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QSOs in the combined SDSS/GALEX database
J. B. Hutchings, L. Bianchi
We discuss selection of QSO candidates from the combined SDSS and GALEX catalogues. We discuss properties of QSOs within the combined sample, and note uncertainties in number count…
Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
Chris J. Willott, Philippe Delorme, Alain Omont +15
The Canada-France High-z Quasar Survey (CFHQS) is an optical survey designed to locate quasars during the epoch of reionization. In this paper we present the discovery of the first…
Simultaneous Ultraviolet and X-ray Observations of the Seyfert Galaxy NGC 4151. II. Physical Conditions in the UV Absorbers
S. B. Kraemer, D. M. Crenshaw, J. R. Gabel +8
We present a detailed analysis of the intrinsic absorption in the Seyfert 1 galaxy NGC 4151 using UV spectra from the HST/STIS and FUSE, obtained 2002 May as part of a set of conte…
OVI Asymmetry and an Accelerated Outflow in an Obscured Seyfert: FUSE and HST STIS Spectroscopy of Markarian533
Prajval Shastri, John Hutchings, Jayant Murthy +2
We present far-ultraviolet spectra of the Seyfert2 galaxy Mrk533 obtained with FUSE. These spectra show narrow asymmetrical OVI 1032,1038 emission lines with stronger wings shortwa…
HST STIS spectroscopy of the triple nucleus of M31: two nested disks in Keplerian rotation around a Supermassive Black Hole
Ralf Bender, John Kormendy, Gary Bower +12
We present HST spectroscopy of the nucleus of M31 obtained with STIS. Spectra taken around the CaT lines at 8500 see only the red giants in the double bright- ness peaks P1 and P2.…
Intrinsic Absorption in the Spectrum of NGC 7469: Simultaneous Chandra, FUSE, and STIS Observations
Jennifer E. Scott, Gerard A. Kriss, Julia C. Lee +10
We present simultaneous X-ray, far-ultraviolet, and near-ultraviolet spectra of the Seyfert 1 galaxy NGC 7469 obtained with the Chandra X-Ray Observatory, the Far Ultraviolet Spect…
FUSE Observations of RX J0513.9-6951
J. B. Hutchings, A. P. Cowley, R. Mann +2
FUSE observations were obtained in July 2003 during 1.2 cycles of the 0.76-day binary orbit of RX J0513.9-6951. Radial velocity measurements of the broad O VI emission profile show…
Imaging of SDSS z>6 quasar fields: gravitational lensing, companion galaxies and the host dark matter halos
Chris J. Willott, Will J. Percival, Ross J. McLure +5
We have undertaken deep optical imaging observations of three 6.2<z<6.5 quasar fields in the i' and z' filters. These data are used to search for foreground galaxies which are grav…
A search for the first massive galaxy clusters
Chris J. Willott, David Crampton, John B. Hutchings +5
We have obtained deep, multi-band imaging observations around three of the most distant known quasars at redshifts z>6. Standard accretion theory predicts that the supermassive bla…
Probing the Kinematics of the Narrow-Line Region in Seyfert Galaxies with Slitless Spectroscopy: Observational Results
J. R. Ruiz, D. M. Crenshaw, S. B. Kraemer +5
We present slitless spectra of 10 Seyfert galaxies observed with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. The spectra cover the [OIII] 4959, 5007 emi…
Quasars and the Big Blue Bump
Zhaohui Shang, Michael S. Brotherton, Richard F. Green +10
We investigate the ultraviolet-to-optical spectral energy distributions (SEDs) of 17 active galactic nuclei (AGNs) using quasi-simultaneous spectrophotometry spanning 900-9000 Angs…
Intrinsic Absorption in the Spectrum of Mrk 279: Simultaneous Chandra, FUSE, and STIS Observations
Jennifer E. Scott, Gerard A. Kriss, Julia C. Lee +12
We present a study of the intrinsic X-ray and far-ultraviolet absorption in the Seyfert 1.5 galaxy Markarian 279 using simultaneous observations from the Chandra X-ray Observatory,…
A Revised Ephemeris and FUSE Observations of the Supersoft X-ray Source CAL 83
P. C. Schmidtke, A. P. Cowley, J. B. Hutchings +2
A new ephemeris has been determined for the supersoft X-ray binary CAL 83 using MACHO photometry. With an improved orbital period of 1.047568 days, it is now possible to phase toge…
A Hubble Space Telescope Survey of Extended [OIII]5007A Emission in a Far-Infrared Selected Sample of Seyfert Galaxies: Results
H. R. Schmitt, J. L. Donley, R. R. J. Antonucci +3
We present the results of a Hubble Space Telescope (HST) survey of extended [OIII] emission in a sample of 60 nearby Seyfert galaxies (22 Seyfert 1's and 38 Seyfert 2's), selected…
A Hubble Space Telescope Survey of Extended [OIII]5007A Emission in a Far-Infrared Selected Sample of Seyfert Galaxies: Observations
H. R. Schmitt, J. L. Donley, R. R. J. Antonucci +2
We present a Hubble Space Telescope (HST) survey of extended [OIII] emission for a sample of 60 Seyfert galaxies (22 Seyfert 1's and 38 Seyfert 2's), selected based on their far in…
Host galaxies of 2MASS-selected QSOs to redshift 0.3
J. B. Hutchings, N. Maddox, R. M. Cutri +1
We present and discuss optical imaging of 76 AGN which represent the 2MASS-selected sample for z<0.3, from a full list of 243. They are found to have dust-obscured nuclei, residing…
Constraints on the Ionization Balance of Hot-Star Winds from FUSE Observations of O Stars in the Large Magellanic Cloud
D. Massa, A. W. Fullerton, G. Sonneborn +1
We use a Sobolev with Exact Integration model to analyze the winds lines of 25 LMC O stars. The data include FUSE profiles of C III, N III, S IV, P V, S VI, and O VI and IUE or HST…
Host galaxies of z ~ 4.7 QSOs
J. B. Hutchings
2 micron broad- and narrow-band imaging with the Gemini-N telescope of five z~4.7 QSOs, has resolved both the host galaxies and [O II] emission-line gas. The resolved fluxes of the…
An Atlas of Galactic Spectra Observed with the Far Ultraviolet Spectroscopic Explorer
A. Pellerin, A. W. Fullerton, C. Robert +6
An atlas of far-ultraviolet spectra of 45 Galactic OB stars observed with the Far Ultraviolet Spectroscopic Explorer is presented. The atlas covers the wavelength region between 91…
Faint star counts in the near-infrared
J. B. Hutchings, P. B. Stetson, A. Robin +1
We discuss near-infrared star counts at the Galactic pole with a view to guiding the NGST and ground-based NIR cameras. Star counts from deep K-band images from the CFHT are presen…
Galaxy morphology in the rich cluster Abell 2390
J. B. Hutchings, A. Saintonge, D. Schade +1
We have analysed images of the field of A2390 obtained with the CFHT and HST. The analysis fits models to bulge and disk components to several hundred galaxies, with about equal sa…
The Importance of Shocks in the Ionization of the Narrow Line Region of Seyferts
H. R. Schmitt, A. L. Kinney, J. B. Hutchings +2
We discuss the viability of shocks as the principal source of ionization for the Narrow Line Region of Seyfert galaxies. We present the preliminary results of [OIII]5007A and radio…
Kinematics of the Narrow-Line Region in the Seyfert 2 Galaxy Mrk 3
Jose R. Ruiz, D. M. Crenshaw, S. B. Kraemer +5
We present measurements of radial velocities for the narrow-line region gas (NLR) in the Seyfert 2 galaxy Mrk 3 out to ~1 kpc from the nucleus. The observations consist of two data…
Resolving the Structure of Ionized Helium in the Intergalactic Medium with the Far Ultraviolet Spectroscopic Explorer
G. A. Kriss, J. M. Shull, W. Oegerle +16
The neutral hydrogen and the ionized helium absorption in the spectra of quasars are unique probes of structure in the early universe. We present Far-Ultraviolet Spectroscopic Expl…