Linda D Bradley

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We present Hubble Space Telescope Advanced Camera for Surveys multicolor coronagraphic images of the recently discovered edge-on debris disk around the nearby ($10 pc) M dwarf AU Microscopii. The disk is seen between r ¼ 0B75 and 15 00 (7.5–150 AU) from the star. It has a thin midplane with a projected FWHM thickness of 2.5–3.5 AU within r < 50 AU of the(More)
  • M J Jee, H C Ford, +13 authors And S Mei
  • 2008
We present a comprehensive mass reconstruction of the rich galaxy cluster Cl 0024+17 at z ≃ 0.4 from ACS data, unifying both strong-and weak-lensing constraints. The weak-lensing signal from a dense distribution of background galaxies (∼ 120 arcmin −2) across the cluster enables the derivation of a high-resolution parameter-free mass map. The(More)
We present F435W (B), F606W (broad V), and F814W (broad I) coronagraphic images of the debris disk around Pictoris obtained with the Hubble Space Telescope's Advanced Camera for Surveys. These images provide the most photometrically accurate and morphologically detailed views of the disk between 30 and 300 AU from the star ever recorded in scattered light.(More)
We measure the morphology–density relation (MDR) and morphology-radius relation (MRR) for galaxies in seven z ∼ 1 clusters that have been observed with the Advanced Camera for Surveys on board the Hubble Space Telescope. Simulations and independent comparisons of our visually derived morphologies indicate that ACS allows one to distinguish between E, S0,(More)
Searches for very-high-redshift galaxies over the past decade have yielded a large sample of more than 6,000 galaxies existing just 900-2,000 million years (Myr) after the Big Bang (redshifts 6 > z > 3; ref. 1). The Hubble Ultra Deep Field (HUDF09) data have yielded the first reliable detections of z ≈ 8 galaxies that, together with reports of a γ-ray burst(More)
In the treatment of women with abnormal uterine bleeding, once a thorough history, physical examination, and indicated imaging studies are performed and all significant structural causes are excluded, medical management is the first-line approach. Determining the acuity of the bleeding, the patient's medical history, assessing risk factors, and establishing(More)
We present HST ACS observations of the most distant radio galaxy known, TN J0924À2201 at z ¼ 5:2. This radio galaxy has six spectroscopically confirmed Ly-emitting companion galaxies and appears to lie within an overdense region. The radio galaxy is marginally resolved in i 775 and z 850 , showing continuum emission aligned with the radio axis, similar to(More)
The color-magnitude relation has been determined for the RDCS J0910+5422 cluster of galaxies at redshift z = 1.106. Cluster members were selected from HST Advanced Camera for Surveys (ACS) images, combined with ground–based near–IR imaging and optical spectroscopy. Postman et al. (2005) morphological classifications were used to identify the early-type(More)
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