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Cometary Dust in the Debris of HD 31648 and HD163296: Two "Baby" Beta pictoris StarsThe debris disks surrounding the pre-main-sequence stars HD 31648 and HD 163296 were observed spectroscopically between 3 and 14 microns. Both stars possess a silicate emission feature at 10 Am that resembles that of the star P Pictoris and those observed in solar system comets. The structure of the band is consistent with a mixture of olivine and pyroxene material, plus an underlying continuum of unspecified origin. The similarity in both size and structure of the silicate band suggests that the material in these systems had a processing history similar to that in our own solar system prior to the time that the grains were incorporated into comets.
Document ID
19990064478
Acquisition Source
Jet Propulsion Laboratory
Document Type
Reprint (Version printed in journal)
Authors
Sitko, Michael L.
(Cincinnati Univ. OH United States)
Grady, Carol A.
(Eureka Scientific, Inc. Oakland, CA United States)
Lynch, David K.
(Aerospace Corp. Los Angeles, CA United States)
Russell, Ray W.
(Aerospace Corp. Los Angeles, CA United States)
Hanner, Martha S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Publication Information
Publication: Astrophysical Journal
Publisher: American Astronomical Society
Volume: 510
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Other

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