IGR J13091+1137

Other name = NGC 4992, CXOU J130905.6+113803

Type Redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
X-ray Bright, Optically Normal Galaxy,

heavily obscured AGN
z=0.025 FIRST J130905.5+1138803 Masetti et al. 2006 (and ref. therein)
Miscellaneous :
Sazonov et al. 2005 :
    z=0.0251, nH=(90+/-10)x10^22
Masetti et al. 2005 ATel 719:
  • 4000-8000 Angstroms optical spectral continuum typical of a normal spiral galaxy
  • CaII H+K doublet, G-band at 4304A, Hbeta, Mg b band at 5175A, FeI at 5270A and NaI doublet at 5890A absorptions
  • weak [NII] 6583A emission
  • confirm redshift z=0.025
  • X-ray Bright, Optically Normal Galaxies, heavily obscured AGN
Masetti et al. 2006:
  • Porbable XBONG likely hiding an absorbed AGN at z=0.025
  • NGC 4992 (the position of which is consistent with the Chandra counterpart to the IGR source) is B~14.5
  • radio flux density at 1.4 GHz=2.01 mJy
Khorunzev et al. 2012:
  • Etimate of mass and accretion rate based on different methods
  • Correltion with bulge luminosity => M = 107.91 MSun and LEdd = 1046.01 erg/s
  • LBol=0.042 LEdd

Last updated. 22 Nov 2012

Jerome Rodriguez