1999ApJ...512...48G

Query : 1999ApJ...512...48G

1999ApJ...512...48G - Astrophys. J., 512, 48-64 (1999/February-2)

The Hubble Space Telescope key project on the extragalactic distance scale. XVII. The Cepheid distance to NGC 4725.

GIBSON B.K., HUGHES S.M.G., STETSON P.B., FREEDMAN W.L., KENNICUTT R.C.Jr, MOULD J.R., BRESOLIN F., FERRARESE L., FORD H.C., GRAHAM J.A., HAN M., HARDING P., HOESSEL J.G., HUCHRA J.P., ILLINGWORTH G.D., KELSON D.D., MACRI L.M., MADORE B.F., PHELPS R.L., PROSSER C.F., SAHA A., SAKAI S., SEBO K.M., SILBERMANN N.A. and TURNER A.M.

Abstract (from CDS):

The distance to NGC 4725 has been derived from Cepheid variables as part of the Hubble Space Telescope Key Project on the Extragalactic Distance Scale. Thirteen F555W (V) and four F814W (I) epochs of cosmic-ray-split Wide Field and Planetary Camera 2 observations were obtained. Twenty Cepheids were discovered, with periods ranging from 12 to 49 days. Adopting a Large Magellanic Cloud distance modulus and extinction of 18.50±0.10 mag and E(V-I)=0.13 mag, respectively, a true reddening-corrected distance modulus (based on an analysis employing the ALLFRAME software package) of 30.50±0.16(random)±0.17(systematic) mag was determined for NGC 4725. The corresponding of distance of 12.6±1.0(random)±1.0(systematic) Mpc is in excellent agreement with that found with an independent analysis based upon the DoPHOT photometry package. With a foreground reddening of only E(V-I)=0.02, the inferred intrinsic reddening of this field in NGC 4725, E(V-I)=0.19, makes it one of the most highly reddened fields encountered by the HST Key Project to date.

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Journal keyword(s): Stars: Variables: Cepheids - Cosmology: Distance Scale - Galaxies: Distances and Redshifts - Galaxies: Individual: NGC Number: NGC 4725

VizieR on-line data: <Available at CDS (J/ApJ/512/48): table4.dat table5.dat table6a.dat table6b.dat>

Nomenclature: Table 2: [GHS99] RNN (Nos R1-R45). Table 4: [GHS99] CNN (Nos C1-C20).

Simbad objects: 80

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Number of rows : 80
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 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
4 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
5 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
6 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 862 1
7 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
8 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
9 NAME Coma I Group GrG 12 22 19.4 +29 53 47           ~ 112 0
10 NGC 4725 Sy2 12 50 26.5716367992 +25 30 02.733090588   13.45 12.44     ~ 727 2
11 [GHS99] R17 * 12 50 32.22 +25 32 23.0           ~ 1 0
12 [GHS99] R15 * 12 50 32.25 +25 32 19.7           ~ 1 0
13 [GHS99] R16 * 12 50 32.31 +25 32 38.0           ~ 1 0
14 [GHS99] R14 * 12 50 32.51 +25 32 39.2           ~ 1 0
15 [GHS99] C12 Ce* 12 50 32.55 +25 32 47.3           ~ 2 0
16 [GHS99] C15 Ce* 12 50 32.76 +25 33 34.8           ~ 1 0
17 [GHS99] C10 Ce* 12 50 32.78 +25 32 00.2           ~ 2 0
18 [GHS99] R13 * 12 50 32.78 +25 32 48.6           ~ 1 0
19 [GHS99] C11 Ce* 12 50 32.79 +25 32 10.2           ~ 2 0
20 [GHS99] R21 * 12 50 32.87 +25 33 14.3           ~ 1 0
21 [GHS99] R23 * 12 50 32.88 +25 33 22.6           ~ 1 0
22 [GHS99] R12 * 12 50 32.92 +25 32 48.2           ~ 1 0
23 SN 1940B SN* 12 50 33 +25 32.2   13.1 12.8     SNIIP 39 1
24 [GHS99] C9 Ce* 12 50 33.12 +25 32 38.0           ~ 2 0
25 [GHS99] R29 * 12 50 33.43 +25 33 56.1           ~ 1 0
26 [GHS99] R11 * 12 50 33.44 +25 32 45.5           ~ 1 0
27 [GHS99] C8 ? 12 50 33.54 +25 32 46.9           ~ 2 0
28 [GHS99] R10 * 12 50 33.77 +25 32 14.3           ~ 1 0
29 [GHS99] C7 Ce* 12 50 33.85 +25 32 39.5           ~ 2 0
30 [GHS99] R25 * 12 50 33.85 +25 33 35.9           ~ 1 0
31 [GHS99] R30 * 12 50 34.27 +25 34 02.2           ~ 1 0
32 [GHS99] R19 * 12 50 34.29 +25 33 09.5           ~ 1 0
33 [GHS99] R28 * 12 50 34.30 +25 33 42.2           ~ 1 0
34 [GHS99] R20 * 12 50 34.31 +25 33 12.3           ~ 1 0
35 [GHS99] C6 Ce* 12 50 34.38 +25 31 47.5           ~ 2 0
36 [GHS99] R9 * 12 50 34.39 +25 31 51.9           ~ 1 0
37 [GHS99] R26 * 12 50 34.40 +25 33 39.7           ~ 1 0
38 [GHS99] R7 * 12 50 34.41 +25 31 35.9           ~ 1 0
39 [GHS99] R8 Ce* 12 50 34.47 +25 31 53.7           ~ 1 0
40 [GHS99] C4 Ce* 12 50 34.57 +25 31 51.9           ~ 2 0
41 [GHS99] C5 Ce* 12 50 34.60 +25 31 58.9           ~ 2 0
42 [GHS99] R18 * 12 50 34.77 +25 33 07.4           ~ 1 0
43 [GHS99] R27 * 12 50 34.86 +25 33 39.5           ~ 1 0
44 [GHS99] R4 * 12 50 34.96 +25 31 46.0           ~ 1 0
45 [GHS99] R6 * 12 50 34.96 +25 32 39.3           ~ 1 0
46 [GHS99] C14 Ce* 12 50 35.08 +25 33 26.5           ~ 1 0
47 [GHS99] R5 * 12 50 35.18 +25 32 38.6           ~ 1 0
48 [GHS99] R3 * 12 50 35.25 +25 32 08.9           ~ 1 0
49 [GHS99] C3 Ce* 12 50 35.32 +25 32 01.7           ~ 1 0
50 [GHS99] C2 Ce* 12 50 35.42 +25 31 56.9           ~ 1 0
51 [GHS99] R1 * 12 50 35.44 +25 31 41.8           ~ 1 0
52 [GHS99] R24 * 12 50 35.77 +25 33 33.1           ~ 1 0
53 [GHS99] R2 * 12 50 35.78 +25 32 42.7           ~ 1 0
54 [GHS99] R22 * 12 50 36.24 +25 33 11.8           ~ 1 0
55 [GHS99] C1 Ce* 12 50 36.33 +25 31 53.5           ~ 2 0
56 [GHS99] C13 Ce* 12 50 36.83 +25 33 05.5           ~ 2 0
57 [GHS99] R31 * 12 50 38.04 +25 33 02.1           ~ 1 0
58 [GHS99] C16 Ce* 12 50 38.59 +25 32 53.8           ~ 2 0
59 [GHS99] R33 * 12 50 38.75 +25 33 06.3           ~ 1 0
60 [GHS99] R32 * 12 50 38.77 +25 33 18.9           ~ 1 0
61 [GHS99] R34 * 12 50 39.13 +25 33 19.1           ~ 1 0
62 [GHS99] C17 Ce* 12 50 39.27 +25 33 48.3           ~ 2 0
63 [GHS99] C18 Ce* 12 50 39.43 +25 33 51.7           ~ 2 0
64 [GHS99] R35 * 12 50 39.55 +25 33 43.7           ~ 1 0
65 [GHS99] C19 Ce* 12 50 39.60 +25 33 28.2           ~ 2 0
66 [GHS99] R36 * 12 50 39.93 +25 33 58.3           ~ 1 0
67 [GHS99] R37 * 12 50 39.99 +25 33 42.2           ~ 1 0
68 [GHS99] C20 Ce* 12 50 40.30 +25 33 48.8           ~ 1 0
69 [GHS99] R39 * 12 50 40.78 +25 32 53.8           ~ 1 0
70 [GHS99] R40 * 12 50 40.94 +25 32 57.6           ~ 1 0
71 [GHS99] R41 * 12 50 41.07 +25 33 13.7           ~ 1 0
72 [GHS99] R42 * 12 50 41.10 +25 33 05.8           ~ 1 0
73 [GHS99] R38 * 12 50 41.12 +25 33 27.0           ~ 1 0
74 [GHS99] R43 * 12 50 41.90 +25 33 05.7           ~ 1 0
75 [GHS99] R44 * 12 50 42.06 +25 33 21.7           ~ 1 0
76 [GHS99] R45 * 12 50 42.15 +25 33 06.2           ~ 1 0
77 NGC 4747 GiP 12 51 45.592 +25 46 30.12   13.2       ~ 178 1
78 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1284 2
79 NAME Coma II Group GrG ~ ~           ~ 7 0
80 NAME Com-Scl Cloud Cld ~ ~           ~ 10 0

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