi-detached eclipsing binary system OGLE-LMC-ECL-09937. The system is composed of a hot, massive and luminous primary star of a late-O spectral type, and a more evolved, but less massive and luminous secondary, implying an Algol-type system that underwent a mass transfer episode. We derive masses of 21.04 +/- 0.34 M-circle dot and 7.61 +/- 0.09 M-circle dot and radii of 9.93 +/- 0.06 R-circle dot and 9.18 +/- 0.04 R-circle dot, for the primary and the secondary component, respectively, which make it the most massive known Algol-type system with masses and radii of the components measured with < 2% accuracy. Consequently, the parameters of OGLE-LMC-ECL-09937 provide an important contribution to the sparsely populated high-mass end of the stellar mass distribution, and an interesting object for stellar evolution studies, being a possible progenitor of a binary system composed of two neutron stars.

Název v anglickém jazyce

OGLE-LMC-ECL-09937: The Most Massive Algol-Type Binary System with a Mass Measurement Accurate to 2%

Popis výsledku anglicky

This paper presents a detailed analysis of the light and radial velocity curves of the semi-detached eclipsing binary system OGLE-LMC-ECL-09937. The system is composed of a hot, massive and luminous primary star of a late-O spectral type, and a more evolved, but less massive and luminous secondary, implying an Algol-type system that underwent a mass transfer episode. We derive masses of 21.04 +/- 0.34 M-circle dot and 7.61 +/- 0.09 M-circle dot and radii of 9.93 +/- 0.06 R-circle dot and 9.18 +/- 0.04 R-circle dot, for the primary and the secondary component, respectively, which make it the most massive known Algol-type system with masses and radii of the components measured with < 2% accuracy. Consequently, the parameters of OGLE-LMC-ECL-09937 provide an important contribution to the sparsely populated high-mass end of the stellar mass distribution, and an interesting object for stellar evolution studies, being a possible progenitor of a binary system composed of two neutron stars.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Astronomica

ISSN

0001-5237

e-ISSN

—

Svazek periodika

67

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

16

Strana od-do

329-344

Kód UT WoS článku

000423282900003

EID výsledku v databázi Scopus

—