The Strange Case of OGLE-SMC-ECL-0277

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00485042" target="_blank" >RIV/67985815:_____/17:00485042 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10367917 RIV/00216224:14310/17:00098476

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Strange Case of OGLE-SMC-ECL-0277

Popis výsledku v původním jazyce

The eclipsing system OGLE-SMC-ECL-0277 was found to exhibit unusual photometric variability. Beside its eclipsing nature additional variations with the periodicity of about 1500 d are also seen. Variations of the eclipse depth during the time span of the observational data (mainly taken from the OGLE survey, partly our new ones) are the most pronounced. The complex behavior of all these changes makes this system absolutely unique, no such variability was ever detected and studied in other systems before. Hence, are there some new phenomena, new physics or an unknown effects playing a role? We tried to understand these variations using four different hypotheses (i.e., inclination change, spot evolution, and/or pulsation of one or both components) and comparing their results we discussed which of them is the most likely. Neither of the presented hypotheses is able to describe in detail the behavior of OGLE-SMC-ECL-0277. We also discuss a possibility that the variable can be a member of the so-called double periodic variables group.

Název v anglickém jazyce

The Strange Case of OGLE-SMC-ECL-0277

Popis výsledku anglicky

The eclipsing system OGLE-SMC-ECL-0277 was found to exhibit unusual photometric variability. Beside its eclipsing nature additional variations with the periodicity of about 1500 d are also seen. Variations of the eclipse depth during the time span of the observational data (mainly taken from the OGLE survey, partly our new ones) are the most pronounced. The complex behavior of all these changes makes this system absolutely unique, no such variability was ever detected and studied in other systems before. Hence, are there some new phenomena, new physics or an unknown effects playing a role? We tried to understand these variations using four different hypotheses (i.e., inclination change, spot evolution, and/or pulsation of one or both components) and comparing their results we discussed which of them is the most likely. Neither of the presented hypotheses is able to describe in detail the behavior of OGLE-SMC-ECL-0277. We also discuss a possibility that the variable can be a member of the so-called double periodic variables group.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

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

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

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Svazek periodika

67

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

13

Strana od-do

243-255

Kód UT WoS článku

000417556300003

EID výsledku v databázi Scopus

2-s2.0-85035356788