The orbital period of CY UMa
We present intermediate resolution spectroscopy of the dwarf nova CY UMa in quiescence. From the radial velocities of the Hα emission, we derive an orbital period of 0.067 95±8x10–5 d, which disagrees with previous photometric estimates. We also constrain the system parameters. The core of the Hα em...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 1995-08, Vol.275 (3), p.699-702 |
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| container_title | Monthly notices of the Royal Astronomical Society |
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| creator | Martínez-Pais, I. G. Casares, J. |
| description | We present intermediate resolution spectroscopy of the dwarf nova CY UMa in quiescence. From the radial velocities of the Hα emission, we derive an orbital period of 0.067 95±8x10–5 d, which disagrees with previous photometric estimates. We also constrain the system parameters. The core of the Hα emission seems to be dominated by a component almost in phase with the line wings. Such a component would originate in a region opposite to the secondary star with respect to the white dwarf. This effect appears to be a common feature of SU UMa systems. |
| doi_str_mv | 10.1093/mnras/275.3.699 |
| format | Article |
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From the radial velocities of the Hα emission, we derive an orbital period of 0.067 95±8x10–5 d, which disagrees with previous photometric estimates. We also constrain the system parameters. The core of the Hα emission seems to be dominated by a component almost in phase with the line wings. Such a component would originate in a region opposite to the secondary star with respect to the white dwarf. This effect appears to be a common feature of SU UMa systems.</abstract><cop>Oxford, UK</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/275.3.699</doi><tpages>4</tpages></addata></record> |
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| ispartof | Monthly notices of the Royal Astronomical Society, 1995-08, Vol.275 (3), p.699-702 |
| issn | 0035-8711 1365-2966 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_26050817 |
| source | Oxford Journals Open Access Collection; Oxford Journals A-Z Collection; EZB Electronic Journals Library |
| subjects | binaries: general cataclysmic variables novae stars: individual: CY UMa |
| title | The orbital period of CY UMa |
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