Supersoft X-Ray Sources pp 107-114 | Cite as
Phase resolved UV spectroscopy of RX J0019.8+2156
Abstract
We present orbital phase-resolved UV spectroscopy of the supersoft X-ray source RX J0019.8+2156 obtained with IUE in 1992–93. The UV and optical light curves show a quasi-sinusoidal orbital modulation with wavelength dependent amplitude and a deep secondary minimum at Φ∼0.6. The UV spectrum is of lower excitation than in other SSS. The various metal absorption lines are consistent with the source being located outside the gas layer of the galactic disc, though there is some evidence for intrinsic absorption. The UV spectrum of RX J0019 differs from those of the LMC sources CAL 83 and RX J0513.9-6951. A simple model where the UV light originates from the hot primary, the accretion disk and the heated secondary fails to reproduce the observed UV continuum.
Keywords
Light Curve Accretion Disc White Dwarf Equivalent Width Interstellar AbsorptionPreview
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References
- Beuermann K., Reinsch K., Barwig H., Burwitz V., de Martino D. et al., 1995, A&A 294, L1ADSGoogle Scholar
- Bianchi L., Pakull M.W., 1988, in A Decade of UV Astronomy with IUE, p. 145Google Scholar
- Burks G.S., Bartko F., Shull J.M., Stocke J.T., Sachs E.R., Burbidge E.M., Cohen R.D., Junkkarinen V.T., Harms R.J., Massa D., 1994, ApJ 437, 630CrossRefADSGoogle Scholar
- Crampton D., Cowley A.P., Hutchings J.B., Schmidtke P.C., Thompson I.B., Liebert J., 1987, ApJ 321, 745CrossRefADSGoogle Scholar
- Fujimoto M.Y., 1982, ApJ 257, 767CrossRefADSGoogle Scholar
- Greiner J., Wenzel W., 1995, A&A 294, L5ADSGoogle Scholar
- Heck A., Egret D., Jascheck M., Jascheck C., 1984, ESA SP-1052Google Scholar
- Holberg, J.B., Bruhweiler F.C., Andersen, J., 1995, ApJ 443, 753CrossRefADSGoogle Scholar
- Long K.S., Wade R.A., Blair W.P., Davidson A.F., Hubeny I., 1994, ApJ 426, 704CrossRefADSGoogle Scholar
- Mauche C.W., Raymond J.C., Córdova F., 1988, ApJ 335, 829CrossRefADSGoogle Scholar
- Morton D.C., 1975, ApJ 197, 85 & 1978, ApJ 222, 863CrossRefADSGoogle Scholar
- Pakull M.W., Motch C., Bianchi L., Thomas H.-C., et al., 1993, A&A 278, L39ADSGoogle Scholar
- Reinsch K., van Teeseling A., Beuermann K., Thomas H.-C., 1996a, in Röntgenstrahlung from the Universe, ed. Zimmermann H.U., et al., p. 183Google Scholar
- Reinsch K., van Teeseling A., Buermann K., Abott T.M.C., 1996b, this volume p. 173Google Scholar
- Reinsch K., van Teeseling A., Beuermann K., Abott T.M.C., 1996c, A&A (in press)Google Scholar
- Schandl S., Meyer-Hofmeister E., Meyer F., 1996a, this volume p. 53Google Scholar
- Schandl S., Meyer-Hofmeister E., Meyer F., 1996b, A&A (subm.)Google Scholar
- Schmidtke P.C., McGrath, T.K., Cowley A.P., Frattare L.M., 1993, PASP 105, 863CrossRefADSGoogle Scholar
- Shull J.M., van Steenberg M.E., 1985, ApJ 294, 599CrossRefADSGoogle Scholar
- Southwell K.A., Livio M., Charles P.A., et al., 1996, this volume p. 165Google Scholar
- van den Heuvel E.P.J., Bhattacharya D., Nomoto K., Rappaport S.A., 1992, A&A 262, 97ADSGoogle Scholar
- van Steenberg M.E., Shull J.M., 1988, ApJS 67, 225CrossRefADSGoogle Scholar
- van Teeseling A., Heise J., Kahabka P., 1996, IAU Symp. 165, 445ADSGoogle Scholar
- Will T., Barwig H., 1996, this volume p. 99Google Scholar