2007ApJ...654..186F

Query : 2007ApJ...654..186F

2007ApJ...654..186F - Astrophys. J., 654, 186-218 (2007/January-1)

The discovery of Cepheids and a distance to NGC 5128.

FERRARESE L., MOULD J.R., STETSON P.B., TONRY J.L., BLAKESLEE J.P. and AJHAR E.A.

Abstract (from CDS):

We discuss a new distance to NGC 5128 (Centaurus A) based on Cepheid variables observed with the Hubble Space Telescope. Twelve F555W (V) and six F814W (I) epochs of cosmic-ray-split WFPC2 observations were obtained. A total of 56 bona fide Cepheids were discovered, with periods ranging from 5 to ∼50 days; five of these are likely Population II Cepheids of the W Virginis class, associated with the bulge or halo of NGC 5128. Based on the period and V- and I-band luminosities of a subsample of 42 classical (Population I) Cepheids, and adopting an LMC distance modulus and extinction of 18.50±0.10 mag and E(B-V)=0.10 mag, respectively, the true reddening-corrected distance modulus to NGC 5128 is µ0=27.67±0.12 (random)±0.16 (systematic) mag, corresponding to a distance of 3.42±0.18 (random)±0.25 (systematic) Mpc. The random uncertainty in the distance is dominated by the error on the assumed value for the ratio of total to selective absorption, RV, in NGC 5128, and by the possible metallicity dependence of the Cepheid period-luminosity relation at V and I. This represents the first determination of a Cepheid distance to an early-type galaxy.

Abstract Copyright: ∼

Journal keyword(s): Stars: Variables: Cepheids - Cosmology: Distance Scale - Galaxies: Distances and Redshifts - Galaxies: Individual: NGC Number: NGC 5128

VizieR on-line data: <Available at CDS (J/ApJ/654/186): table1.dat table5.dat table8.dat table9.dat table10.dat table11.dat notes.dat>

Nomenclature: Table 5: [FMS2007] CNN (Nos C1-C56). Table 8: [FMS2007] PC xxx.x-yyy.y N=36, [FMS2007] WFN xxx.x-yyy.y N=140. Table 11: [FMS2007] VNN (Nos V1-V70).

Simbad objects: 141

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Number of rows : 141
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
4 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
5 NGC 4647 H2G 12 43 32.542 +11 34 56.89   12.5 12.5     ~ 423 1
6 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
7 [FMS2007] C41 Ce* 13 25 08.370 -42 59 28.69     23.67   22.33 ~ 1 0
8 [FMS2007] C22 Ce* 13 25 08.390 -42 59 12.20     23.76   22.58 ~ 1 0
9 [FMS2007] V54 V* 13 25 08.418 -42 59 14.95     25.34   24.15 ~ 1 0
10 [FMS2007] V27 V* 13 25 08.586 -42 59 17.05     24.53   23.45 ~ 1 0
11 [FMS2007] V56 V* 13 25 09.407 -42 59 09.75     24.64   23.61 ~ 1 0
12 [FMS2007] C 4 Ce* 13 25 09.448 -42 59 19.04     23.94   23.18 ~ 1 0
13 [FMS2007] C 7 Ce* 13 25 09.578 -42 59 19.68     23.99   22.94 ~ 1 0
14 [FMS2007] V20 V* 13 25 09.717 -42 59 25.67     24.73   23.59 ~ 1 0
15 [FMS2007] V49 V* 13 25 09.809 -43 00 32.22     25.16   23.76 ~ 1 0
16 [FMS2007] V57 V* 13 25 10.462 -43 00 44.99     24.28   22.19 ~ 1 0
17 [FMS2007] C27 Ce* 13 25 10.736 -43 00 22.13     24.74   23.24 ~ 1 0
18 [FMS2007] C44 Ce* 13 25 10.838 -42 59 33.94     24.26   22.24 ~ 1 0
19 [FMS2007] C23 Ce* 13 25 10.845 -42 59 28.62     25.03   23.15 ~ 1 0
20 [FMS2007] C25 Ce* 13 25 10.924 -43 00 23.27     24.73   22.97 ~ 1 0
21 [FMS2007] V61 V* 13 25 10.940 -43 01 02.33     24.17   23.10 ~ 1 0
22 [FMS2007] V64 V* 13 25 11.023 -43 01 08.09     25.73   23.49 ~ 1 0
23 [FMS2007] V11 V* 13 25 11.113 -42 59 13.50     24.20   23.30 ~ 1 0
24 [FMS2007] C31 Ce* 13 25 11.230 -42 59 17.66     23.57   22.44 ~ 1 0
25 [FMS2007] V34 V* 13 25 11.421 -42 59 45.62     25.74   23.74 ~ 1 0
26 [FMS2007] C51 Ce* 13 25 11.648 -42 59 05.80     25.11   22.92 ~ 1 0
27 [FMS2007] C29 Ce* 13 25 11.667 -43 00 46.11     23.94   22.45 ~ 1 0
28 [FMS2007] C40 Ce* 13 25 12.024 -42 59 11.23     23.35   22.28 ~ 1 0
29 [FMS2007] V62 V* 13 25 12.095 -42 59 42.95     25.13   22.88 ~ 1 0
30 [FMS2007] C38 Ce* 13 25 12.113 -42 59 04.46     23.27   22.22 ~ 1 0
31 [FMS2007] C32 Ce* 13 25 12.191 -43 00 02.65     24.05   22.62 ~ 1 0
32 [FMS2007] V60 V* 13 25 12.415 -42 59 15.86     23.66   23.17 ~ 1 0
33 [FMS2007] V32 V* 13 25 12.623 -42 59 18.20     23.96   23.05 ~ 1 0
34 [FMS2007] C52 Ce* 13 25 12.669 -43 00 39.25     25.06   24.05 ~ 1 0
35 [FMS2007] V4 V* 13 25 12.689 -42 59 07.93     24.32   23.55 ~ 1 0
36 [FMS2007] V66 V* 13 25 12.689 -42 59 32.93     26.03   23.02 ~ 1 0
37 [FMS2007] V65 V* 13 25 12.870 -42 59 53.21     25.75   23.14 ~ 1 0
38 [FMS2007] V42 V* 13 25 12.941 -42 59 58.92     25.33   23.24 ~ 1 0
39 [FMS2007] V35 V* 13 25 12.993 -43 00 24.68     25.08   23.30 ~ 1 0
40 [FMS2007] V55 V* 13 25 13.011 -43 01 04.31     25.48   23.66 ~ 1 0
41 [FMS2007] C45 Ce* 13 25 13.095 -42 59 33.41     23.74   21.92 ~ 1 0
42 [FMS2007] C 9 Ce* 13 25 13.184 -43 01 22.05     24.16   22.94 ~ 1 0
43 [FMS2007] V52 V* 13 25 13.191 -43 01 21.27     24.64   23.58 ~ 1 0
44 [FMS2007] V28 V* 13 25 13.429 -42 59 06.44     23.76   23.12 ~ 1 0
45 [FMS2007] C50 Ce* 13 25 13.495 -43 00 30.28     24.32   23.32 ~ 1 0
46 [FMS2007] C 1 Ce* 13 25 13.534 -43 00 17.05     25.14   24.12 ~ 1 0
47 [FMS2007] V15 V* 13 25 13.647 -42 59 32.38     24.51   22.16 ~ 1 0
48 [FMS2007] C 3 Ce* 13 25 13.659 -42 59 04.99     24.12   23.45 ~ 1 0
49 [FMS2007] C43 Ce* 13 25 13.761 -42 59 49.21     24.77   24.02 ~ 3 0
50 [FMS2007] V58 V* 13 25 13.773 -42 59 02.08     24.25   22.85 ~ 1 0
51 [FMS2007] C11 Ce* 13 25 13.827 -42 59 11.10     23.84   23.01 ~ 1 0
52 [FMS2007] V33 V* 13 25 13.840 -42 59 08.47     24.58   23.81 ~ 1 0
53 [FMS2007] C24 Ce* 13 25 13.922 -43 00 18.39     23.91   22.80 ~ 1 0
54 [FMS2007] V38 V* 13 25 14.031 -42 59 06.17     23.83   22.67 ~ 1 0
55 [FMS2007] V68 V* 13 25 14.131 -42 59 42.02     25.59   23.15 ~ 1 0
56 [FMS2007] V51 V* 13 25 14.131 -42 59 01.04     23.04   21.93 ~ 1 0
57 [FMS2007] C39 Ce* 13 25 14.205 -42 59 15.00     23.32   22.22 ~ 1 0
58 [FMS2007] C 5 Ce* 13 25 14.224 -43 01 10.44     24.98   23.97 ~ 1 0
59 [FMS2007] C18 Ce* 13 25 14.227 -43 00 16.31     24.08   22.88 ~ 1 0
60 [FMS2007] V41 V* 13 25 14.359 -42 59 24.17     24.81   23.01 ~ 1 0
61 [FMS2007] C 2 Ce* 13 25 14.711 -43 00 26.29     24.61   23.46 ~ 1 0
62 [FMS2007] V3 V* 13 25 15.042 -42 59 03.10     24.40   23.14 ~ 1 0
63 [FMS2007] V22 V* 13 25 15.091 -42 59 06.74     24.28   23.50 ~ 1 0
64 [FMS2007] C34 Ce* 13 25 15.097 -42 59 43.83     24.59   22.86 ~ 1 0
65 [FMS2007] V8 V* 13 25 15.183 -43 00 10.38     24.39   23.09 ~ 1 0
66 [FMS2007] C42 Ce* 13 25 15.202 -42 59 18.55     23.34   22.14 ~ 1 0
67 [FMS2007] V67 V* 13 25 15.254 -43 00 27.48     23.23   23.30 ~ 1 0
68 [FMS2007] V23 V* 13 25 15.531 -42 59 05.93     24.26   23.45 ~ 1 0
69 [FMS2007] V21 V* 13 25 15.724 -43 00 38.06     24.30   23.11 ~ 1 0
70 [FMS2007] C17 Ce* 13 25 15.929 -42 59 16.53     23.64   22.61 ~ 1 0
71 [FMS2007] C48 Ce* 13 25 15.967 -43 00 46.62     24.44   22.42 ~ 1 0
72 [FMS2007] C46 Ce* 13 25 15.981 -43 00 43.99     24.43   22.33 ~ 1 0
73 [FMS2007] C49 Ce* 13 25 16.166 -42 59 55.92     23.12   21.70 ~ 1 0
74 [FMS2007] V63 V* 13 25 16.258 -42 59 08.39     24.36   22.54 ~ 1 0
75 [FMS2007] V12 V* 13 25 16.316 -42 59 10.07     24.64   23.64 ~ 1 0
76 [FMS2007] V70 V* 13 25 16.326 -42 59 29.15     24.36   22.11 ~ 1 0
77 [FMS2007] C26 Ce* 13 25 16.346 -42 59 13.00     23.35   22.36 ~ 1 0
78 [FMS2007] V16 V* 13 25 16.427 -42 59 21.67     23.82   23.60 ~ 1 0
79 [FMS2007] V50 V* 13 25 16.455 -43 00 12.82     25.06   24.13 ~ 1 0
80 [FMS2007] V36 V* 13 25 16.786 -43 00 02.39     25.01   23.74 ~ 1 0
81 [FMS2007] V17 V* 13 25 16.861 -42 59 16.64     24.34   23.15 ~ 1 0
82 [FMS2007] C33 Ce* 13 25 17.005 -43 01 07.04     23.38   22.27 ~ 1 0
83 [FMS2007] C36 Ce* 13 25 17.050 -42 59 14.13     23.01   22.10 ~ 1 0
84 [FMS2007] V37 V* 13 25 17.443 -42 59 23.22     24.07   23.17 ~ 1 0
85 [FMS2007] V6 V* 13 25 17.458 -42 59 22.04     24.26   23.05 ~ 1 0
86 [FMS2007] C15 Ce* 13 25 17.778 -43 00 08.44     24.64   23.22 ~ 1 0
87 [FMS2007] C47 Ce* 13 25 17.804 -43 00 09.32     23.37   21.59 ~ 1 0
88 [FMS2007] V1 V* 13 25 17.853 -43 00 11.30     25.76   24.45 ~ 1 0
89 [FMS2007] V29 V* 13 25 17.866 -42 59 28.45     24.62   23.52 ~ 1 0
90 [FMS2007] C37 Ce* 13 25 17.875 -42 59 17.31     22.98   21.77 ~ 1 0
91 [FMS2007] V53 V* 13 25 17.878 -42 59 44.53     25.22   22.79 ~ 1 0
92 [FMS2007] V13 V* 13 25 17.928 -43 00 05.74     25.14   23.97 ~ 1 0
93 [FMS2007] C54 Ce* 13 25 17.968 -43 00 24.26     23.59   22.70 ~ 1 0
94 [FMS2007] V40 V* 13 25 17.973 -42 59 17.61     23.79   22.76 ~ 1 0
95 [FMS2007] C 6 Ce* 13 25 18.163 -43 00 11.80     24.86   23.66 ~ 1 0
96 [FMS2007] C16 Ce* 13 25 18.171 -42 59 16.66     23.27   22.40 ~ 1 0
97 [FMS2007] C53 Ce* 13 25 18.1949852976 -42 59 04.488489492     22.27   21.34 ~ 1 0
98 [FMS2007] V7 V* 13 25 18.227 -42 59 15.45     24.17   23.23 ~ 1 0
99 [FMS2007] V45 V* 13 25 18.292 -43 00 19.25     25.71   23.31 ~ 1 0
100 [FMS2007] V30 V* 13 25 18.297 -42 59 21.45     24.18   23.81 ~ 1 0
101 [FMS2007] V31 V* 13 25 18.402 -42 59 22.85     24.32   22.99 ~ 1 0
102 [FMS2007] V10 V* 13 25 18.457 -43 00 07.82     25.36   24.02 ~ 1 0
103 [FMS2007] C20 Ce* 13 25 18.462 -43 00 06.09     23.86   22.80 ~ 1 0
104 [FMS2007] C55 Ce* 13 25 18.496 -42 58 57.88     24.98   22.75 ~ 1 0
105 [FMS2007] V18 V* 13 25 18.510 -42 59 22.49     24.06   23.06 ~ 1 0
106 [FMS2007] C30 Ce* 13 25 18.533 -43 00 07.39     24.21   22.81 ~ 1 0
107 [FMS2007] C35 Ce* 13 25 18.565 -43 00 00.84     24.93   22.89 ~ 1 0
108 [FMS2007] C 8 Ce* 13 25 18.589 -43 00 23.32     24.93   23.38 ~ 1 0
109 [FMS2007] V39 V* 13 25 18.622 -42 59 24.15     23.77   22.97 ~ 1 0
110 [FMS2007] V47 V* 13 25 18.722 -43 00 13.63     25.15   23.28 ~ 1 0
111 [FMS2007] C12 Ce* 13 25 18.802 -42 59 13.22     23.60   22.70 ~ 1 0
112 [FMS2007] C13 Ce* 13 25 18.945 -43 00 15.57     25.43   23.54 ~ 1 0
113 [FMS2007] V14 V* 13 25 19.041 -42 59 23.29     23.77   22.98 ~ 1 0
114 [FMS2007] V26 V* 13 25 19.084 -42 59 08.88     24.20   23.38 ~ 1 0
115 [FMS2007] V19 V* 13 25 19.263 -42 59 22.88     24.05   23.02 ~ 1 0
116 [FMS2007] V43 V* 13 25 19.359 -42 59 23.67     23.69   22.58 ~ 1 0
117 [FMS2007] C10 Ce* 13 25 19.519 -42 59 14.54     23.98   22.95 ~ 1 0
118 [FMS2007] V5 V* 13 25 19.665 -42 59 16.90     24.39   22.95 ~ 1 0
119 [FMS2007] V24 V* 13 25 19.788 -42 59 17.34     24.10   23.13 ~ 1 0
120 [FMS2007] C14 Ce* 13 25 19.794 -42 59 23.31     23.99   22.93 ~ 1 0
121 [FMS2007] V46 V* 13 25 19.870 -42 59 30.08     23.83   22.83 ~ 1 0
122 [FMS2007] V44 V* 13 25 19.880 -42 59 30.36     23.56   22.60 ~ 1 0
123 [FMS2007] C21 Ce* 13 25 19.990 -42 59 20.85     23.73   22.80 ~ 1 0
124 [FMS2007] V69 V* 13 25 20.066 -42 59 24.67     23.39   23.02 ~ 1 0
125 [FMS2007] C56 Ce* 13 25 20.163 -42 58 53.25     24.11   22.88 ~ 1 0
126 [FMS2007] V48 V* 13 25 20.195 -42 59 35.23     23.56   22.51 ~ 1 0
127 [FMS2007] V2 V* 13 25 20.198 -42 59 29.75     23.62   22.76 ~ 1 0
128 [FMS2007] V25 V* 13 25 20.643 -42 59 21.56     23.94   22.94 ~ 1 0
129 [FMS2007] V9 V* 13 25 21.170 -42 59 24.26     24.29   23.88 ~ 1 0
130 [FMS2007] C28 Ce* 13 25 21.260 -42 59 08.25     23.71   22.62 ~ 1 0
131 [FMS2007] V59 V* 13 25 21.343 -42 59 15.04     25.08   23.62 ~ 1 0
132 [FMS2007] C19 Ce* 13 25 21.524 -42 59 21.32     23.41   22.36 ~ 1 0
133 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
134 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
135 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
136 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
137 SN 1972E SN* 13 39 52.7 -31 40 09   8.49 8.30     SNIa 309 1
138 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
139 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
140 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
141 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0

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