IC 4329A, also commonly referred as PGC 49051 is a Seyfert galaxy in the constellation of Centaurus. Its distance from Earth is 206 million light years. The declination of IC 4329A is approximately -30.2 degrees and was first discovered by Wilson A. S. & Penston, M. V. in 1979.[1]

Characteristics

This galaxy was first described by using an X-ray spectro-polarimetric analysis as an extremely bright Seyfert galaxy on account of the width of H-alpha (13,000 km/sec) and the high H-beta luminosity. This galaxy is described as an edge-on spiral galaxy close to elliptical galaxy IC 4329, which is the brightest galaxy inside a galaxy cluster in the Centaurus region.[6] It has a dust lane displaying extreme polarization.[7]

Additionally, dust components in IC 4329A have been detected mainly in the interstellar medium of its host galaxy as well as its nuclear component located in the active torus.[8]

The supermassive black hole in IC 4329A is estimated to be 6.8+1.2
−1.1 x 107 Mʘ.[9]

Nearby galaxies

The closest galaxy next to IC 4329A is IC 4329 with the group of IC 4327, 5302, 5304, 5298, PGC 159482 and PGC 48950.[10]

References

  1. ^ Wilson, A. S.; Penston, M. V. (1979). "IC 4329A: The nearest quasar?". The Astrophysical Journal. 232: 389. Bibcode:1979ApJ...232..389W. doi:10.1086/157298.
  2. ^ "CzSkY".
  3. ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. ^ Ingram, A.; et al. (2023). "The X-ray polarisation of the Seyfert 1 galaxy IC 4329A". Monthly Notices of the Royal Astronomical Society. 525 (4): 5437. arXiv:2305.13028. Bibcode:2023MNRAS.525.5437I. doi:10.1093/mnras/stad2625.
  5. ^ "Ic 4329A".
  6. ^ Wilson, A. S.; Penston, M. V. (1979). "IC 4329A: The nearest quasar?". The Astrophysical Journal. 232: 389. Bibcode:1979ApJ...232..389W. doi:10.1086/157298.
  7. ^ Wolstencroft, Ramon D.; Done, C.J. (September 1995). "Imaging polarimetry of the Seyfert galaxy IC 4329A". Monthly Notices of the Royal Astronomical Society. 276 (2): 460–466. doi:10.1093/mnras/276.2.460.
  8. ^ Mehdipour, Missagh; Costantini, Elisa (2018-11-01). "Probing the nature and origin of dust in the reddened quasar IC 4329A with global modelling from X-ray to infrared". Astronomy & Astrophysics. 619: A20. arXiv:1808.04628. Bibcode:2018A&A...619A..20M. doi:10.1051/0004-6361/201833706. ISSN 0004-6361.
  9. ^ Bentz, Misty C.; Onken, Christopher A.; Street, Rachel; Valluri, Monica (2023-02-01). "Reverberation Mapping of IC 4329A". The Astrophysical Journal. 944 (1): 29. arXiv:2212.05954. Bibcode:2023ApJ...944...29B. doi:10.3847/1538-4357/acab62. ISSN 0004-637X.
  10. ^ "CzSkY".
Allikas: https://en.wikipedia.org/wiki/IC_4329A
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