2014MNRAS.443.1281K

Query : 2014MNRAS.443.1281K

2014MNRAS.443.1281K - Mon. Not. R. Astron. Soc., 443, 1281-1290 (2014/September-2)

KK258, a new transition dwarf galaxy neighbouring the Local Group.

KARACHENTSEV I.D., MAKAROVA L.N., TULLY R.B., WU P.-F. and KNIAZEV A.Y.

Abstract (from CDS):

Here, we present observations with the Advanced Camera for Surveys on the Hubble Space Telescope of the nearby, transition-type dwarf galaxy KK258 = ESO468-020. We measure a distance of 2.23±0.05 Mpc using the Tip of Red Giant Branch method. We also detect Hα emission from this gas-poor dwarf transition galaxy at the velocity Vh = 92±5 or VLG = 150 km/s. With this distance and velocity, KK258 lies near the local Hubble flow locus with a peculiar velocity ∼ 3 km/s. We discuss the star formation history of KK258 derived from its colour-magnitude diagram. The specific star formation rate is estimated to be log[sSFR] = -2.64 and -2.84 (G/yr) from the FUV-flux and Hα-flux, respectively. KK258 has the absolute magnitude MB = -10.3 mag, the average surface brightness of 26.0mag/arcsec2 and the hydrogen mass log(MH I < 5.75 M☉. We compare KK258 with 29 other dTr- galaxies situated within 5 Mpc from us, and conclude that its properties are typical for transition dwarfs. However, KK258 resides 0.8 Mpc away from its significant neighbour, the Sdm galaxy NGC 55, and such a spatial isolation is unusual for the local transition dwarfs.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: distances and redshifts - galaxies: dwarf - galaxies: individual: KK258 - galaxies: stellar content

Simbad objects: 79

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Number of rows : 79
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-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 ESO 349-31 AG? 00 08 13.1536 -34 34 47.836   15.54   14.99   ~ 156 3
3 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
4 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 120 1
5 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
6 ESO 294-10 AG? 00 26 33.37 -41 51 19.1   15.76 15.3 14.97   ~ 122 2
7 NAME NGC 55 Group GrG 00 32 -29.7           ~ 10 0
8 [KK2000] 3 GrG 00 36 42 -27 49.0           ~ 10 0
9 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
10 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
11 ESO 540-30 AG? 00 49 20.96 -18 04 31.5   16.45   15.33   ~ 92 1
12 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
13 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
14 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
15 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
16 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
17 UGC 1703 LSB 02 12 55.14 +32 48 48.9   18       ~ 28 0
18 LEDA 2807114 G 03 44 56.7 +72 03 52           ~ 13 0
19 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
20 LEDA 2807061 G 07 00 29.3 -04 12 30           ~ 43 1
21 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 93 0
22 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
23 Z 264-88 AG? 09 16 02.0195908968 +52 50 42.051257412   14.0 13.2     ~ 141 0
24 LEDA 5056943 LSB 09 26 27.9 +70 30 24           ~ 19 0
25 LEDA 5056932 LSB 09 39 15.9 +71 18 42           ~ 17 0
26 LEDA 5056944 G 09 44 34.4 +71 28 57           ~ 16 0
27 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
28 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
29 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
30 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
31 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
32 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
33 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 113 1
34 UGC 5442 AG? 10 07 01.90 +67 49 39.0 17.09 15.73 15.07 14.81   ~ 95 1
35 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
36 LEDA 5056938 LSB 10 14 55.8 +68 45 27           ~ 17 0
37 LEDA 5056947 LSB 10 15 06.9 +69 02 15           ~ 16 0
38 LEDA 4689216 GiG 10 21 25.2 +71 06 58           ~ 62 0
39 NAME Leo P BiC 10 21 45.123 +18 05 16.89           ~ 268 0
40 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
41 MCG+10-17-067 AG? 11 46 59.08 +61 20 08.0   16.5       ~ 22 0
42 Z 214-32 AG? 11 50 52.98254 +38 52 50.6594   13.72 13.9 13.39   ~ 175 0
43 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 105 1
44 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
45 IC 3104 AG? 12 18 46.06 -79 43 33.9   13.65 12.8 12.04   ~ 93 1
46 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
47 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 149 0
48 LEDA 166146 G 12 49 13.3 +35 36 43           ~ 24 1
49 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2
50 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
51 LEDA 45303 G 13 05 43.7 -07 45 26           ~ 14 0
52 Z 352-57 AG? 13 08 36.295 +78 56 13.93 15.14 14.54 14.08 13.86   ~ 46 0
53 NGC 5011C GiC 13 13 11.88 -43 15 55.7   14.25       ~ 38 1
54 LEDA 166164 G 13 22 56.2 -33 34 22   17.6       ~ 27 0
55 LEDA 3097728 G 13 23 29.9 -23 23 35           ~ 12 0
56 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
57 LEDA 166167 G 13 27 27.8 -45 21 10           ~ 28 0
58 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
59 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
60 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
61 Z 190-66 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 161 0
62 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 89 0
63 MCG+06-31-023 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 123 1
64 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
65 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
66 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
67 [KK2000] 51 GrG 14 47 29 -22 16.7           ~ 4 0
68 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
69 [KK2000] 54 GrG 17 19 54 -77 21.9           ~ 5 0
70 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 253 4
71 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
72 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
73 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
74 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
75 ESO 468-20 G 22 40 43.6 -30 47 55   15.88   15.13   ~ 45 0
76 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
77 MCG-05-55-012 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 163 0
78 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 93 1
79 NAME Local Group GrG ~ ~           ~ 9325 0

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