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Journals / Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji / 2026 / Cilt: 14 Sayı: 3

TIC 236653616: A Long-Period Eclipsing Binary Candidate Comprising a Sun-like Star and a low-mass late-type Companion

TIC 236653616: Güneş Benzeri Bir Yıldız ile Düşük Kütleli, Geç Tip Bir Eş Yıldızdan Oluşan Uzun Periyotlu Örten Çift Yıldız Adayı

Kaan Kaplan(SİVAS BİLİM VE TEKNOLOJİ ÜNİVERSİTESİ, HAVACILIK VE UZAY BİLİMLERİ FAKÜLTESİ)0000-0003-0631-1961
Pages
1697–1709
Publication Date
2026-09-30
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AI Summary & Key Takeaways

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

These results provide a robust orbital solution and a high-fidelity baseline for future radial velocity studies to determine the absolute masses of the components.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study presents a detailed photometric characterization of TIC 236653616, identified as a detached eclipsing binary system using high-cadence data from TESS Sector 83.
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Key Findings & Data:Initial periodogram analysis via the Box Least Squares algorithm suggested a 10.04-day cycle; however, phase-folding and differentiation between primary (10.334%) and secondary (9.297%) eclipse depths confirmed a true orbital period of 20.0872 days.
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Conclusion & Impact:These results provide a robust orbital solution and a high-fidelity baseline for future radial velocity studies to determine the absolute masses of the components.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Örten Çift Yıldızlar · Yıldız Parametreleri · Fotometri

Abstract

This study presents a detailed photometric characterization of TIC 236653616, identified as a detached eclipsing binary system using high-cadence data from TESS Sector 83. Initial periodogram analysis via the Box Least Squares algorithm suggested a 10.04-day cycle; however, phase-folding and differentiation between primary (10.334%) and secondary (9.297%) eclipse depths confirmed a true orbital period of 20.0872 days. To ensure the astrophysical nature of the signal, rigorous vetting procedures were applied, including centroid analysis which yielded a PRF fit quality of 0.995, and an Even-Odd consistency check that ruled out instrumental false positives (1.10σ). The system parameters were derived using a Bayesian framework incorporating a quadratic limb darkening model. Markov Chain Monte Carlo simulations converge on a high inclination orbit (i ≈ 88.3°) consisting of a Sun-like primary star (R1 ≈ 1.05 R⊙) and a secondary low-mass late-type companion (R2 ≈ 0.33 R⊙). These results provide a robust orbital solution and a high-fidelity baseline for future radial velocity studies to determine the absolute masses of the components.

Özet

Bu çalışma, TESS Sektör 83 verileri kullanılarak TIC 236653616 sisteminin fotometrik analizini ve örten çift yıldız olarak karakterizasyonunu sunmaktadır. Box Least Squares (BLS) algoritması ile yapılan ilk incelemeler 10.04 günlük bir periyoda işaret etse de, evreye katlama analizi sonucunda birincil (%10.334) ve ikincil (%9.297) tutulma derinliklerinin ayrışmasıyla gerçek yörünge periyodunun 20.0872 gün olduğu saptanmıştır. Sinyalin astrofiziksel kökenini doğrulamak amacıyla uygulanan centroid vetting analizi 0.995 PRF uyum kalitesiyle sinyalin hedef yıldızdan geldiğini kanıtlamış, Even-Odd testi ise enstrümantal hata olasılığını (1.10σ) dışlamıştır. Sistemin fiziksel parametreleri, kuadratik kenar kararması (limb darkening) modelini içeren Bayesian yaklaşımı ve Markov Chain Monte Carlo simülasyonları ile hesaplanmıştır. Elde edilen sonuçlar, 88.3° eğime sahip bir yörüngede dolanan Güneş benzeri bir ana kol yıldızı (R1 ≈ 1.05 R⊙) ve bir M-cüce bileşenden (R2 ≈ 0.33 R⊙) oluşan kararlı bir sistem konfigürasyonunu ortaya koymaktadır. Bu çalışma, bileşenlerin mutlak kütlelerinin belirlenmesi için gelecekte yapılacak radyal hız (radial velocity) gözlemleri için hassas bir temel oluşturmaktadır.

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Cite This Article

Kaplan, K. (2026). TIC 236653616: A Long-Period Eclipsing Binary Candidate Comprising a Sun-like Star and a low-mass late-type Companion. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, Cilt: 14 Sayı: 3, 1697–1709. https://doi.org/10.29109/gujsc.1952299

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