Araştırma Makalesi

KIC 4473933: A Magnetically Active Long Period System

Cilt: 2 Sayı: 2 31 Aralık 2021
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KIC 4473933: A Magnetically Active Long Period System

Abstract

Taking into account the results found by analyzing the Kepler data together with our new photometric observations as well as new spectroscopic observations, we present new findings about a highly eccentric detached eclipsing binary, KIC 4473933. For the primary and secondary components, we estimated that the radii of components were 1.80 Rsun and 8.98 Rsun, while the masses were 0.70 Msun and 0.40 Msun. We found a remarkable third light excess as much as ~70% of all total light. The frequency analysis of variations at out-of-eclipses reveals that the target exhibits pulsation. The g−modes seem to be dominant, but we noticed that the third body should be a long period pulsating star, depending on the ground-based observations.

Keywords

Teşekkür

We wish to thank the Turkish Scientific and Technical Research Council for supporting this work through grant No. 116F213. We thank to Ege University Observatory for a partial support in using R40. We wish to thank TÜBITAK National Observatory for a partial support in using RTT-150 (Russian-Turkish 1.5-m telescope in Antalya) with the project number 14BRTT150-667.

Kaynakça

  1. Aerts C., Christensen-Dalsgaard J., Kurtz D. W., 2010, Asteroseismology
  2. Bernhard K., Frank P., 2006, Information Bulletin on Variable Stars,5719, 1, ADS

Ayrıntılar

Birincil Dil

İngilizce

Konular

Astronomik Bilimler (Diğer)

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

31 Aralık 2021

Gönderilme Tarihi

8 Mayıs 2021

Kabul Tarihi

17 Aralık 2021

Yayımlandığı Sayı

Yıl 2021 Cilt: 2 Sayı: 2

Kaynak Göster

TJAA, Türk Astronomi Derneğinin (TAD) bir yayınıdır.