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Soğuk Yıldız Lekelerinin Boylamsal Göç Hareketinde Görünen Salınımlar

Year 2023, , 377 - 387, 31.12.2023
https://doi.org/10.55064/tjaa.1199879

Abstract

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.

References

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Some Findings from the Longitudinal Migration of Starspots

Year 2023, , 377 - 387, 31.12.2023
https://doi.org/10.55064/tjaa.1199879

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.

References

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  • Balaji B., Croll B., Levine A. M., Rappaport S., 2015, MNRAS, 448, 429
  • Balona L. A., 2015, MNRAS, 447, 2714
  • Berdyugina S. V., Tuominen I., 1998, A&A, 336, L25, ADS
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  • Bopp B. W., Evans D. S., 1973, MNRAS, 164, 343
  • Bradshaw S. J., Hartigan P., 2014, ApJ, 795, 79
  • Caldwell D. A., et al., 2010, ApJ, 713, L92
  • Dal H. A., Özdarcan O., 2018, MNRAS, 474, 326
  • Dal H. A., Sipahi E., Özdarcan O., 2012, PASJ, 64, 125
  • Friedemann C., Guertler J., 1975, Astronomische Nachrichten, 296, 125
  • Gao Q., Xin Y., Liu J.-F., Zhang X.-B., Gao S., 2016, ApJS, 224, 37
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  • Koch D. G., et al., 2010, ApJ, 713, L79
  • Kron G. E., 1952, ApJ, 115, 301
  • Kunkel W., 1975, IAU Symposium, 67, 15, ADS
  • Lenz P., Breger M., 2005, Communications in Asteroseismology, 146, 53
  • Lopez Arroyo M., 1961, The Observatory, 81, 205, ADS
  • Lucy L. B., 1967, Z. Astrophys., 65, 89, ADS
  • Matijevič G., Prša A., Orosz J. A., Welsh W. F., Bloemen S., Barclay T., 2012, AJ, 143, 123
  • Mekkaden M. V., Raveendran A. V., 1998, A&A, 338, 1031, ADS
  • Morris S. L., 1985, ApJ, 295, 143
  • Morton T. D., Bryson S. T., Coughlin J. L., Rowe J. F., Ravichandran G., Petigura E. A., Haas M. R., Batalha N. M., 2016, ApJ, 822, 86
  • Pinsonneault M. H., An D., Molenda-Zakowicz J., Chaplin W. J., Metcalfe T. S., Bruntt H., 2012, VizieR Online Data Catalog, p. J/ApJS/199/30, ADS
  • Prša A., Zwitter T., 2005, ApJ, 628, 426
  • Qian S. B., Zhang J., He J. J., Zhu L. Y., Zhao E. G., Shi X. D., Zhou X., Han Z. T., 2018, ApJS, 235, 5
  • Rosario M. J., Heckert P. A., Mekkaden M. V., Raveendran A. V., 2009, MNRAS, 394, 872
  • Rowe J. F., et al., 2015, ApJS, 217, 16
  • Ruciński S. M., 1969, Acta Astron., 19, 245, ADS
  • Shibayama T., et al., 2013, ApJS, 209, 5
  • Slawson R. W., et al., 2011, AJ, 142, 160
  • Stanek W., 1972, Sol. Phys., 27, 89
  • Taş G., Evren S., Marino G., Frasca A., Ibanoğlu C., Catalano S., 2001, A&A, 376, 966
  • Thompson S. E., Mullally F., Coughlin J., Christiansen J. L., Henze C. E., Haas M. R., Burke C. J., 2015, ApJ, 812, 46
  • Tokunaga A. T., 2000, in Cox A. N., ed., , Allen’s Astrophysical Quantities. p. 143
  • Torres C. A. O., Ferraz Mello S., 1973, A&A, 27, 231, ADS
  • Vogt S. S., 1975, ApJ, 199, 418
  • Watson C. L., Henden A. A., Price A., 2006, Society for Astronomical Sciences Annual Symposium, 25, 47, ADS
  • Wilson R. E., Devinney E. J. J., 2015, ApJ, 807, 80
  • van Hamme W., 1993, AJ, 106, 2096
There are 45 citations in total.

Details

Primary Language Turkish
Subjects Astronomical Sciences (Other)
Journal Section Articles
Authors

Nurhan Özlem Kaya 0000-0002-4093-1024

Ali Dal 0000-0002-1078-6620

Early Pub Date December 18, 2023
Publication Date December 31, 2023
Submission Date November 5, 2022
Acceptance Date January 9, 2023
Published in Issue Year 2023

Cite

TJAA, Türk Astronomi Derneğinin (TAD) bir yayınıdır.