Imaging of [CLC][ITAL]z[/ITAL][/CLC] ∼ 2 QSO Host Galaxies with the [ITAL]Hubble Space Telescope[/ITAL]
Open Access
- 1 June 2002
- journal article
- research article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 123 (6) , 2936-2944
- https://doi.org/10.1086/340472
Abstract
We report on deep imaging in two filters with the planetary camera of the Hubble Space Telescope of five QSOs at redshift of ~2, with a range of optical and radio luminosity. The observations included a suite of point-spread function (PSF) observations that were used to construct new PSF models, described elsewhere by Dumont et al. The new PSF models were used to remove the QSO nucleus from the images. We find that the host galaxies have resolved flux of the order of 10% of the QSO nuclei and are generally luminous and blue, indicating active star formation. While most have clearly irregular morphologies, the bulk of the flux can be modeled approximately by an R1/4 law. However, all host galaxies also have an additional approximately exponential luminosity profile beyond a radius of about 08, as also seen in ground-based data with larger telescopes. The QSOs all have a number of nearby faint blue companions that may be young galaxies at the QSO redshift. We discuss implications for evolution of the host galaxies, their spheroidal populations, and central black holes.Keywords
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This publication has 18 references indexed in Scilit:
- A NICMOS imaging study of high-zquasar host galaxiesMonthly Notices of the Royal Astronomical Society, 2001
- The Radio Luminosity–Black Hole Mass Correlation for Quasars from the FIRST Bright Quasar Survey and a “Unification Scheme” for Radio-loud and Radio-quiet QuasarsThe Astrophysical Journal, 2001
- QSO Hosts and Companions at Higher RedshiftsPublished by Springer Nature ,2001
- Software for the Analysis of Emission Line NebulaePublications of the Astronomical Society of the Pacific, 1995
- QSO Host Galaxies at z=2.3The Astronomical Journal, 1995
- Galaxy companions to QSOs at Z = 2.3The Astronomical Journal, 1995
- A revised and updated catalog of quasi-stellar objectsThe Astrophysical Journal Supplement Series, 1993
- Spatially resolved optical images of high-redshift quasi-stellar objectsThe Astrophysical Journal, 1991
- The large, bright QSO survey. II - QSOs in three equatorial fieldsThe Astronomical Journal, 1989
- Quasar candidates from grens platesThe Astronomical Journal, 1985