2005/07/04 by S. Correia, R. Koehler, Correia, S. +5
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Geophysics and Sensor Technology #High-pressure geophysics and materials #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0507064
5 pages, 5 figure, to appear in the proceedings of the ESO Workshop "The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation VLTI Instrumentation", held in Garching (Germany), April 4-8, 2005
arxiv created 2005/07/04 · openalex publication_date 2005/07/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present mid-infrared interferometric observations of the Herbig Ae star R CrA obtained with MIDI at the VLTI using several projected baselines in the UT2-UT3 configuration. The observations show resolved circumstellar emission in the wavelength range 8-13 micron on a ~6 AU scale with a non-symmetric intensity distribution, providing support for an inclined disk geometry. Visibilities are best fitted using a uniform ring model with outer radius in the range 6-10 AU, in the wavelength range 8-13 micron. The inclination of the ring with respect to the plane of the sky is found to be ~45 deg., consistent with the 40 deg. suggested from near-infrared imaging polarimetry (Clark et al. 2000, MNRAS, 319, 337).