Infrared observations of V838 Mon

2006/06/20 by M. T. Rushton, T. R. Geballe, Rushton, M. T. +10
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0606491

7 pages, 7 figures, to appear in ASP Conf. Ser., The Nature of V838 Mon and Its Light Echo, eds. R.L.M. Corradi and U. Munari

arxiv created 2006/06/20 · openalex publication_date 2006/06/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We describe the results of fitting simple spherically symmetric models to the first overtone CO and AlO A-X (2-0) bands in V838 Mon. We find that the temperature and column of both CO and AlO systematically decline over the period 2002 October - 2005 February and that an additional, hotter and denser, component is present from 2005 January. We also describe the results of an observation of the star and its light echo at 850micron. We do not detect the `infrared' echo at these wavelength, and place an upper limit of 3x10⁷ cm^-2 on the column of grains.

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