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Reported outburst of the WZ Sge star AL Comae

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發表於 2013-12-7 11:57:43 | 顯示全部樓層 |閱讀模式
AAVSO Special Notice #377

Reported outburst of the WZ Sge star AL Comae December 6,2013

Observer Carlo Gualdoni reports via the cvnet-outburstmailing list that the WZ Sge-type dwarf nova AL Comae is in outburst, with amagnitude of V=12.74 on 2013 December 6.185 (JD 2456633.1185).  Gary Poyner notes on the BAAVSS mailing listthat this is the first observed outburst of AL Com since October 2007.  Both visual observations and CCD time seriesare encouraged.

AL Comae has typically faded quickly during pastoutbursts, but will exhibit rebrightenings during the event.  Unfiltered time-series observations may beuseful to detect any periodic behavior; photometry of the overall outburst isalso useful.  The star is fainter thanV=20 at quiescence.

AL Com is located at the following (J2000) coordinates:

        RA: 12 3225.9 , Decl: +14 20 43.5

Please report all observations to the AAVSO with the name"AL COM".

This AAVSO Special Notice was prepared by M. Templeton.

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