The R-band Hubble diagram for gigahertz peaked spectrum radio galaxies
نویسندگان
چکیده
منابع مشابه
Gigahertz-Peaked Spectrum Radio Sources
The study of compact AGN which possess convex radio spectra (the gigahertz-peaked spectrum, or GPS sources) has generated a lot of interest over the last four decades, since these objects offer a unique opportunity to probe both the early evolutionary stages of relativistic AGN jets and their immediate nuclear environments. In this article I trace Ken Kellermann’s early investigations of these ...
متن کاملThe host galaxies of Compact Steep Spectrum and Gigahertz-Peaked Spectrum radio sources
I will review some of the developments in studies of the host galaxy properties of Compact Steep Spectrum (CSS) and GigaHertz-Peaked Spectrum (GPS) radio sources. In contrast to previous reviews structured around observational technique, I will discuss the host galaxy properties in terms of morphology, stellar content and warm gas properties and discuss how compact, young radio-loud AGN are key...
متن کاملRadio spectra of Gigahertz Peaked Spectrum radio sources
Awell defined sample of 72 Gigahertz Peaked Spectrum radio sources is compiled, having turnover frequencies in the range of 0.5 – 10 GHz. Using this sample, the canonical GPS radio spectrum is constructed, which is found to have a constant shape, independent of AGN type, redshift or radio luminosity. A possible deficiency of low turnover frequencies at high redshift is found, which may reflect ...
متن کاملDeceleration of relativistic radio components and the morphologies of gigahertz peaked spectrum sources
A relativistic radio component, which moves in a direction close to the sky plane, will increase in flux density when it decelerates. This effect is the basis for the qualitative model for GPS galaxies we present in this paper, which can explain their low-variability convex spectrum, their compact double or compact symmetric morphology, and the lack of GPS quasars at similar redshifts. Componen...
متن کاملThe K band Hubble diagram for brightest cluster galaxies in X-ray clusters
This paper concerns the K band Hubble diagram for the brightest cluster galaxies (BCGs) in a sample of X-ray clusters covering the redshift range 0.05 < z < 0.8. We show that BCGs in clusters of high X-ray luminosity are excellent standard candles: the intrinsic dispersion in the raw K band absolute magnitudes of BCGs in clusters with LX > 2.3 × 10 erg s−1 (in the 0.3 3.5 keV band) is no more t...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1996
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/279.4.1294