Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Display Documents



ID: 5554.0, MPI für Astrophysik / Cosmology
Arguments for a Hubble constant near H-0=55
Authors:Arp, H.
Language:English
Date of Publication (YYYY-MM-DD):2002-06-01
Title of Journal:The Astrophysical Journal
Journal Abbrev.:Astrophys. J.
Volume:571
Issue / Number:2
Start Page:615
End Page:618
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Recent analyses of Cepheid distances to spiral galaxies have led to the announcement of a Hubble constant of H-0 = 72 +/- 8 km s(-1) Mpc(-1). The new Cepheid distances, however, show that there are numerous redshift distances with large excesses that cannot be due to peculiar velocities. Ignoring these discordant redshifts, if the Hubble constant is calibrated with Cepheid distances of low-redshift spirals, then a value near H-0 = 55 is obtained. Use of independent distance criteria such as Tully-Fisher and group membership verifies this value and leads to three conclusions: ( 1) the peculiar velocities of galaxies in space are characteristically small; (2) Sc companions to normal Sb galaxies tend to be less luminous, with younger stellar populations and small amounts of nonvelocity redshift; and (3) ScI and other purportedly overluminous spiral galaxies have large amounts of intrinsic redshift.
Free Keywords:Cepheids; galaxies : distances and redshifts
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astrophysik
External Affiliations:Max Planck Inst Astrophys, Karl Schwarzschild Str 1,Postfach; 1317, D-85741 Garching, Germany; Max Planck Inst Astrophys, D-85741 Garching, Germany
Identifiers:ISI:000175830800005
ISSN:0004-637X
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.