Light and Motion in the Local Volume

Abstract

Using high-quality data on 149 galaxies within 10 megaparsecs (Mpc), I find no correlation between luminosity and peculiar velocity at all. There is no unequivocal sign on scales of 1-2 Mpc of the expected gravitational effect of the brightest galaxies, in particular infall toward groups; or of infall toward the Supergalactic Plane on any scale. Either dark matter is not distributed in the same way as luminous matter in this region, or peculiar velocities are not due to fluctuations in mass. The sensitivity of peculiar velocity studies to the background model is highlighted.

47 pages, 12 figures, several long tables. Accepted by the Astrophysical Journal

References in corpus (67)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
• A 4% Geometric Distance to the Galaxy NGC4258 from Orbital Motions in a Nuclear Gas Disk
• Ten eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and SMC distance
• Distances to Nearby Galaxies in Sculptor
• Deviations from the Local Hubble Flow. I. The Tip of the Red Giant Branch as a Distance Indicator
• Observing the dark matter density profile of isolated galaxies
• The Cepheid Distance to NGC 5236 (M 83) with the VLT
• The distance to the giant elliptical galaxy NGC 5128
• Constrained Simulations of the Real Universe: the Local Supercluster
• The Draco and Ursa Minor dwarf spheroidals. A comparative study
• The very local Hubble flow
• Local galaxy flows within 5 Mpc
• SBF Distances to Dwarf Elliptical Galaxies in the Sculptor Group
• Galaxy Flow in the Canes Venatici I Cloud
• WFPC2 Observations of Leo A: A Predominantly Young Galaxy within the Local Group
• Variable Stars in Leo A: RR Lyraes, Short-period Cepheids, and Implications on Stellar Content
• Deep HST Imaging of IC 1613. I. Variable Stars and Distance
• Determining the Location of the Tip of the Red Giant Branch in Old Stellar Populations: M33, Andromeda I & II
• The Resolved Stellar Populations in NGC 1705
• Detection of the Red Giant Branch Stars in M82 Using the Hubble Space Telescope
• Star Formation and the ISM in Four Dwarf Irregular Galaxies
• A WFPC2 Study of the Resolved Stellar Population of the Pegasus Dwarf Irregular Galaxy (DDO 216)
• WFPC2 Observations of the Carina Dwarf Spheroidal Galaxy
• The RR Lyrae Distance to the Draco Dwarf Spheroidal Galaxy
• Stellar Populations at the Center of IC 1613
• The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda VI
• The Dwarf Spheroidal Companions to M31: WFPC2 Observations of Andromeda II
• The stellar content of the Local Group dwarf galaxy Phoenix
• Deep HST Imaging of Sextans A. II. Cepheids and Distance
• The Stellar Population and Star Clusters in the Unusual Local Group Galaxy IC 10
• RR Lyrae and short-period variable stars in the dwarf irregular galaxy NGC 6822
• Cepheid and Tip of the Red Giant Branch Distances To the Dwarf Irregular Galaxy IC10
• RR Lyrae stars in four globular clusters in the Fornax dwarf galaxy
• Cepheids and Long Period Variables in NGC 4395
• Tip of the Red Giant Branch Distances to NGC 4214, UGC 685, and UGC 5456
• Radial Velocity of the Phoenix Dwarf Galaxy: Linking Gas and Hi Gas
• DDO 187: Do dwarf galaxies have extended halos?
• The Outer Regions of the Nearby Sc Galaxies NGC 2403 and M33: Evidence for an Intermediate Age Population at Large Radii
• Determination of the Distance to M33 Based on Single Epoch I-band HST Observations of Cepheids
• The Star Formation History of LGS 3
• The Stellar Content and Distance of UGC 4483
• The Extragalactic Distance Scale Key Project VIII. The Discovery of Cepheids and a New Distance to NGC 3621 Using the Hubble Space Telescope
• Stellar Populations and the Local Group Membership of the Dwarf Galaxy DDO 210
• The spatial and age distribution of stellar populations in DDO 190
• The Dwarf Irregular/Wolf-Rayet Galaxy NGC4214: I. A New Distance, Stellar Content, and Global Parameters
• The Dwarf Spheroidal Companions to M31: Variable Stars in Andromeda II
• The Recent Evolution of the Dwarf Starburst Galaxy NGC 625 from Hubble Space Telescope Imaging
• A new galaxy near the Local Group in Draco
• An Optical Velocity for the Phoenix Dwarf Galaxy
• The Extinction and Distance of Maffei 1
• Observation of the Halo of NGC 3077 Near the "Garland" Region Using the Hubble Space Telescope
• Comparison of the ENEAR Peculiar Velocities with the PSCz Gravity Field
• HST observations of the cometary blue compact dwarf galaxy UGC 4483: a relatively young galaxy?
• The Stellar Content of NGC 6789, A Blue Compact Dwarf Galaxy in the Local Void
• Tip of the Red Giant Branch Distance for the Sculptor Group Dwarf ESO 540-032
• On the Cepheid variables of nearby galaxies III. NGC 3109
• The Star Formation Histories of Four Fields Spanning the Minor Axis of NGC 6822
• Cluster versus POTENT Density and Velocity Fields: Cluster Biasing and Omega
• A dwarf irregular galaxy at the edge of the Local Group: Stellar populations and distance of IC 5152
• A Compact Population of Red Giants in the Blue Compact Dwarf Galaxy UGCA 290
• Stellar Populations of the Dwarf Galaxy UKS 2323--326 in the Sculptor Group
• The Optical Velocity of the Antlia Dwarf Galaxy
• The Kinematic State of the Local Volume
• Predicting the peculiar velocities of nearby PSC-z galaxies using the Least Action Principle
• Radial Velocities of Dwarf Spheroidal Galaxies in the M81 Group

Cited by in corpus (9)

• Cosmic clocks, cosmic variance and cosmic averages
• The Hubble flow around the Local Group
• Lopsided galaxies: the case of NGC 891
• Non-Friedmann cosmology for the Local Universe, significance of the universal Hubble constant and short-distance indicators of dark energy
• Constrained simulations of the local universe: I. Mass and motion in the Local Volume
• Astrophysics in 2005
• Investigation of the New Local Group Galaxy VV 124
• The kinematical center and mass profile of the Local Group
• You Can't Get There From Here: Hubble Relaxation in the Local Volume