SIMBAD references

2020A&A...635A.135K - Astronomy and Astrophysics, volume 635A, 135-135 (2020/3-1)

Structure and kinematics of the Virgo cluster of galaxies.


Abstract (from CDS):

Aims. This work considers the Virgo cluster of galaxies, focusing on its structure, kinematics, and morphological landscape. Our principal aim is to estimate the virial mass of the cluster. For this purpose, we present a sample of 1537 galaxies with radial velocities VLG<2600km/s situated within a region of ΔSGL=30° and ΔSGB=20° around M 87. About half of the galaxies have distance estimates.
Methods. We selected 398 galaxies with distances in a (17±5)Mpc range. Based on their 1D and 2D number-density profiles and their radial velocity dispersions, we made an estimate for the virial mass of the Virgo cluster.
Results. We identify the infall of galaxies towards the Virgo cluster core along the Virgo Southern Extension filament. From a 1D profile of the cluster, we obtain the virial mass estimate of (6.3±0.9)x1014M, which is in tight agreement with its mass estimate via the external infall pattern of galaxies.
Conclusions. We conclude that the Virgo cluster outskirts between the virial radius and the zero-velocity radius do not contain significant amounts of dark matter beyond the virial radius.

Abstract Copyright: © ESO 2020

Journal keyword(s): galaxies: clusters: individual: Virgo

VizieR on-line data: <Available at CDS (J/A+A/635/A135): lscii.dat>

Simbad objects: 1541

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2020A&A...635A.135K and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact