[vsnet-alert 12207] SDSS J080434.20+510349.2: superhumps and eclipses

Taichi Kato tkato at kusastro.kyoto-u.ac.jp
Tue Sep 28 16:06:29 JST 2010

SDSS J080434.20+510349.2: superhumps and eclipses

   Enrique de Miguel and Ian Miller have reported further observations.
The mean superhump period since Sep. 24 has been 0.05949(2) d, yet without
a significant period change.  This period corresponds to a fractional
superhump excess of 0.8 %.

   The most recent data (Sep. 28) by Enrique de Miguel show a sharper
feature of eclipses (at the expected phase) on the descending branch from
superhump maxima.  Since this object is likely a grazing eclipser,
further continued observations will provide crucial information where
the spot (hump) is formed and on the variation of the size of the accretion
disk.  Higher time-resolution (~30 s or better) is preferred, if the S/N
is not too low, to better illustrate the structure of eclipses.

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