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New insights into the nature of the circumstellar environment of FU Ori

Berger, Jean-Philippe and Malbet, Fabien and Colavita, Mark M. and Ségransan, Damien and Millan-Gabet, Rafael and Traub, Wes (2000) New insights into the nature of the circumstellar environment of FU Ori. In: Interferometry in Optical Astronomy. Proceedings of SPIE. No.4006. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 597-604. ISBN 9780819436313.

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Following a previous successful study, we present new and more complete interferometric observations of FU Orionis. The combination of both IOTA (Infrared and Optical Telescope Array, Mt. Hopkins, AZ) and PTI (Palomar Testbed Interferometer, Palomar Observatory, CA) interferometers allowed an increase in (u, v) coverage and H and K bands measurements. We confirm the presence of a resolved structure around FU Ori that can be interpreted in terms of accretion disk. However, we find significant differences between our results and standard accretion disks models. In particular the temperature power law is best explained if two different radial regimes are used. Moreover, a clear visibility oscillation trend at 110 m is well fitted with a binary (or hot spot) model. This may have important implications on accretion disk models for such objects.

Item Type:Book Section
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URLURL TypeDescription
Berger, Jean-Philippe0000-0001-5025-0428
Millan-Gabet, Rafael0000-0003-0447-5866
Additional Information:© 2000 Society of Photo-optical Instrumentation Engineers (SPIE).
Subject Keywords:Interferometry, infrared, young stellar objects, circumstellar matter
Series Name:Proceedings of SPIE
Issue or Number:4006
Record Number:CaltechAUTHORS:20190117-150853225
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Official Citation:Jean-Philippe Berger, Fabien Malbet, M. Mark Colavita, Damien Segransan, Rafael Millan-Gabet, Wesley A. Traub, "New insights into the nature of the circumstellar environment of FU Ori," Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390259
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92351
Deposited By: Tony Diaz
Deposited On:18 Jan 2019 02:52
Last Modified:16 Nov 2021 03:49

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