Interferometric Observations of V838 Monocerotis

@article{Lane2005InterferometricOO,
  title={Interferometric Observations of V838 Monocerotis},
  author={Benjamin F. Lane and A. J. Retter and R. R. Thompson and J. A. Eisner Mit and Penn State and IPACCaltech and Caltech},
  journal={The Astrophysical Journal},
  year={2005},
  volume={622}
}
We have used long-baseline near-IR interferometry to resolve the peculiar eruptive variable star V838 Mon and to provide the first direct measurement of its angular size. Assuming a uniform disk model for the emission, we derive an apparent angular diameter at the time of observations (2004 November-December) of 1.83 ± 0.06 mas. For a nominal distance of 8 ± 2 kpc, this implies a linear radius of 1570 ± 400 R☉. However, the data are somewhat better fitted by elliptical disk or binary component… 
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Spectroscopic observations of the peculiar variable V838 Mon during the period from the second light outburst until the fast dimming are presented. We describe high resolution (R ≈ 60 000) high S /N
Evolution of the Inner Circumstellar Envelope of V838 Monocerotis
We present imaging polarimetry observations of the eruptive variable V838 Monocerotis and its neighboring field obtained in 2002 October. The polarization of field stars confirms the previously
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Near - IR, multi - epoch, spectroscopic and photometric observations of the enigmatic, eruptive variable V838 Mon in the JHK bands are reported. One of the unusual features of the spectra is the
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V838 Mon underwent, after a first nova-like outburst in January and a usual decline, a second outburst after one month, and a third weak one again a month later. Moreover, a very small increase of
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