Imaging Asteroidal Companions with the Hubble Space Telescope (HST)

Details Imaging Asteroidal Companions with the Hubble Space Telescope (HST) Imaging Asteroidal Companions with the Hubble Space Telescope (HST)

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002dps....34.1417s&link_type=abstract

American Astronomical Society, DPS Meeting #34, #14.17; Bulletin of the American Astronomical Society, Vol. 34, p.861

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We present photometry of companions to asteroids 45 Eugenia, 87 Sylvia, and 107 Camilla, in the visible region. Direct imaging with the Wide-Field/Planetary Camera 2 (WFPC-2) clearly shows both the primary and companion objects in the F439W, F673N, and F791W filters (central wavelengths are 439, 673, and 791 nm respectively). Companions to 107 and 45 have colors similar to their primaries, but the companion to 87 Sylvia appears markedly bluer in the 439nm - 791nm region. We discuss the careful photometric reduction process necessary to quantify this color. This slope may be indicative of particle size or mineralogic alteration of the surface of the companion. This work was supported by grant GO-08583.08-A from the Space Telescope Science Institute. The Hubble Space Telescope is operated by the Space Telescope Science Institute under NASA grant NAS5-26555.

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