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- W3099685894 abstract "We present the results of 37 nights of CCD unfiltered photometry of nova V2574 Oph (2004) from 2004 and 2005. We find two periods of 0.14164 days (≈3.40 hr) and 0.14773 days (≈3.55 hr) in the 2005 data. The 2004 data show variability on a similar timescale, but no coherent periodicity was found. We suggest that the longer periodicity is the orbital period of the underlying binary system and that the shorter period represents a negative superhump. The 3.40 hr period is about 4% shorter than the orbital period and obeys the relation between superhump period deficit and binary period. The detection of superhumps in the light curve is evidence of the presence of a precessing accretion disk in this binary system shortly after the nova outburst. From the maximum magnitude-rate of decline relation, we estimate the decay rate t2 = 17 ± 4 days and a maximum absolute visual magnitude of M = -7.7 ± 1.7 mag." @default.
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- W3099685894 date "2006-03-01" @default.
- W3099685894 modified "2023-10-08" @default.
- W3099685894 title "Detection of Orbital and Superhump Periods in Nova V2574 Ophiuchi (2004)" @default.
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- W3099685894 doi "https://doi.org/10.1086/500088" @default.
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