IGR J19267+1325


Other name = 1RXS J192626.8+132153

Type spin/orb. period/distance Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
CV possible Polar 938.6 s / 3.4 hours / ~250 pc USNO-B1.0 1033-044065 Tomsick et al. 2008
Butler et al. 2009
Published Papers
Miscellaneous :

Tomsick et al. 2008 ATel 1649:
  • Extremely hard Chandra spectrum Γ=0.68
  • NH=2.1 x1021 cm-2
  • USNO-B1.0 and 2MASS counterparts with B = 17.7, R = 16.0 , I= 15.1 , J = 14.94 , H = 14.46 , and Ks = 14.10
  • Galactic source
Steeghs et al. 2008 ATel 1653:
  • IPHAS frames => modest variability in the r', i', and H-alpha band.
  • r'=17.70, i'=16.74 and significant H-alpha excess with (r' - H-alpha) = 1.1-1.2 mag.
  • Presence of strong and broad lines from the Balmer and Paschen series as well as HeI and HeII in emission. from Optical spectroscopy
  • EW of the H-alpha emission line is ~120 A.
  • Spectrum typical of a cataclysmic variable
  • Presence of significant HeII emission at a strength comparable to the higher Balmer lines is suggestive of a CV containing a magnetic white dwarf.
Evans et al. 2008 ATel 1669:
  • Swift => pulsation at 938.6s with 25% rms amplitude
  • Other possible periods one of which (4.58 hours) associated with orbit.
  • 938s pulsation seen in UVOT data
  • confirm the source is an CV/IP
Rodriguez et al. 2009:
  • Swift Analysis => absorbed power law acceptable (but not perfect) fit
  • NH <0.6 x1022 cm-2 Γ=1.1
  • No evidence for a bbody emission in spectrum
  • Possible significant variation of flux
Masetti et al. 2009:
  • Optical spectroscopy
  • d~580
  • Av~0
Butler et al. 2009:
  • Optical spectroscopy
  • Cnfirm the CV and magnetic nature of this source=> IP
  • V=17.4, R=16.7 and I=15.8
  • Distance of ~250 pc
Tomsick et al. 2009:
  • Chandra observation
  • NH=0.3 x1022 cm-2 Γ=0.75
Thornstensen & Halpern 2013 (ApJ):
  • Optical observations => red sloping continuum with strong single peaked emission lines (Hα, Hβ He II)
  • Unambiguous 3.4 hr orbital period => 16500s period previously reported unrelated to orbit
  • Spin period in R filter = 931.5s consistent with X-ray
  • Possible Polar

Last updated 09 October 2013

Jerome Rodriguez