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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 358652.0, MPI für Astronomie / Publikationen_mpia
The carbon star IRC+10216: linking the complex inner region with its spherical large-scale structures
Authors:Menut, J. L.; Gendron, E.; Schartmann, M.; Tuthill, P.; Lopez, B.; Danchi, W. C.; Wolf, S.; Lagrange, A. M.; Flament, S.; Rouan, D.; Clénet, Y.; Berruyer, N.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Monthly Notices of the Royal Astronomical Society
Volume:376
Issue / Number:1
Start Page:L7
End Page:L10
Audience:Not Specified
Abstract / Description:IRC+10216 is located at the tip of the asymptotic giant branch of the Hertzsprung-Russell diagram in a transition phase toward the post-asymptotic giant branch stage. Its study contributes to our knowledge of the late stage of stellar evolution of low- and intermediate-mass stars, when the circumstellar matter begins to adopt the asymmetric or bipolar forms commonly found in planetary nebulae. Using the NAOS-CONICA (NACO) adaptive optics system, we have mapped the circumstellar environment of IRC+1O216 at several wavelengths and three different epochs. The NACO study provides high-resolution and high-dynamic-range information on the different features displayed by the circumstellar envelope: clumpiness and a peanut- or bipolar-like shape at small scales. The link between the inner regions and the spherical-like shells observed at large scales is displayed in these high-dynamic-range data.
Free Keywords:instrumentation: adaptive optics ; stars: AGB and post-AGB ; circumstellar matter ; infrared: stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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