STScI Preprint #1227

Near-IR Imaging of Gigahertz Peaked Spectrum, Compact Steep Spectrum, and Large Scale FR II Radio Galaxies

In this paper we present data from our J, H, and K imaging program of powerful radio sources. The sample consists of radio galaxies, classified as either compact (< 1kpc), intermediate sized (1-20kpc), or large scale classical double (> 20kpc) radio sources. Source images, photometry results, radial profiles, and profile fits are presented. Source decomposition of total flux into PSF and extended contributions indicate all sources are nucleated to roughly the same level at J, H, and K bands, arguing against the notion that the suspected higher nuclear absorption in the most compact class would render those sources relatively more nucleated at the longer wavelengths. No significant differences in near-IR host galaxy properties have been found. In a companion paper we discuss color-color properties, comparisons with predictions made by a stellar synthesis code, and near-IR broadband spectral properties.

Status:

Appeared in: The Astrophysical Journal, 503:138-155, 1998

Affiliations:

¹)Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
²)also at Kapteyn Astronomical Institute, P.O. Box 800, NL-9700 AV Groningen, The Netherlands.
³)Visiting observers at the Kitt Peak National Observatory of the National Optical Astronomy Observatories, operated by AURA under contract with the National Science Foundation.
⁴)Leiden Observatory, P.O. Box 9513, NL-2300 RA, Leiden, The Netherlands
⁵)CASU-U Colorado, Campus Box 389, Boulder, CO 80309
⁶)University of Florida, department of Astronomy, P.O. Box 112055, Gainesville, FL 32611