Six Supersoft X‐Ray Binaries: System Parameters and Twin‐Jet Outflows
Citations Over TimeTop 10% of 1998 papers
Abstract
A comparison is made between the properties of CAL 83, CAL 87, RX J0513.9 [6951, 1E 0035.4[7230 (SMC 13), RX J0019.8]2156, and RX J0925.7[4758, all supersoft X-ray binaries. Spectra with the same resolution and wavelength coverage of these systems are compared and contrasted. Some new photometry is also presented. The equivalent widths of the principal emission lines of H and He II di er by more than an order of magnitude among these sources, although those of the highest ionization lines (e.g., O VI) are very similar. In individual systems, the velocity curves derived from various ions often di er in phasing and amplitude, but those whose phasing is consistent with the light curves (implying the lines are formed near the compact star) give masses of D1.2 and D0.5 for the M _ M _ degenerate and mass-losing stars, respectively. This nding is in conict with currently prevailing theoretical models for supersoft binaries. The three highest luminosity sources show evidence of "" jet out-ows, with velocities of D14 ] 103 km s~1. In CAL 83 the shape of the He II j4686 prole continues to show evidence that these jets may precess with a period of D69 days.
Related Papers
- → Do theKeplerAGN light curves need reprocessing?(2015)16 cited
- → Long rotation period main-sequence stars from Kepler SAP light curves(2019)12 cited
- → Photometric observations and preliminary modeling of type IIb supernova 2011dh(2012)4 cited
- A synthetic light curve solution of the OAO-2 ultraviolet light curves of u Herculis(1978)
- → Intermediate-band Photometry of Type Ia Supernovae(2004)