Apsidal motion and absolute parameters for five LMC eccentric eclipsing binaries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173966" target="_blank" >RIV/00216208:11320/13:10173966 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201322054" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201322054</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201322054" target="_blank" >10.1051/0004-6361/201322054</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Apsidal motion and absolute parameters for five LMC eccentric eclipsing binaries

Popis výsledku v původním jazyce

Aims. As part of our observational projects at the La Silla Danish 1.54-meter telescope, we aim to measure the precise times of minimum light for eccentric eclipsing binaries in the Large Magellanic Cloud, needed for accurate determination of apsidal motion. Many new times of minima were derived from the photometric databases OGLE and MACHO. Several new minima were also observed. Five early-type and eccentric-orbit eclipsing binaries: HV 982 (P = 5. d 34, e = 0.15), HV 2274 (5. d 73, 0.17), MACHO 78.6097.13 (3. d 11, 0.05), MACHO 81.8881.47 (3. d 88, 0.22), and MACHO 79.5377.76 (2. d 64, 0.06) were studied. Methods. The O-C diagrams of the systems were analysed using all reliable timings found in the literature, and new or improved elements of apsidalmotion were obtained. Light and radial velocity curves of MACHO 81.8881.47 and MACHO 79.5377.76 were analysed using the program PHOEBE. Results. We derived for the first time or significantly improved the relatively short periods of apsid

Název v anglickém jazyce

Apsidal motion and absolute parameters for five LMC eccentric eclipsing binaries

Popis výsledku anglicky

Aims. As part of our observational projects at the La Silla Danish 1.54-meter telescope, we aim to measure the precise times of minimum light for eccentric eclipsing binaries in the Large Magellanic Cloud, needed for accurate determination of apsidal motion. Many new times of minima were derived from the photometric databases OGLE and MACHO. Several new minima were also observed. Five early-type and eccentric-orbit eclipsing binaries: HV 982 (P = 5. d 34, e = 0.15), HV 2274 (5. d 73, 0.17), MACHO 78.6097.13 (3. d 11, 0.05), MACHO 81.8881.47 (3. d 88, 0.22), and MACHO 79.5377.76 (2. d 64, 0.06) were studied. Methods. The O-C diagrams of the systems were analysed using all reliable timings found in the literature, and new or improved elements of apsidalmotion were obtained. Light and radial velocity curves of MACHO 81.8881.47 and MACHO 79.5377.76 were analysed using the program PHOEBE. Results. We derived for the first time or significantly improved the relatively short periods of apsid

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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

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

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Svazek periodika

558

Číslo periodika v rámci svazku

říjen

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000326574000051

EID výsledku v databázi Scopus

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