Hostname: page-component-77c89778f8-n9wrp Total loading time: 0 Render date: 2024-07-21T04:26:03.591Z Has data issue: false hasContentIssue false

The circumstellar environment of the FS CMa star IRAS 00470+6429

Published online by Cambridge University Press:  12 July 2011

Alex C. Carciofi
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão 1226, Cidade Universitária, 05508-900, São Paulo, SP, BRAZIL email:
Anatoly S. Miroshnichenko
Department of Physics and Astronomy, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
Jon E. Bjorkman
Ritter Observatory, M.S. 113, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH 43606-3390, USA
Rights & Permissions [Opens in a new window]


Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

FS CMa type stars are a recently described group of objects with the B[e] phenomenon that exhibit strong emission-line spectra and strong IR excesses. In this paper we report the first attempt for a detailed modeling of IRAS 00470+6429, for which we have the best set of observations. Our modeling is based on two key assumptions: the star has a main-sequence luminosity for its spectral type (B2) and that the circumstellar (CS) envelope is bimodal, composed of a slowly outflowing disk-like wind and a fast polar wind. Both outflows are assumed to be purely radial. We adopt a novel approach to describe the dust formation site in the wind that employs timescale arguments for grain condensation and a self-consistent solution for the dust destruction surface. With the above assumptions we were able to reproduce satisfactorily many observational properties of IRAS 00470+6429, including the HI line profiles and the overall shape of the spectral energy distribution.

Contributed Papers
Copyright © International Astronomical Union 2011


Carciofi, A. C. & Bjorkman, J. E. 2006, ApJ, 639, 1081Google Scholar
Carciofi, A. C., Miroshnichenko, A. S. & Bjorkman, J. E. 2010, ApJ, 721, 1079Google Scholar
Lamers, H. J. G. L. M., Zickgraf, F.-J., de Winter, D., Houziaux, L. et al. 1998, A&A, 340, 117Google Scholar
Miroshnichenko, A. S. 2007, ApJ, 667, 497Google Scholar
Miroshnichenko, A. S., Chentsov, E. L., Klochkova, V. G., Zharikov, S. V. et al. 2009, ApJ, 700, 209Google Scholar