Forming the dusty ring in HR 4796A

Authors
Kenyon, SJ Wood, K Whitney, BA Wolff, MJ
Citation
Sj. Kenyon et al., Forming the dusty ring in HR 4796A, ASTROPHYS J, 524(2), 1999, pp. L119-L123
Citations number
25
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
524
Issue
2
Year of publication
1999
Part
2
Pages
L119 - L123
Database
ISI
SICI code
0004-637X(19991020)524:2<L119:FTDRIH>2.0.ZU;2-C
Abstract
We describe planetesimal accretion calculations for the dusty ring observed in the nearby AO star HR 4796A. Models with initial masses of 10-20 times the minimum-mass solar nebula produce a ring with a width of 7-15 AU and a height of 0.3-0.6 AU at 70 AU in similar to 10 Myr. The ring has a radial o ptical depth of similar to 1. These results agree with limits derived from infrared images and from the excess infrared luminosity.