Open Access[ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of the Gravitational Lens FSC 10214+4724
Author(s) -
Hien T. Nguyen,
Peter Eisenhardt,
M. W. Werner,
Robert W. Goodrich,
David W. Hogg,
L. Armus,
B. T. Soifer,
G. Neugebauer
Publication year - 1999
Publication title -
the astronomical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.61
H-Index - 271
eISSN - 1538-3881
pISSN - 0004-6256
DOI - 10.1086/300742
Subject(s) - physics , position angle , gravitational lens , polarimetry , astrophysics , polarization (electrochemistry) , redshift , galaxy , brewster's angle , optics , telescope , astronomy , chemistry , scattering , brewster
We present imaging polarimetry of the extremely luminous, redshift 2.3 IRASsource FSC10214+4724. The observations were obtained with HST's Faint ObjectCamera in the F437M filter, which is free of strong emission lines. The 0.7arcsec long arc is unresolved to 0.04 arcsec FWHM in the transverse direction,and has an integrated polarization of 28 +/- 3 percent, in good agreement withground-based observations. The polarization position angle varies along the arcby up to 35 deg. The overall position angle is 62 +/- 3 deg east of north. Nocounterimage is detected to B = 27.5 mag ($3\sigma$), giving an observed arc tocounterimage flux ratio greater than 250, considerably greater than the fluxratio of 100 measured previously in the I-band. This implies that theconfiguration of the object in the source plane at the B-band is different fromthat at I-band, and/or that the lensing galaxy is dusty.Comment: 17 pages, 3 figures. Accepted for publication in Astronomical Journal, February 199
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