1998ApJ...508..132D

Query : 1998ApJ...508..132D

1998ApJ...508..132D - Astrophys. J., 508, 132-140 (1998/November-3)

Testing modified newtonian dynamics with low surface brightness galaxies: rotation curve fits.

DE BLOK W.J.G. and McGAUGH S.S.

Abstract (from CDS):

We present modified Newtonian dynamics (MOND) fits to 15 rotation curves of low surface brightness (LSB) galaxies. Good fits are readily found, although for a few galaxies minor adjustments to the inclination are needed. Reasonable values for the stellar mass-to-light ratios are found, as well as an approximately constant value for the total (gas and stars) mass-to-light ratio. We show that the LSB galaxies investigated here lie on the one, unique Tully-Fisher relation, as predicted by MOND. The scatter on the Tully-Fisher relation can be completely explained by the observed scatter in the total mass-to-light ratio. We address the question of whether MOND can fit any arbitrary rotation curve by constructing a plausible fake model galaxy. While MOND is unable to fit this hypothetical galaxy, a normal dark-halo fit is readily found, showing that dark matter fits are much less selective in producing fits. The good fits to rotation curves of LSB galaxies support MOND, especially because these are galaxies with large mass discrepancies deep in the MOND regime.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Dark Matter - Galaxies: Fundamental Parameters - Galaxies: Halos - Galaxies: Kinematics and Dynamics - Galaxies: Spiral - Gravitation

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MCG+06-01-019 LSB 00 13 50.90 +35 59 39.0   16.5       ~ 105 1
2 MCG+04-05-005 LSB 01 45 32.251 +25 31 17.28   17       ~ 92 0
3 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
4 LEDA 86666 LSB 08 53 03.83 +18 26 09.4           ~ 81 0
5 LSB F563-1 LSB 08 55 01.4 +19 45 06           ~ 73 0
6 UGC 5005 LSB 09 24 29.39972 +22 16 29.0213   18       ~ 81 0
7 LEDA 86670 LSB 09 37 36.6 +21 46 15           ~ 53 0
8 LEDA 86619 G 10 26 06.360 +22 26 00.96           ~ 75 0
9 LSB F568-3 LSB 10 26 59 +22 13.6           ~ 81 0
10 UGC 5750 AG? 10 35 45.12 +20 59 24.9   17       ~ 81 0
11 LEDA 86672 LSB 10 45 02.064 +22 03 15.54           ~ 91 0
12 UGC 5999 LSB 10 52 58.652 +07 37 11.27   18       ~ 57 0
13 LEDA 86674 LSB 11 26 19.08 +18 50 09.3           ~ 57 0
14 LSB F571-8 LSB 11 33 54.3 +19 21 18           ~ 50 0
15 CAIRNS J113731.30+183536.3 LSB 11 37 31.30 +18 35 36.3           ~ 9 0
16 LSB F574-1 LSB 12 38 13.3 +22 17 59           ~ 65 0
17 LSB F583-4 LSB 15 52 12 +18 47.1           ~ 60 0
18 LEDA 86657 LSB 15 57 27.483 +20 39 59.12           ~ 104 0

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