cataclysmic variables

Alert Notice 758: Monitoring requested for 11 dwarf novae in support of HST observations in 2021-2022

Note:  GP Com observations will take place April 29-30, 2022; coverage is needed until May 20. See Alert Notice 775.  -  Elizabeth O. Waagen, April 27, 2022

SDSS J154453.60+255348.8 will not be observed by HST during April. V1239 Her and V493 Gem have been observed and observations of them are no longer needed.   -  Elizabeth O. Waagen, April 5, 2022

Alert Notice 137: Last list for monitoring of ROSAT targets

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
    25 Birch Street, Cambridge, MA 02138 USA
    BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
     Tel. 617-354-0484 FAX 617-354-0665

    AAVSO ALERT NOTICE 137 (January 14,1991) 

LAST LIST FOR MONITORING OF ROSAT TARGETS

Alert Notice 339: Far Ultraviolet Spectroscopic Explorer Cataclysmic Variable Survey AND Preliminary NGC 6811 Deep and Wide Field Campaign Announcement

July 6, 2006

1. FAR ULTRAVIOLET SPECTROSCOPIC EXPLORER (FUSE) CATACLYSMIC VARIABLE SURVEY

Dr. Patrick Godon (Villanova University) has requested help for a campaign to observe cataclysmic variables with the orbiting FUSE observatory. The goals of these observations are to help schedule the FUSE observing time and to obtain time series optical data simultaneously with the FUSE observations for correlation of the optical and ultraviolet data.

Alert Notice 345: Request to monitor cataclysmic variables for radio observations

February 15, 2007: Dr. Christian Knigge, University of Southampton, England, has requested our assistance in monitoring ten (10) dwarf novae cataclysmic variables as part of a search for radio jet formation during outbursts. Dr. Knigge is attempting to observe a dwarf nova outburst within six hours of the outburst onset using the NRAO Very Large Array (VLA) telescope in New Mexico and the Jodrell Bank MERLIN telescope in the United Kingdom.

AAVSO observers help solve a mystery about an important variable star

A group of astronomers led by Dr. James Miller-Jones of Curtin University and the International Centre for Radio Astronomy Research have published a revised distance to the famed variable star SS Cygni, solving a major mystery surrounding this star and its behavior.  Their work was made possible due to the dedication of dozens of observers worldwide who monitor SS Cygni and report their observations to the American Association of Variable Star Observers (AAVSO).