- Author
- Year
- 2014
- Title
- Revealing a new symbiotic X-ray binary with Gemini Near-infrared Integral Field Spectrograph
- Journal
- Monthly Notices of the Royal Astronomical Society
- Volume | Issue number
- 441 | 1
- Pages (from-to)
- 640-645
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Anton Pannekoek Institute for Astronomy (API)
- Abstract
-
We use K-band spectroscopy of the counterpart to the rapidly variable X-ray transient XMMU J174445.5−295044 to identify it as a new symbiotic X-ray binary. XMMU J174445.5−295044 has shown a hard X-ray spectrum (we verify its association with an INTEGRAL/Imager on-Board the INTEGRAL Satellite 18-40 keV detection in 2013 using a short Swift/X-Ray Telescope observation), high and varying NH, and rapid flares on time-scales down to minutes, suggesting wind accretion on to a compact star. We observed its near-infrared counterpart using the Near-infrared Integral Field Spectrograph at Gemini-North, and classify the companion as ∼M2 III. We infer a distance of 3.1+1.8−1.1 kpc (conservative 1σ errors), and therefore calculate that the observed X-ray luminosity (2-10 keV) has reached to at least 4 × 1034 erg s−1. We therefore conclude that the source is a symbiotic X-ray binary containing a neutron star (or, less likely, black hole) accreting from the wind of a giant.
- URL
- go to publisher's site
- Language
- English
- Persistent Identifier
- https://hdl.handle.net/11245/1.440500
- Downloads
-
Revealing a new symbiotic X-ray binary(Final published version)
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