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On the Possibility of V4444 Sgr as a Recurrent Nova

T. Kato·H. Yamaoka·S. Kiyota
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Abstract

V4444 Sgr (Nova Sgr 1999) has been recently suggested to be a possible recurrent nova based on the detection of the preexisting dust, which may have been formed in a previous outburst. We examined this possibility using the available outburst observations, including the VSNET observations. We also noticed that this nova was recorded in the OGLE II public photometric database, which covered both preoutburst and late decline phases. The outburst light curve constructed from these observations showed a plateau phase, particularly in the OGLE II I-band light curve, which was followed by a more rapid decline. The light curve resembled those of "fast" recurrent novae and candidates in the presence of the distinct plateau phase. The outburst spectrum and the preoutburst magnitude more resembled those of classical novae, but they do not exclude the possibility of a recurrent nova.

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T. Kato, H. Yamaoka, S. Kiyota. 2003-09-02. On the Possibility of V4444 Sgr as a Recurrent Nova. https://doi.org/10.1093/pasj%2F56.sp1.s83

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