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

Kinematic and Photometric Analysis of Scorpius-Centaurus OB Association

Scorpius-Centaurus OB Oymağının Kinematik ve Fotometrik Analizi

Burcu Akbulut(ISTANBUL UNIVERSITY, FACULTY OF SCIENCE, DEPARTMENT OF ASTRONOMY AND SPACE SCIENCES, ASTRONOMY AND SPACE SCIENCES PR.)0000-0003-3961-9460
Tansel Ak(İSTANBUL ÜNİVERSİTESİ, FEN FAKÜLTESİ, ASTRONOMİ VE UZAY BİLİMLERİ BÖLÜMÜ)0000-0002-0688-1983
Selçuk Bilir(İSTANBUL ÜNİVERSİTESİ, FEN FAKÜLTESİ, ASTRONOMİ VE UZAY BİLİMLERİ BÖLÜMÜ)0000-0003-3510-1509
Eyüp Kaan Ülgen(İSTANBUL ÜNİVERSİTESİ, FEN BİLİMLERİ ENSTİTÜSÜ, ASTRONOMİ VE UZAY BİLİMLERİ (DR))0000-0002-8056-4214
Lanz Anthonee Avila Lagman(University of the Philippines Diliman)0000-0002-0737-0405
Pages
90–96
Publication Date
2023-12-31
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AI Summary & Key Takeaways

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

We provide cluster analysis of subgroups using MESA age isochrones to reveal the star formation history of each region.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:OB associations of young stars are the laboratories that keep track of star formation from the birth of a star cloud to its dissolution.
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Key Findings & Data:Sco OB2 association closest to the Sun is also an example of massive star formation.
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Conclusion & Impact:We provide cluster analysis of subgroups using MESA age isochrones to reveal the star formation history of each region.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Galaxy: open clusters and associations · individual: Sco-Cen OB association · Stars: Hertzsprung Russell (HR) diagram

Abstract

OB associations of young stars are the laboratories that keep track of star formation from the birth of a star cloud to its dissolution. Sco OB2 association closest to the Sun is also an example of massive star formation. In this study, we research the Sco OB2 region up to G = 17.5 mag in the circular region within 1 radius centred (l, b) = (322, +10) due to the high quality of the stellar parallax and proper motions of {\it Gaia} DR3. We applied the DBSCAN clustering algorithm to the selected region to identify subgroups and new members of the tribe. In total, we identified 40 subgroups and 4777 member stars. We provide cluster analysis of subgroups using MESA age isochrones to reveal the star formation history of each region.

Özet

Genç yıldızlardan oluşan OB oymakları, bir yıldız bulutunun doğumundan dağılmasına kadar yıldız oluşumunun kaydını tutan laboratuvarlardır. Güneş’e en yakın olan Sco-Cen (Sco OB2) oymağı, aynı zamanda kütleli yıldız oluşumunun da bir örneğidir. Bu çalışmada Gaia DR3’ün yıldız parakslarının ve özhareketlerinin yüksek kalitesinden dolayı (l, b) = (322◦, +10◦) merkezli 1 yarıçap içindeki dairesel bölgede G = 17.5 mag’a kadar olan Sco OB2 bölgesini incelemekteyiz. Oymağın alt-gruplarını ve yeni üyelerini belirleyebilmek için DBSCAN kümeleme algoritmasını seçilen bölgeye uyguladık. Toplamda 40 alt-grup ve 4777 üye yıldız belirledik. Her bölgenin yıldız oluşum tarihini ortaya çıkarmak için PARSEC ishocrone'larını kullanarak altgrupların kümelenme analizini sağlıyoruz.

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Cite This Article

Akbulut, B., Ak, T., Bilir, S., Ülgen, E. K., Lagman, L. A. A. (2023). Kinematic and Photometric Analysis of Scorpius-Centaurus OB Association. Turkish Journal of Astronomy and Astrophysics, Cilt: 4 Sayı: 3 Özel Sayı, 90–96. https://doi.org/10.55064/tjaa.1203752

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