Special Notice #111: Possible superoutburst of DH Aql
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June 4, 2008
Spitzer
Special Notice #180: Request for observations of V420 Aur in support of Spitzer Space Telescope observations
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AAVSO Special Notice #180
Request fo
Special Notice #408: Developing planetary systems dust production study - second segment of observations
October 2, 2015: Further to AAVSO Alert Notice 511, issued in March 2015, Dr. George Rieke (University of Arizona) and colleagues' campaign to monitor planetary debris disks for variability using the Spitzer Space Telescope continues. AAVSO observations are requested to rule out variability of the stars themselves.
The second segment of observations of the four targets takes place from now into January 2016 according to the schedule below.
Alert Notice 511: Monitoring requested for developing planetary systems dust production study
Campaign continued through 2017 at least. Also, campaign updated in AAVSO Special Notice #408 (20151002).
March 13, 2015: Dr. George Rieke (University of Arizona) and colleagues have requested AAVSO assistance in monitoring four stars with developing planetary systems. The targets are RZ Psc, HD 15407A, V488 Per, and HD 23514. This campaign is similar to the one conducted in 2013 (see AAVSO Alert Notice 482).
Alert Notice 321: Multicolor CCD campaign for AS 325 to support Spitzer observations
July 13, 2005
Summary
We request nightly BVRI CCD observations of the symbiotic eclipsing binary star AS 325 until December 1, 2005. The goal of the campaign is to determine the nature of this enigmatic system by looking for changes in color during the current eclipse and also to support upcoming observations with the Spitzer Space Telescope planned for September.
Alert Notice 324: 1614-15 V818 Sco - Request for observations to support Spitzer observations
August 17, 2005: Our assistance has been requested by Dr. Stefanie Wachter, Spitzer Science Center, Caltech, in observing the low-mass x-ray binary V818 Sco (Sco X-1) in support of her upcoming Spitzer observations of this object.
Alert Notice 340: Request to monitor 1744-06 RS Ophiuchi for multiwavelength campaign AND Correction
September 1, 2006
ALERT NOTICE 340 Correction (September 1, 2006)
Re: REQUEST TO MONITOR 1744-06 RS OPHIUCHI FOR MULTIWAVELENGTH CAMPAIGN
Object: 1744-06 RS OPH
Coordinates: R.A. 17h 50m 13.202s Dec. -06o 42' 28.48" (2000.0)
Alert Notice 348: Observe HMXBs; monitor AR UMa; update on Alert Notice 345
HMXB campaign extended until further notice. It has been updated numerous times and covered in AAVSO Alert Notices 348, 354, and 377, and in AAVSO Special Notices #118, #129, #143, #213, and #220.
April 6, 2007
SUBJECTS:
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.