IGR J14091-6108


Other name =

Type Redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
CV or HMXB VISTA #515845105705
G312.1289+00.3516
Tomsick et al. 2014 ATel 6793
Published Papers
Miscellaneous :
Landi et al. 2012ATel 4165 :
  • Swift XRT observations
  • 2 USNO B1.0 sources in Swift error box
  • Swift spectrum => NH~2 x 1022 (compatible with Galactic value on line of sight) and Γ~1.3
  • Source probably galactic
Tomsick et al. 2014ATel 6793, Tomsick et al. 2016 (ApJ) :
  • Chandra ACIS observations
  • USNO B1.0 sources not in Chandra error
  • X-ray error of 0.4" by cross match with VISTA field sources
  • 1 VISTA counterpart Z = 16.190, Y = 15.797, J = 15.240, H = 14.809,and Ks = 14.376,
  • Spitzer/GLIMPSE countepart m3.6 = 13.76, m4.5 = 13.15
  • Modest extinction, in X-rays NH=6e21 cm-2 < Galactic value on line of sight => close source
  • Γ=0.3 + iron line @6.51 keV and width < 0.4, eq width 900 eV
  • Source is Galactic, probable CV or HMXB with the former possibility slightly favoured
Tomsick et al. 2016b (MNRAS) :
  • XMM and Nustar X-ray observations + optical spectroscopy with VLT and SOAR telescopes
  • XMM timing analysis => 576.3s period with pulse fraction 30% (0.3-12 keV)
  • Optical lines with significant variability => originate from irradiated accretion disk
  • Source classified as an intermediate polar CV.
  • Spectrum compatible with bremsstrahlung emission (kT 81 keV) with partial covering (NH=1.4e23 cm-2 covering fraction 0.68) and reflection
  • Using the IP mass model the spectral analysis seems to indicate a high mass white dwarf (> 1.31 solar masses using only Nustar data)

Last updated 18 Apr. 2016

Jerome Rodriguez