Multi-Wavelength Study of the 2008-2009 Outburst of V1647 Ori

TL;DR

This study presents multi-wavelength observations of the 2008-2009 outburst of V1647 Ori, revealing its unique eruptive behavior and suggesting it may belong to a new class of young stellar objects with distinct properties.

Contribution

The paper provides comprehensive photometric, spectroscopic, and X-ray data of V1647 Ori's 2008-2009 outburst, highlighting its differences from known eruptive star types and proposing a new classification.

Findings

V1647 Ori's outburst properties differ from EXor and FUor types.

The star illuminates McNeil's Nebula during outburst.

Multi-wavelength data reveal rapid variability and unique characteristics.

Abstract

V1647 Ori is a young eruptive variable star, illuminating a reflection nebula (McNeil's Nebula). It underwent an outburst in 2003 before fading back to its pre-outburst brightness in 2006. In 2008, V1647 Ori underwent a new outburst. The observed properties of the 2003-2006 event are different in several respects from both the EXor and FUor type outbursts, and suggest that this star might represent a new class of eruptive young stars, younger and more deeply embedded than EXors, and exhibiting variations on shorter time scales than FUors. In outburst, the star lights up the otherwise invisible McNeil's nebular - a conical cloud likely accumulated from previous outbursts. We present follow-up photometric as well as optical and near-IR spectroscopy of the nebula obtainted during the 2008-2009 outburst. We will also present results from contemporaneous X-ray observations. These multi-wavelength observations of V1647 Ori, obtained at this key early stage of the outburst, provide a snapshot of the "lighting up" of the nebula, probe its evolution through the event, and enable comparison with the 2003-2006 outburst.