Photometric Study of the Very Short Period Shallow Contact Binary DD Comae Berenices

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F10%3A00044136" target="_blank" >RIV/00216224:14310/10:00044136 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Photometric Study of the Very Short Period Shallow Contact Binary DD Comae Berenices

Popis výsledku v původním jazyce

The first photometric solutions of the very short period (VSP) close binary DD Comae Berenices (P=0.26920811) based on our new complete IRc light curves are derived. They show that the system belongs to shallow contact W UMa systems with an overcontact.The observed light curve distortions are explained by employing the spots model due to the latetype nature of both components. We have collected all available photometric data which we treated simultaneously using our own method based on the usage of computed model light curves as templates. We recalculated published times of light minimum and added new ones of our own to construct an OC diagram that spans over 70 years. We found that the orbital period of DD Com is continuously increasing with 0.00401s/yr. The period increase may be caused by the mass transfer from the less massive component to the more massive one. DD Com is a rare system that lies on the expanding phase of the TRO cycle.

Název v anglickém jazyce

Photometric Study of the Very Short Period Shallow Contact Binary DD Comae Berenices

Popis výsledku anglicky

The first photometric solutions of the very short period (VSP) close binary DD Comae Berenices (P=0.26920811) based on our new complete IRc light curves are derived. They show that the system belongs to shallow contact W UMa systems with an overcontact.The observed light curve distortions are explained by employing the spots model due to the latetype nature of both components. We have collected all available photometric data which we treated simultaneously using our own method based on the usage of computed model light curves as templates. We recalculated published times of light minimum and added new ones of our own to construct an OC diagram that spans over 70 years. We found that the orbital period of DD Com is continuously increasing with 0.00401s/yr. The period increase may be caused by the mass transfer from the less massive component to the more massive one. DD Com is a rare system that lies on the expanding phase of the TRO cycle.

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>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Astronomical Journal

ISSN

0004-6256

e-ISSN

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Svazek periodika

140

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000278691700020

EID výsledku v databázi Scopus

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