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EC 19314 - 5915 - A bright, eclipsing cataclysmic variable from the Edinburgh-Cape Blue Object Survey
A deeply eclipsing cataclysmic variable, with an orbital period of 4.75hr, has been discovered in the southern Edinburgh-Cape Blue ObjectSurvey. The star, EC 19314 - 5915, lies close to the positionalconstraints of a previously unidentified HEAO-1 hard X-ray source,1H1930 - 5989. Its optical spectrum is unusual in that it shows, apartfrom the emission lines characteristic of a novalike, or dwarf novacataclysmic variable (Balmer, He I and He II), metallic absorption linestypical of a late-G star. The individual time-resolved spectra, with thetertiary absorption lines removed, show absorption reversals in theBalmer emission lines, increasing in strength for the higher series. TheBalmer emission radial velocities are therefore severely distorted incomparison to the He II 4686-A emission and He I 4471-A absorptionradial velocity curves. An independent distance estimate of about 600 pcis derived for EC19314 - 5915, from the spectroscopic parallax of thethird star.
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Osservazione e dati astrometrici
| Costellazione: | Lupo |
| Ascensione retta: | 14h53m54.01s |
| Declinazione: | -55°02'53.5" |
| Magnitudine apparente: | 7.705 |
| Distanza: | 193.424 parsec |
| Moto proprio RA: | -42.5 |
| Moto proprio Dec: | -34.8 |
| B-T magnitude: | 9 |
| V-T magnitude: | 7.812 |
Cataloghi e designazioni:
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