TY - JOUR
T1 - Superhumps in cataclysmic binaries - XXII. 1RXS J232953.9+062814
AU - Skillman, David R.
AU - Krajci, Thomas
AU - Beshore, Edward
AU - Patterson, Joseph
AU - Kemp, Jonathan
AU - Starkey, Donn
AU - Oksanen, Arto
AU - Vanmunster, Tonny
AU - Martin, Brian
AU - Rea, Robert
PY - 2002
Y1 - 2002
N2 - We report photometry of a recently discovered dwarf nova with a remarkably short 64.2 minute orbital period. In quiescence, the star's light curve is that of a double sinusoid, arising from the "ellipsoidal" distortion of the Roche-lobe-filling secondary. During superoutburst, common superhumps develop with a period 3%-4% longer than Porb. This indicates a mass ratio M2/M1 = 0.19 ± 0.02, a surprisingly large value in so compact a binary. This implies that the secondary star has a density 2-3 times higher than that of other shortperiod dwarf novae, suggesting a secondary enriched by H-burning prior to the common-envelope phase of evolution. We estimate i = 50° ± 5°, M1 = 0.63-0.09+0.12 M⊙, M2 = 0.12-0.02-0.03 M⊙, R2 = 0.121-0.007-0.010 R., and a distance to the binary of 180 ± 40 pc.
AB - We report photometry of a recently discovered dwarf nova with a remarkably short 64.2 minute orbital period. In quiescence, the star's light curve is that of a double sinusoid, arising from the "ellipsoidal" distortion of the Roche-lobe-filling secondary. During superoutburst, common superhumps develop with a period 3%-4% longer than Porb. This indicates a mass ratio M2/M1 = 0.19 ± 0.02, a surprisingly large value in so compact a binary. This implies that the secondary star has a density 2-3 times higher than that of other shortperiod dwarf novae, suggesting a secondary enriched by H-burning prior to the common-envelope phase of evolution. We estimate i = 50° ± 5°, M1 = 0.63-0.09+0.12 M⊙, M2 = 0.12-0.02-0.03 M⊙, R2 = 0.121-0.007-0.010 R., and a distance to the binary of 180 ± 40 pc.
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U2 - 10.1086/341692
DO - 10.1086/341692
M3 - Article
AN - SCOPUS:0036079777
SN - 0004-6280
VL - 114
SP - 630
EP - 635
JO - Publications of the Astronomical Society of the Pacific
JF - Publications of the Astronomical Society of the Pacific
IS - 796
ER -