Manyetik Özellikli Kimyasal Sıra Dışı Yıldızların CoRoT Verileriyle Periyot ve Yüzey Leke Analizleri

Öz

Bu çalışmada, manyetik özellikli kimyasal sıra dışı (mCP) HD 171586 ve HD 170973 yıldızlarının CoRoT uyudu gözlem verilerine dayalı fotometrik analizleri gerçekleştirildi. Periyot analizlerinde Period04 (Lenz ve Breger 2005) ve Lomb- Scargle (Lomb 1976, Scargle 1982) programları kullanılarak yıldızların dönme periyotları belirlendi. İncelenen manyetik özellikli A tayf türüne sahip kimyasal sıra dışı iki yıldızın oldukça duyarlı, kesintisiz, uzun zaman aralığını kapsayan gözlemsel verilerinden tespit edilen fotometrik ışık değişimleri değerlendirilerek, Dorren (Dorren 1987) ve M acula (Kipping 2012) programları ile yüzey element bolluk dağılımları ilk kez incelendi. HD 171586 ve HD 170973 yıldızları için, sırasıyla, üç ve iki sıcak lekeye uyumlu yüzey haritalı modellerin uygun olduğu anlaşıldı.

Anahtar Kelimeler

• chemically peculiar
• stars
• photometry
• starspots
• period analysis
• periyot analizi
• leke modeli
• spot model

Period and Surface Spot Analysis of Magnetically Chemically Peculiar Stars with CoRoT Data

Abstract

In this study, photometric analysis of magnetic chemically peculiar (mCP) stars HD 171586 and HD 170973 was carried out based on CoRoT satellite-telescope observation data. Period04 (Lenz ve Breger 2005) and Lomb-Scargle (Lomb 1976, Scargle 1982) programs were used for period analysis. The high-resolution, continuous and long-exposure observation data for the two type magnetic and chemically peculiar A stars were employed in Dorren (Dorren 1987) and M acula (Kipping 2012) programs for surface spot analyses. HD 171586 and HD 170973 have been shown to comply with the three and two surface-spot stellar models, respectively.

Keywords

• chemically peculiar
• stars
• photometry
• starspots
• periyot analizi
• period analysis
• leke modeli
• spot model

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