2012MNRAS.420.2819K

Query : 2012MNRAS.420.2819K

2012MNRAS.420.2819K - Mon. Not. R. Astron. Soc., 420, 2819-2834 (2012/March-2)

Dwarf galaxies in the Coma cluster – I. Velocity dispersion measurements.

KOURKCHI E., KHOSROSHAHI H.G., CARTER D., KARICK A.M., MARMOL-QUERALTO E., CHIBOUCAS K., TULLY R.B., MOBASHER B., GUZMAN R., MATKOVIC A. and GRUEL N.

Abstract (from CDS):

We present the study of a large sample of early-type dwarf galaxies in the Coma cluster observed with DEIMOS on the Keck II to determine their internal velocity dispersion. We focus on a subsample of 41 member dwarf elliptical galaxies for which the velocity dispersion can be reliably measured, 26 of which were studied for the first time. The magnitude range of our sample is -21 < MR < -15 mag.

This paper (Paper I) focuses on the measurement of the velocity dispersion and their error estimates. The measurements were performed using penalized pixel fitting (PPXF) and using the calcium triplet absorption lines. We use Monte Carlo bootstrapping to study various sources of uncertainty in our measurements, namely statistical uncertainty, template mismatch and other systematics. We find that the main source of uncertainty is the template mismatch effect which is reduced by using templates with a range of spectral types.

Combining our measurements with those from the literature, we study the Faber–Jackson relation (L∝σα) and find that the slope of the relation is α= 1.99±0.14 for galaxies brighter than MR ≃ -16 mag. A comprehensive analysis of the results combined with the photometric properties of these galaxies is reported in Paper II. Dwarf galaxies in the Coma cluster – II. Spectroscopic and photometric fundamental planes


Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): galaxies: clusters: individual: Coma - galaxies: dwarf - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: fundamental parameters - galaxies: kinematics and dynamics

Simbad objects: 74

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Number of rows : 74
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 * 3 Cet s*r 00 04 30.1187522978 -10 30 34.278904524   6.541 4.924     K3Ib 119 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 HD 6497 PM* 01 07 00.1745063280 +56 56 05.898658776   7.605 6.401     K2III-IV 124 0
4 HD 17925 RS* 02 52 32.1281856011 -12 46 10.968056223 7.48 6.91 6.05 5.34 4.89 K1V 557 0
5 HD 22365 * 03 33 07.0339092120 -57 56 35.755433916   9.57 9.31     A3mA4-F0 13 0
6 HD 44007 Pe* 06 18 48.5269024752 -14 50 43.423248948   8.85 8.06 7.69   G5(IV)wF3/5 197 0
7 HD 45282 Pe* 06 26 40.7720940072 +03 25 29.792391024 8.71 8.69 8.03     Gwl 164 0
8 * 30 Gem PM* 06 43 59.2871476656 +13 13 40.799645724 6.82 5.65 4.49 3.63 3.03 K0+IIICa1 156 0
9 V* QY Pup s*r 07 47 38.5262364936 -15 59 26.481207696   8.095 6.309     K1Ia-Iab 102 0
10 HD 63791 PM* 07 54 28.7247271128 +62 08 10.773103272   8.81 7.90     G0 119 0
11 * 78 Cnc PM* 09 09 02.3116000152 +17 28 10.749983016   8.386 7.176     K3III 54 0
12 HD 81192 RG* 09 24 45.3356450736 +19 47 11.867336592 8.06 7.50 6.56     G8IIICH 130 0
13 * d UMa RS* 09 34 28.8594727848 +69 49 49.226541888 5.67 5.34 4.57 3.91 3.50 G5III-IV 315 0
14 V* DR Leo LP* 09 41 35.1164474616 +31 16 40.128589164 9.18 7.42 5.84 4.55 3.58 K6III 54 0
15 HD 88230 PM* 10 11 22.1399492383 +49 27 15.251007087 9.23 7.94 6.61 5.36 4.56 K6VeFe-1 494 0
16 * 36 UMa B PM* 10 30 25.3088805072 +55 59 56.855409072   10.10   8.749   K7Ve 143 1
17 * eps Crt * 11 24 36.5912121144 -10 51 33.575503752   6.338 4.802     K4III 95 0
18 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
19 2MASX J12592136+2758248 GiC 12 59 21.4151965488 +27 58 24.866619600 17.67 17.608 16.12 16.09 15.57 ~ 42 0
20 [EDG2007] 459 GiC 12 59 26.3751230664 +27 59 18.345486804 20.412 20.051 19.022 18.626 17.763 ~ 8 0
21 LEDA 44594 EmG 12 59 26.5981818744 +27 59 54.533097708 17.532 17.181 15.87 15.52 15.052 ~ 76 0
22 SDSS J125928.50+280109.3 AG? 12 59 28.503 +28 01 09.34 19.35 19.32 18.07 17.81 17.9 ~ 23 0
23 GMP 3424 GiC 12 59 29.3252498928 +27 56 32.011165392 20.097 19.713 18.773 18.085 17.416 ~ 15 0
24 SDSS J125930.25+280115.0 G 12 59 30.257 +28 01 15.04 19.403 19.182 17.82 17.53 17.6 ~ 25 0
25 LEDA 1821555 GiC 12 59 32.105 +27 55 15.75 19.30 19.13 17.59 17.20 17.13 ~ 24 0
26 LEDA 1821898 GiC 12 59 35.180 +27 56 05.00 18.974 18.894 18.055 17.607 17.065 ~ 23 0
27 GMP 3336 GiC 12 59 35.33 +27 54 22.0           ~ 9 0
28 CAIRNS J125935.95+275421.4 GiC 12 59 35.89 +27 54 22.2 19.286 19.184 18.345 17.665 16.977 ~ 13 0
29 LEDA 126788 G 12 59 37.0110665016 +28 01 06.974523876 19.09 18.99 17.66 17.31 16.98 ~ 27 0
30 GMP 3308 G 12 59 37.11 +27 58 20.4 20.199 19.827 18.842 18.194 17.613 ~ 13 0
31 NGC 4875 GiC 12 59 37.9093929384 +27 54 26.400242232 16.03 15.92 14.57 14.322 13.605 ~ 99 0
32 LEDA 44635 AG? 12 59 37.9916897496 +28 00 03.640609728 18.17 18.097 16.60 16.20 16.031 ~ 36 0
33 SDSS J125942.36+280158.5 G 12 59 42.37 +28 01 58.5     18.76 18.47 18.3 ~ 9 0
34 LEDA 126785 GiC 12 59 44.08 +28 00 46.8 19.657 19.718 18.62 18.38 17.761 ~ 12 0
35 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
36 LEDA 126781 G 12 59 46.93296 +27 59 30.8768 18.90 18.62 17.43 17.14 16.9 ~ 29 0
37 SDSS J125948.57+275857.7 AG? 12 59 48.577 +27 58 57.70 19.06 18.83 17.69 17.41 17.4 ~ 24 0
38 GMP 3141 G 12 59 49.08 +27 58 34.2   20.88 20.17 19.38 19.11 ~ 8 0
39 LEDA 1821341 G 12 59 50.18143 +27 54 45.4993 18.60 18.68 17.40 17.10 17.0 ~ 33 0
40 SDSS J125951.47+275935.4 G 12 59 51.470 +27 59 35.48   20.70 20.04 19.27 19.02 ~ 10 0
41 SDSS J125953.93+275813.6 G 12 59 53.934 +27 58 13.69 19.18 18.93 17.78 17.48 17.4 ~ 22 0
42 LEDA 126776 AG? 12 59 55.696 +27 55 03.75 19.979 19.40 18.60 17.98 17.7 ~ 23 0
43 SDSS J130000.97+275929.5 G 13 00 00.972 +27 59 29.55 19.93 19.666 18.23 17.91 17.8 ~ 20 0
44 SDSS J130004.03+280030.7 G 13 00 04.00 +28 00 31.1 20.50 20.05 18.79 18.54 18.6 ~ 12 0
45 LEDA 44707 AG? 13 00 05.3994110544 +28 01 28.005793932 17.03 17.106 15.42 15.02 15.09 ~ 58 0
46 LEDA 126769 G 13 00 07.1263506168 +27 55 51.481464060 19.27 18.96 17.68 17.24 17.4 ~ 22 0
47 GMP 2877 GiC 13 00 11.410 +27 54 36.37 19.87 19.88 19.08 18.04 18.3 ~ 12 0
48 IC 4021 LIN 13 00 14.7492904032 +28 02 28.679693064 16.12 15.974 14.75 14.451 13.783 ~ 125 0
49 SDSS J130016.96+275415.9 G 13 00 16.962 +27 54 15.99     19.73 19.48 19.5 ~ 10 0
50 SDSS J130018.70+275512.6 G 13 00 18.705 +27 55 12.62 20.42   19.05 18.73 18.9 ~ 13 0
51 [EDG2007] 608 GiC 13 00 20.08 +27 59 39.2 20.093 20.188 18.55 18.27 18.587 ~ 9 0
52 LEDA 126758 EmG 13 00 21.6698381208 +27 53 54.785936292 18.39 18.205 16.81 16.57 16.171 ~ 36 0
53 SDSS J130022.65+275754.8 G 13 00 22.651 +27 57 54.89 20.31 20.122 18.30 17.89 18.2 ~ 17 0
54 SDSS J130026.15+280032.0 AG? 13 00 26.159 +28 00 32.01 19.46 19.263 17.57 17.25 17.7 ~ 20 0
55 SDSS J130027.87+275916.2 G 13 00 27.877 +27 59 16.26 20.79   18.90 18.54 19.1 ~ 9 0
56 IC 4030 G 13 00 27.9700441440 +27 57 21.580940088 16.65 16.50 15.27 14.91 14.49 ~ 77 0
57 SDSS J130033.33+275849.3 AG? 13 00 33.335 +27 58 49.31 19.98 19.883 17.93 17.56 18.0 ~ 11 0
58 LEDA 1821892 G 13 00 34.42612 +27 56 04.8551 18.70 18.512 16.81 16.46 16.6 ~ 24 0
59 SDSS J130036.58+275552.1 AG? 13 00 36.586 +27 55 52.16 20.31 19.872 18.28 17.98 18.4 ~ 16 0
60 SDSS J130037.31+275441.0 G 13 00 37.311 +27 54 41.00     18.97 18.61 19.0 ~ 13 0
61 HD 117858 PM* 13 32 30.9718980317 +36 02 06.456041990   8.54   7.6   G0 69 0
62 HD 117876 RG* 13 32 48.2138325552 +24 20 48.277563036   7.09 6.10 5.5   G8II-III 136 0
63 HD 130705 PM* 14 49 26.1552733584 +10 02 38.965893360   7.897 6.627     K3IIIb:Fe2 68 0
64 * tet Lib PM* 15 53 49.5379222294 -16 43 45.469368699 5.99 5.17 4.16 3.44 2.92 G9IIIb 124 0
65 * zet Her SB* 16 41 17.16104 +31 36 09.7873 3.640 3.430 2.800 2.31 1.99 G0IV 562 0
66 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 481 0
67 * mu.01 Her ** 17 46 27.5472960785 +27 43 14.560978925 4.56 4.17 3.42 2.89 2.51 G5IV 719 0
68 * 109 Her ** 18 23 41.8897062084 +21 46 11.109609046 6.18 5.02 3.84 2.99 2.39 K2IIIab 187 0
69 HD 182293 PM* 19 23 12.2158868040 +20 16 40.604334888   8.277 7.105     K3IVp 65 0
70 * 10 Vul * 19 43 42.9167210832 +25 46 18.912693900   6.433 5.497     G8III 90 0
71 HD 187111 Pe* 19 48 39.5744746680 -12 07 19.738101036   8.92 7.75     G8wF8III/IV 153 0
72 HD 201099 PM* 21 07 43.8397579570 -05 33 57.178340785   8.12 7.60     F7V 91 0
73 HD 210752 PM* 22 12 43.5390918662 -06 28 08.122879852   7.97 7.44     G1V 135 0
74 HD 215065 PM* 22 40 54.7139749239 +66 31 24.355452878   8.05   7.1   K1 75 0

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