30 research outputs found
Leo5 Is a Z Cam Type Dwarf Nova
Photometry of Leo5 = 1H 1025+220 show that it is a dwarf nova of the Z Cam
subtype. Two long standstills have been observed in the last five years.Comment: Accepted for publication in JAAVS
The 2011 February superoutburst of the dwarf nova SDSS J112003.40+663632.4
We report unfiltered photometry of SDSS J112003.40+663632.4 during the 2011
February outburst which revealed the presence of superhumps with peak-to-peak
amplitude of up to 0.22 magnitudes showing this to be an SU UMa type dwarf
nova. The outburst amplitude was 5.4 magnitudes above mean quiescence and it
lasted at least 12 days. The mean superhump period during the plateau phase was
Psh = 0.07057(19) d.Comment: Accepted for publication in the Journal of the British Astronomical
Association. 12 pages, 5 figure