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Journals / Turkish Journal of Astronomy and Astrophysics / 2023 / Cilt: 4 Sayı: 3 Özel Sayı

Some Findings from the Longitudinal Migration of Starspots

Soğuk Yıldız Lekelerinin Boylamsal Göç Hareketinde Görünen Salınımlar

Nurhan Özlem Kaya(EGE ÜNİVERSİTESİ, FEN BİLİMLERİ ENSTİTÜSÜ)0000-0002-4093-1024
Ali Dal(EGE ÜNİVERSİTESİ)0000-0002-1078-6620
Pages
377–387
Publication Date
2023-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result, we found that the longitudinal migration periods vary versus the stellar B-V color indexes and their temperatures.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the behavior of cool stellar spots on active stars with temperatures between F and M spectral types in the main sequence and the causes of oscillations in the longitudinal migration they exhibit are interpreted. 10 targets showing sinusoidal changes due to cool spot in their light curves were selected and analyzes were carried out by taking high resolution observation data of the systems obtained by the Kepler Satellite.
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Key Findings & Data:The examined systems; KIC4357272, KIC6025466, KIC6058875, KIC6962018, KIC7798259, KIC9210828, KIC11706658, KIC12599700, KIC8669092 and KIC7671594.
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Conclusion & Impact:As a result, we found that the longitudinal migration periods vary versus the stellar B-V color indexes and their temperatures.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:binary systems · stellar activity · starspots

Abstract

In this study, the behavior of cool stellar spots on active stars with temperatures between F and M spectral types in the main sequence and the causes of oscillations in the longitudinal migration they exhibit are interpreted. 10 targets showing sinusoidal changes due to cool spot in their light curves were selected and analyzes were carried out by taking high resolution observation data of the systems obtained by the Kepler Satellite. The examined systems; KIC4357272, KIC6025466, KIC6058875, KIC6962018, KIC7798259, KIC9210828, KIC11706658, KIC12599700, KIC8669092 and KIC7671594. The longitudinal migration of the spots, the thetamin exchange and residues were determined and interpreted. As a result, we found that the longitudinal migration periods vary versus the stellar B-V color indexes and their temperatures.

Özet

Bu çalışmada, anakolda F ile M tayf türleri arasında sıcaklıklara sahip olan aktif yıldızlar üzerindeki soğuk yıldız lekelerinin davranışları ve sergiledikleri boylamsal göç hareketinde görünen salınımların nedenleri yorumlanmıştır. Işık eğrilerinde soğuk leke kaynaklı sinüzoidal değişim gösteren 10 adet çift sistem seçilmiş ve sistemlerin Kepler Uydusu tarafından elde edilen yüksek çözünürlüklü gözlem verileri alınarak, analizler gerçekleştirilmiştir. İncelenen sistemler; KIC4357272, KIC6025466, KIC6058875, KIC6962018, KIC7798259, KIC9210828, KIC11706658, KIC12599700, KIC8669092 ve KIC7671594. Lekelerin boylamsal göç hareketi, thetamin değişimi ve artıkları tespit edilip yorumlanmıştır. Sonucunda, F ile M tayf türleri arasında farklı sıcaklıklara sahip olan aktif yıldızların üzerindeki lekelerin boylamsal göç dönemlerinin, (B-V) ve sıcaklığın bir fonksiyonu olarak değiştiği bulunmuştur.

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Cite This Article

Kaya, N. Ö., Dal, A. (2023). Some Findings from the Longitudinal Migration of Starspots. Turkish Journal of Astronomy and Astrophysics, Cilt: 4 Sayı: 3 Özel Sayı, 377–387. https://doi.org/10.55064/tjaa.1199879

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