Substellar companions in low-mass eclipsing binaries NSVS 01286630, NSVS 02502726, and NSVS 07453183

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10331833" target="_blank" >RIV/00216208:11320/16:10331833 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/16:00462103 RIV/00216224:14310/16:00107850

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201527941" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201527941</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201527941" target="_blank" >10.1051/0004-6361/201527941</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Substellar companions in low-mass eclipsing binaries NSVS 01286630, NSVS 02502726, and NSVS 07453183

Popis výsledku v původním jazyce

Aims. As part of our long-term observational project we aim to measure very precise mid-eclipse times for low-mass eclipsing binaries, which are needed to accurately determine their period changes. Over two hundred new precise times of minimum light recorded with CCD were obtained for three eclipsing binaries with short orbital periods: NSVS 01286631) (P = 0(d).38), NSVS 02502726 (0(d).56), and NSVS 07453183 (0(d).37). Methods. O-C diagrams of studied stars were analysed using all reliable timings, and new parameters of the light-time effect were obtained. Results. We derived for the first time or improved the very short orbital periods of third bodies of between one and seven years for all measured low-mass systems. We calculated that the lowest masses of the third components are between those of red and brown dwarfs. The multiplicity of these systems also plays an important role in the precise determination of their physical parameters. This research is part of an ongoing collaboration between professional astronomers and the Czech Astronomical Society, Variable Star and Exoplanet Section.

Název v anglickém jazyce

Substellar companions in low-mass eclipsing binaries NSVS 01286630, NSVS 02502726, and NSVS 07453183

Popis výsledku anglicky

Aims. As part of our long-term observational project we aim to measure very precise mid-eclipse times for low-mass eclipsing binaries, which are needed to accurately determine their period changes. Over two hundred new precise times of minimum light recorded with CCD were obtained for three eclipsing binaries with short orbital periods: NSVS 01286631) (P = 0(d).38), NSVS 02502726 (0(d).56), and NSVS 07453183 (0(d).37). Methods. O-C diagrams of studied stars were analysed using all reliable timings, and new parameters of the light-time effect were obtained. Results. We derived for the first time or improved the very short orbital periods of third bodies of between one and seven years for all measured low-mass systems. We calculated that the lowest masses of the third components are between those of red and brown dwarfs. The multiplicity of these systems also plays an important role in the precise determination of their physical parameters. This research is part of an ongoing collaboration between professional astronomers and the Czech Astronomical Society, Variable Star and Exoplanet Section.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Astronomy and Astrophysics [online]

ISSN

1432-0746

e-ISSN

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Svazek periodika

587

Číslo periodika v rámci svazku

březen

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000371589800093

EID výsledku v databázi Scopus

2-s2.0-84959019850