Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...718....1g&link_type=abstract
The Astrophysical Journal, Volume 718, Issue 1, pp. 1-10 (2010).
Astronomy and Astrophysics
Astronomy
2
Accretion, Accretion Disks, Binaries: Close, Binaries: Symbiotic, Infrared: Stars, Stars: Late-Type, X-Rays: Binaries
Scientific paper
We have combined ground-based optical and near-infrared data with Spitzer Space Telescope mid-infrared data for five black hole (BH) soft X-ray transients (SXTs) in order to determine the levels of near- and mid-infrared emission from sources other than the secondary star. Mid-infrared emission from an accretion disk, circumbinary dust, and/or a jet could act as sources of near-infrared contamination, thereby diluting ellipsoidal variations of the secondary star and affecting determined BH mass estimates. Based on optical to mid-infrared spectral energy distribution modeling of the five SXTs along with the prototype, V616 Mon, we detected mid-infrared excesses in half of the systems, and suggest that the excesses detected from these systems arise from non-thermal synchrotron jets rather than circumbinary dust disks.
Gelino Christopher R.
Gelino Dawn M.
Harrison Thomas E.
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