The Circumstellar Disk of HD 141569 Imaged with NICMOS | Zendy

Alycia J. Weinberger | Zendy; E. E. Becklin | Zendy; Glenn Schneider | Zendy; B. A. Smith | Zendy; Patrick Lowrance | Zendy; M. D. Silverstone | Zendy; B. Zuckerman | Zendy; R. J. Terrile | Zendy

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The Circumstellar Disk of HD 141569 Imaged with NICMOS

Author(s) -

Alycia J. Weinberger,

E. E. Becklin,

Glenn Schneider,

B. A. Smith,

Patrick Lowrance,

M. D. Silverstone,

B. Zuckerman,

R. J. Terrile

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312334

Subject(s) - physics , astrophysics , position angle , radius , planet , circumstellar disk , astronomy , star (game theory) , debris disk , line of sight , circumstellar dust , stars , planetary system , computer security , galaxy , computer science

Coronagraphic imaging with the Near-Infrared Camera and Multiobject Spectrometer on the Hubble Space Telescope reveals a large, approximately 400 AU (4&arcsec;) radius, circumstellar disk around the Herbig Ae/Be star HD 141569. A reflected light image at 1.1 µm shows the disk oriented at a position angle of 356&j0;+/-5&j0; and inclined to our line of sight by 51&j0;+/-3&j0;; the intrinsic scattering function of the dust in the disk makes the side inclined toward us, the eastern side, brighter. The disk flux density peaks 185 AU (1&farcs;85) from the star and falls off to both larger and smaller radii. A region of depleted material, or a gap, in the disk is centered 250 AU from the star. The dynamical effect of one or more planets may be necessary to explain this morphology.

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