1999A&A...352..399K

Query : 1999A&A...352..399K

1999A&A...352..399K - Astronomy and Astrophysics, volume 352399-405 (1999/12-2)

The dwarf spheroidal galaxy DDO 44: stellar populations and distance.

KARACHENTSEV I.D., SHARINA M.E., GREBEL E.K., DOLPHIN A.E., GEISLER D., GUHATHAKURTA P., HODGE P.W., KARACHENTSEVA V.E., SARAJEDINI A. and SEITZER P.

Abstract (from CDS):

We have ground-based and HST WFPC2 imaging of the nearby low surface brightness dwarf spheroidal galaxy DDO 44. For the first time DDO 44 was resolved into stars. The resulting color-magnitude diagram for about 1290 stars show the red giant branch with a tip at I=23.55±0.15, which yields the distance DMW=3.2±0.2Mpc consistent with membership of DDO 44 in the NGC 2403 group. The linear separation of DDO 44 from NGC 2403 is 75kpc on the sky and 30±450kpc along the line of sight. The relationship between the dwarf galaxy's absolute magnitude, MR°=-13.1, the central surface brightness, µR(0)=24.1mag/arcsec2, and the mean metallicity, [Fe/H]=-1.7dex follow the trend for other nearby dwarf spheroidal galaxies. One globular cluster candidate has also been identified in DDO 44.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - galaxies: fundamental parameters - galaxies: individual: DDO 44 - galaxies: photometry - galaxies: abundances

Simbad objects: 14

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Number of rows : 14
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 588 3
5 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
6 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 93 0
7 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
8 NAME NGC 2403 Group GrG 07 36.9 +65 36           ~ 22 0
9 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
10 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
11 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
12 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
13 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
14 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1

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