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4. SUMMARY OF PNLF DISTANCES

Table 1 summarizes the available PNLF distances. Distances are referenced to a zero-point based on M31 having a distance of 710 kpc and a reddening of E(B - V) = 0.11. This is the baseline zero-point used in all our papers. To place these distances on the recent scale where the distance to M31 is 770 kpc (Freedman & Madore (1990)) and E(B - V) = 0.08, all distances should be increased by 0.06 mag (3%).

Table 1. All distances must be increased by 0.06 mag to be placed on the recent M31 Cepheid scale of Freedman & Madore (1990). A metallicity correction (Ciardullo & Jacoby 1992) has been applied to NGC 5253 only, because it has SMC-like abundances.
Galaxy Type Nr. PN (m-M)0 Reference
Local Group
LMC SBm 42 18.44 ± 0.18 Jacoby, Walker, & Ciardullo (1990)
SMC Im 8 19.09 ± 0.29 Jacoby, Walker, & Ciardullo (1990)
185 dE3p 4 ... Ciardullo et al. (1989)
205 S0/E5p 12 24.68 ± 0.35 Ciardullo et al. (1989)
221 E2 9 24.58 ± 0.60 Ciardullo et al. (1989)
224 Sb 104 24.26 ± 0.04 Ciardullo et al. (1989)
 
NGC 1023 Group
891 Sb 34 29.97 ± 0.16 Ciardullo, Jacoby, & Harris (1991)
1023 SB0 97 29.97 ± 0.14 Ciardullo, Jacoby, & Harris (1991)
 
Fornax Cluster
1316 S0p 58 31.13 ± 0.07 McMillan, Ciardullo, & Jacoby (1993)
1399 E1 37 31.17 ± 0.08 McMillan, Ciardullo, & Jacoby (1993)
1404 E2 19 31.15 ± 0.10 McMillan, Ciardullo, & Jacoby (1993)
 
Leo I Group
3377 E6 22 30.07 ± 0.17 Ciardullo, Jacoby, & Ford (1989)
3379 E0 45 29.96 ± 0.16 Ciardullo, Jacoby, & Ford (1989)
3384 SB0 43 30.03 ± 0.16 Ciardullo, Jacoby, & Ford (1989)
3368 Sab 25 29.91 ± 0.15 Feldmeier, Ciardullo, & Jacoby (1997)
 
Virgo Cluster
4374 E1 37 30.98 ± 0.18 Jacoby, Ciardullo, & Ford (1990)
4382 S0 59 30.79 ± 0.17 Jacoby, Ciardullo, & Ford (1990)
4406 S0/E3 59 30.98 ± 0.17 Jacoby, Ciardullo, & Ford (1990)
4472 E1/S0 26 30.71 ± 0.19 Jacoby, Ciardullo, & Ford (1990)
4486 E0 201 30.73 ± 0.19 this paper
4649 S0 16 30.76 ± 0.19 Jacoby, Ciardullo, & Ford (1990)
 
Coma I Group
4278 E1 23 30.04 ± 0.18 Jacoby, Ciardullo, & Harris (1996)
4494 E1 101 30.54 ± 0.14 Jacoby, Ciardullo, & Harris (1996)
4565 Sb 17 30.12 ± 0.17 Jacoby, Ciardullo, & Harris (1996)
 
NGC 5128 Group
5102 S0p 19 27.47 ± 0.22 McMillan, Ciardullo, & Jacoby (1994)
5128 S0p 224 27.73 ± 0.04 Hui et al. 1993
5253 Amorph 16 27.80 ± 0.29 Phillips et al. (1992)
 
Other
Bulge Sbc 22 14.54 ± 0.20 Pottasch (1990)
300 Sc 10 26.78 ± 0.40 Soffner et al. (1996)
3031 Sb 88 27.72 ± 0.25 Jacoby et al. (1989)
3109 Sm 7 26.03 ± 0.30 Richer & McCall (1992)
3115 S0 52 30.11 ± 0.20 Ciardullo, Jacoby, & Tonry (1993)
4594 Sa 204 29.76 ± 0.13 Ford et al. (1996)
5194 / 5 Sbc/SB0 38 29.56 ± 0.15 Feldmeier, Ciardullo, & Jacoby (1997)
5457 Sc 27 29.36 ± 0.15 Feldmeier, Ciardullo, & Jacoby (1997)

Ten galaxies of the 34 in this list are obvious spirals. Six more have a significant late-type component for which Cepheid distances either exist already or could be determined.

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