2018MNRAS.477..335L

Query : 2018MNRAS.477..335L

2018MNRAS.477..335L - Mon. Not. R. Astron. Soc., 477, 335-358 (2018/June-2)

Diversity in the stellar velocity dispersion profiles of a large sample of brightest cluster galaxies z <= 0.3.

LOUBSER S.I., HOEKSTRA H., BABUL A. and O'SULLIVAN E.

Abstract (from CDS):

We analyse spatially resolved deep optical spectroscopy of brightestcluster galaxies (BCGs) located in 32 massive clusters with redshifts of 0.05 <= z <= 0.30 to investigate their velocity dispersion profiles. We compare these measurements to those of other massive early-type galaxies, as well as central group galaxies, where relevant. This unique, large sample extends to the most extreme of massive galaxies, spanning M_K between -25.7 and -27.8 mag, and host cluster halo mass M₅₀₀ up to 1.7 x 10¹⁵ M_☉. To compare the kinematic properties between brightest group and cluster members, we analyse similar spatially resolved long-slit spectroscopy for 23 nearby brightest group galaxies (BGGs) from the Complete Local-Volume Groups Sample. We find a surprisingly large variety in velocity dispersion slopes for BCGs, with a significantly larger fraction of positive slopes, unique compared to other (non-central) early-type galaxies as well as the majority of the brightest members of the groups. We find that the velocity dispersion slopes of the BCGs and BGGs correlate with the luminosity of the galaxies, and we quantify this correlation. It is not clear whether the full diversity in velocity dispersion slopes that we see is reproduced in simulations.

Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: kinematics and dynamics - galaxies: stellar content

Simbad objects: 63

Full paper

View the references in ADS

Number of rows : 63

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	ACO 68	ClG	00 37 06.2	+09 09 33						~	181	0
2	M 32	IG	00 42 41.825	+40 51 54.61	9.51	9.03	8.08			~	2121	2
3	NGC 315	LIN	00 57 48.88334410	+30 21 08.8119345	12.80	12.20	11.16	11.26		~	762	2
4	NGC 410	GiG	01 10 58.9016492712	+33 09 07.053878052	13.08	12.52	11.48			~	147	2
5	NGC 524	GiP	01 24 47.7429545736	+09 32 20.089023900		11.5				~	448	1
6	NGC 584	GiP	01 31 20.7231919800	-06 52 04.770287472	11.93	11.44	10.48			~	391	2
7	ACO 209	ClG	01 31 57.5	-13 34 35						~	283	0
8	ACO 267	ClG	01 52 42.10	+01 00 29.4						~	219	0
9	NGC 777	Sy2	02 00 14.9065707744	+31 25 45.850721628	13.09	12.49	11.45			~	174	2
10	NGC 924	GiG	02 26 46.8206455368	+20 29 51.036018756		13.8				~	61	0
11	NGC 1060	GiG	02 43 15.045	+32 25 30.04	13.71	13.00	11.81			~	104	1
12	ACO 383	ClG	02 48 03.30	-03 31 43.4						~	346	0
13	NGC 1453	GiG	03 46 27.2307890592	-03 58 07.831476768		13		11.30		~	172	0
14	NGC 1587	GiP	04 30 39.9359019384	+00 39 41.922470340		13.3				~	137	0
15	ClG 0440+02	ClG	04 43 09.7	+02 10 19			17.03			~	123	0
16	NGC 1779	GiG	05 05 18.0311553816	-09 08 50.070486912		13.18		11.86		~	38	0
17	ACO 586	ClG	07 32 20.3	+31 37 58						~	174	0
18	ACO 611	ClG	08 00 58.7	+36 02 49						~	252	0
19	ACO 644	ClG	08 17 24.5	-07 30 46						~	217	0
20	NGC 2563	GiG	08 20 35.6870161656	+21 04 04.111020012		13.7	12.39			~	148	1
21	ACO 646	ClG	08 22 10.0	+47 05 58						~	99	1
22	ACO 754	ClG	09 08 50.1	-09 38 12						~	658	1
23	BAX 137.3194+10.9772	ClG	09 09 12.7	+10 58 32						~	56	1
24	NGC 2768	SyG	09 11 37.504	+60 02 13.95	11.30	10.84	9.87			~	491	2
25	ACO 780	ClG	09 18 30	-12 15.7						~	449	0
26	ACO 963	ClG	10 17 09.6	+39 01 00						~	385	0
27	ACO 990	ClG	10 23 41.1	+49 08 06						~	73	0
28	NGC 3613	GiG	11 18 36.130	+57 59 59.73		11.6				~	205	0
29	NGC 3665	rG	11 24 43.630	+38 45 46.05	13.71	13.26	11.62			~	330	1
30	NGC 4261	LIN	12 19 23.2160630	+05 49 29.700024		13.92	12.87			~	1199	0
31	ACO 1650	ClG	12 58 36.76	-01 43 34.2						~	292	0
32	ACO 1656	ClG	12 59 48.7	+27 58 50						~	4650	2
33	ACO 1689	ClG	13 11 29.5	-01 20 28						~	1099	0
34	NGC 5127	LIN	13 23 45.0315298080	+31 33 56.527040808		13.9				~	173	0
35	ACO 1763	ClG	13 35 20.1	+41 00 04						~	300	0
36	ACO 1795	ClG	13 49 00.5	+26 35 07						~	1227	0
37	NGC 5353	GiP	13 53 26.7104646984	+40 16 59.200050612		11.8		10.57		~	274	1
38	ACO 1835	ClG	14 01 02.07	+02 52 43.2						~	671	1
39	NGC 5490	rG	14 09 57.330	+17 32 43.53		13.4	15.5			~	161	1
40	NGC 5629	GiG	14 28 16.3720374384	+25 50 55.459877604		14.2				~	73	0
41	ACO 1942	ClG	14 38 22.625	+03 39 28.87						~	117	0
42	ACO 1991	ClG	14 54 30.2	+18 37 51						~	320	1
43	ZwCl 1455+2232	ClG	14 57 15.2	+22 20 30			18.62	20.04		~	283	0
44	NGC 5846	BiC	15 06 29.253	+01 36 20.29		11.9		9.74		~	831	1
45	IC 1101	rG	15 10 56.100	+05 44 41.19		15.10				~	153	2
46	ACO 2029	ClG	15 10 58.7	+05 45 42						~	918	0
47	ACO 2050	ClG	15 16 21.6	+00 05 59						~	107	0
48	ACO 2055	ClG	15 18 41.30	+06 12 39.6						~	103	0
49	NGC 5982	LIN	15 38 39.778	+59 21 21.21		12.4				~	286	0
50	ACO 2104	ClG	15 40 06.8	-03 17 39						~	105	0
51	2MASX J15400795-0318162	BiC	15 40 07.958	-03 18 16.29		17.80	16.40	15.70	15.11	~	9	0
52	ACO 2142	ClG	15 58 20.00	+27 14 00.3						~	740	0
53	ACO 2199	ClG	16 28 37.0	+39 31 28						~	1150	1
54	3C 338.0	QSO	16 28 38.24470063	+39 33 04.2335319		12.78	11.78			~	746	5
55	ACO 2259	ClG	17 20 09.2	+27 40 09						~	111	0
56	ACO 2261	ClG	17 22 28.3	+32 09 13						~	331	0
57	NGC 6658	GiG	18 33 55.6327067976	+22 53 17.737619712		15.0				~	42	0
58	ACO 2319	ClG	19 20 45.3	+43 57 43						~	446	1
59	ACO 2390	ClG	21 53 34.6	+17 40 11						~	670	2
60	ACO 2420	ClG	22 10 22.5	-12 11 13						~	109	0
61	ACO 2537	ClG	23 08 22.3	-02 11 29						~	129	0
62	NGC 7619	GiG	23 20 14.524	+08 12 22.63		12.7				~	437	0
63	ACO 2597	ClG	23 25 19.70	-12 07 27.7						~	531	0

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