Direct temperature map estimation in optical long baseline interferometry

F. Soulez (1) , É. Thiébaut (2) , J. Kluska (3) , M. Tallon (2) , A. Schutz , Anthony Ferrari (4)

1 Biomedical Imaging Group [Lausanne]
2 CRAL - Centre de Recherche Astrophysique de Lyon
3 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
4 CERN - European Organization for Nuclear Research

We present a method to recontruct temperature map directly from spectro-interferometric data. It uses a sparse coding method to describe each pixel as a blackbody. Results are shown on the Herbig Be HD98922. Aside from recovering the mean environment temperature of 1654K in agreement with the photometry, this technique allows us to study the temperature distribution in the first astronomical units around the star.

Domaines: Traitement du signal et de l'image [eess.SP]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

F. Soulez, É. Thiébaut, J. Kluska, M. Tallon, A. Schutz, et al.. Direct temperature map estimation in optical long baseline interferometry. SPIE Optical and Infrared Interferometry and Imaging V, Jul 2016, Edimburgh, France. ⟨10.1117/12.2232577⟩. ⟨insu-01632758⟩