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Year 2020, Volume: 1 Issue: 1, 305 - 307, 11.12.2020

Abstract

References

  • Aird, J., Nandra, K., Laird, E.S. ve ark.: The Evolution of the Hard X-ray Luminosity Function of AGN. Monthly Notices of the Royal Astronomical Society. 401 (2010) 2531--2551
  • Begelman, M.C.: Super-Eddington Fluxes from Thin Accretion Disks?. Astrophysical Journal. 568 (2002) 97--100
  • Drozdovsky, I.O., Karachentsev, I.D.: Vizier Online Data Catalog: BVRI Photometry of 6 Galaxies. Astronomy and Astrophysics Supplement. 142 (2000) 425--432
  • Feng, H., Soria, R.: Ultraluminous X-ray sources in the Chandra and XMM-Newton era. New Astronomy Reviews. 55 (2013) 166--183
  • King, A.R., Davies, M.B., Ward, M.J., Fabbiano, G., Elvis, M.: Ultraluminous X-ray sources in External Galaxies. Astrophysical Journal. 552 (2001) 109--112
  • Miller, M.C., Colbert, E.J.M.: Intermediate-Mass Black Holes. International Journal of Modern Physics D. 13 (2004) 1--64
  • Oke, J.B.: Faint Spectrophotometric Standard Stars. Astronomical Journal. 99 (1990) 1621--1631
  • Pintore, F., Zampieri, L., Wolter, A., Belloni, T.: Ultraluminous X-ray Sources: A Deeper Insight into Their Spectral Evolution. Monthly Notices of the Royal Astronomical Society. 439 (2014) 3461--3475
  • Schlegel, D.J., Finkbeiner, D.P., Davis, M.: Maps of Dusts Infrared Emission for use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds. Astrophysical Journal. 500 (1998) 525--553
  • Sutton, A.D., Roberts, T.P., Middleton, M.J.: The Ultraluminous State revisited: Fractional Variability and Spectral Shape as Diagnostics of Super-Eddington Accretion. Monthly Notices of the Royal Astronomical Society. 435 (2013) 1758--1775
  • Swartz, D.A., Soria, R., Tennant, A.F., Yukita, M.: A Complete Sample of Ultraluminous X-ray Sources Host Galaxies. Astrophysical Journal. 741 (2011) 49--59
  • Tao, L., Feng, H., Grise, F., Kaaret, P.: Compact Optical Counterparts of Ultraluminous X-ray Sources. Astrophysical Journal. 737 (2011) 81--95
  • Vinokurov, A., Fabrika, S., Atapin, K.: Ultraluminous X-ray Sources as Supercritical Accretion Disks: Spectral Energy Distributions. Astrophysical Bulletin. 68 (2013) 139--153
  • Yang, L., Feng, H., Kaaret, P.: The Optical Counterpart of NGC 1313 X-1. Astrophysical Journal. 733 (2011) 118--124

NGC 5474 Galaksisinde Bulunan Bir AXK'nın Optik Karşılığı ve Çevresinin Araştırılması

Year 2020, Volume: 1 Issue: 1, 305 - 307, 11.12.2020

Abstract

Bu çalışmada, NGC 5474 galaksisinde bulunan bir AXK'nın X-ışın verileri tekrar analiz edilmiş ve optik karşılığı araştırılmıştır. {\it HST} görüntüleri incelendiğinde kaynağın optik karşılığının çok sönük olduğu ($m_{V}$ $=$ 24.7) belirlenmiştir. NGC 5474 X-1'in X-ışınlarında {\it Chandra} verilerinin analizi sonucu, kaynağın tayfına Power-law (PL) modeli en iyi uyumu göstermiştir ($\Gamma$ $=$0.95). PL modelinden elde edilen akı değeri kullanılarak kaynağın X-ışın ışıma gücü $L_{X}$ $=$ 1.7$\times 10^{40}$ erg s$^{-1}$ olarak hesaplanmıştır. NGC 5474 X-1'in SAO RAS BTA-6m teleskobu ile alınan optik tayfı incelendiğinde kaynağın çok yakınında bulunan bir yıldızdan ($m_{V}$ $=$ 23) gelen ışımanın katkısı dikkate alınmıştır. Ayrıca slit içerisinde bir ard-alan galaksisi ve yeni bir genç yıldız kümesi belirlenmiştir. AXK X-1 kaynağını daha iyi sınıflandırılabilmek için $L_{X}$/$L_{opt}$ değeri hesaplanmış ve bu değer $\sim$ 7000 olarak bulunmuştur.

References

  • Aird, J., Nandra, K., Laird, E.S. ve ark.: The Evolution of the Hard X-ray Luminosity Function of AGN. Monthly Notices of the Royal Astronomical Society. 401 (2010) 2531--2551
  • Begelman, M.C.: Super-Eddington Fluxes from Thin Accretion Disks?. Astrophysical Journal. 568 (2002) 97--100
  • Drozdovsky, I.O., Karachentsev, I.D.: Vizier Online Data Catalog: BVRI Photometry of 6 Galaxies. Astronomy and Astrophysics Supplement. 142 (2000) 425--432
  • Feng, H., Soria, R.: Ultraluminous X-ray sources in the Chandra and XMM-Newton era. New Astronomy Reviews. 55 (2013) 166--183
  • King, A.R., Davies, M.B., Ward, M.J., Fabbiano, G., Elvis, M.: Ultraluminous X-ray sources in External Galaxies. Astrophysical Journal. 552 (2001) 109--112
  • Miller, M.C., Colbert, E.J.M.: Intermediate-Mass Black Holes. International Journal of Modern Physics D. 13 (2004) 1--64
  • Oke, J.B.: Faint Spectrophotometric Standard Stars. Astronomical Journal. 99 (1990) 1621--1631
  • Pintore, F., Zampieri, L., Wolter, A., Belloni, T.: Ultraluminous X-ray Sources: A Deeper Insight into Their Spectral Evolution. Monthly Notices of the Royal Astronomical Society. 439 (2014) 3461--3475
  • Schlegel, D.J., Finkbeiner, D.P., Davis, M.: Maps of Dusts Infrared Emission for use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds. Astrophysical Journal. 500 (1998) 525--553
  • Sutton, A.D., Roberts, T.P., Middleton, M.J.: The Ultraluminous State revisited: Fractional Variability and Spectral Shape as Diagnostics of Super-Eddington Accretion. Monthly Notices of the Royal Astronomical Society. 435 (2013) 1758--1775
  • Swartz, D.A., Soria, R., Tennant, A.F., Yukita, M.: A Complete Sample of Ultraluminous X-ray Sources Host Galaxies. Astrophysical Journal. 741 (2011) 49--59
  • Tao, L., Feng, H., Grise, F., Kaaret, P.: Compact Optical Counterparts of Ultraluminous X-ray Sources. Astrophysical Journal. 737 (2011) 81--95
  • Vinokurov, A., Fabrika, S., Atapin, K.: Ultraluminous X-ray Sources as Supercritical Accretion Disks: Spectral Energy Distributions. Astrophysical Bulletin. 68 (2013) 139--153
  • Yang, L., Feng, H., Kaaret, P.: The Optical Counterpart of NGC 1313 X-1. Astrophysical Journal. 733 (2011) 118--124
There are 14 citations in total.

Details

Primary Language English
Subjects Astronomical Sciences (Other)
Journal Section Conference Paper
Authors

Şenay Avdan This is me

Hasan Avdan This is me

Aysun Akyüz This is me

Nazım Aksaker This is me

Alexander Vınokurov This is me

Sergei Fabrıka This is me

Publication Date December 11, 2020
Submission Date September 18, 2015
Published in Issue Year 2020 Volume: 1 Issue: 1

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TJAA is a publication of Turkish Astronomical Society (TAD).