IGR J00254+6822

Other name = IGR J00256+6821, IGR J00255+6821, Swift J0025.8+6818, LEDA 136991/IRAS 00227+6805 (?), 2MASX J00253292+6821442

Type redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
AGN
Sey 2 		0.012
00h 25m 32.5 (+-1") +68o 21' 44" (+-1") Masetti et al. 2008
Published Papers
Miscellaneous :
Kuiper et al. 2006 ATel 939:
  • ~0.8 mCrab in 20--60 keV
Masetti et al. 2006: ATel 941:
  • LEDA 136991 has double nucleus morphology.
  • The western nucleus narrow [OIII], Halpha, [NII] and [SII] emission lines at redshift z = 0.012
  • superimposed on a reddened continuum.
  • Line ratios are consistent with those of a Seyfert 2 nucleus.
  • western part possible optical candidate
  • Positional coincidence with IRAS J00227+6805.
Landi et al. 2007ATel 1274:
  • X-ray analysis with Swift XRT
  • Absorbed power law spectrum
  • NH~ 4x1023 cm-2
  • 2-10 keV flux 5x10-13 erg/cm2/s
Masetti et al. 2008:
  • Optical spectroscopy is presented and detailed
  • Optical counterpart to IGR is the western nucleus of LEDA 136991
  • No peculiar emission features from eastern nucleus
  • Fluxes of Hα, Hβ and [OIII] are given

Last updated Feb 13 2008

Jerome Rodriguez