SIMBAD references

2015AJ....150...21P - Astron. J., 150, 21 (2015/July-0)

On the near-infrared identification of the INTEGRAL source IGR J16328-4726.

PERSI P., FIOCCHI M., TAPIA M., ROTH M., BAZZANO A., UBERTINI P. and PARISI P.

Abstract (from CDS):

The aim of this work is to identify the infrared (IR) counterpart of the Galactic high-mass X-ray binary IGR J16328-4726 discovered by the INTEGRAL satellite, and to derive the extinction and distance to the system. We present new deep sub-arcsecond JHKs imaging and low-resolution near-IR spectroscopy in the 1.5 and 2.4 µm range of IGR J16328-4726. We report the presence of two near-IR stellar sources separated by about 1".8 at the location of the unresolved 2MASS source J16323791-4723409, previously considered to be the near-IR counterpart of the X-ray source. From the analysis of their near-IR colors and spectra as well as accurate positions, we uniquely identify the true IR counterpart of IGR J16328-4726. Our 1.5-2.4 µm spectrum of this star is consistent with the published classification O8Iafpe. Assuming this, and in combination with new JHKsphotometry, a reddening AV= 23.6±0.7 and a distance of 7.2±0.3 kpc from the Sun are derived.

Abstract Copyright:

Journal keyword(s): stars: imaging - supergiants - X-rays: individual: IGR J16328-4726

Nomenclature: Table 1: [PFT2015] A (Nos A-B).

Simbad objects: 5

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2023.02.03-11:11:35

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