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http://hdl.handle.net/2445/150581
Title: | Orbital parameters of the microquasar LSI+61303 |
Author: | Casares, J. Ribas Canudas, Ignasi Paredes i Poy, Josep Maria Martí Ribas, Josep Allende Prieto, Carlos |
Keywords: | Raigs X Estels X-rays Stars |
Issue Date: | 1-Jul-2005 |
Publisher: | Royal Astronomical Society |
Abstract: | New optical spectroscopy of the HMXB microquasar LSI +61 303 is presented. Eccentric orbital fits to our radial velocity measurements yield updated orbital parameters in good agreement with previous work. Our orbital solution indicates that the periastron passage occurs at radio phase 0.23 and the X-ray/radio outbursts are triggered 2.5--4 days after the compact star passage. The spectrum of the optical star is consistent with a B0 V spectral type and contributes ~65 percent of the total light, the remaining due to emission by a circumstellar disc. We also measure the projected rotational velocity to be v sin i = 113 km/s. |
Note: | Reproducció del document publicat a: https://doi.org/10.1111/j.1365-2966.2005.09106.x |
It is part of: | Monthly Notices of the Royal Astronomical Society, 2005, vol. 360, num. 3, p. 1105-1109 |
URI: | http://hdl.handle.net/2445/150581 |
Related resource: | https://doi.org/10.1111/j.1365-2966.2005.09106.x |
ISSN: | 0035-8711 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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