Discovery of a Nearly Edge-on Disk around HD 32297

Show simple item record Silverstone, Murray 2019-06-14T16:14:33Z 2019-06-14T16:14:33Z 2005-08-20 en_US
dc.identifier.citation Schneider, G., et al. (2005): Discovery of a Nearly Edge-on Disk around HD 32297. The Astronomical Journal, 629(2). DOI: en_US
dc.description.abstract 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. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.subject circumstellar matter en_US
dc.subject infrared: stars en_US
dc.subject planetary systems: protoplanetary disks en_US
dc.subject stars: individual (HD 32297) en_US
dc.title Discovery of a Nearly Edge-on Disk around HD 32297 en_US
dc.type text en_US

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