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Yıl 2020, Cilt: 1 Sayı: 1, 129 - 133, 11.12.2020

Öz

Kaynakça

  • Adelman, S. J.: uvby FCAPT photometry of the metallic-lined stars 60 Tau and HR 1528 and the magnetic CP stars HR 8216 and HR 8770. A&A, (2003), vol.401, 357--360
  • Adelman, S. J.: The physical properties of normal A stars. in: J. J. Zverko et al. (eds.), The A Star Puzzle, IAU Symp. 224, UK: Cambridge University Press, (2004), p.1--11
  • Adelman, S. J., Unsuree, N.: On chemical abundances of Am and Normal A type stars. Balt. Astron., (2007), vol.16, 183-190
  • Adelman, S. J., Yüce, K.: Elemental abundance analyses with Coude Echelle Spectrograms from the TÜBİTAK National Observatory of Turkey: I. The HgMn stars 11 Per, HR 2801, and nu Cnc, Astron. Nachr., (2010), vol.331, 785--793
  • Adelman, S. J., Adelman, A. S., & Pintado, O. I.: On the relationship between the mercury-manganese stars and the metallic-lined stars. A&A, (2003), vol.397, 267--273
  • Adelman, S. J., Caliskan, H., Kocer, D., Kablan, H., Yüce, K., Engin, S.: Elemental abundance analyses with DAO spectrograms. XXV. The superficially normal B and A stars alpha Draconis, tau Herculis, gamma Lyrae, and HR 7926. A&A, (2001), vol.371, 1078--1083
  • Aurière, M. Wade, G. A., Lingières, F., et al.: No detection of large-scale magnetic fields at the surfaces of Am and HgMn stars. A&A, (2010), vol.523, id.A40 p.1--5
  • Aurière, M., Wade, G. A. Silvester, J., et al.: Weak magnetic fields in Ap/Bp stars. Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy. A&A, (2007), vol.475, 1053--1065
  • Asplund, M., Grevesse, N., Sauval, A.J., & Scott, P.: The chemical composition of the Sun. ARA&A, (2009), vol.47, 481--522
  • Berthet, S.: Which evolution for an Am star? A&A, (1992), vol.253, 451--458
  • Conti, P. S.: The early A stars. I. Rotation and metallicism. ApJ., (1965), vol.142, 1594--1603
  • Gray, R. O., Garrison, R. F.: The early F-type stars - Refined classification, confrontation with Stromgren photometry, and the effects of rotation. ApJS, (1989), vol.69, 301--321
  • Kochukhov, O., Makaganiuk, V., Piskunov, N. et al.: Are there tangled magnetic fields on HgMn stars? A&A, (2013), vol.554, id.A61, pg.1--12
  • Kurtz, D. W.: Pulsation of chemically peculiar and pre-main sequence stars in the delta Scuti instability strip. in M. Breger and M. Montgomery (eds.), ASP Conference Series, (San Francisco: ASP) ISBN: 1-58381-041-2, (2000), vol.210, 287--308
  • Michaud, G.: Diffusion processes in peculiar A stars. ApJ, (1970), vol.160, 641--658
  • Morgan, W.W.: Some evidence for the existence of a peculiar branch of the spectral sequence in the interval B8-F0. ApJ, (1933), vol.77, 330--336
  • Petit, P., Lingières, F., Wade, G. A., et al.: The rapid rotation and complex magnetic field geometry of Vega. A&A, (2010), vol.523, A41 p.1--9
  • Preston, G. W.: The chemically peculiar stars of the upper main sequence. ARA&A, (1974), vol.12, 257--277
  • Talon, S., Richard, O., & Michaud, G.: AmFm stars as a test of rotational mixing model. ApJ, (2006), vol.645, 634--651
  • Titus, J., and Morgan, W. W.: On the classifications of the A stars. I. The spectral types of the brighter members of the Hyades Cluster. ApJ, (1940), vol.92, 256--261
  • Vauclair, S., Vauclair, G., Schatzman, E., & Michaud, G.: Hydrodynamical instabilities in the envelopes of main-sequence stars - Constraints implied by the lithium, beryllium, and boron observations. ApJ, (1978), vol.223, 567-582
  • Wahlgren, G. M.; Ilyin, I., & Kochukhov, O.: Spectrum variability for the HgMn star alpha And. AAS Mtg. 199, (2001), vol.33, p.1506
  • Yüce, K., Adelman, S. J.: Elemental abundance analyses with DAO Spectrograms. XXXIV. A three-dimensional graphical examination of the elemental abundances of the mercury-manganese and metallic-line stars. PASP, (2014), vol.126, 345--358
  • Yüce, K., Adelman, S. J., & Gulliver, A. F.: Elemental abundance analyses with DAO spectrograms. XXVIII. Comparisons with two series of automated elemental abundance analyses. New Astronomy, (2011a), vol.16, 191--193
  • Yüce, K., Castelli, F., & Hubrig, S.: Wavelengths and oscillator strengths of Xe II from the UVES spectra of four HgMn stars. A&A, (2011b), vol.523, id.A37 p.1--16
  • Yüce, K., Adelman, S. J., Gulliver, A. F., Hill, G.: Elemental abundance analyses with DAO spectrograms: XXXII. HR 6455 (A3 III), delta Aqr (A3 V), eta Lep (F2 V), and 1 Boo (A1 V). Astron. Nachr., (2011c), vol.332, 681--689

Optik Bölge Tayf Analizlerinden Manyetik Özellik Göstermeyen geç $B$ -- erken $F$ Türü Yıldızların Kimyasal Element Bollukları

Yıl 2020, Cilt: 1 Sayı: 1, 129 - 133, 11.12.2020

Öz

Yıldızların ayrıntılı tayf analizleri yapılarak `normal', `civa--mangan (HgMn)' ve `metal ($Am$)' çizgi tayfları veren yıldız tiplerinin ayırt edici tayf çizgilerinden yola çıkılarak, bu yıldızların kimyası irdelendi. Ayrıca He, C, N, O elementleri yanında metallerin ve ağır metallerin yıldız atmosferlerindeki göreli bollukları, gözlemsel olarak türettiğimiz HR diyagramı üzerindeki dağılımları incelendi. Metal çizgili özel yıldızlarda tespit edilen element bolluk dağılımlarındaki değişimin, civa--mangan tipi yıldızlardakine nazaran daha az olduğu belirlendi. Civa--mangan tipinden soğuk yıldızların, metalik türden sıcak yıldızlar ile aynı evrim yolları üzerinde olduğu kanısına ulaşıldı.

Kaynakça

  • Adelman, S. J.: uvby FCAPT photometry of the metallic-lined stars 60 Tau and HR 1528 and the magnetic CP stars HR 8216 and HR 8770. A&A, (2003), vol.401, 357--360
  • Adelman, S. J.: The physical properties of normal A stars. in: J. J. Zverko et al. (eds.), The A Star Puzzle, IAU Symp. 224, UK: Cambridge University Press, (2004), p.1--11
  • Adelman, S. J., Unsuree, N.: On chemical abundances of Am and Normal A type stars. Balt. Astron., (2007), vol.16, 183-190
  • Adelman, S. J., Yüce, K.: Elemental abundance analyses with Coude Echelle Spectrograms from the TÜBİTAK National Observatory of Turkey: I. The HgMn stars 11 Per, HR 2801, and nu Cnc, Astron. Nachr., (2010), vol.331, 785--793
  • Adelman, S. J., Adelman, A. S., & Pintado, O. I.: On the relationship between the mercury-manganese stars and the metallic-lined stars. A&A, (2003), vol.397, 267--273
  • Adelman, S. J., Caliskan, H., Kocer, D., Kablan, H., Yüce, K., Engin, S.: Elemental abundance analyses with DAO spectrograms. XXV. The superficially normal B and A stars alpha Draconis, tau Herculis, gamma Lyrae, and HR 7926. A&A, (2001), vol.371, 1078--1083
  • Aurière, M. Wade, G. A., Lingières, F., et al.: No detection of large-scale magnetic fields at the surfaces of Am and HgMn stars. A&A, (2010), vol.523, id.A40 p.1--5
  • Aurière, M., Wade, G. A. Silvester, J., et al.: Weak magnetic fields in Ap/Bp stars. Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy. A&A, (2007), vol.475, 1053--1065
  • Asplund, M., Grevesse, N., Sauval, A.J., & Scott, P.: The chemical composition of the Sun. ARA&A, (2009), vol.47, 481--522
  • Berthet, S.: Which evolution for an Am star? A&A, (1992), vol.253, 451--458
  • Conti, P. S.: The early A stars. I. Rotation and metallicism. ApJ., (1965), vol.142, 1594--1603
  • Gray, R. O., Garrison, R. F.: The early F-type stars - Refined classification, confrontation with Stromgren photometry, and the effects of rotation. ApJS, (1989), vol.69, 301--321
  • Kochukhov, O., Makaganiuk, V., Piskunov, N. et al.: Are there tangled magnetic fields on HgMn stars? A&A, (2013), vol.554, id.A61, pg.1--12
  • Kurtz, D. W.: Pulsation of chemically peculiar and pre-main sequence stars in the delta Scuti instability strip. in M. Breger and M. Montgomery (eds.), ASP Conference Series, (San Francisco: ASP) ISBN: 1-58381-041-2, (2000), vol.210, 287--308
  • Michaud, G.: Diffusion processes in peculiar A stars. ApJ, (1970), vol.160, 641--658
  • Morgan, W.W.: Some evidence for the existence of a peculiar branch of the spectral sequence in the interval B8-F0. ApJ, (1933), vol.77, 330--336
  • Petit, P., Lingières, F., Wade, G. A., et al.: The rapid rotation and complex magnetic field geometry of Vega. A&A, (2010), vol.523, A41 p.1--9
  • Preston, G. W.: The chemically peculiar stars of the upper main sequence. ARA&A, (1974), vol.12, 257--277
  • Talon, S., Richard, O., & Michaud, G.: AmFm stars as a test of rotational mixing model. ApJ, (2006), vol.645, 634--651
  • Titus, J., and Morgan, W. W.: On the classifications of the A stars. I. The spectral types of the brighter members of the Hyades Cluster. ApJ, (1940), vol.92, 256--261
  • Vauclair, S., Vauclair, G., Schatzman, E., & Michaud, G.: Hydrodynamical instabilities in the envelopes of main-sequence stars - Constraints implied by the lithium, beryllium, and boron observations. ApJ, (1978), vol.223, 567-582
  • Wahlgren, G. M.; Ilyin, I., & Kochukhov, O.: Spectrum variability for the HgMn star alpha And. AAS Mtg. 199, (2001), vol.33, p.1506
  • Yüce, K., Adelman, S. J.: Elemental abundance analyses with DAO Spectrograms. XXXIV. A three-dimensional graphical examination of the elemental abundances of the mercury-manganese and metallic-line stars. PASP, (2014), vol.126, 345--358
  • Yüce, K., Adelman, S. J., & Gulliver, A. F.: Elemental abundance analyses with DAO spectrograms. XXVIII. Comparisons with two series of automated elemental abundance analyses. New Astronomy, (2011a), vol.16, 191--193
  • Yüce, K., Castelli, F., & Hubrig, S.: Wavelengths and oscillator strengths of Xe II from the UVES spectra of four HgMn stars. A&A, (2011b), vol.523, id.A37 p.1--16
  • Yüce, K., Adelman, S. J., Gulliver, A. F., Hill, G.: Elemental abundance analyses with DAO spectrograms: XXXII. HR 6455 (A3 III), delta Aqr (A3 V), eta Lep (F2 V), and 1 Boo (A1 V). Astron. Nachr., (2011c), vol.332, 681--689
Toplam 26 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Astronomik Bilimler (Diğer)
Bölüm Bildiri
Yazarlar

Kutluay Yüce Bu kişi benim

Yayımlanma Tarihi 11 Aralık 2020
Gönderilme Tarihi 18 Eylül 2015
Yayımlandığı Sayı Yıl 2020 Cilt: 1 Sayı: 1

Kaynak Göster

TJAA, Türk Astronomi Derneğinin (TAD) bir yayınıdır.