Note: Please continue coverage of ASASSN-V J195442.95+172212.6 (TCP J19544251+1722281 = Vend47) until further notice. - Elizabeth O. Waagen, 13 April 2020
August 14, 2018
April 25, 2018: Dr. Jeno Sokoloski (Columbia University) and Mx. Adrian Lucy (graduate student, Columbia University) have requested AAVSO observations in support of a search underway by Mx. Lucy for symbiotic stars.
February 10, 2017: Dr. Ed Sion (Villanova University) and colleagues have requested AAVSO observers' assistance in monitoring the symbiotic-type recurrent nova IM Nor in support of observations with the Hubble Space Telescope Cosmic Origins Spectrograph scheduled for 2017 February 13 - 17 UT.
These observations are part of a study on short orbital period recurrent novae as Supernovae Type Ia progenitors.
Ongoing visual, photometric, and spectroscopic observations of R Aqr about once every 10 days are requested, both to detect and observe the next eclipse and to continue the light curve of this star that has been in the AAVSO observing program for over a century. Elizabeth O. Waagen, August 2017, March 2019
June 20, 2013: Dr. Andrea Dupree (Harvard-Smithsonian Center for Astrophysics) has requested AAVSO monitoring of the symbiotic variable AG Draconis from now through at least September 2013 for correlation with upcoming Chandra x-ray and HST ultraviolet observations.
Campaign continued through 2018. Also, campaign has been updated in Special Notice #417 (20160603), Special Notice #320 (20130109), Special Notice #294 (20120911), Special Notice #268, (20120323 ), and Special Notice #267 (20120315).
