Extended Aperture Photometry of K2 RR Lyrae stars

J 2019

Extended Aperture Photometry of K2 RR Lyrae stars

PLACHY, Emese, Laszlo MOLNAR, Attila BODI, Marek SKARKA, Pal SZABO et. al.

Basic information

Original name

Extended Aperture Photometry of K2 RR Lyrae stars

Authors

PLACHY, Emese, Laszlo MOLNAR, Attila BODI, Marek SKARKA (203 Czech Republic, belonging to the institution), Pal SZABO, Robert) SZABO, Peter KLAGYIVIK, Adam SODOR and Benjamin J. S. POPE

Edition

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, BRISTOL, IOP PUBLISHING LTD, 2019, 0067-0049

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Full Text

Impact factor

Impact factor: 7.950

RIV identification code

RIV/00216224:14310/19:00111906

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.3847/1538-4365/ab4132

UT WoS

000502057800006

Keywords in English

ANOMALOUS CEPHEIDS; OGLE COLLECTION; MODE; CATALOG

Abstract

V originále

The Kepler Space Telescope observed thousands of RR Lyrae stars in the K2 mission. In this paper, we present our photometric solutions using extended apertures in order to conserve the flux of the stars to the highest possible extent. With this method, we are able to avoid most of the problems that RR Lyrae light curves produced by other pipelines suffer from. For post-processing, we apply the K2SC pipeline to our light curves. We provide the EAP (Extended Aperture Photometry) of 432 RR Lyrae stars observed in campaigns 3, 4, 5, and 6. We also provide subclass classifications based on Fourier parameters. We investigated in particular the presence of the Blazhko effect in the stars and found it to be 44.7% among the RRab stars, in agreement with results from independent samples. We found that the amplitude and phase modulation in the Blazhko stars may behave rather differently, at least over the length of a K2 Campaign. We also identified four anomalous Cepheid candidates in the sample, one of which is potentially the first Blazhko-modulated member of its class.

Links

EF16_027/0008360, research and development project

Name: Postdoc@MUNI

Citovat

PLACHY, Emese, Laszlo MOLNAR, Attila BODI, Marek SKARKA, Pal SZABO, Robert) SZABO, Peter KLAGYIVIK, Adam SODOR and Benjamin J. S. POPE. Extended Aperture Photometry of K2 RR Lyrae stars. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. BRISTOL: IOP PUBLISHING LTD, 2019, vol. 244, No 2, p. 1-16. ISSN 0067-0049. Available from: https://dx.doi.org/10.3847/1538-4365/ab4132.

@article{1596958,
   author = {Plachy, Emese and Molnar, Laszlo and Bodi, Attila and Skarka, Marek and Szabo, Pal and Szabo, Robert) and Klagyivik, Peter and Sodor, Adam and Pope, Benjamin J. S.},
   article_location = {BRISTOL},
   article_number = {2},
   doi = {http://dx.doi.org/10.3847/1538-4365/ab4132},
   keywords = {ANOMALOUS CEPHEIDS; OGLE COLLECTION; MODE; CATALOG},
   language = {eng},
   issn = {0067-0049},
   journal = {ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES},
   title = {Extended Aperture Photometry of K2 RR Lyrae stars},
   url = {https://iopscience.iop.org/article/10.3847/1538-4365/ab4132},
   volume = {244},
   year = {2019}
}

TY  - JOUR
ID  - 1596958
AU  - Plachy, Emese - Molnar, Laszlo - Bodi, Attila - Skarka, Marek - Szabo, Pal - Szabo, Robert) - Klagyivik, Peter - Sodor, Adam - Pope, Benjamin J. S.
PY  - 2019
TI  - Extended Aperture Photometry of K2 RR Lyrae stars
JF  - ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
VL  - 244
IS  - 2
SP  - 1-16
EP  - 1-16
PB  - IOP PUBLISHING LTD
SN  - 00670049
KW  - ANOMALOUS CEPHEIDS
KW  - OGLE COLLECTION
KW  - MODE
KW  - CATALOG
UR  - https://iopscience.iop.org/article/10.3847/1538-4365/ab4132
L2  - https://iopscience.iop.org/article/10.3847/1538-4365/ab4132
N2  - The Kepler Space Telescope observed thousands of RR Lyrae stars in the K2 mission. In this paper, we present our photometric solutions using extended apertures in order to conserve the flux of the stars to the highest possible extent. With this method, we are able to avoid most of the problems that RR Lyrae light curves produced by other pipelines suffer from. For post-processing, we apply the K2SC pipeline to our light curves. We provide the EAP (Extended Aperture Photometry) of 432 RR Lyrae stars observed in campaigns 3, 4, 5, and 6. We also provide subclass classifications based on Fourier parameters. We investigated in particular the presence of the Blazhko effect in the stars and found it to be 44.7% among the RRab stars, in agreement with results from independent samples. We found that the amplitude and phase modulation in the Blazhko stars may behave rather differently, at least over the length of a K2 Campaign. We also identified four anomalous Cepheid candidates in the sample, one of which is potentially the first Blazhko-modulated member of its class.
ER  -

PLACHY, Emese, Laszlo MOLNAR, Attila BODI, Marek SKARKA, Pal SZABO, Robert) SZABO, Peter KLAGYIVIK, Adam SODOR and Benjamin J. S. POPE. Extended Aperture Photometry of K2 RR Lyrae stars. \textit{ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES}. BRISTOL: IOP PUBLISHING LTD, 2019, vol.~244, No~2, p.~1-16. ISSN~0067-0049. Available from: https://dx.doi.org/10.3847/1538-4365/ab4132.

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