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.

Basic information

Original name

The Strange Case of OGLE-SMC-ECL-0277

Authors

ZASCHE, Petr (203 Czech Republic, guarantor), Marek WOLF (203 Czech Republic), Jan VRAŠTIL (203 Czech Republic), Petr FATKA (203 Czech Republic), Adrian GALÁD (703 Slovakia), Kamil HORNOCH (203 Czech Republic), Zdeněk JANÁK (203 Czech Republic), Jan JANÍK (203 Czech Republic, belonging to the institution), Eva KORTUSOVÁ (203 Czech Republic), Petr KURFÜRST (203 Czech Republic, belonging to the institution), Peter KUŠNIRÁK (703 Slovakia), Ernst PAUNZEN (40 Austria, belonging to the institution), Luděk ŘEZBA (203 Czech Republic), Viktor VOTRUBA (203 Czech Republic), Miloslav ZEJDA (203 Czech Republic, belonging to the institution) and Pawel ZIELIŃSKI (616 Poland, belonging to the institution)

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.667

RIV identification code

RIV/00216224:14310/17:00098476

Organization unit

Faculty of Science

UT WoS

000417556300003

Keywords in English

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

Abstract

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.

Links

LG15010, research and development project

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

Investor: Ministry of Education, Youth and Sports of the CR

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 and Pawel ZIELIŃSKI. The Strange Case of OGLE-SMC-ECL-0277. Acta Astronomica. WARSAW, POLAND: COPERNICUS FOUNDATION POLISH ASTRONOMY, 2017, vol. 67, No 3, p. 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 and Pawel ZIELI$\backslash$'NSKI. The Strange Case of OGLE-SMC-ECL-0277. \textit{Acta Astronomica}. WARSAW, POLAND: COPERNICUS FOUNDATION POLISH ASTRONOMY, 2017, vol.~67, No~3, p.~243-255. ISSN~0001-5237.

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