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The infrared properties of the new outburst star IRAS 05436-0007 in quiescent phase

P. Ábrahám·Á. Kóspál·Sz. Csizmadia·A. Moór·M. Kun·G. Stringfellow
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Abstract

We compiled and investigated the infrared/sub-mm/mm SED of the new outburst star IRAS 05436-0007 in quiescent phase. The star is a flat-spectrum source, with an estimated total luminosity of L_bol ~ 5.6 L_sun, typical of low-mass T Tauri stars. The derived circumstellar mass of 0.5 M_sun is rather high among low-mass YSOs. The observed SED differs from the SEDs of typical T Tauri stars and of 4 well-known EXors, and resembles more the SEDs of FU Orionis objects indicating the presence of a circumstellar envelope. IRAS 05436-0007 seems to be a Class II source with an age of approximately 4x10^5 yr. In this evolutionary stage an accretion disk is already fully developed, though a circumstellar envelope may also be present. Observations of the present outburst will provide additional knowledge on the source.

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P. Ábrahám, Á. Kóspál, Sz. Csizmadia, A. Moór, M. Kun, G. Stringfellow. 2004-04-13. The infrared properties of the new outburst star IRAS 05436-0007 in quiescent phase. https://doi.org/10.1051/0004-6361%3A20040138

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