Special Notice #111: Possible superoutburst of DH Aql
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June 4, 2008
TOAD
Alert Notice 251: 1903-50 Supernova 1998dq in NGC 6754 AND Rare outburst of the TOAD-type cataclysmic variable 1626+21 V592 Herculis AND Fading of 1544+28A R Coronae Borealis AND Request for observations of 0409-71 VW Hydri and 0749+22 U Geminorum
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 251 (August 28, 1998)
1903-50 SUPERNOVA 1998dq IN NGC 6754
Alert Notice 283: Rare superoutburst of 1227+14 AL Comae Berenices AND 1902+11 Nova Aquilae 2001 - update and new chart [V1548 Aql]
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 Fax 617-354-0665
AAVSO ALERT NOTICE 283 (May 21, 2001)
RARE SUPEROUTBURST OF 1227+14 AL COMAE BERENICES
Alert Notice 379: Support for Spitzer observations of tremendous outburst amplitude dwarf novae (TOADs)
May 16, 2008 : Dr. Steve Howell (NOAO) requests monitoring of a subset of the known and suspected tremendous outburst amplitude dwarf novae (TOADs) in support of Spitzer Space Telescope observations of these objects. Observers are asked to increase their monitoring of the objects in the table below in support of this campaign. We note that several of these objects -- notably the WZ Sge stars WZ Sge, GW Lib, and V455 And -- are not expected to superoutburst during the next year, but observations are still encouraged in case they exhibit unexpected behavior.