1998A&AS..133..181M


Query : 1998A&AS..133..181M

1998A&AS..133..181M - Astron. Astrophys., Suppl. Ser., 133, 181-196 (1998/December-1)

CCD imaging of twenty nearby isolated irregular galaxies.

MAKAROVA L.N. and KARACHENTSEV I.D.

Abstract (from CDS):

We present B, V and I CCD stellar photometry for a sample of 20 field irregular dwarf galaxies. Their corrected radial velocity is V0<500km/s. Most of them have been resolved into stars for the first time. Based on photometry of their brightest blue stars we have derived the following distances: 5.9Mpc (UGC 685), 5.4Mpc (UGC 1281), 7.2Mpc (UGC 3303), 7.0Mpc (UGC 3476), 7.3:Mpc (UGC 3600), 7.2:Mpc (UGC 3698), 7.9Mpc (NGC 2337), 8.6Mpc (UGC 3817), 5.7Mpc (UGC 3860), 5.6Mpc (UGC 4426), ≥7.9Mpc (F 565-v1), 7.4:Mpc (UGC 5086), 7.1Mpc (UGC 5272), 5.9Mpc (UGC 5340), 7.1Mpc (UGC 5427), 2.7:Mpc (UGC 5456), 6.6Mpc (NGC 3274), 9.3Mpc (UGC 5889), 5.2Mpc (NGC 5238), and 8.0Mpc (UGC 9405). Our sample exhibits diverse morphological properties evidently caused by their different starburst activity. The galaxy sample has a median integral absolute magnitude MB=-14.6 and a median integral colour (B-V)T=+0.47. One dwarf, UGC 5340, stands out by its very blue colour, (B-V)T=+0.18, and by its high M(HI)/L ratio, as expected for young galaxies. Four objects of the sample are IRAS sources. Being well isolated systems, the considered galaxies may be used to estimate a local value of the Hubble parameter, H=V0/D. For half of the sample galaxies their individual H- values are concentrated within [58-68]km/s/Mpc with a median of 65km/s/Mpc.

Abstract Copyright:

Journal keyword(s): galaxies: distances - galaxies: stellar content - galaxies: dwarf - irregular

VizieR on-line data: <Available at CDS (J/A+AS/133/181): tab2-8.dat tab9-17.dat>

Nomenclature: Tables 2-17: [MK98] UGC NNNN NNN N=826.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 19

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Number of rows : 19
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 UGC 685 AG? 01 07 23.0321 +16 41 00.988 15.01 14.55 14.07     ~ 137 0
2 UGC 1281 LSB 01 49 31.71 +32 35 16.2   13.0       ~ 167 0
3 UGC 3303 GiC 05 24 59.13 +04 30 19.6   16.0       ~ 37 0
4 UGC 3476 AG? 06 30 28.30 +33 18 02.0   15.7       ~ 39 0
5 UGC 3600 LSB 06 55 39.81787 +39 05 43.7871   18       ~ 43 0
6 NGC 2337 AG? 07 10 13.6374445464 +44 27 26.716619844   13.1       ~ 86 0
7 UGC 3817 G 07 22 44.48 +45 06 30.7   17       ~ 47 0
8 UGC 3860 AG? 07 28 17.724 +40 46 11.36   15.50       ~ 149 0
9 UGC 4426 LSB 08 28 28.560 +41 51 27.13   18       ~ 161 0
10 VLSB F565-V01 LSB 09 19 28.2 +21 33 57   16.95       ~ 9 0
11 UGC 5086 LSB 09 32 48.815 +21 27 56.25   18       ~ 40 0
12 UGC 5272 AG? 09 50 22.769 +31 29 17.80   14.48   14.10   ~ 197 0
13 UGC 5340 AG? 09 56 46.047 +28 49 43.77 14.82 14.74 14.59 14.55   ~ 229 1
14 UGC 5427 AG? 10 04 40.949 +29 21 51.54   15.2       ~ 68 0
15 UGC 5456 AG? 10 07 20.182 +10 21 40.16   13.78   13.24   ~ 114 0
16 NGC 3274 EmG 10 32 17.2253817864 +27 40 07.165226244   13.30   12.77   ~ 243 0
17 UGC 5889 GiP 10 47 22.4012897592 +14 04 16.697296020 14.17 14.31 13.61 13.51   ~ 142 1
18 NGC 5238 GiP 13 34 42.5146948080 +51 36 49.168365696   14.2       ~ 130 0
19 UGC 9405 AG? 14 35 24.077 +57 15 21.24   17       ~ 86 0

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