Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Rauzy S"'
Publikováno v:
Int.J.Mod.Phys. D11 (2002) 581-597
We describe a method for recovering of the substructure, internal dynamics and geometrical shapes of clusters of galaxies. Applying the method to the Virgo cluster, we, first, reveal the substructure of the central 4 arc degree field of the Virgo clu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0107265
Autor:
Hendry, M. A., Rauzy, S.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 324 (2001) 717
We obtain a robust, non-parametric, estimate of the Hubble constant from galaxy linear diameters calibrated using HST Cepheid distances. Our method is independent of the parametric form of the diameter function and the spatial distribution of galaxie
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908343
We define here a standard candle to determine the distance of clusters of galaxies and to investigate their peculiar velocities by using the n^{th} rank galaxy (magnitude m$_n$). We address the question of the universality of the luminosity function
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806162
Autor:
Rauzy, S., Gurzadyan, V. G.
The problem of the relative motion of the substructures of the Local Group of galaxies revealed via S-tree method, as well as of the velocity of the Local Group itself, is considered. The existence of statistically significant bulk flow of the Milky
Externí odkaz:
http://arxiv.org/abs/astro-ph/9803306
Autor:
Gurzadyan, V. G., Rauzy, S.
The problem of reconstruction of the 3D velocities of clusters of galaxies from the redshift distribution of galaxies of the cluster is formulated. Though numerical simulations show the impossibility of direct use of Ambartsumian's formula derived fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/9707198
Autor:
Rauzy, S.
A new technique for calibrating Tully-Fisher like relations by using field galaxies is proposed. Based on a null-correlation approach (NCA), the technique is insensitive to the presence of selection effects on apparent magnitude $m$ and on log line-w
Externí odkaz:
http://arxiv.org/abs/astro-ph/9701184
In a previous paper, we have demonstrated the importance to define a statistical model describing the observed linear correlation between the absolute magnitude $M$ and the log line width distance indicator $p$ of galaxies (the Tully-Fisher relation)
Externí odkaz:
http://arxiv.org/abs/astro-ph/9510020
This paper completes the statistical modeling of the Hubble flow when a Tully-Fisher type relation is used for estimating the absolute magnitude $M\approx a\,p+b$ from a line width distance indicator $p$. Our investigation is performed with the aim o
Externí odkaz:
http://arxiv.org/abs/astro-ph/9510018
In this article we give an account of a method of smoothing spatial inhomogeneous data sets by using wavelet reconstruction on a regular grid in an auxilliary space onto which the original data is mapped. In a previous paper by the present authors, w
Externí odkaz:
http://arxiv.org/abs/astro-ph/9510017
In this paper we derive a Tully Fisher relation from measured I band photometry and H$\alpha$ rotation curves of a large survey of southern sky spiral galaxies, obtained in Persic \& Salucci (1995) by deprojecting and folding the raw H$\alpha$ data o
Externí odkaz:
http://arxiv.org/abs/astro-ph/9508138