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| Miscellaneous :
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Tomsick et al. 2007 ATel 1018:
- spectrum represented by an absorbed power-law model with a flux of 5 x 10^-12 ergs/cm^2/s
(0.3-10 keV, absorbed)
- Preliminary results give NH = 2.2 x 1022 cm-2 and Gamma 2.7.
- J = 15.57+/-0.08, H = 13.86+/-0.07,
and K = 12.69+/-0.04
- Likely HMXB due to brightness of IR counterpart
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Tomsick et al. 2008:
- No evidence for extension of the IR counterpart (as might
be expected for such a bright IR source)=> probably Galactic
- Absorbed power law, NH=1.9x1022 cm-2,
Γ= 1.1, Unabs. 0.3-10 keV flux=13 e-12 erg/cm2/s
- Using Ks=12.69 and AK=0.66-1.21 => d=6.3-8.1 kpc for a BO
V star => L=8e34 x(d/7kpc)2 erg/s consistent with other IGR
HMXBs
- Supergiant => d=30-40 kpc and is therefore unlikely
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Zurita Heras et al. 2009:
- ESO/NTT observation => confirm 2MASS J09023731-4813339
as the counterpart
- NIR images (JHKs) =>source is extended, and not Galactic.
- Source spectrum shows three main emission lines identified
as the HeI, HI Pa-β and Pa-α lines, typical in galaxies with an active galactic nucleus
- Broadness of these lines => type 1 Seyfert galaxy
- Redshift is z=0.0391(4).
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