Optical and near-IR observations of XTE J1859+226

Hynes, R. I.; Haswell, C. A.; Norton, A. J.; Chaty, S.; Rolfe, D. J.; Lott, D. A.; Solheim, J. E.; Ostensen, R.; Garcia, R. A.; Fried, R.; O'Brien, K.; Horne, K.; Ioannou, Z.; Shafter, A.; Abbott, T. M. C.; Krisciunas, K.; Ivison, R.J.; Sano, Y.; Chen, W.; Shrader, C.; Livio, M.; Robinson, E. L. and Wagner, R. M. (1999). Optical and near-IR observations of XTE J1859+226. Astronomer's Telegram.

URL: http://www.astronomerstelegram.org/?read=50


Following optical and near-infrared monitoring of XTE J1859+226 (IAUC #7279, #7284), HST/STIS observations were performed on Oct 18.10-18.38 spanning 112-1026nm. The UV spectrum shows broad (12000km/s FWZI) and deep Lyman alpha absorption, strong CIV 155nm emission (EW 1.1nm, 4000km/s FWZI) and weaker emission lines of CIII, NV, OIII, OIV, OV, SiIV and HeII. Sharp absorption lines of SiII, SiIII, MgII and other species also appear with possible interstellar origin.

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