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cataclysmic variable

Special Notice #42: Outburst of GW Lib

April 12, 2007

Rod Stubbings reports via Daisaku Nogami/VSNET that the cataclysmic variable GW Lib is currently in outburst, at a visual magnitude of 13.8. Follow-up observations are urgently requested. The object is located at

RA: 15h 19m 55.4s, Dec: -25d 00m 25s (J2000)

An AAVSO chart is available at the following URL:

http://www.aavso.org/cgi-bin/searchcharts3.pl?name=GW%20Lib]

2016 link: https://www.aavso.org/vsp

 

Special Notice #26: Possible Minor Outburst of 0324+43 GK Persei

December 15, 2006

Coordinates: 03:31:11.82 +43:54:16.8 (2000.0)

Recent observations of the old nova intermediate polar magnetic catclysmic variable GK Per (Nova Per 1901) show the star brighter than minimum. However, it is too early to tell if an outburst is underway.

Alert Notice (un-numbered July 31, 1974): AAVSO Alert Notices

July 31, 1974

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
187 Concord Avenue, Cambridge, MA 02138 USA
Tel. 617-354-0484

AAVSO ALERT NOTICES

URGENT SPECIAL REQUEST

Special Notice #414: SS Cyg monitoring continues for radio campaign

April 5, 2016: Further to AAVSO Alert Notice 536, close monitoring of the cataclysmic variable SS Cyg is urgently requested. Immediate notification of the beginning of the anticipated outburst is crucial and is requested.

The success of the multiwavelength (radio and optical) observing campaign on SS Cyg underway depends on immediate reporting of outburst behavior to trigger multi-site radio observations.

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