The Supermassive Black Hole of M87 and the Kinematics of Its Associated Gaseous Disk
- F. Macchetto, A. Marconi, D. Axon, A. Capetti, W. Sparks, P. Crane
- Physics
- 25 June 1997
We have obtained long-slit observations of the circumnuclear region of M87 at three different locations, with a spatial sampling of 0.″028 using the Faint Object Camera f/48 spectrograph on board…
The Morphology-Density Relation in z ~ 1 Clusters
- M. Postman, M. Franx, W. Zheng
- Physics
- 12 January 2005
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 (ACS) on board…
Strong-Lensing Analysis of A1689 from Deep Advanced Camera Images
- T. Broadhurst, N. Benı́tez, W. Zheng
- Physics
- 6 September 2004
We analyze deep multicolor Advanced Camera images of the largest known gravitational lens, A1689. Radial and tangential arcs delineate the critical curves in unprecedented detail, and many small…
HUBBLE SPACE TELESCOPE Observations of Superluminal Motion in the M87 Jet
- J. Biretta, W. Sparks, F. Macchetto
- Physics
- 1 August 1999
We present observations of the M87 jet made with the Faint Object Camera on board the Hubble Space Telescope at five epochs between 1994 and 1998. These observations reveal 10 superluminal features…
A survey of the ISM in early-type galaxies. I. The ionized gas
- F. Macchetto, M. Pastoriza, M. Capaccioli
- Physics
- 1 December 1996
We present results of a CCD optical imaging survey of the ionized gas in 73 luminous elliptical and lenticular galaxies, selected from the RC3 catalog to represent a broad variety of X-ray, radio,…
Hubble Space Telescope Advanced Camera for Surveys Coronagraphic Imaging of the AU Microscopii Debris Disk
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…
An energetic stellar outburst accompanied by circumstellar light echoes
High-resolution imaging and polarimetry of light echoes indicate that V838 Mon represents a hitherto unknown type of stellar outburst, for which the authors have no completely satisfactory physical explanation.
Hubble Space Telescope ACS Multiband Coronagraphic Imaging of the Debris Disk around β Pictoris
- D. Golimowski, D. Ardila, A. Zirm
- Physics, Geology
- 14 February 2006
We present F435W (B), F606W (broad V), and F814W (broad I) coronagraphic images of the debris disk around β Pictoris obtained with the Hubble Space Telescope's Advanced Camera for Surveys. These…
The Globular Cluster System in the Inner Region of M87
- A. Kundu, B. Whitmore, W. Sparks, F. Macchetto, S. Zepf, K. Ashman
- Physics
- 1 December 1997
We have identified 1057 globular cluster candidates in a WFPC2 image of the inner region of M87. The globular cluster luminosity function (GCLF) can be well fitted by a Gaussian profile with a mean…
The Dust-Radio Connection in 3CR Radio Galaxies
- S. de Koff, P. Best, A. Martel
- Physics
- 1 July 2000
We investigate dust in the nuclear regions of radio galaxies on the basis of 120 images of 3CR radio galaxies in the redshift range 0 < z < 0.5, taken with the WFPC-2 on the Hubble Space Telescope.…
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