[vsnet-alert 11326] Re: (fwd) IL Vul superoutburst

[Taichi Kato]

Re: (fwd) IL Vul superoutburst

   Past messages.   Further confirmatory observations (as an SU UMa-type
dwarf nova) are encouraged.

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[vsnet-alert 8524] IL Vul extremely rare outburst

Unfiltered CCD observations by P. Schmeer, Bischmisheim, Germany:
VULIL 20050616.414 <175CR Scp
VULIL 20050703.388  155CR Scp
Instrument: University of Iowa, Rigel Telescope (0.37-m Cassegrain)
Sequence: USNO-A2.0 catalogue (R magnitudes)

Only one certain (1964) and two rather certain outbursts
(1930, 1955) of this dwarf nova were observed before:
1930 Aug. 20, mag 15.5
1955 Sep. 22, mag 15
1964 Aug. 14.98 UT, mag 15 (JD 2438622.48, not 242...)
(C. Hoffmeister, IBVS 80)

On the outburst image I measured the following position:
R.A. 20h38m32.72s  Decl. +22o42'16.7"  (J2000.0)

Time-series photometry is very urgently required (perhaps
also spectroscopy).
 
Regards,
Patrick

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[vsnet-campaign-dn 4463] IL Vul: no sign of superhumps?

IL Vul: no sign of superhumps?

   According to Tom Krajci (CVNET message), no sign of superhumps was
detected.  The object was also reported to be stedily fading.  Could be
an SS Cyg-type star (as inferred from the IBVS light curve), or a short,
normal outburst?