IGR J18219-1347

Other name = XMMSL1 J182155.0-134719, Swift J1821.8-1348

Type Redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
HMXB, probable Be companion G017.3244+00.1344 Krimm et al. 2012 ATel 3933
18h 21m 54.77s -13° 47' 26.6"
Published Papers
Miscellaneous :
Landi et al. 2011 ATel 3272:
  • No Swift counterpart, but XMM SL source => possible variability
  • J ~14.3, H ~12.3 and K ~11.5
Krimm et al. 2012 ATel 3933:
  • Detection with Swift/BAT and follow up observation with Swift/XRT=>refined position
  • G017.3244+00.1344 IR counterpart has magnitudes of 12.93, 12,34 and 11.89 at, respectively, 3.6 microns, 4.5 microns and 5.8 microns
  • 2 MASS source previously suggested is NOT the counterpart
  • Source spectrum quite absorbed => NH~4.4e22 cm-2 and Γ~0.2 (with an error of +-0.6)
  • Very probably a Galactic XRB
Karasev et al. 2012 (Astr. Lett):
  • Chandra observation => refinement of the position Closest source is the UKIDS data a RA=18h 21m54.766s, Dec=-13 °ree; 47' 26.77", with J=18.00, H=16.01, Ks=14.44
  • IR source probably composite or non-pointed
  • Swift+INTEGRAL spectrum fitted with absorbed cut-off power law NH 3x1022, Γ~1, and Ecut~6 keV
  • Candidate HMXB
La parola et al. 2013 (ApJ):
  • Analysis of Swift BAT monitoring and Swift XRT pointings
  • Discovery of orbital period P=72.44 days in BAT data
  • Souirce detected only in 5 XRT pointings out of 12
  • Broad band X-ray spectral analysis => absorbed cut-off power law NH~4 x 1022 cm-2, Γ~-0.1, Ecut~11 keV
  • Source is an HMXB, probably with Be companion

Last updated 2 Sept. 2013

Jerome Rodriguez