2007A&A...464..921S

Query : 2007A&A...464..921S

2007A&A...464..921S - Astronomy and Astrophysics, volume 464, 921-925 (2007/3-4)

An f(R) gravitation for galactic environments.

SOBOUTI Y.

Abstract (from CDS):

We propose an action-based f(R) modification of Einstein's gravity that admits a modified Schwarzschild-deSitter metric. In the weak field limit this amounts to adding a small logarithmic correction to the Newtonian potential. A test star moving in such a spacetime acquires a constant asymptotic speed at large distances. This speed, calibrated empirically, is proportional to the fourth root of the mass of the central body in compliance with the Tully-Fisher relation. A variance of MOND's gravity emerges as an inevitable consequence of the proposed formalism. It has also been shown (Mendoza et al., 2006, astroph/0610390) that a) the gravitational waves in this spacetime propagate with the speed of light in vacuum and b) there is a lensing effect added to what one finds in the classic GR.

Abstract Copyright: ∼

Journal keyword(s): cosmology: theory - cosmology: dark matter - gravitation - galaxies: photometry

Errata: erratum vol.472, p. 833 (2007)

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 UGC 128 LSB 00 13 50.90 +35 59 39.0   16.5       ~ 100 1
2 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
3 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1502 2
4 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5838 1
5 NGC 801 AGN 02 03 44.7926518608 +38 15 31.615649064   14.23 13.47     ~ 177 0
6 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1788 1
7 NGC 2998 LIN 09 48 43.6305155160 +44 04 53.217027660   13.3       ~ 216 0
8 NGC 3726 GiG 11 33 21.1367545656 +47 01 45.280222428   11.11   10.02   ~ 354 0
9 NGC 3769 GiP 11 37 44.0727836208 +47 53 34.782808956   11.7       ~ 183 0
10 UGC 6667 GiC 11 42 26.309 +51 35 52.82   14.8       ~ 120 0
11 UGC 6818 AG? 11 50 46.9776888960 +45 48 26.384111676   14.6       ~ 82 0
12 UGC 6917 GiG 11 56 28.76784 +50 25 42.0132   14.0       ~ 137 0
13 UGC 6923 GiC 11 56 49.526 +53 09 37.21   13.90   12.96   ~ 148 0
14 UGC 6930 EmG 11 57 17.3777198280 +49 17 00.669514488   14.2       ~ 129 0
15 M 109 GiG 11 57 35.9631479640 +53 22 29.006082336   10.94   9.57   ~ 457 0
16 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 423 1
17 UGC 6983 GiC 11 59 08.734 +52 42 28.03   14.5       ~ 173 0
18 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2165 1
19 NGC 4088 GiP 12 05 34.2230093952 +50 32 21.064017876   11.2       ~ 407 1
20 NGC 4100 GiG 12 06 08.602 +49 34 56.32   11.7       ~ 252 0
21 NGC 4138 Sy2 12 09 29.8011417048 +43 41 06.864140004 12.46 12.29 11.32 10.82   ~ 410 1
22 NGC 4157 GiP 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 353 2
23 NGC 4183 GiG 12 13 16.860 +43 41 53.77   13.5       ~ 202 0
24 NGC 4217 GiG 12 15 50.900 +47 05 30.44   12.4       ~ 300 2
25 NGC 5390 LIN 13 55 39.9385716624 +40 27 42.380606592   12.81 11.93 10.04   ~ 350 1
26 NGC 5533 Sy2 14 16 07.7507477232 +35 20 37.879981584   13.0       ~ 175 1
27 NGC 5585 GiG 14 19 48.204 +56 43 44.58   11.73 11.216 11.12 10.123 ~ 430 0
28 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 767 1
29 NGC 6399 G 17 31 50.2984260840 +59 36 55.746235728   14.8       ~ 27 0
30 NGC 6503 LIN 17 49 26.4207792072 +70 08 39.604132176 11.56 10.95 10.28 9.92   ~ 520 1
31 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1106 2

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