December 1, 2017: Dr. Deanne Coppejans (Northwestern University) and colleagues have requested AAVSO assistance in monitoring the cataclysmic variable TT Ari in support of observations scheduled to be made with the Very Large Array (VLA) in December 2017.
Dr. Coppejans writes:
October 22, 2007: The Microvariability and Oscillations of Stars (MOST) Satellite will conduct a targeted photometric observing campaign on the cataclysmic variable TT Ari, beginning 2007 October 23 UT (JD 2454397) and concluding on 2007 October 28 (JD 2454402). This observing program was proposed by a group of Austrian amateur astronomers who proposed to the "MOST fuer Alle" program of the University of Vienna, the Austrian partner project of the MOST collaboration's "My Own Space Telescope" program for Canadian observers.
Observing
Request fo
November 8, 1982
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
187 Concord Avenue, Cambridge, MA 02138 USA
Tel. 617-354-0484
SPECIAL ALERT NOTICE ON CATACLYSMIC VARIABLES
Dear Observer:
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 193 (September 29, 1994)
OUTBURST OF CATACLYSMIC VARIABLE 2325+43 DX ANDROMEDAE
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 147 (August 1,1991)
PROBABLE NOVA IN SAGITTARIUS
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 146 (July 19,1991)
SPECIAL MULTIWAVELENGTH MONITORING OF 0201+14 TT ARIETIS
The VY Sculptoris-class cataclysmic variable TT Ari has begun its first large decline since its deep minimum of 1982-1985. Observations of TT Ari are urgently requested. The 1982-1985 event reached a minimum of m(vis)=15.5, where it remained for approximately 3.5 years. Observers are asked to closely follow TT Ari through its current decline, and to continue monitoring TT Ari if and when it reaches a stable minimum.
August 25, 2012: Dr. Nikolaus Vogt (Universidad de Valparaiso, Chile) has requested photometry and spectroscopy of the novalike (VY Scl subtype) cataclysmic variable TT Ari in support of upcoming observations with the Canadian Microvariability and Oscillations of Stars (MOST) satellite.
