2015ApJ...805..144K


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.19CET19:30:16

2015ApJ...805..144K - Astrophys. J., 805, 144 (2015/June-1)

Peculiar velocities of galaxies in the Leo spur.

KARACHENTSEV I.D., TULLY R.B., MAKAROVA L.N., MAKAROV D.I. and RIZZI L.

Abstract (from CDS):

The Hubble Space Telescope Advanced Camera for Surveys has been used to determine accurate distances for the spiral galaxy NGC 2683 and 12 other galaxies in a zone of the ''local velocity anomaly'' from luminosity measurements of the brightest red giant branch stars. These galaxies lie in the Leo Spur, the nearest filament beyond our Local Sheet. The new accurate distance measurements confirm that galaxies along the Leo Spur are more distant than expected from uniform cosmic expansion, and hence have large and peculiar velocities toward us. The motions are generally explained by a previously published model that posits that the Local Sheet is descending at 259 km/s toward the south supergalactic pole due to expansion of the Local Void and is being attracted toward the Virgo Cluster at 185 km/s. With the standard ΛCDM cosmology, an empty void expands at 16 km/s/Mpc, so a motion of 259 km/s requires the Local Void to be impressively large and empty. Small residuals from the published model can be attributed to an upward push toward the north supergalactic pole by the expansion of the Gemini-Leo Void below the Leo Spur. The Leo Spur is sparsely populated, but among its constituents there are two associations that contain only dwarf galaxies.

Abstract Copyright:

Journal keyword(s): dark matter - galaxies: distances and redshifts - galaxies: dwarf - large-scale structure of universe

Simbad objects: 32

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Number of rows : 32

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 UGC 3600 G 06 55 40.00 +39 05 42.8   18       ~ 31 0
2 UGC 3698 G 07 09 18.75 +44 22 48.2   17       ~ 32 0
3 NGC 2337 G 07 10 13.6369267282 +44 27 26.738269783   13.1       ~ 68 0
4 UGC 3775 G 07 15 52.60 +12 06 53.9   17       ~ 13 0
5 UGC 3817 G 07 22 44.48 +45 06 30.7   17       ~ 37 0
6 UGC 3860 G 07 28 17.724 +40 46 11.36   15.50       ~ 129 0
7 LEDA 5060050 G 07 36 10.3 +09 59 11           ~ 15 0
8 UGC 3966 G 07 41 25.777 +40 06 46.05   16.0       ~ 96 0
9 UGC 3974 G 07 41 56.3061361330 +16 48 07.439323443   15.4       ~ 197 0
10 [KK98a] 073940.2+164047 G 07 42 31.2 +16 33 40   15.6       ~ 42 0
11 LEDA 5060076 G 07 50 21.7 +07 47 40           ~ 15 0
12 UGC 4115 G 07 57 01.027 +14 23 47.66   16.0       ~ 120 0
13 NGC 2541 GiG 08 14 40.1104536348 +49 03 42.058472450 12.03 12.26 11.80     ~ 273 1
14 UGC 4426 G 08 28 28.560 +41 51 27.13   18       ~ 125 0
15 LEDA 4087020 G 08 51 12.114 +27 52 48.15           ~ 17 0
16 NGC 2683 AGN 08 52 41.345 +33 25 18.48 11.57 10.68 9.79 9.38   ~ 374 1
17 LEDA 166095 G 08 52 50.8 +33 47 52   16.8       ~ 19 0
18 [KK98a] 70 G 08 55 22.0 +33 33 33   17.7       ~ 11 0
19 NGC 2841 LIN 09 22 02.655 +50 58 35.32 10.43 10.09 9.22     ~ 969 1
20 NGC 2905 H2G 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 970 3
21 UGC 5209 LSB 09 45 04.196 +32 14 16.03   19       ~ 52 0
22 UGC 5288 PaG 09 51 17.241 +07 49 32.05 15.07 14.65 14.18 13.99   ~ 74 0
23 UGC 5456 G 10 07 20.182 +10 21 40.16   13.78   13.24   ~ 93 0
24 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 802 1
25 LEDA 1824266 G 10 31 55.798 +28 01 33.73           ~ 18 0
26 NAME Leo Cluster ClG 11 30.0 +15 00           ~ 46 0
27 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5695 0
28 NAME LOCAL SUPERCL SCG 12 31 +12.4           ~ 443 0
29 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4129 2
30 NAME Local Void vid 18 38 +18.0           ~ 148 0
31 NAME Local Group GrG ~ ~           ~ 6752 0
32 NAME Leo Spur reg ~ ~           ~ 26 0

    Equat.    Gal    SGal    Ecl

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2020.01.19-19:30:16

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