... candidates

Based on observations obtained at ESO La Silla (ESO Proposal 69.D-0142(A)).

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... 2000

Observed outbursts occurred on April 2000 and September 2002. Due to the broken nature of the observations is not clear whether the April 2000 outburst is just a long single one or two short, which are only $\sim$5 days apart.

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... 14.2

The detected outbursts occurred on June 1999, September 2000, plus possibly three more on June 1997, March 1998 and September 1998.

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... 2002

According to the VSNET database the outbursts occurred on July 1995, May, July, and October 1997, July and October 1998, April and July 1999, August 2000, August 2001, and July 2002.

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... lines

Though we possibly see an emission at $\sim$6482 Å.

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