We report on time-series photometric observations in the earliest stages of superoutbursts of the extreme dwarf novae, AL Com and WZ Sge, which started on 2001 May after the 6 years quiescence and on 2001 July after the 23 years quiescence, respectively. We detected growth of ``early superhumps'' during the each rising stage. Our observations reject the mass transfer instability for the trigger of the superoutburst of WZ Sge stars, and show the existence of some relations between the ``early superhumps'' and the spiral structure, which give a hint of the origin of the ``early superhumps.'
arXiv:2004.10508v1et al.We report on photometric and spectroscopic observations and analysis of the ...
Continued from Kato et al. (2009, PASJ, 61, S395), we collected the times of superhump maxima for 68...
Although its well determined mass ratio of $q=\Msec/\Mwd=0.357\pm0.007$ should avoid superoutbursts ...
We report on time-series photometric observations in the earliest stages of superoutbursts of the ...
We carried out time-resolved photometric observations of an SU UMa type dwarf nova, BC UMa, during i...
The origin of early superhumps, which are double-wave periodic modulations seen only during the earl...
A dwarf nova HV Vir was observed photometrically for eight nights during the outburst in 1992 April ...
We investigate K2BS5, an optical transient that we identified in Campaign 13 of the Kepler/K2 archiv...
© The Author 2015. Published by Oxford University Press on behalf of the Astronomical Society of Jap...
© The Author 2014. Published by Oxford University Press on behalf of the Astronomical Society of Jap...
We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. ...
We report on time-resolved CCD photometry during the 2005 June outburst of a dwarf nova, ASAS160048-...
We report on the time-resolved CCD photometry of a newly discovered variable star, TSS J022216.4+412...
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly...
We report the photometry of a peculiar SU UMa-type dwarf nova - ER UMa for ten nights during 1998 De...
arXiv:2004.10508v1et al.We report on photometric and spectroscopic observations and analysis of the ...
Continued from Kato et al. (2009, PASJ, 61, S395), we collected the times of superhump maxima for 68...
Although its well determined mass ratio of $q=\Msec/\Mwd=0.357\pm0.007$ should avoid superoutbursts ...
We report on time-series photometric observations in the earliest stages of superoutbursts of the ...
We carried out time-resolved photometric observations of an SU UMa type dwarf nova, BC UMa, during i...
The origin of early superhumps, which are double-wave periodic modulations seen only during the earl...
A dwarf nova HV Vir was observed photometrically for eight nights during the outburst in 1992 April ...
We investigate K2BS5, an optical transient that we identified in Campaign 13 of the Kepler/K2 archiv...
© The Author 2015. Published by Oxford University Press on behalf of the Astronomical Society of Jap...
© The Author 2014. Published by Oxford University Press on behalf of the Astronomical Society of Jap...
We report the results of a worldwide campaign to observe WZ Sagittae during its 2001 superoutburst. ...
We report on time-resolved CCD photometry during the 2005 June outburst of a dwarf nova, ASAS160048-...
We report on the time-resolved CCD photometry of a newly discovered variable star, TSS J022216.4+412...
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly...
We report the photometry of a peculiar SU UMa-type dwarf nova - ER UMa for ten nights during 1998 De...
arXiv:2004.10508v1et al.We report on photometric and spectroscopic observations and analysis of the ...
Continued from Kato et al. (2009, PASJ, 61, S395), we collected the times of superhump maxima for 68...
Although its well determined mass ratio of $q=\Msec/\Mwd=0.357\pm0.007$ should avoid superoutbursts ...