The Circumstellar Environment of HD 97048: HST/ACS Scattered-Light Imaging and Dust Modeling

Details The Circumstellar Environment of HD 97048: HST/ACS Scattered-Light Imaging and Dust Modeling The Circumstellar Environment of HD 97048: HST/ACS Scattered-Light Imaging and Dust Modeling

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20912702d&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #127.02; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a resolved scattered-light image of the circumstellar environment around the Herbig Ae/Be star HD 97048 using the Hubble Space Telescope Advanced Camera for Surveys in its coronagraphic mode. The observations were carried out with the 1.8" occulting spot through the F606W (broad V) filter. Dusty material is traced out to an angular distance of 4" from the star's position. The material's azimuthally-averaged surface brightness peaks at r = 2" (the innermost measurable radius) and drops off as r to the -3.3 power. Filamentary structure resembling spiral arms similar to that seen in Herbig Ae/Be disks is observed. Such structure has been attributed to the influence of orbiting planets or stellar encounters. Radiative transfer modeling will provide a detailed analysis of HD 97048's circumstellar dust. We will use an axisymmetric code to derive dust parameters including mass, composition, grain size distribution, geometry, and inclination angle. NASA/STScI GO-10425.01 supported this work.

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