Photometric and spectroscopic investigation of nine Cepheids in the Cassiopeia constellation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00521387" target="_blank" >RIV/67985815:_____/19:00521387 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/19:00113495

Výsledek na webu

<a href="http://hdl.handle.net/11104/0306021" target="_blank" >http://hdl.handle.net/11104/0306021</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Photometric and spectroscopic investigation of nine Cepheids in the Cassiopeia constellation

Popis výsledku v původním jazyce

We present new multicolor BVRI photometry and low-resolution spectroscopy of 9 fundamental mode Cepheids in the Cassiopeia constellation. Observations were carried out during the 2017/2018 observing season. We investigated each particular light curve in detail using Fourier decomposition techniques which we compare with the Cepheids from the OGLE project. Using the Gaia parallaxes and the period-luminosity relation we estimated the absolute magnitudes and constructed the Hertzsprung-Russell diagram. Our findings agree with the previously published results except for V824 Cas. This star has small Fourier amplitudes and shows a discrepancy in the absolute magnitudes based on Gaia and period-luminosity relation. We propose that V824 Cas can either be a member of a binary system or is not a fundamental-mode Cepheid but an overtone Cepheid.

Název v anglickém jazyce

Photometric and spectroscopic investigation of nine Cepheids in the Cassiopeia constellation

Popis výsledku anglicky

We present new multicolor BVRI photometry and low-resolution spectroscopy of 9 fundamental mode Cepheids in the Cassiopeia constellation. Observations were carried out during the 2017/2018 observing season. We investigated each particular light curve in detail using Fourier decomposition techniques which we compare with the Cepheids from the OGLE project. Using the Gaia parallaxes and the period-luminosity relation we estimated the absolute magnitudes and constructed the Hertzsprung-Russell diagram. Our findings agree with the previously published results except for V824 Cas. This star has small Fourier amplitudes and shows a discrepancy in the absolute magnitudes based on Gaia and period-luminosity relation. We propose that V824 Cas can either be a member of a binary system or is not a fundamental-mode Cepheid but an overtone Cepheid.

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

<a href="/cs/project/EF16_027%2F0008360" target="_blank" >EF16_027/0008360: Postdoc@MUNI</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Contributions of the Astronomical Observatory Skalnaté Pleso

ISSN

1335-1842

e-ISSN

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Svazek periodika

49

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

19

Strana od-do

503-521

Kód UT WoS článku

000505925100002

EID výsledku v databázi Scopus

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