Discovery of a nearly edge-on disk around HD 32297

Glenn Schneider, Murray D. Silverstone, Dean C. Hines

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


We report the discovery of a nearly edge-on disk about the A0 star HD 32297 seen in light scattered by the disk grains revealed in NICMOS PSF-subtracted coronagraphic images. The disk extends to a distance of at least 400 AU (3″3) along its major axis with a 1.1 μm flux density of 4.81 ± 0.57 mJy beyond a radius of 0″.3 from the coronagraphically occulted star. The fraction of 1.1 μm starlight scattered by the disk, 0. 0033 ±0.0004, is comparable to its fractional excess emission at 25 + 60 μm of ∼0.0027 as measured from IRAS data. The disk appears to be inclined 10°.5 ± 2°.5 from an edge-on viewing geometry, with its major axis oriented 236°.5 ± 1° eastward of north. The disk exhibits unequal brightness on opposing sides and a break in the surface brightness profile along the NE-side disk major axis. Such asymmetries might implicate the existence of one or more (unseen) planetary mass companions.

Original languageEnglish (US)
Pages (from-to)L117-L120
JournalAstrophysical Journal
Issue number2 II
StatePublished - Aug 20 2005


  • Circumstellar matter
  • Infrared: Stars
  • Planetary systems: Protoplanetary disks
  • Stars: Individual (HD 32297)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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