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Full-Text Articles in Physical Sciences and Mathematics
Post-Outburst Observations Of V1647 Orionis: Detection Of A Brief Warm Molecular Outflow, Sean D. Brittain, Terrence W. Rettig, Theodore Simon, Dinshaw S. Balsara, David Tilley, Erika Gibb, Kenneth H. Hinkle
Post-Outburst Observations Of V1647 Orionis: Detection Of A Brief Warm Molecular Outflow, Sean D. Brittain, Terrence W. Rettig, Theodore Simon, Dinshaw S. Balsara, David Tilley, Erika Gibb, Kenneth H. Hinkle
Sean D Brittain
We present new observations of the fundamental rovibrational CO spectrum of V1647 Ori, the young star whose recent outburst illuminated McNeil's Nebula. Previous spectra, acquired during outburst in 2004 February and July, had shown the CO emission lines to be broad and centrally peaked, similar to the CO spectrum of a typical classical T Tauri star. In this Letter, we present CO spectra acquired shortly after the luminosity of the source returned to its pre-outburst level (2006 February) and roughly 1 year later (2006 December and 2007 February). The spectrum taken in 2006 February revealed blueshifted CO absorption lines superimposed …
Near-Infrared Spectroscopic Study Of V1647 Ori, Sean D. Brittain, T W. Rettig, Theodore Simon, Erika L. Gibb, Joseph Liskowsky
Near-Infrared Spectroscopic Study Of V1647 Ori, Sean D. Brittain, T W. Rettig, Theodore Simon, Erika L. Gibb, Joseph Liskowsky
Sean D Brittain
We present new high-resolution infrared echelle spectra of V1647 Ori, the young star that illuminates McNeil's nebula. From the start, V1647 Ori has been an enigmatic source that has defied classification, in some ways resembling eruptive stars of the FUor class and in other respects the EXor variables. V1647 Ori underwent an outburst in 2003 before fading back to its pre-outburst brightness in 2006. In 2008, it underwent a new outburst. In this paper we present high-resolution K-band and M-band spectra from the W. M. Keck Observatory that were acquired during the 2008 outburst. We compare the spectra to spectra …