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HD141569A: Disk Dissipation Caught in Action

Published online by Cambridge University Press:  27 January 2016

J. Péricaud ,
E. Di Folco ,
A. Dutrey ,
J.-C. Augereau ,
V. Piétu  and
S. Guilloteau
J. Péricaud
Affiliation:
Univ. Bordeaux, LAB, UMR 5804, F-33270, Floirac, France email: [email protected] CNRS, LAB, UMR 5804, F-33270, Floirac, France
E. Di Folco
Affiliation:
Univ. Bordeaux, LAB, UMR 5804, F-33270, Floirac, France email: [email protected] CNRS, LAB, UMR 5804, F-33270, Floirac, France
A. Dutrey
Affiliation:
Univ. Bordeaux, LAB, UMR 5804, F-33270, Floirac, France email: [email protected] CNRS, LAB, UMR 5804, F-33270, Floirac, France
J.-C. Augereau
Affiliation:
Université' Grenoble Alpes, IPAG, 38000 Grenoble, France CNRS, IPAG, 38000 Grenoble, France
V. Piétu
Affiliation:
IRAM, 300 rue de la piscine, F-38046 Saint Martin d'Hères, France
S. Guilloteau
Affiliation:
Univ. Bordeaux, LAB, UMR 5804, F-33270, Floirac, France email: [email protected] CNRS, LAB, UMR 5804, F-33270, Floirac, France
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Abstract

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Debris disks are usually thought to be gas-poor, the gas being dissipated by accretion or evaporation during the protoplanetary phase. HD141569A is a 5 Myr old star harboring a famous debris disk, with multiple rings and spiral features. I present here the first PdBI maps of the 12CO(2−1), 13CO(2−1) gas and dust emission at 1.3 mm in this disk. The analysis reveals there is still a large amount of (primordial) gas extending out to 250 AU, i.e. inside the rings observed in scattered light. HD141569A is thus a hybrid disk with a huge debris component, where dust has evolved and is produced by collisions, with a large remnant reservoir of gas.

Keywords

stars: circumstellar matterprotoplanetary disksradio-lines: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 201 - 202
Copyright
Copyright © International Astronomical Union 2016 

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