Discovery of the near-infrared counterpart of the X-ray transient XTE J1908+094

Details Discovery of the near-infrared counterpart of the X-ray transient XTE J1908+094 Discovery of the near-infrared counterpart of the X-ray transient XTE J1908+094

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.337l..23c&link_type=abstract

Monthly Notice of the Royal Astronomical Society, Volume 337, Issue 3, pp. L23-L26.

Astronomy and Astrophysics

Astronomy

3

Stars: Individual: Xte J1908+094, Infrared: Stars, X-Rays: Stars

Scientific paper

We report on the identification in the near-infrared (NIR) of the counterpart to the newly discovered black hole candidate XTE J1908+094, achieved partly through `Target of Opportunity' (ToO) observations carried out at the ESO/NTT. Accurate astrometry and photometry performed on three sets of observations of the source covering 1.7 months have shown a decrease of its NIR flux, consistent with the X-ray decay. After dereddening for the measured column density, we computed the absolute magnitudes of the source for different distances. We derive that the source is a low-mass system and that the companion star is a main sequence star with a spectral type later than K.

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