The quest for companions to post-common envelope binaries II. NSVS14256825 and HS0705+6700

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10128477" target="_blank" >RIV/00216208:11320/12:10128477 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/12:00388381

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201118105" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201118105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201118105" target="_blank" >10.1051/0004-6361/201118105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The quest for companions to post-common envelope binaries II. NSVS14256825 and HS0705+6700

Popis výsledku v původním jazyce

We report new mid-eclipse times of the two close binaries NSVS14256825 and HS0705+6700, harboring an sdB primary and a low-mass main-sequence secondary. Both objects display clear variations in their measured orbital period, which can be explained by theaction of a third object orbiting the binary. If this interpretation is correct, the third object in NSVS14256825 is a giant planet with a mass of roughly 12 M-Jup. For HS0705+6700, we provide evidence that strengthens the case for the suggested periodic nature of the eclipse time variation and reduces the uncertainties in the parameters of the brown dwarf implied by that model. The derived period is 8.4 yr and the mass is 31 M-Jup, if the orbit is coplanar with the binary. This research is part of thePlanetFinders project, an ongoing collaboration between professional astronomers and student groups at high schools.

Název v anglickém jazyce

The quest for companions to post-common envelope binaries II. NSVS14256825 and HS0705+6700

Popis výsledku anglicky

We report new mid-eclipse times of the two close binaries NSVS14256825 and HS0705+6700, harboring an sdB primary and a low-mass main-sequence secondary. Both objects display clear variations in their measured orbital period, which can be explained by theaction of a third object orbiting the binary. If this interpretation is correct, the third object in NSVS14256825 is a giant planet with a mass of roughly 12 M-Jup. For HS0705+6700, we provide evidence that strengthens the case for the suggested periodic nature of the eclipse time variation and reduces the uncertainties in the parameters of the brown dwarf implied by that model. The derived period is 8.4 yr and the mass is 31 M-Jup, if the orbit is coplanar with the binary. This research is part of thePlanetFinders project, an ongoing collaboration between professional astronomers and student groups at high schools.

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

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

—

Svazek periodika

540

Číslo periodika v rámci svazku

duben

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000303315400022

EID výsledku v databázi Scopus

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