RX J0537.7-7034: The shortest-period supersoft X-ray source
| dc.creator | Greiner, J. | |
| dc.creator | Orio, M. | |
| dc.creator | Schwarz, R. | |
| dc.date | 1999-12-14 | |
| dc.date.accessioned | 2026-07-07T02:34:58Z | |
| dc.date.available | 2026-07-07T02:34:58Z | |
| dc.description | We present new photometric and spectroscopic observations of the transient supersoft X-ray source RX J0537.7-7034 and find a periodicity of approximately 3.5 hrs. This establishes RX J0537.7-7034 as the supersoft X-ray source with the shortest orbital period. We furthermore derive an inclination of the binary system of 45<i<70 deg, and the masses of the two binary components: M_accretor = 0.6+-0.2 Msun, M_donor = 0.35+-0.02 Msun. This implies that the standard scenario of supersoft X-ray sources, in which the donor is thought to be more massive than the accreting white dwarf to ensure high mass transfer rates on a thermal timescale (van den Heuvel et al 1992), is not applicable for this system. We discuss alternative interpretations of this source as a former nova in which the thermonuclear flashes have become mild and most accreted mass is retained by the white dwarf (SMC 13 type systems), or as a self-sustained wind-driven system. | |
| dc.description | 9 pages, LATEX with aa.sty, 7 ps-figs., A&A (accepted), also available at http://www.aip.de/~jcg/publis.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9912283 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9912283 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15455 | |
| dc.subject | Astrophysics | |
| dc.title | RX J0537.7-7034: The shortest-period supersoft X-ray source | |
| dc.type | text |