Infall and SiO emission in V838 Mon

Details Infall and SiO emission in V838 Mon Infall and SiO emission in V838 Mon

2005-02-21

arxiv.org/abs/astro-ph/0502410v1

Mon.Not.Roy.Astron.Soc. 359 (2005) 624-628

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2005.08936.x

We present moderate and high resolution infrared spectroscopy of the peculiar eruptive variable V838 Mon, which underwent a series of remarkable outbursts in early 2002. During the period covered by our observations, 2002 December-2003 December, the near-infrared spectrum continued to show many of the characteristics of a very cool supergiant. However, throughout this period the spectrum also revealed strong and variable SiO first overtone emission, and Paschen Beta emission. The 2003 December spectrum contained a series of Ti I lines with inverse P Cygni profiles. This is clear evidence that some material is falling inward towards the star.

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