THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 227 (August 28, 1996)
1205-61 PROBABLE NOVA IN CRUX
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 237 (February 19, 1997)
OBSERVATIONS OF DWARF NOVAE REQUESTED
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 242 (November 3, 1997)
SUPEROUTBURST OF 2110+13 EF PEGASI
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665
AAVSO ALERT NOTICE 251 (August 28, 1998)
1903-50 SUPERNOVA 1998dq IN NGC 6754
November 22, 2004
SUBJECTS:
1. APPARENT NOVA IN PUPPIS: 0737-26 N PUP 04
2. REQUEST TO MONITOR 0749+22 U GEMINORUM
1. 0737-26 N PUP 04 - APPARENT NOVA
Event: Apparent nova
Discovered (Independently) By: Akihiko Tago, Tsuyama, Okayama-ken, Japan, and Yukio Sakurai, Mito, Ibaragi-ken, Japan (IAU Circular 8443)
Discovery Magnitude: 7.6 photographic (Tago), and 7.4 CCD (Sakurai) (IAU Circular 8443)
February 11, 2005
SUBJECTS:
1. 2005+39 N CYGNI 2005
2. 1258-49 SN 2005af in NGC 4945 (CENTAURUS)
3. REMINDER TO MONITOR 0749+22 U GEMINORUM
1. 2005+39 N CYGNI 2005 [V2361 CYG]
Event: Possible nova
ALERT NOTICE 314 (March 16, 2005)
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.
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:
November 5, 2007: Dr. Elmar Koerding, University of Southampton, England, and his collaborators have requested our assistance in a continuing project to monitor two dwarf novae -- U Geminorum (0749+22) and SS Cygni (2138+43) -- in support of radio observations with the MERLIN and VLA telescopes. This new campaign is a continuation of the project described in AAVSO Alert Notice 345. Koerding and collaborators are attempting to detect and characterize radio emission from dwarf novae during outbursts.
