The rapid fading of V1647 Orionis: the sudden end of a FUor-type eruption?

Details The rapid fading of V1647 Orionis: the sudden end of a FUor-type eruption? The rapid fading of V1647 Orionis: the sudden end of a FUor-type eruption?

2005-11-25

arxiv.org/abs/astro-ph/0511733v1

Astronomy and Astrophysics

Astrophysics

Four pages, two figures, accepted by IBVS as paper No. 5661

Scientific paper

V1647 Ori is a young eruptive star, which went into outburst at the end of 2003. Since then, the object is gradually fading. In October 2005, however, V1647 Ori started a very rapid fading, approximately 1 mag/month in I_C as opposed to 0.1 mag/month previously. According to the colour changes, the rapid fading is not caused by increasing extinction, which suggests that the observed brightness changes are intrinsic. Supposing that the fading rate remains unchanged, the star will return to the pre-outburst state by mid-December 2005.

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