The Strange Case of OGLE-SMC-ECL-0277

J 2017

The Strange Case of OGLE-SMC-ECL-0277

ZASCHE, Petr; Marek WOLF; Jan VRAŠTIL; Petr FATKA; Adrian GALÁD et al.

Základní údaje

Originální název

The Strange Case of OGLE-SMC-ECL-0277

Autoři

Vydání

Acta Astronomica, WARSAW, POLAND, COPERNICUS FOUNDATION POLISH ASTRONOMY, 2017, 0001-5237

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.667

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/17:00098476

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000417556300003

EID Scopus

2-s2.0-85035356788

Klíčová slova anglicky

binaries: eclipsing; Stars: fundamental parameters; Stars: individual: OGLE-SMC-ECL-0277

Štítky

NZ, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 12. 4. 2018 14:59, Ing. Nicole Zrilić

Anotace

V originále

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.

Návaznosti

LG15010, projekt VaV

Název: F. Magellanes: projekt podpory studia hvězd a hvězdných soustav na základě pozorování ze Země a z kosmického prostoru (Akronym: Magellan2015)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, F. Magellanes: projekt podpory studia hvězd a hvězdných soustav na základě pozorování ze Země a z kosmického prostoru

Citovat

ZASCHE, Petr; Marek WOLF; Jan VRAŠTIL; Petr FATKA; Adrian GALÁD; Kamil HORNOCH; Zdeněk JANÁK; Jan JANÍK; Eva KORTUSOVÁ; Petr KURFÜRST; Peter KUŠNIRÁK; Ernst PAUNZEN; Luděk ŘEZBA; Viktor VOTRUBA; Miloslav ZEJDA a Pawel ZIELIŃSKI. The Strange Case of OGLE-SMC-ECL-0277. Acta Astronomica. WARSAW, POLAND: COPERNICUS FOUNDATION POLISH ASTRONOMY, 2017, roč. 67, č. 3, s. 243-255. ISSN 0001-5237.

@article{1396509,
   author = {Zasche, Petr and Wolf, Marek and Vraštil, Jan and Fatka, Petr and Galád, Adrian and Hornoch, Kamil and Janák, Zdeněk and Janík, Jan and Kortusová, Eva and Kurfürst, Petr and Kušnirák, Peter and Paunzen, Ernst and Řezba, Luděk and Votruba, Viktor and Zejda, Miloslav and Zieliński, Pawel},
   article_location = {WARSAW, POLAND},
   article_number = {3},
   keywords = {binaries: eclipsing; Stars: fundamental parameters; Stars: individual: OGLE-SMC-ECL-0277},
   language = {eng},
   issn = {0001-5237},
   journal = {Acta Astronomica},
   title = {The Strange Case of OGLE-SMC-ECL-0277},
   url = {http://adsabs.harvard.edu/abs/2017AcA....67..243Z},
   volume = {67},
   year = {2017}
}

TY  - JOUR
ID  - 1396509
AU  - Zasche, Petr - Wolf, Marek - Vraštil, Jan - Fatka, Petr - Galád, Adrian - Hornoch, Kamil - Janák, Zdeněk - Janík, Jan - Kortusová, Eva - Kurfürst, Petr - Kušnirák, Peter - Paunzen, Ernst - Řezba, Luděk - Votruba, Viktor - Zejda, Miloslav - Zieliński, Pawel
PY  - 2017
TI  - The Strange Case of OGLE-SMC-ECL-0277
JF  - Acta Astronomica
VL  - 67
IS  - 3
SP  - 243-255
EP  - 243-255
PB  - COPERNICUS FOUNDATION POLISH ASTRONOMY
SN  - 00015237
KW  - binaries: eclipsing
KW  - Stars: fundamental parameters
KW  - Stars: individual: OGLE-SMC-ECL-0277
UR  - http://adsabs.harvard.edu/abs/2017AcA....67..243Z
L2  - http://adsabs.harvard.edu/abs/2017AcA....67..243Z
N2  - 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.
ER  -

ZASCHE, Petr; Marek WOLF; Jan VRAŠTIL; Petr FATKA; Adrian GALÁD; Kamil HORNOCH; Zdeněk JANÁK; Jan JANÍK; Eva KORTUSOVÁ; Petr KURFÜRST; Peter KUŠNIRÁK; Ernst PAUNZEN; Luděk ŘEZBA; Viktor VOTRUBA; Miloslav ZEJDA a Pawel ZIELI$\backslash$'NSKI. The Strange Case of OGLE-SMC-ECL-0277. \textit{Acta Astronomica}. WARSAW, POLAND: COPERNICUS FOUNDATION POLISH ASTRONOMY, 2017, roč.~67, č.~3, s.~243-255. ISSN~0001-5237.

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