2001A&A...368L..17E


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.14CEST14:27:56

2001A&A...368L..17E - Astronomy and Astrophysics, volume 368, L17-20 (2001/3-4)

On the quiescence of the Hubble flow in the vicinity of the Local Group. A study using galaxies with distances from the Cepheid PL-relation.

EKHOLM T., BARYSHEV Y., TEERIKORPI P., HANSKI M.O. and PATUREL G.

Abstract (from CDS):

Cepheid distances of local galaxies (<7Mpc) are used to study the very nearby velocity field, as pioneered by Sandage (1986ApJ...307....1S) who also pointed out its remarkable properties: linearity and quietness. The new data show that the velocity dispersion in the distance range as seen from the barycentre of the Local Group 1-8 Mpc is as low as 38km/s. The local rate of expansion coincides with the global Hubble constant. Down to 1.5Mpc we cannot detect a deviation from the linear Hubble flow. This puts an upper limit for the mass of the Local Group, for a wide class of Friedman models, including those with the cosmological constant.

Abstract Copyright:

Journal keyword(s): cosmology: observations - galaxies: distances and redshifts - galaxies: general - galaxies: kinematics and dynamics - Local Group

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10959 1
2 NGC 300 GiG 00 54 53.4460065856 -37 41 03.182962667 8.83 8.69 8.13 7.46   ~ 1310 2
3 IC 1613 GiC 01 04 54.2 +02 08 00   10.42 10.01 9.77   ~ 1110 2
4 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5150 1
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14883 1
6 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3975 5
7 NAME Sextans B H2G 10 00 00.8201300945 +05 20 09.572530884 12.77 12.25 11.89 11.71   ~ 471 0
8 NGC 3109 G 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 695 2
9 NAME Sex A H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 655 2
10 NGC 3621 AGN 11 18 16.300 -32 48 45.36 10.10 9.44 9.56 8.07 10.1 ~ 490 3
11 IC 4182 BiC 13 05 48.7470958923 +37 36 13.015792630   11.86   11.40   ~ 321 1
12 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33   ~ 1271 4
13 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2554 2
14 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1435 0
15 NAME Local Group GrG ~ ~           ~ 7005 0

    Equat.    Gal    SGal    Ecl

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2020.08.14-14:27:56

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