2009A&A...496..659T

Query : 2009A&A...496..659T

2009A&A...496..659T - Astronomy and Astrophysics, volume 496, 659-668 (2009/3-4)

MOND and the dark baryons.

TIRET O. and COMBES F.

Abstract (from CDS):

We consider for the first time the implications for the modified gravity MOND model of galaxies, of the presence of dark baryons, in the form of cold molecular gas in galaxy discs. We show that MOND models of rotation curves are still valid and universal, but the critical acceleration a₀ separating the Newtonian and MONDian regimes has a lower value. We quantify this modification as a function of the scale factor c between the total gas of the galaxy and the measured atomic gas. The main analysis concerns 43 resolved rotation curves and allows us to find the best pair (a₀=0.96x10^–10m/s2, c=3), which is also compatible with the one obtained from a second method minimizing the scatter in the baryonic Tully-Fisher relation.

Abstract Copyright: ∼

Journal keyword(s): galaxies: general - galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure - cosmology: dark matter

Simbad objects: 43

Full paper

View the references in ADS

Number of rows : 43

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NGC 24	GiG	00 09 56.542	-24 57 47.27	12.12	12.20	11.58	11.46	11.5	~	231	1
2	UGC 128	LSB	00 13 50.93	+35 59 36.6		16.5				~	93	1
3	NGC 45	LSB	00 14 04.0072128696	-23 10 55.132646808	11.92	11.21	10.73	10.58	10.4	~	244	1
4	NGC 55	GiG	00 14 53.602	-39 11 47.86	8.54	8.58	7.87	7.84		~	752	2
5	NGC 247	LSB	00 47 08.554	-20 45 37.44	10.11	9.61	9.10	8.87		~	417	2
6	NGC 253	SyG	00 47 33.134	-25 17 19.68		8.03		6.94	8.1	~	3209	2
7	NGC 300	GiG	00 54 53.4465638304	-37 41 03.168402396	8.83	8.69	8.13	7.46		~	1445	2
8	M 33	GiG	01 33 50.8965749232	+30 39 36.630403128	6.17	6.27	5.72			~	5637	1
9	NGC 801	AGN	02 03 44.7926518608	+38 15 31.615649064		14.23	13.47			~	171	0
10	NGC 925	H2G	02 27 16.913	+33 34 43.97		10.69	10.12	9.55		~	753	1
11	NGC 1003	GiG	02 39 16.893	+40 52 20.25		12.1		10.83		~	178	0
12	UGC 2259	GiP	02 47 55.4194406880	+37 32 18.528735876		14.3		12.8		~	123	0
13	UGC 2885	G	03 53 02.4589142328	+35 35 22.174136556		14.4				~	138	0
14	NGC 1560	GiG	04 32 49.087	+71 52 59.20		12.1				~	245	0
15	NGC 2366	H2G	07 28 51.85	+69 12 31.1	12.25	11.86	11.39	11.33		~	741	0
16	NGC 2403	AGN	07 36 51.3381434280	+65 36 09.650825640	9.31	8.84	8.38	8.19		~	1729	1
17	NGC 2841	LIN	09 22 02.6778711696	+50 58 35.737082868	10.43	10.09	9.22			~	1042	1
18	NGC 2915	G	09 26 11.532	-76 37 34.75	13.13	12.93	12.68	11.90	12.8	~	335	2
19	NGC 2905	H2G	09 32 10.111	+21 30 02.99	10.44	9.75	9.07	8.68		~	1078	3
20	NGC 2998	LIN	09 48 43.6305155160	+44 04 53.217027660		13.3				~	205	0
21	NGC 3109	G	10 03 06.877	-26 09 34.46	11.10	10.42	10.04	9.91		~	745	2
22	NGC 3198	EmG	10 19 54.990	+45 32 58.88	10.83	10.87	10.33			~	876	1
23	IC 2574	G	10 28 23.6148831408	+68 24 43.440012756	11.70	11.07	10.87	10.74		~	642	1
24	NGC 3726	GiG	11 33 21.1367545656	+47 01 45.280222428		11.11		10.02		~	343	0
25	NGC 4203	LIN	12 15 05.0549203560	+33 11 50.383965120		12.98	11.99			~	479	2
26	NGC 4242	GiG	12 17 30.1835103480	+45 37 09.508940220		11.37	10.83			~	254	1
27	M 106	Sy2	12 18 57.620	+47 18 13.39		9.14	8.41	8.11		~	2282	3
28	NGC 4395	Sy2	12 25 48.8633109888	+33 32 48.700168152	10.84	10.54	10.11	9.98		~	1115	1
29	NGC 4725	Sy2	12 50 26.5716367992	+25 30 02.733090588		13.45	12.44			~	667	2
30	UGC 8024	GiC	12 54 05.248	+27 08 58.67	14.37	14.23	13.95	13.84		~	574	1
31	NGC 5033	Sy1	13 13 27.535	+36 35 37.14		11.01	12.03	9.73		~	842	3
32	UGC 8320	G	13 14 27.997	+45 55 11.14	13.63	13.26	13.02	12.81		~	267	0
33	M 63	LIN	13 15 49.2741893928	+42 01 45.728076108		9.34	8.59	8.35		~	1174	2
34	UGC 8333	GiC	13 15 53.778	+25 26 10.13		17				~	111	0
35	NGC 5390	LIN	13 55 39.9385716624	+40 27 42.380606592		12.81	11.93	10.04		~	337	1
36	NGC 5533	Sy2	14 16 07.7507477232	+35 20 37.879981584		13.0				~	164	1
37	NGC 5585	GiG	14 19 48.204	+56 43 44.58		11.73	11.216	11.12	10.123	~	411	0
38	NGC 5906	GiG	15 15 53.687	+56 19 43.86		11.4				~	740	1
39	NGC 6503	LIN	17 49 26.4207792072	+70 08 39.604132176	11.56	10.95	10.28	9.92		~	498	1
40	NGC 6674	G	18 38 33.889	+25 22 30.39		13.7				~	105	0
41	NGC 6946	H2G	20 34 52.332	+60 09 13.24		10.5				~	2438	2
42	NGC 7331	LIN	22 37 04.0506038088	+34 24 56.800076508	10.65	10.35	9.48			~	1194	2
43	NGC 7793	GiG	23 57 49.7540045856	-32 35 27.701550744	10.26	9.74	9.28	9.06	9.7	~	1063	2

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