NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-27 T00:31:56 PDT
Help | Comment | NED Home

For refcode 1993A&A...276....1J:
Retrieve 61 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
1993A&A...276....1J The Local Group motion towards Virgo and the microwave background H. Jerjen and G.A. Tammann Astronomisches Institut der Universitat Basel, Venusstrasse 7, CH-4102 Binningen, Switzerland European Southern Observatory, Karl-Schwarzschild-Strasse 2, W-8049 Garching bei Munchen, Germany Received March 10, 1992; accepted March 28, 1993 Abstract. The peculiar motion of the Local Group is determined from 15 clusters whose relative distances are known with minimum bias. The resulting local motion is 745 +/- 106 kms^-1^ towards l = 273^deg^, b = 3^deg^. This 7{sigma} signal is in perfect statistical agreement with the motion inferred from the dipole of the cosmic microwave background. The median distance of 6400 km s^-1^ of the 15 clusters sets an upper limit to the comoving volume. - The three-dimensional peculiar motions of the clusters become 587 km s^-1^, if allowance is made for a 5 percent error of the cluster distances. The value compares well with the 489 km s^-1^ motion of the Virgo complex with respect to the cosmic microwave background. - The data imply a local slow-down of the expansion field due to the Virgo cluster of v_VC_ = 239 +/- 40 km s^-1^. An almost identical value, i.e. v_VC_ = 233 +/- 44 km s^-1^, is independently determined using the relative distances of the Virgo, UMa, and Fornax clusters and of eight nearby supernovae of type Ia. - These results do not require the adoption of any zero-point of the extragalactic distance scale. Key words: cosmic microwave background - galaxies, distances and redshifts - Local group - galaxies: clustering
Retrieve 61 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home