Special Notice #168: Outburst of the symbiotic star Z Andromedae
*/
/*-->*/
AAVSO Special Notice #168
Outburst o
symbiotic variable
Alert Notice 171: 2252-36 SN 1993L in IC 5270 AND Request to monitor SS Cyg and AD Leo for ASCA mission AND VY Aqr outburst AND BZ UMa outburst AND Supernova 1993J in NGC 3031 AND Nova Oph 1993 [V2295 Oph] AND 1809-00 FG Ser (AS 296) (Desig revised)
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
INTERNET: aavso@cfa0.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 171 (May 5,1993)
2252-36 SN 1993L in IC 5270
Alert Notice 167: The symbiotic star 1810-00 FG Serpentis (AS 296) AND Forthcoming outburst of 0749+22 U Geminorum
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
INTERNET: aavso@cfa0.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 167 (February 1, 1993)
THE SYMBIOTIC STAR 1810-00 FG SERPENTIS (AS 296)
Special Notice #429: V694 Mon (MWC 560) spectroscopy requested
May 2, 2017: Further to AAVSO Alert Notice 538, the campaign from 2016 on V694 Mon (MWC 560) has been continued, but with different requirements. Photometry is no longer specifically requested on a regular basis (although ongoing observations that do not interfere with other obligations are welcome). Spectroscopy on a cadence of a week or two is requested to monitor changes in the disk outflow. V694 Mon is presently nearing opposition, but the request for spectroscopy continues until further notice.
Alert Notice 572: AG Dra monitoring requested
April 3, 2017: Dr. Rudolf Gális (Pavel Jozef Šafárik University (Slovakia)) and colleagues have requested AAVSO assistance in observing the symbiotic variable AG Dra. Observations are requested as a follow-up to spectroscopic observations and in order to monitor the system for an anticipated outburst.
Special Notice #417: CH Cygni B and V photometry urgently requested
REQUEST CONTINUED THROUGH 2018
June 3, 2016: Dr. Margarita Karovska (Harvard-Smithosonian Center for Astrophysics) is urgently requesting B and V photometry of the symbiotic variable CH Cyg from now until at least the end of August. Observations made twice a week are sufficient; time series observations are not needed. Spectroscopy would also be very welcome and appreciated.
Alert Notice 170: 1721-23 Nova Ophiuchi 1993 [V2295 Oph] AND 0946+69 Supernova in NGC 3031 (M81) [SN 1993J] AND 1810-00 FG Serpentis (AS 296)
April 22, 1993
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 170 (April 22, 1993)
1719-23 NOVA OPHIUCHI 1993 [V2295 Oph]
Special Notice #415: T CrB brighter and bluer - monitoring requested
April 8, 2016: The symbiotic recurrent nova T CrB has entered a super-active state, and it is brighter and bluer than it has been since before its last outburst in 1946. Multicolor and visual ongoing observations are requested.
Alert Notice 538: Observations of V694 Mon (MWC 560) requested for Chandra campaign
February 26, 2016: Dr. Jeno Sokoloski (Columbia University) and Mx. Adrian Lucy (graduate student, Columbia University) have requested AAVSO observations of the jet-driving symbiotic star V694 Mon (MWC 560), which is in outburst, in support of upcoming Chandra observations to investigate the state of the inner accretion disk during this outburst.
The Chandra observations are scheduled (preliminary schedule) for 2016 March 8 (7:17-14:13 UTC) and March 9 (2:20-9:17 UTC).
Special Notice #411: RT Cru observations need to be continued
December 15, 2015: Further to AAVSO Alert Notice 503 and AAVSO Special Notice #409, Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) urgently requests that multicolor and visual AAVSO observations of the symbiotic variable RT Cru continue.