2015MNRAS.446.2030Z

Query : 2015MNRAS.446.2030Z

2015MNRAS.446.2030Z - Mon. Not. R. Astron. Soc., 446, 2030-2037 (2015/January-2)

The connection between the UV colour of early-type galaxies and the stellar initial mass function revisited.

ZARITSKY D., GIL DE PAZ A. and BOUQUIN A.Y.K.

Abstract (from CDS):

We extend our initial study of the connection between the UV colour of galaxies and both the inferred stellar mass-to-light ratio, Υ*, and a mass-to-light ratio referenced to Salpeter initial mass function (IMF) models of the same age and metallicity, Υ*/ΥSal, using new UV magnitude measurements for a much larger sample of early-type galaxies, ETGs, with dynamically determined mass-to-light ratios. We confirm the principal empirical finding of our first study, a strong correlation between the GALEX FUV-NUV colour and Υ*. We show that this finding is not the result of spectral distortions limited to a single passband (e.g. metallicity-dependent line-blanketing in the NUV band), or of the analysis methodology used to measure Υ*, or of the inclusion or exclusion of the correction for stellar population effects as accounted for using Υ*/ΥSal. The sense of the correlation is that galaxies with larger Υ*, or larger Υ*/ΥSal, are bluer in the UV. We conjecture that differences in the low-mass end of the stellar IMF are related to the nature of the extreme horizontal branch stars generally responsible for the UV flux in ETGs. If so, then UV colour can be used to identify ETGs with particular IMF properties and to estimate Υ*. We also demonstrate that UV colour can be used to decrease the scatter about the Fundamental Plane and Manifold, and to select peculiar galaxies for follow-up with which to further explore the cause of variations in Υ* and UV colour.

Journal keyword(s): stars: luminosity function, mass function - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/MNRAS/446/2030): table1.dat>

Simbad objects: 192

Full paper

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Number of rows : 192

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	NGC 448	EmG	01 15 16.5193587096	-01 37 34.484096784		13.2				~	100	0
2	NGC 474	GiP	01 20 06.6870520512	+03 24 55.861973100	12.75	12.37	11.51	11.42	10.56	~	354	1
3	NGC 509	GiG	01 23 24.1140214872	+09 26 01.087277424		14.7				~	60	0
4	NGC 516	GiP	01 24 08.0801760720	+09 33 06.397815780		14.3				~	78	0
5	NGC 524	GiP	01 24 47.7429545736	+09 32 20.089023900		11.5				~	462	1
6	NGC 525	AG?	01 24 52.9229678784	+09 42 12.149984916		14.50				~	62	0
7	NGC 661	GiG	01 44 14.5989233928	+28 42 21.162014388		13.0				~	102	0
8	NGC 680	GiP	01 49 47.2923018240	+21 58 15.142526652		13.0				~	144	0
9	NGC 821	AG?	02 08 21.1358498040	+10 59 41.832436704		12.210	11.310	10.739	9.744	~	572	0
10	NGC 936	EmG	02 27 37.462	-01 09 22.61		11.1		9.98	10.7	~	356	0
11	NGC 1023	AG?	02 40 24.0133575864	+39 03 47.663392896	10.91	10.35	9.35	7.83		~	660	2
12	NGC 1222	Sy2	03 08 56.7398731608	-02 57 18.587969280		13.3		13.0	13.2	~	193	0
13	NGC 1266	Sy1	03 16 00.7739640240	-02 25 37.827013584		14		12.46		~	305	1
14	NGC 1289	GiG	03 18 49.7937804216	-01 58 23.745958356		13.8				~	66	0
15	NGC 2549	AG?	08 18 58.3507032336	+57 48 11.022298740		12.1				~	254	0
16	NGC 2577	GiP	08 22 43.4495600280	+22 33 11.142071640		13.8				~	123	0
17	NGC 2592	AG?	08 27 08.0516435904	+25 58 13.122058224		13.6				~	115	0
18	NGC 2594	AG?	08 27 17.1616179576	+25 52 43.686523164		15.0				~	54	0
19	UGC 4551	AG?	08 44 05.9308682352	+49 47 37.870900980	13.87	13.40	12.46			~	96	1
20	NGC 2679	GiP	08 51 32.9418201528	+30 51 55.211530176		14.3				~	74	0
21	NGC 2695	GiG	08 54 27.0744277224	-03 04 00.993904032		13.3				~	111	0
22	NGC 2685	Sy2	08 55 34.7027817000	+58 44 03.876540108		13.68	12.70			~	430	1
23	NGC 2698	GiG	08 55 36.4948914048	-03 11 02.378344776		13.2				~	60	0
24	NGC 2699	GiG	08 55 48.7851438216	-03 07 39.575588736		13.6				~	106	0
25	NGC 2768	SyG	09 11 37.504	+60 02 13.95	11.30	10.84	9.87			~	503	2
26	NGC 2859	AG?	09 24 18.5266762368	+34 30 48.561305832		11.8				~	256	0
27	NGC 2962	GiP	09 40 53.9321546928	+05 09 57.032828496		13.1				~	201	0
28	NGC 2974	Sy2	09 42 33.2918467632	-03 41 57.038311068		12.19		10.77		~	438	0
29	NGC 2950	AG?	09 42 35.1484995048	+58 51 04.584956904		11.8				~	206	0
30	NGC 3032	AGN	09 52 08.1524118072	+29 14 10.364182440		13.87	13.28			~	250	0
31	NGC 3073	GiP	10 00 52.0678224264	+55 37 07.881619152	14.12	14.07	13.40			~	191	2
32	NGC 3098	GiG	10 02 16.6969955520	+24 42 39.887384724		13.00				~	134	0
33	Mrk 25	AGN	10 03 51.9487763664	+59 26 10.665521556		14.96	14.42			~	133	0
34	NGC 3156	GiG	10 12 41.2457368824	+03 07 45.701284764		12.8				~	235	0
35	NGC 3193	GiP	10 18 24.884	+21 53 38.32	12.29	11.83	10.88	12.19		~	289	1
36	NGC 3182	Sy2	10 19 33.0239134272	+58 12 20.586154752		13.0				~	111	0
37	NGC 3230	LSB	10 23 43.9569304632	+12 34 03.913754088		14.9				~	59	0
38	NGC 3245	GiP	10 27 18.3864983136	+28 30 26.621599932		11.6				~	346	0
39	NGC 3248	GiG	10 27 45.4389454896	+22 50 49.805614320		13.9				~	76	0
40	NGC 3301	GiG	10 36 56.0401118904	+21 52 55.516904976		12.2				~	140	0
41	NGC 3377	GiP	10 47 42.400	+13 59 08.30	11.55	11.24	10.38			~	775	1
42	M 105	LIN	10 47 49.600	+12 34 53.87		10.56	9.76	9.12	8.18	~	1463	0
43	NGC 3384	GiG	10 48 16.8855574392	+12 37 45.371165844		10.0				~	596	1
44	NGC 3412	GiG	10 50 53.2803559464	+13 24 43.721664876	11.84	11.45	10.54			~	238	1
45	NGC 3414	GiP	10 51 16.2099174408	+27 58 30.297624852		12.1				~	329	0
46	NGC 3457	GiG	10 54 48.6357589320	+17 37 16.420097712		13.0				~	99	0
47	NGC 3458	GiG	10 56 01.4778952176	+57 07 01.095032244		13.20				~	110	1
48	UGC 6062	AG?	10 58 37.5665096616	+09 03 01.587767868		13.7				~	68	0
49	NGC 3489	GiG	11 00 18.5483994744	+13 54 04.206202668	11.46	11.12	10.29			~	400	1
50	NGC 3522	GiG	11 06 40.4644062552	+20 05 07.900946304		14.13				~	105	1
51	IC 676	GiG	11 12 39.8140774166	+09 03 19.836734750		13.4				~	139	0
52	NGC 3599	GiP	11 15 26.9494646448	+18 06 37.428503940		13.0				~	208	0
53	NGC 3605	GiG	11 16 46.5896102400	+18 01 01.777666908		12.7				~	253	0
54	NGC 3608	LIN	11 16 58.967	+18 08 54.71		11.7				~	508	0
55	NGC 3610	GiG	11 18 25.2827189856	+58 47 10.433735988		11.4				~	311	0
56	NGC 3613	GiG	11 18 36.130	+57 59 59.73		11.6				~	213	0
57	NGC 3619	GiG	11 19 21.5781353400	+57 45 28.018459368		12.6				~	172	0
58	NGC 3630	GiG	11 20 16.9744492824	+02 57 51.853628196		12.91				~	102	1
59	NGC 3640	GiG	11 21 06.852	+03 14 05.15	11.89	11.36	10.44			~	275	3
60	NGC 3641	GiG	11 21 08.8111086864	+03 11 40.530956028		14.10	13.20			~	107	1
61	NGC 3648	GiG	11 22 31.5070422432	+39 52 36.753613320		13.57	12.64			~	77	0
62	NGC 3665	rG	11 24 43.630	+38 45 46.05	13.71	13.26	11.62			~	344	1
63	NGC 3674	GiG	11 26 26.6135762208	+57 02 54.069580860		13.1				~	78	0
64	NGC 3757	GiG	11 37 02.8650138288	+58 24 55.817369748		13.5				~	81	0
65	IC 719	AG?	11 40 18.4960446000	+09 00 35.742181788		13.6				~	122	0
66	NGC 3941	Sy2	11 52 55.3609498656	+36 59 10.716212904		11.45	11.62	9.97		~	244	0
67	NGC 3945	GiG	11 53 13.6081388304	+60 40 32.125024704		11.6				~	242	0
68	NGC 4026	GiP	11 59 25.0914676128	+50 57 41.951225700		12.17				~	268	0
69	NGC 4036	LIN	12 01 26.7603659808	+61 53 44.625848784		12.18	11.20			~	260	0
70	NGC 4078	GiG	12 04 47.6340386496	+10 35 44.325761640		13.9				~	77	0
71	NGC 4111	GiP	12 07 03.1334091672	+43 03 56.345868252	12.07	11.63	10.74			~	335	1
72	NGC 4143	LIN	12 09 36.0679174440	+42 32 03.031963368		13.04	12.08			~	233	0
73	NGC 4150	GiG	12 10 33.655	+30 24 05.35	12.72	12.44	11.64			~	310	2
74	NGC 4168	Sy1	12 12 17.2692381408	+13 12 18.688208724	12.58	12.11	11.18			~	376	2
75	NGC 4179	GiG	12 12 52.1118346920	+01 17 58.926287976		12.8				~	172	0
76	NGC 4191	LIN	12 13 50.4023369592	+07 12 03.219957216		13.9				~	111	0
77	NGC 4203	LIN	12 15 05.0549203560	+33 11 50.383965120		12.98	11.99			~	492	2
78	NGC 4215	GiG	12 15 54.5328986304	+06 24 04.120817832		13.0				~	126	0
79	NGC 4233	GiG	12 17 07.690	+07 37 27.96		13.2				~	166	0
80	NGC 4251	GiP	12 18 08.3407168056	+28 10 31.135758600		11.5				~	202	0
81	NGC 4255	GiG	12 18 56.1463134360	+04 47 10.064149440		13.5				~	103	0
82	NGC 4259	GiP	12 19 22.2081135384	+05 22 35.021735076		14.5				~	90	0
83	NGC 4261	LIN	12 19 23.2160630	+05 49 29.700024		13.92	12.87			~	1223	0
84	NGC 4262	GiG	12 19 30.5694336288	+14 52 39.517143276	13.00	12.49	11.55			~	356	1
85	NGC 4264	GiG	12 19 35.7585896592	+05 50 48.361567560		13.9				~	111	0
86	NGC 4267	GiG	12 19 45.2735790120	+12 47 53.704780368		12.4				~	243	0
87	NGC 4268	GiP	12 19 47.2123036128	+05 17 01.556546928		13.9				~	114	0
88	NGC 4270	GiP	12 19 49.4714861496	+05 27 48.394930572		13.3				~	181	0
89	NGC 4278	LIN	12 20 06.8242	+29 16 50.722	11.54	11.09	10.16			~	946	2
90	NGC 4283	GiG	12 20 20.7691223880	+29 18 39.154727556	13.47	13.00	12.07			~	199	1
91	NGC 4281	GiG	12 20 21.5246429784	+05 23 11.188759092		12.5				~	186	0
92	IC 782	GiG	12 21 36.9678660552	+05 45 56.821050468		15.1				~	58	0
93	NGC 4324	GiG	12 23 06.1747492368	+05 15 01.229253372		12.5				~	197	0
94	NGC 4346	GiG	12 23 27.9622537560	+46 59 37.642074396		12.3				~	112	0
95	NGC 4340	GiP	12 23 35.2816311336	+16 43 20.443217952		12.4				~	277	0
96	NGC 4342	GiP	12 23 39.0032044488	+07 03 14.359499100		13.0				~	314	0
97	NGC 4350	GiP	12 23 57.814	+16 41 36.08		11.5	11.08			~	317	0
98	NGC 4365	GiG	12 24 28.228	+07 19 03.07		11.5				~	840	0
99	NGC 4371	GiG	12 24 55.4333579760	+11 42 15.144247584	12.35	11.79	10.81			~	318	1
100	M 84	Sy2	12 25 03.74333	+12 53 13.1393	12.67	12.09	10.49			~	1762	2
101	NGC 4377	GiG	12 25 12.3315185232	+14 45 43.811084016		12.5				~	220	0
102	NGC 4379	GiG	12 25 14.7458757864	+15 36 26.755074576	13.05	12.63	11.72			~	226	1
103	M 85	GiP	12 25 24.053	+18 11 27.89		10.2				~	644	0
104	NGC 4387	GiG	12 25 41.6768484264	+12 48 37.804615956	13.42	13.01	12.12		10.87	~	392	1
105	M 86	GiG	12 26 11.814	+12 56 45.49	10.32	9.83	8.90		7.50	~	1083	1
106	NGC 4417	GiP	12 26 50.6084412168	+09 35 03.354168804		12.2				~	257	0
107	NGC 4425	GiG	12 27 13.3361738592	+12 44 05.190746352	13.12	12.73	11.83			~	186	1
108	NGC 4429	GiG	12 27 26.5040002440	+11 06 27.588767616		11.4				~	317	0
109	NGC 4434	GiG	12 27 36.6771662112	+08 09 15.640206876		13.2				~	258	0
110	NGC 4435	GiG	12 27 40.503	+13 04 44.48	12.23	11.74	10.80			~	445	2
111	NGC 4442	GiG	12 28 03.8815318272	+09 48 13.426522272		11.2				~	282	0
112	NGC 4452	GiG	12 28 43.2980346552	+11 45 18.201826692	13.27	12.87	11.98			~	204	1
113	NGC 4458	GiP	12 28 57.5613938232	+13 14 30.946545276	13.27	12.93	12.07			~	413	2
114	NGC 4459	H2G	12 29 00.0329905416	+13 58 42.826603332		11.6				~	539	0
115	NGC 4461	GiP	12 29 03.010	+13 11 01.88	12.56	12.09	11.19			~	236	2
116	M 49	Sy2	12 29 46.8	+08 00 01		13.21	12.17			~	2092	2
117	NGC 4473	GiG	12 29 48.878	+13 25 45.55	11.60	11.16	10.20			~	644	1
118	NGC 4474	GiG	12 29 53.5396737408	+14 04 06.881708604		12.6				~	262	0
119	NGC 4476	GiG	12 29 59.0772974472	+12 20 55.292203464	13.28	13.01	12.19			~	320	1
120	NGC 4477	Sy2	12 30 02.1955766304	+13 38 11.543715888	11.98	11.38	10.42			~	396	2
121	NGC 4478	GiP	12 30 17.4160005576	+12 19 42.790577160	12.82	12.36	11.45		10.17	~	490	1
122	NGC 4483	GiG	12 30 40.6442816856	+09 00 56.391019596		13.4				~	165	0
123	M 87	AGN	12 30 49.42338414	+12 23 28.0436859	10.16	9.59	8.63		7.49	~	7181	3
124	NGC 4489	GiG	12 30 52.2472748976	+16 45 31.866359004		13.2				~	252	0
125	NGC 4503	GiP	12 32 06.2324986032	+11 10 34.960071396	12.66	12.05	11.07			~	215	1
126	NGC 4521	GiP	12 32 47.6521626240	+63 56 21.065674776		13.0				~	87	0
127	IRAS 12315+0758	GiG	12 34 03.029	+07 41 56.90		10.6				~	670	0
128	NGC 4528	GiG	12 34 06.0685723920	+11 19 16.528093428	13.39	12.97	12.06			~	189	1
129	NGC 4546	Sy2	12 35 29.4931619736	-03 47 35.383858656	11.89	11.30	10.32			~	221	1
130	NGC 4550	GiP	12 35 30.5913588048	+12 13 14.921166792	12.97	12.56	11.68			~	537	1
131	NGC 4551	GiP	12 35 37.9542692328	+12 15 50.284593432	13.49	12.97	12.02			~	354	1
132	M 89	LIN	12 35 39.80733343	+12 33 22.8308657	11.29	10.73	9.75			~	995	2
133	NGC 4564	GiG	12 36 26.9869512504	+11 26 21.204472848	12.51	12.05	11.12			~	595	1
134	NGC 4570	GiG	12 36 53.3828233728	+07 14 47.697174852		11.8				~	331	0
135	NGC 4578	GiG	12 37 30.5571349752	+09 33 18.241180344		12.9				~	280	0
136	IC 3631	AG?	12 39 48.0178208472	+12 58 26.295194604		14.5				~	91	0
137	NGC 4596	GiP	12 39 55.9544722920	+10 10 34.185047628		12.4				~	365	0
138	NGC 4612	GiG	12 41 32.7539216616	+07 18 53.535354804		11.90				~	214	1
139	M 59	GiG	12 42 02.2581375168	+11 38 48.909507756		11.0				~	693	0
140	NGC 4623	GiG	12 42 10.6913697096	+07 40 37.130799216		13.24				~	197	1
141	NGC 4638	GiP	12 42 47.4239240016	+11 26 32.970950556		12.2	11.23			~	281	1
142	NGC 4636	LIN	12 42 49.8333280080	+02 41 15.951929028		12.62	11.84			~	1117	1
143	NGC 4643	LIN	12 43 20.1435647088	+01 58 41.716062264		11.9				~	266	0
144	M 60	GiP	12 43 39.9680	+11 33 09.696		10.3				~	1348	1
145	NGC 4660	GiP	12 44 31.9814021280	+11 11 25.739106972		12.1				~	417	0
146	NGC 4684	GiG	12 47 17.5097110680	-02 43 38.661355884		12.4				~	142	0
147	NGC 4690	GiG	12 47 55.5227576592	-01 39 21.805729344		14.0				~	61	0
148	NGC 4694	AGN	12 48 15.091	+10 59 01.05		13.93	13.36			~	276	0
149	NGC 4697	GiG	12 48 35.8981498824	-05 48 02.482374564		10.97		9.83		~	859	0
150	NGC 4710	H2G	12 49 38.958	+15 09 55.76		11.6				~	310	0
151	NGC 4733	GiP	12 51 06.7716245736	+10 54 43.486587972		13.2				~	141	0
152	NGC 4754	GiP	12 52 17.563	+11 18 49.18		11.6				~	284	0
153	NGC 4753	GiG	12 52 22.112	-01 11 58.88	11.26	10.85	9.95			~	274	1
154	NGC 4762	LIN	12 52 56.049	+11 13 50.88		11.1				~	360	0
155	NGC 5103	GiG	13 20 30.1029602496	+43 05 02.219249040		13.6				~	93	0
156	NGC 5173	GiP	13 28 25.2798599736	+46 35 29.890508928		13.10				~	144	1
157	NGC 5198	GiP	13 30 11.3858465016	+46 40 14.667297420		13.2				~	177	0
158	NGC 5273	Sy1	13 42 08.3801616672	+35 39 15.467518836		14.01	13.12			~	468	0
159	NGC 5308	GiP	13 47 00.4361008824	+60 58 23.334066588		12.5				~	205	0
160	NGC 5322	SyG	13 49 15.24	+60 11 25.8		11.3				~	415	2
161	NGC 5342	GiG	13 51 25.898	+59 51 46.85		14.4				~	64	0
162	NGC 5353	GiP	13 53 26.6998	+40 16 58.872		11.8		10.57		~	287	1
163	NGC 5379	GiP	13 55 34.347	+59 44 34.17		14.1				~	97	0
164	UGC 8876	GiG	13 56 58.0631953080	+45 58 23.672587944		14.3				~	59	0
165	NGC 5422	GiG	14 00 42.0190513968	+55 09 51.863031684		13.1				~	156	0
166	NGC 5473	GiG	14 04 43.2276404712	+54 53 33.499699368		12.5				~	145	0
167	NGC 5475	GiG	14 05 12.4060318056	+55 44 30.694106112		13.4				~	99	0
168	NGC 5485	LIN	14 07 11.3594809920	+55 00 06.084219996	14.34	13.82	12.22			~	249	0
169	NGC 5493	GiG	14 11 29.3792026752	-05 02 36.999208608		13.5				~	101	0
170	NGC 5507	EmG	14 13 19.8600321120	-03 08 56.000082660		13.30	12.46			~	111	0
171	NGC 5557	GiG	14 18 25.708	+36 29 37.28		12.2				~	222	0
172	NGC 5574	GiP	14 20 55.9688962704	+03 14 16.792454148	13.54	13.23	12.39			~	147	1
173	NGC 5576	GiP	14 21 03.691	+03 16 15.78	12.25	11.85	10.96			~	329	1
174	NGC 5631	Sy2	14 26 33.2913328320	+56 34 57.424681848		13.51	12.55			~	180	0
175	NGC 5638	GiP	14 29 40.3717451400	+03 13 59.987811648	12.57	12.14	11.20			~	243	2
176	IC 1024	GiG	14 31 27.221	+03 00 32.78		13.87				~	117	1
177	NGC 5770	GiG	14 53 15.0128865696	+03 57 35.024994900	13.49	13.15	12.26			~	102	1
178	NGC 5813	LIN	15 01 11.2302420864	+01 42 07.141569696	12.00	11.45	10.46	10.06		~	637	1
179	NGC 5831	GiG	15 04 07.0002600408	+01 13 11.705607012		13.1		11.19		~	294	0
180	NGC 5838	GiP	15 05 26.2447857696	+02 05 57.349108392		12.1		10.26		~	238	0
181	NGC 5839	GiG	15 05 27.4892848248	+01 38 05.284771152		13.9	12.19	11.67	10.72	~	100	0
182	NGC 5845	GiG	15 06 00.7823239488	+01 38 01.704838596		13.8	11.20	12.06	9.94	~	385	0
183	NGC 5846	BiC	15 06 29.253	+01 36 20.29		11.9		9.74		~	849	1
184	NGC 5854	GiG	15 07 47.6993537544	+02 34 07.059522288		13.1		11.23		~	149	0
185	NGC 6014	AG?	15 55 57.4094044224	+05 55 55.125528852		13.8				~	96	0
186	NGC 6278	GiP	17 00 50.3235598776	+23 00 39.735179064		13.8				~	159	0
187	NGC 6548	GiP	18 05 59.2439762424	+18 35 14.256371040		13.1				~	76	0
188	NGC 7280	GiP	22 26 27.5758899936	+16 08 53.421593496		13.6				~	159	0
189	NGC 7332	GiP	22 37 24.5373044952	+23 47 53.830708800		12.0				~	373	0
190	NGC 7457	AG?	23 00 59.9263288440	+30 08 41.764398792		11.04	11.87			~	440	0
191	NGC 7693	EmG	23 33 10.5122296440	-01 17 30.952012200		14.7				~	39	0
192	NGC 7710	EmG	23 35 46.1540934744	-02 52 51.368362968		15		13.44		~	52	0

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