scholarly journals Clustering of Local Group Distances: Publication Bias or Correlated Measurements? VI. Extending to Virgo Cluster Distances

2019 ◽  
Vol 246 (1) ◽  
pp. 3 ◽  
Author(s):  
Richard de Grijs ◽  
Giuseppe Bono
Keyword(s):  
Publication Bias ◽  
Local Group ◽  
Virgo Cluster

scholarly journals THE NEXT GENERATION VIRGO CLUSTER SURVEY. VII. THE INTRINSIC SHAPES OF LOW-LUMINOSITY GALAXIES IN THE CORE OF THE VIRGO CLUSTER, AND A COMPARISON WITH THE LOCAL GROUP

2016 ◽  
Vol 820 (1) ◽  
pp. 69 ◽  
Author(s):  
Rubén Sánchez-Janssen ◽  
Laura Ferrarese ◽  
Lauren A. MacArthur ◽  
Patrick Côté ◽  
John P. Blakeslee ◽  
...  
Keyword(s):  
Local Group ◽  
Virgo Cluster ◽  
Next Generation ◽  
Cluster Survey ◽  
The Core

scholarly journals Large-Scale Anisotropy at Centimeter Wavelengths

1983 ◽  
Vol 104 ◽  
pp. 143-148
Author(s):  
David T. Wilkinson
Keyword(s):  
Early Universe ◽  
Large Scale ◽  
Local Group ◽  
Virgo Cluster ◽  
Scientific Interest ◽  
Physical Processes ◽  
General Direction ◽  
Systematic Effects ◽  
Better Than

Scientific interest in large-scale anisotropy measurements is now focused on intrinsic effects, which could tell us much about the early Universe. Current experimental precision of better than 10−4 K begins to probe for interesting physical processes. However, at these levels of precision systematic effects and foreground sources present serious difficulties. Some recent results from balloon flights of a maser radiometer (λ 1.2 cm) and a cooled mixer (λ 3 mm) are discussed and interpreted. The dipole effect gives a velocity for the Local Group in the general direction of the Virgo cluster. The Earth's motion is clearly seen. There is no quadrupole detected at a level of ΔT/T ∼ 5 × 10−5.

scholarly journals The Local Supercluster

1978 ◽  
Vol 79 ◽  
pp. 205-213 ◽  
Author(s):  
G. de Vaucouleurs
Keyword(s):  
Small Groups ◽  
Large Scale ◽  
Local Group ◽  
Virgo Cluster ◽  
General Phenomenon ◽  
Quantitative Evidence ◽  
Present Concept ◽  
Local Supercluster ◽  
Density Excess

The first quantitative evidence for a large scale density excess or “metagalactic cloud” including the Local Group was obtained by Holmberg (1937) and confirmed by Reiz (1941). the present concept of the Local Supercluster (LSC) as a flattened aggregate of field galaxies, small groups and larger clouds centered at the Virgo cluster was formulated 25 years ago (de Vaucouleurs 1953) even before large-scale superclustering was recognized as a general phenomenon. See review papers in Vistas in Astronomy (1956), Soviet Astronomy (1960), Science (1970), Publ. Astron. Soc. Pacific (1971), and IAU Symp. No. 63 (Abell 1974).

scholarly journals Two-body problem in presence of cosmological constant

2019 ◽  
Vol 28 (12) ◽  
pp. 1950155
Author(s):  
G. S. Bisnovatyi-Kogan ◽  
M. Merafina
Keyword(s):  
Angular Momentum ◽  
Cosmological Constant ◽  
Body Problem ◽  
Local Group ◽  
Classical Case ◽  
Virgo Cluster ◽  
Body Motion ◽  
Critical Parameters ◽  
Two Body Problem ◽  
Qualitative Picture

We consider the Kepler two-body problem in presence of the cosmological constant [Formula: see text]. Contrary to the classical case, where finite solutions exist for any angular momentum of the system [Formula: see text], in presence of [Formula: see text] finite solutions exist only in the interval [Formula: see text]. The qualitative picture of the two-body motion is described, and critical parameters of the problem are found. Application is made to the relative motion of the Local Group and Virgo cluster.

scholarly journals The Peculiar Velocity of the Local Group in the Direction of the Virgo Cluster

1987 ◽  
Vol 117 ◽  
pp. 115-115
Author(s):  
L. Staveley-Smith ◽  
R. D. Davies
Keyword(s):  
Local Group ◽  
Hubble Constant ◽  
Virgo Cluster ◽  
Density Parameter ◽  
Field Observations ◽  
Peculiar Velocity ◽  
Peculiar Velocities ◽  
Scaling Methods ◽  
Crucial Test ◽  
Local Value

The measurement of the amplitude of the Local Group infall velocity towards the Virgo Cluster is a crucial test for the value of the universal density parameter Ωo and the ratio of the universal Hubble constant to its local value. However, a very large discrepancy exists between total infall velocities derived from peculiar velocity field observations and those derived from “scaling” methods using standard candles in the Virgo and Coma clusters. The former have tended to produce high Virgocentric peculiar velocities (350 to 500 km s−1) whilst the latter give much lower values (-70 to 100 km s−1).

Sign in / Sign up

Export Citation Format

Share Document