Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848

Details Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848 Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.297..235c&link_type=abstract

Astrophysics and Space Science, Volume 297, Issue 1-4, pp. 235-244

Astronomy and Astrophysics

Astrophysics

9

Stars: Circumstellar Matter, Emission-Line, Be-X-Rays: Binaries, Igr J16318-4848, Be&Ndash, X-Rays: Binaries

Scientific paper

The X-ray source IGR J16318-4848 was the first source discovered by INTEGRAL on January 29, 2003. The high energy spectrum exhibits such a high column density that the source is undetectable in X-rays below 2 keV. On February 23 25, 2003 we triggered a Target of Opportunity (ToO) Program using the EMMI and SOFI instruments on the New Technology Telescope of the European Southern Observatory (La Silla) to get optical and near-infrared (NIR) observations. We discovered the optical counterpart, and confirmed the already proposed candidate in the NIR. NIR spectroscopy revealed a large amount of emission lines, including forbidden iron lines and P-Cygni profiles, showing a strong similarity with CI Cam, another strongly absorbed source. Together with the spectral energy distribution (SED), these data point to a high luminosity, high temperature source, with an intrinsic absorption greater than the interstellar absorption, but two orders of magnitude below the X-ray absorption. All these observations show that IGR J16318-4848 is a high mass X-ray binary (HMXB) at a distance between 0.9 and 6.2 kpc, the mass donor being an early-type star, probably a sgB[e] star, surrounded by a dense and absorbing circumstellar material. This would make the second HMXB with a sgB[e] star as the mass donor after CI Cam.

Affiliated with

Also associated with

No associations

Rating

Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Revealing the Nature of the Obscured High Mass X-ray Binary IGR J16318-4848 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-868233