Distances of the Local Group member galaxies (original) (raw)

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Distances of the Local Group member galaxies, from various sources

The distances of the member galaxies of the Local Group are often not very wellknown. The following table gives values from various sources, in thousands of lightyears (kly; e.g., in our database, M31 is 2.9 million light years, thus 2900 times 1000 light years distant):

Galaxy Ours Hu36 SC20 Kauf RASC LGAA TP GL vdB94 Cam vdB00 Mateo Vi03

WLM 4200 5200 2850 3100 2000 3064 3065 3100 3015 * IC 10 4200: ? 4200 4100 2850 4000 4075 4075 2150 2690 2690 Cet Dw 3000: 2530 2540 * NGC 147 2400: 2380 2000 2000 2150 2000 2200 2150 1920 2150 2365 2365 And III 2900: 2380 2250 2380 2200 2360 2575 2480 2480 2480 NGC 185 2500: 2380 2000 2380 2150 1860 2200 2020 2020 2150 2020 2020 M110 2900 680 2380 2250 2380 2100 2500 2200 2360 2360 2480 2655 2660 And IV 2900: 2380 (2360) (2480) M32 2900 680 2380 2250 2380 2150 2500 2200 2360 2360 2480 2625 2625 M31 2900 680 2380 2250 2380 2180 2500 2200 2360 2360 2480 2510 2650 And I 2900: 2380 2250 2580 2200 2360 2575 2640 2625 2625 SMC 210 95 195 190 195 210 195 300 189 189 196 189 210 Scl dw 300: 280 270 280 280 360 200 254 254 293 258 258 LGS 3, Psc dw 3000: 2900 2380 3000 2480 2480 2640 2640 2640 IC1613 2900: 900 2400 2100 2410 2410 2400 2500 2495 2495 2350 2280 * And V 2900: 2640 2640 2640 And II 2900: 2380 2250 2380 2200 2360 1915 2220 1710 1710 M33 3000 720 2930 2350 2180 2380 3600 2500 2590 2590 2580 2740 2850 Phe dw 1600: 1270 1270 1300 1450 1450 For dw 530: 420 650 420 550 420 500 427 427 456 450 450 UGCA 86 2050 5900
UGCA 92 3000: 11400 6500 4240 4240 LMC 179 85 165 170 165 165 175 200 160 160 163 160 170 Car dw 300: 550 500 550 280 300 284 284 326 329 329 CMA dw 25
Leo A 7000: 7500 3600 5200 5000 7500 7500 2250 2250 2250 Sex B 4000: 4200 4240 4385 * NGC 3109 4100: 3900 4110 4075 * Ant dw 4100: 3750 4025 * Leo I 880: 750 700 750 750 750 600 890 880 820 815 815 Sex A 4000: 3300 4200 4240 4695 * Sex dw 300: 280 280 300 257 293 293 280 280 Leo II 800: 750 700 750 750 750 600 700 750 685 668 669 GR 8 5000: 3260 4000 3900 6500 5180 * UMi dw 240: 240 220 240 220 220 330 205 225 196 215 215 Dra dw 280 260 220 260 220 240 300 248 248 260 267 267 Milky Way 28 28 26 26 26 SagDEG 88 78 97 78 78 Sgr dw, SagDIG 4200 3600 4000 3600 3750 3850 3455 3460 N6822 1700: 530 1700 1630 1700 1530 2020 1700 1760 1760 1630 1595 1600 Aqr dw 2000: 4900 3000 2600 2900 3100 2610 2610 IC5152 3000: 4900 4900 2000 5200 5200 5180 * Tuc dw 3000: 950 2930 2840 2870 * UKS2323-326 4500: 4200 4200 4305 * And VII 2900: 2480 2250 2250 Peg dw 6000: 4200 5500 5000 5700 5870 2480 3115 * And VI 2900: 2530 2540 2540

Nearby probable non-members:

SDIG 6500
NGC 55 7000 4825 NGC 404 8000:
Maffei 1 10000: 11400
Maffei 2 10000: IC 342 10000: ? Cam A 6500 NGC 1569 7500 7500 NGC 1560 7500 7500 Argo dw 12000: 11400 NGC 5237 11400
DDO 187 14300
NGC 6946 10000: ? 2318-42

Sources:

Ours

The value used in our database

SC20

A. Hirshfeld and R.W. Sinnott, Sky Catalogue 2000.0, Sky Publishing 1985

Kauf

William J. Kaufmann III, Universe, Freeman 1987 (2nd ed), p. 514. Also lists Maffei 1 at 3.3 million light years.

RASC

RASC Observer's Handbook

LGAA

Le Grand Atlas de L'Astronomie, Encyclopedia Universalis, 1986. German edition: "Der große JRO Atlas der Astronomie"

TP

Tom Polakis, Observing Galaxies in the Local Group. Deep Sky, No. 36, p. 12. Reprinted in: David J. Eichler (ed.), Galaxies and the Universe, Kalmbach 1992.

GL

George Lake, Cosmology of the Local Group.

Cam

Cambridge Group of Mike Irwin

vdB94

Sidney van den Bergh, The Outer Fringes of the Local Group, AJ 107 (4): 1328-1332 (April 1994)

vdB00

Sidney van den Bergh, Updated Information on the Local Group, PASP 112 (770): 529-536 (April 2000)

Vi03

Ray Villard, The Local Group: Order out of Chaos. Astronomy, Vol. 31, No. 11, p. 38-43 (Nov 2003).

Hartmut Frommert
Christine Kronberg
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Last Modification: November 1, 2004