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The ULX source X-3 in NGC 4258: a search for its X-ray and optical properties

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Date
2020
Author
Akyüz, Aysun
Avdan, Şenay
Allak, Sinan
Aksaker, Nazım
Oralhan, İnci Akkaya
Balman, Şölen
Abstract
We present the results of a search for the nature of ultraluminous X-ray source (ULX) X-3 in the nearby galaxy NGC 4258. We use archival data from XMM-Newton, Chandra, NuSTAR, and Hubble Space Telescope (HST) observations. Total X-ray data were analysed to find that the model parameters of the system are indicative of a stellar-mass black hole, similar to 10 M-circle dot, as the central compact object. Furthermore, analyses of the optical data from HST reveal two optical candidates at 90 per cent confidence level within an error radius of 0.28 arcsec. Assuming the optical emission is dominated by the donor star, both of these candidates are found to have spectral types that lie between B3 and F1 with absolute magnitudes of M-V approximate to -6.4. Moreover, the age and mass estimates for the candidates are found to be 10 and 18 Myr and 13 and 20 M-circle dot, respectively.

Source

Monthly Notices of the Royal Astronomical Society

Issue

2

Volume

499

Pages

2138-2147

URI

https://doi.org/10.1093/mnras/staa2823
https://hdl.handle.net/20.500.12469/3769

Collections

  • Araştırma Çıktıları / Scopus [1565]
  • Araştırma Çıktıları / WOS [1518]

Keywords

Galaxies
Individual
NGC 4258
X-Rays
Binaries

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DSpace software copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback
Theme by 
@mire NV