New Tools for Finding and Testing Weak Periodic Variability

D 2015

New Tools for Finding and Testing Weak Periodic Variability

MIKULÁŠEK, Zdeněk, Ernst PAUNZEN, Martin NETOPIL a Miloslav ZEJDA

Základní údaje

Originální název

New Tools for Finding and Testing Weak Periodic Variability

Název česky

Nové nástroje pro hledání a testování slabé periodické proměnnosti

Autoři

MIKULÁŠEK, Zdeněk (203 Česká republika, garant, domácí), Ernst PAUNZEN (40 Rakousko, domácí), Martin NETOPIL (40 Rakousko, domácí) a Miloslav ZEJDA (203 Česká republika, domácí)

Vydání

494. vyd. San Francisco, Physics and Evolution of Magnetic and Related Stars, od s. 320-330, 11 s. 2015

Nakladatel

Astronomical Society of the Pacific

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

tištěná verze "print"

Kód RIV

RIV/00216224:14310/15:00080813

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-1-58381-873-2

UT WoS

000366452300040

Klíčová slova anglicky

periodograms

Štítky

AKR, rivok

Změněno: 28. 4. 2016 14:29, Ing. Andrea Mikešková

Anotace

V originále

Our paper presents new methods for finding and testing weak periodic variability of stellar objects, developed for the purpose of detecting the expected regular light variations of magnetic chemically peculiar (mCP) candidates in the Large Magellanic Cloud. We introduce two new periodograms of the mCP star BS Cir (HD 125630), appropriate for rotating the spotted variables, and compare the results with those obtained by the well-known Lomb–Scargle periodogram. The use of periodograms and testing the significance of the found period candidates are demonstrated with two examples: the observed and simulated observations of the magnetic field of the mCP star CQ UMa (HD 119213) and the mCP candidate OGLE LMC136.7 16501. Three newly developed tests of periodic variability, namely the shuffling, bootstrap, and subsidiary ones, are presented. We demonstrate that the found periodic variations known with the signal-to-noise ratio larger than 6 can be approved to be real.

Návaznosti

GAP209/12/0217, projekt VaV

Název: Multispektrální proměnnost horkých hvězd a její příčiny

Investor: Grantová agentura ČR, Multispektrální proměnnost horkých hvězd a její příčiny

3SGA5916, interní kód MU

Název: Hvězdy a hvězdokupy v Magellanových mračnech (Akronym: Webda MaC)

Investor: Jihomoravský kraj, Hvězdy a hvězdokupy v Magellanových mračnech, Granty pro zahraniční vědce

Citovat

MIKULÁŠEK, Zdeněk, Ernst PAUNZEN, Martin NETOPIL a Miloslav ZEJDA. New Tools for Finding and Testing Weak Periodic Variability. In Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I. Physics and Evolution of Magnetic and Related Stars. 494. vyd. San Francisco: Astronomical Society of the Pacific, 2015, s. 320-330. ISBN 978-1-58381-873-2.

@inproceedings{1300055,
   author = {Mikulášek, Zdeněk and Paunzen, Ernst and Netopil, Martin and Zejda, Miloslav},
   address = {San Francisco},
   booktitle = {Physics and Evolution of Magnetic and Related Stars},
   edition = {494},
   editor = {Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I.},
   keywords = {periodograms},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {San Francisco},
   isbn = {978-1-58381-873-2},
   pages = {320-330},
   publisher = {Astronomical Society of the Pacific},
   title = {New Tools for Finding and Testing Weak Periodic Variability},
   year = {2015}
}

TY  - JOUR
ID  - 1300055
AU  - Mikulášek, Zdeněk - Paunzen, Ernst - Netopil, Martin - Zejda, Miloslav
PY  - 2015
TI  - New Tools for Finding and Testing Weak Periodic Variability
PB  - Astronomical Society of the Pacific
CY  - San Francisco
SN  - 9781583818732
KW  - periodograms
N2  - Our paper presents new methods for finding and testing weak periodic variability of stellar objects, developed for the purpose of detecting the expected regular light variations of magnetic chemically peculiar (mCP) candidates in the Large Magellanic Cloud. We introduce two new periodograms of the mCP star BS Cir (HD 125630), appropriate for rotating the spotted variables, and compare the results with those obtained by the well-known Lomb–Scargle periodogram. The use of periodograms and testing the significance of the found period candidates are demonstrated with two examples: the observed and simulated observations of the magnetic field of the mCP star CQ UMa (HD 119213) and the mCP candidate OGLE LMC136.7 16501. Three newly developed tests of periodic variability, namely the shuffling, bootstrap, and subsidiary ones, are presented. We demonstrate that the found periodic variations known with the signal-to-noise ratio larger than 6 can be approved to be real.
ER  -

MIKULÁŠEK, Zdeněk, Ernst PAUNZEN, Martin NETOPIL a Miloslav ZEJDA. New Tools for Finding and Testing Weak Periodic Variability. In Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I. \textit{Physics and Evolution of Magnetic and Related Stars}. 494. vyd. San Francisco: Astronomical Society of the Pacific, 2015, s.~320-330. ISBN~978-1-58381-873-2.

Podrobný výpis o publikaci