Fanaroff–Riley dichotomy of radio galaxies and the Malmquist bias
نویسندگان
چکیده
منابع مشابه
The Triggering and Bias of Radio Galaxies
We present new results on the clustering and three-dimensional distribution of radio galaxies from the Texas-Oxford NVSS Structure (TONS) survey. The TONS survey was constructed to look at the distribution of radio galaxies in a region of moderate (0 ∼ z < ∼ 0.5) redshifts by matching NVSS sources with objects in APM catalogues to obtain a sample of optically bright (R ≤ 19.5), radio faint (1.4...
متن کاملAbout the Malmquist bias in the determination of H0 and of distances of galaxies
We provide the mathematical framework which elucidates the way of using a Tully-Fisher (TF) like relation in the determination of the Hubble constant H0, as well as for distances of galaxies. The first step toward the comprehension of this problem is to define a statistical model which accounts for the (linear) correlation between the absolute magnitude M and the line width distance estimator p...
متن کاملA dichotomy in the orientation of dust and radio jets in nearby low - power radio galaxies ⋆
We examine the properties of central dust in nearby quiescent and active early-type galaxies. The active galaxies are low-power radio galaxies with Fanaroff & Riley Type I or I/II radio jets. We focus on (a) the comparison of the dust distributions in the active and quiescent galaxy samples and (b) the relation between the radio jet and dust orientations. Our main observational conclusions are:...
متن کاملMalmquist Bias and the Distance to the Virgo Cluster Anthony
This paper investigates the impact of Malmquist bias on the distance to the Virgo cluster determined by the H0 Key Project using M100, and consequently on the derived value of H0. Malmquist bias is a volume-induced statistical effect which causes the most probable distance to be different from the raw distance measured. Consideration of the bias in the distance to the Virgo cluster raises this ...
متن کاملFIRST quasars and the radio dichotomy
Much evidence has been presented in favor of and against the existence of two distinct populations of quasars, radio-loud and radio-quiet. The SDSS differs from earlier optically selected quasar surveys in the large number of quasars and the targeting of FIRST radio source counterparts as quasar candidates. This allows a qualitatively different approach of constructing a series of samples at di...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2014
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/stu986