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

Yıl 2023, Cilt: 4 Sayı: 3 - Özel Sayı: 22. Ulusal Astronomi Kongresi Bildirileri, 128 - 133, 31.12.2023

Ergün Özgür Kutluay Yüce

https://doi.org/10.55064/tjaa.1199975

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

Öz

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.

Anahtar Kelimeler

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

Kaynakça

• Abt H. A., Morrell, N. I., 1995, Astrophysical Journal Supplement v.99, p.135
• Adelman, S. J., Dukes, R. J., Jr., Pyper, D. M. 1992. Photometry of eight magnetic peculiar A stars. Astronomical Journal (ISSN 0004-6256), vol. 104, no. 1, p. 314-326.
• Adelman Saul J., 2004, Monthly Notices of the Royal Astronomical Society, Volume 351, Issue 3, pp. 823-825.
• Adelman Saul J., 2008, Publications of the Astronomical Society of the Pacific, Volume 120, Issue 866, pp. 367
• Adelman Saul J., Woodrow S. L., 2007, The Publications of the Astronomical Society of the Pacific, Volume 119, Issue 861, pp. 1256-1267
• Aurière M., Wade G. A., Silvester J., Lignières F., Bagnulo S., vd., 2007, Astronomy and Astrophysics, Volume 475, Issue 3, December I 2007, pp.1053-1065
• Babcock H. W., 1949, The Observatory, Vol. 69, p. 191-192
• Babcock H. W., 1958, Magnetic fields in the A-type stars. Astrophys. J., 128, 228-258
• Baglin A., Fridlund M., 2006, ESA SP-1306. ISBN 92-9092-465-9., p.11
• Bohlender D. A., Landstreet J. D., Thompson, Ian B., 1993, Astronomy and Astrophysics, Vol. 269, p. 355-376
• Boisse I., Bonfils X., Santos N. C., 2012, Astronomy and Astrophysics, Volume 545, id.A109, 9 pp
• Budding E., 1977, Astrophysics and Space Science, Volume 48, Issue 1, pp.207-223
• Catalano F. A., Leone F. 1993. Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 100, no. 2, p. 319-330.
• Collier C. A., 1997, Monthly Notices of the Royal Astronomical Society, Volume 287, Issue 3, pp. 556-566
• Deutsch, A. J. 1958. in I.A.U. Symp. No. 6, ed. B. Lehnert (Amsterdam: North-Holland Publishing Co.) p. 209.
• Dorren J. D., 1987, Astrophysical Journal v.320, p.756
• Eker Z., 1994, Astrophysical Journal v.420, p.373
• Gebran M., Farah W., Paletou F., Monier R., Watson V., 2016, Astronomy and Astrophysics, Volume 589, id.A83, 10 pp
• Glagolevskij Yu. V., 2007, Astrophysical Bulletin, Volume 62, Issue 3, pp.244-256
• Glagolevskij Yu. V., 2019, Astrophysical Bulletin, Volume 74, Issue 1, pp.66-79
• Gray R. O., Corbally C. J., 2002, The Astronomical Journal, Volume 124, Issue 2, pp. 989-1000
• Kipping D. M., 2012, 'An Analytic Model for Rotational Modulations the Photometry of Spotted Stars', MNRAS, 427, 2487
• Krtička J., Mikulášek Z., Lüftinger T., Shulyak D. vd., 2012, Astronomy and Astrophysics, Volume 537, id.A14, 14 pp.
• Lomb, N. R. 1976. Least-Squares Frequency Analysis of Unequally Spaced Data. Astrophysics and Space Science, vol. 39, p.447-462.
• Lanza A. F., Bonomo A. S., Moutou C. Vd., 2010, Astronomy and Astrophysics, Volume 520, id.A53, 13 pp.
• Lenz, P. and Breger, M. 2005. Period04 User Guide. Communications in Asteroseismology, vol. 146, p.53-136.
• Lüftinger T., Fröhlich H.-E., Weiss W. W., Petit P., 2010, Volume 509, id.A43, 11 pp.
• Mislis D., Schmitt J. H. M. M., Carone L., Guenther E. W., Pätzold M., 2010, Astronomy and Astrophysics, Volume 522, id. A86, 8 pp.
• Montalto M., Boué G., Oshagh M., Boisse I., Bruno G., Santos N. C., 2014, Monthly Notices of the Royal Astronomical Society, Volume 444, Issue 2, p.1721-1728
• Netopil M., Paunzen E., Hümmerich S., Bernhard K., 2017, Royal Astronomical Society, Volume 468, Issue 3, p.2745-2756
• North P., Adelman S. J. 1995. Astronomy and Astrophysics Supplement, v.111, p.41
• Oshagh M., Boisse I., Boué G., Montalto M.,2013. Astronomy and Astrophysics, Volume 549, id.A35, 8 pp
• Özgür E., 2020, Ankara Üniversitesi Fen Bilimleri Enstitüsü, Yüksek Lisans Tezi.
• Paunzen E., Fröhlich H.-E., Netopil M., Weiss W. W., Lüftinger T.,2015, Astronomy and Astrophysics, Volume 574, id.A57, 5 pp.
• Pyper D. M., 1969, Astrophysical Journal Supplement, vol. 18, p.347
• Pyper D. M., Adelman, S. J. 2004,. Cambridge, UK. Cambridge University Press, 2004., p.307-314
• Scargle, J. D. 1982. Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p.835-853.
• Sing D. K., 2010, Astronomy and Astrophysics, Volume 510, id. A21
• Stepien K., 1989, Astronomy and Astrophysics, Vol. 220, p. 105-111
• Stibbs D. W. N., 1950, Monthly Notices of the Royal Astronomical Society, Vol. 110, p.395
• Wenger M., Ochsenbein F., Egret D., Dubois P., Bonnarel F., vd., 2000, "The SIMBAD astronomical database", Astronomy and Astrophysics,143,9.
• Winzer, J. E., 1974., UBV photometry of four magnetic stars. Astronomical Journal, Vol. 79, p.124-127.