AAS 197, January 2001
Session 11. Extrasolar Planets and Very Low Mass Stars
Display, Monday, January 8, 2001, 9:30am-7:00pm, Exhibit Hall

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[11.03] Photometric Examination of Possible Sub-Stellar Companions of HD155826 and HD68456

J. Brown, D. Bennum, M. Rodrigue (University of Nevada, Reno), A.B. Schultz (STScI), D. Backman (F&M College), P. Vener (Loyola College), E. Rosenthal (NOAO), B. Perriello (STScI), H. Chen (Steward Obs.), P.T.P. Ho (SAO), A. Burrows (Steward Obs.), G. Schneider (University of Arizona), C. Lisse (STScI), D. Christian (CSC/STScI), V. Gorjian (NASA/JPL)

A low-mass stellar and substellar companion search program has been completed using the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) Camera 2 coronagraph aboard the Hubble Space Telescope (HST). Coronagraphic observations of seven targets were obtained with the F165M, F171M, F180M, and F207M filters. Of the seven IR-excess stars observed, two ( HD155826 and HD68456 ) were found to have potential companions within 4" from the parent star. We report photometric measurements of the suspected companions and compare their photometry to Gliese 229B.

Support for this work was provided by NASA through grant number G0-07385.03-96A from the Space Telescope Science Institute (STScI).

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