1999ApJ...514..614K

Query : 1999ApJ...514..614K

1999ApJ...514..614K - Astrophys. J., 514, 614-636 (1999/April-1)

The Hubble space telescope key project on the extragalactic distance scale. XIX. The discovery of cepheids in and a new distance to NGC 3198.

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

Abstract (from CDS):

We report the detection of Cepheid variable stars and a new distance to the Sc spiral NGC 3198. NGC 3198 is one of 25 galaxies that have been observed with the WFPC2 of the Hubble Space Telescope (HST) for the purpose of measuring Cepheid distances. Eighteen of these galaxies were targeted by the HST Key Project on the Extragalactic Distance Scale, whose objective is to calibrate a variety of secondary distant indicators and determine the Hubble constant to an accuracy of 10%. NGC 3198 was selected as part of this sample because its type and orientation make it very suitable as a Tully-Fisher calibrator. The WFPC2 data are comprised of 13 epochs in F555W (~V) and five epochs in F814W (~I). Two different crowded-field photometry packages (DAOPHOT/ALLFRAME and DoPHOT) were used. The magnitudes derived from these two packages agree to within a few percent. We identified 78 Cepheid candidates in the period range from eight to >50 days, of which 52 were selected for establishing the distance modulus. Period-luminosity relations were constructed in Johnson V and Kron-Cousins I by transforming the F555W and F814W to the standard system. We adopted a distance modulus of µ0=18.50±0.10 mag and mean reddening of E(B-V)= 0.10 mag to the Large Magellanic Cloud Cepheids and found a true distance modulus to NGC 3198 of µ0=30.80±0.16 (random)±0.12 (systematic) mag. This modulus corresponds to a distance of 14.5 Mpc, with random and systematic errors of ±1.2 and ±0.9 Mpc, respectively.

Abstract Copyright: ∼

Journal keyword(s): Stars: Variables: Cepheids - Galaxies: Distances and Redshifts - Galaxies: Individual: NGC Number: NGC 3198

VizieR on-line data: <Available at CDS (J/ApJ/514/614): table5.dat table6.dat tablea1.dat tablea2.dat>

Nomenclature: Table 4: [KIS99] JHHMMSS.ss-DDMMSS.ss N=62. Table 5: [KIS99] CNN (Nos C1-C78).

Simbad objects: 146

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Number of rows : 146
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 NGC 3104 AG? 10 03 57.185 +40 45 41.43   14.2       ~ 142 0
3 NGC 3180 GiG 10 18 16.985 +41 25 27.77   10.4       ~ 777 0
4 SN 1966J SN* 10 19 45 +45 30.2   11.2       SNIa 46 1
5 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 946 1
6 [KIS99] C71 Ce* 10 19 57.12 +45 33 27.7           ~ 1 0
7 [KIS99] J101957.51+453507.60 * 10 19 57.51 +45 35 07.6           ~ 1 0
8 [KIS99] J101957.67+453414.70 * 10 19 57.67 +45 34 14.7           ~ 1 0
9 [KIS99] C16 Ce* 10 19 57.80 +45 35 10.3           ~ 1 0
10 [KIS99] C17 Ce* 10 19 57.80 +45 35 15.6           ~ 1 0
11 [KIS99] J101957.83+453414.61 * 10 19 57.83 +45 34 14.6           ~ 1 0
12 [KIS99] J101957.85+453413.81 * 10 19 57.85 +45 34 13.8           ~ 1 0
13 [KIS99] J101957.89+453458.52 * 10 19 57.89 +45 34 58.5           ~ 1 0
14 [KIS99] J101957.93+453414.81 * 10 19 57.93 +45 34 14.8           ~ 1 0
15 [KIS99] C12 Ce* 10 19 58.00 +45 34 20.4           ~ 2 0
16 [KIS99] C76 Ce* 10 19 58.14 +45 33 22.3           ~ 1 0
17 [KIS99] J101958.20+453507.54 * 10 19 58.20 +45 35 07.5           ~ 1 0
18 [KIS99] J101958.40+453405.10 * 10 19 58.40 +45 34 05.1           ~ 1 0
19 [KIS99] J101958.41+453405.56 * 10 19 58.41 +45 34 05.6           ~ 1 0
20 [KIS99] J101958.46+453408.56 * 10 19 58.46 +45 34 08.6           ~ 1 0
21 [KIS99] C9 Ce* 10 19 58.49 +45 34 04.2           ~ 2 0
22 [KIS99] C13 Ce* 10 19 58.49 +45 34 31.3           ~ 1 0
23 [KIS99] J101958.64+453422.24 * 10 19 58.64 +45 34 22.2           ~ 1 0
24 [KIS99] J101958.66+453423.05 * 10 19 58.66 +45 34 23.0           ~ 1 0
25 [KIS99] C34 Ce* 10 19 58.90 +45 35 34.4           ~ 1 0
26 [KIS99] C33 Ce* 10 19 58.92 +45 35 23.7           ~ 2 0
27 [KIS99] C15 Ce* 10 19 58.97 +45 34 00.6           ~ 1 0
28 [KIS99] J101959.09+453512.88 * 10 19 59.09 +45 35 12.9           ~ 1 0
29 [KIS99] C10 Ce* 10 19 59.25 +45 34 20.2     24.97     ~ 3 0
30 [KIS99] J101959.31+453418.44 * 10 19 59.31 +45 34 18.4           ~ 1 0
31 [KIS99] J101959.41+453405.04 * 10 19 59.41 +45 34 05.0           ~ 1 0
32 [KIS99] J101959.43+453423.69 * 10 19 59.43 +45 34 23.7           ~ 1 0
33 [KIS99] C3 Ce* 10 19 59.60 +45 34 04.6     25.32     ~ 3 0
34 [KIS99] C14 Ce* 10 19 59.67 +45 34 01.9           ~ 1 0
35 [KIS99] C11 Ce* 10 19 59.68 +45 34 33.6           ~ 1 0
36 [KIS99] J101959.73+453412.95 * 10 19 59.73 +45 34 13.0           ~ 1 0
37 [KIS99] C66 Ce* 10 19 59.75 +45 33 37.9           ~ 1 0
38 [KIS99] C8 Ce* 10 19 59.76 +45 34 13.8           ~ 2 0
39 [KIS99] C4 Ce* 10 19 59.81 +45 34 07.6           ~ 1 0
40 [KIS99] J101959.82+453414.41 * 10 19 59.82 +45 34 14.4           ~ 1 0
41 [KIS99] J101959.88+453418.05 * 10 19 59.88 +45 34 18.1           ~ 1 0
42 [KIS99] J101959.92+453426.70 * 10 19 59.92 +45 34 26.7           ~ 1 0
43 [KIS99] J101959.93+453425.17 * 10 19 59.93 +45 34 25.2           ~ 1 0
44 [KIS99] C6 Ce* 10 19 59.96 +45 34 11.4     25.82     ~ 2 0
45 [KIS99] C1 Ce* 10 20 00.02 +45 34 05.2           ~ 2 0
46 [KIS99] J102000.15+453419.67 * 10 20 00.15 +45 34 19.7           ~ 1 0
47 [KIS99] C7 Ce* 10 20 00.23 +45 34 14.9           ~ 1 0
48 [KIS99] C67 Ce* 10 20 00.24 +45 33 15.5           ~ 2 0
49 [KIS99] C64 Ce* 10 20 00.24 +45 33 50.7           ~ 1 0
50 [KIS99] J102000.25+453414.69 * 10 20 00.25 +45 34 14.7           ~ 1 0
51 [KIS99] J102000.28+453412.42 * 10 20 00.28 +45 34 12.4           ~ 1 0
52 [KIS99] C68 Ce* 10 20 00.40 +45 33 13.1           ~ 2 0
53 [KIS99] C75 Ce* 10 20 00.45 +45 33 43.6           ~ 1 0
54 [KIS99] J102000.59+453410.91 * 10 20 00.59 +45 34 10.9           ~ 1 0
55 [KIS99] C69 Ce* 10 20 00.63 +45 33 10.2           ~ 1 0
56 [KIS99] J102000.66+453426.61 * 10 20 00.66 +45 34 26.6           ~ 1 0
57 [KIS99] J102000.71+453424.52 * 10 20 00.71 +45 34 24.5           ~ 1 0
58 [KIS99] C63 Ce* 10 20 00.81 +45 33 51.8           ~ 2 0
59 [KIS99] C2 Ce* 10 20 00.86 +45 34 18.0           ~ 2 0
60 [KIS99] C72 Ce* 10 20 00.91 +45 33 50.2           ~ 2 0
61 [KIS99] C21 Ce* 10 20 00.92 +45 35 24.7           ~ 1 0
62 [KIS99] C60 Ce* 10 20 00.94 +45 34 11.6           ~ 2 0
63 [KIS99] C5 Ce* 10 20 01.09 +45 34 21.8           ~ 2 0
64 [KIS99] C70 Ce* 10 20 01.27 +45 32 46.0           ~ 1 0
65 [KIS99] C32 Ce* 10 20 01.30 +45 35 23.3           ~ 1 0
66 [KIS99] C30 Ce* 10 20 01.40 +45 34 26.7           ~ 2 0
67 [KIS99] C29 Ce* 10 20 01.42 +45 35 17.8           ~ 2 0
68 [KIS99] C78 Ce* 10 20 01.47 +45 33 29.8           ~ 1 0
69 [KIS99] C77 Ce* 10 20 01.67 +45 34 04.4           ~ 1 0
70 [KIS99] J102001.70+453408.97 * 10 20 01.70 +45 34 09.0           ~ 1 0
71 [KIS99] J102001.75+453446.35 * 10 20 01.75 +45 34 46.4           ~ 1 0
72 [KIS99] J102001.78+453525.37 * 10 20 01.78 +45 35 25.4           ~ 1 0
73 [KIS99] J102001.87+453409.57 * 10 20 01.87 +45 34 09.6           ~ 1 0
74 [KIS99] J102002.05+453504.16 * 10 20 02.05 +45 35 04.2           ~ 1 0
75 [KIS99] J102002.14+453410.19 * 10 20 02.14 +45 34 10.2           ~ 1 0
76 [KIS99] J102002.14+453454.30 * 10 20 02.14 +45 34 54.3           ~ 1 0
77 [KIS99] J102002.16+453406.75 * 10 20 02.16 +45 34 06.8           ~ 1 0
78 [KIS99] J102002.20+453420.39 * 10 20 02.20 +45 34 20.4           ~ 1 0
79 [KIS99] J102002.25+453420.16 * 10 20 02.25 +45 34 20.2           ~ 1 0
80 [KIS99] C37 Ce* 10 20 02.43 +45 34 17.1           ~ 1 0
81 [KIS99] C24 Ce* 10 20 02.45 +45 35 23.6           ~ 2 0
82 [KIS99] C38 Ce* 10 20 02.48 +45 34 14.8           ~ 1 0
83 [KIS99] J102002.58+453536.11 * 10 20 02.58 +45 35 36.1           ~ 1 0
84 [KIS99] C19 Ce* 10 20 02.60 +45 34 57.2           ~ 1 0
85 [KIS99] C61 Ce* 10 20 02.65 +45 33 50.3           ~ 1 0
86 [KIS99] J102002.66+453406.93 * 10 20 02.66 +45 34 06.9           ~ 1 0
87 [KIS99] J102002.67+453538.48 * 10 20 02.67 +45 35 38.5           ~ 1 0
88 [KIS99] J102002.71+453532.40 * 10 20 02.71 +45 35 32.4           ~ 1 0
89 [KIS99] C53 Ce* 10 20 02.73 +45 34 14.6           ~ 2 0
90 [KIS99] C20 Ce* 10 20 02.75 +45 35 04.4           ~ 1 0
91 [KIS99] J102002.84+453426.99 * 10 20 02.84 +45 34 27.0           ~ 1 0
92 [KIS99] C27 Ce* 10 20 02.84 +45 35 03.9           ~ 2 0
93 [KIS99] C65 Ce* 10 20 02.88 +45 33 06.2           ~ 2 0
94 [KIS99] C18 Ce* 10 20 02.92 +45 34 48.5           ~ 2 0
95 [KIS99] C22 Ce* 10 20 02.93 +45 35 04.3           ~ 2 0
96 [KIS99] C23 Ce* 10 20 03.06 +45 35 26.7           ~ 1 0
97 [KIS99] J102003.17+453429.66 * 10 20 03.17 +45 34 29.7           ~ 1 0
98 [KIS99] J102003.22+453358.50 * 10 20 03.22 +45 33 58.5           ~ 1 0
99 [KIS99] J102003.25+453514.44 * 10 20 03.25 +45 35 14.4           ~ 1 0
100 [KIS99] C62 Ce* 10 20 03.26 +45 33 27.8           ~ 2 0
101 [KIS99] C54 Ce* 10 20 03.43 +45 34 14.6           ~ 2 0
102 [KIS99] J102003.50+453533.19 * 10 20 03.50 +45 35 33.2           ~ 1 0
103 [KIS99] C73 Ce* 10 20 03.59 +45 33 30.4           ~ 1 0
104 [KIS99] J102003.70+453538.30 * 10 20 03.70 +45 35 38.3           ~ 1 0
105 [KIS99] J102003.81+453525.74 * 10 20 03.81 +45 35 25.7           ~ 1 0
106 [KIS99] C74 Ce* 10 20 03.84 +45 33 09.0           ~ 2 0
107 [KIS99] C58 Ce* 10 20 03.88 +45 34 30.2           ~ 2 0
108 [KIS99] J102003.97+453451.70 * 10 20 03.97 +45 34 51.7           ~ 1 0
109 [KIS99] C51 Ce* 10 20 03.99 +45 34 20.6           ~ 2 0
110 [KIS99] J102004.00+453351.28 * 10 20 04.00 +45 33 51.3           ~ 1 0
111 [KIS99] J102004.01+453345.81 * 10 20 04.01 +45 33 45.8           ~ 1 0
112 [KIS99] J102004.08+453439.95 * 10 20 04.08 +45 34 40.0           ~ 1 0
113 [KIS99] C40 Ce* 10 20 04.09 +45 34 13.5           ~ 2 0
114 [KIS99] J102004.11+453529.65 * 10 20 04.11 +45 35 29.6           ~ 1 0
115 [KIS99] J102004.13+453451.26 * 10 20 04.13 +45 34 51.3           ~ 1 0
116 [KIS99] J102004.16+453455.16 * 10 20 04.16 +45 34 55.2           ~ 1 0
117 [KIS99] C25 Ce* 10 20 04.17 +45 35 33.6           ~ 1 0
118 [KIS99] J102004.20+453340.06 * 10 20 04.20 +45 33 40.1           ~ 1 0
119 [KIS99] J102004.21+453347.68 * 10 20 04.21 +45 33 47.7           ~ 1 0
120 [KIS99] C59 Ce* 10 20 04.25 +45 33 48.1           ~ 1 0
121 [KIS99] C31 Ce* 10 20 04.47 +45 35 11.3           ~ 1 0
122 [KIS99] C43 Ce* 10 20 04.74 +45 34 05.9           ~ 1 0
123 [KIS99] C28 Ce* 10 20 04.78 +45 35 28.9           ~ 1 0
124 [KIS99] J102004.80+453336.77 * 10 20 04.80 +45 33 36.8           ~ 1 0
125 [KIS99] C55 Ce* 10 20 04.93 +45 33 59.5           ~ 2 0
126 [KIS99] C39 Ce* 10 20 05.02 +45 34 38.1           ~ 1 0
127 [KIS99] J102005.08+453508.32 * 10 20 05.08 +45 35 08.3           ~ 1 0
128 [KIS99] C26 Ce* 10 20 05.16 +45 35 24.5           ~ 2 0
129 [KIS99] J102005.36+453520.10 * 10 20 05.36 +45 35 20.1           ~ 1 0
130 [KIS99] J102005.43+453515.48 * 10 20 05.43 +45 35 15.5           ~ 1 0
131 [KIS99] C36 Ce* 10 20 05.65 +45 34 58.7           ~ 2 0
132 [KIS99] C52 Ce* 10 20 05.68 +45 34 22.6           ~ 1 0
133 [KIS99] C41 Ce* 10 20 05.69 +45 34 29.6           ~ 2 0
134 [KIS99] C46 Ce* 10 20 05.76 +45 33 57.7           ~ 1 0
135 [KIS99] C35 Ce* 10 20 06.06 +45 35 03.3           ~ 1 0
136 [KIS99] C48 Ce* 10 20 06.46 +45 33 52.3           ~ 1 0
137 [KIS99] J102006.49+453507.38 * 10 20 06.49 +45 35 07.4           ~ 1 0
138 [KIS99] C42 Ce* 10 20 06.59 +45 34 33.7           ~ 2 0
139 [KIS99] C44 Ce* 10 20 07.31 +45 34 32.0           ~ 2 0
140 [KIS99] C50 Ce* 10 20 07.61 +45 34 01.3           ~ 1 0
141 [KIS99] C56 Ce* 10 20 07.77 +45 33 41.4           ~ 1 0
142 [KIS99] C47 Ce* 10 20 08.14 +45 34 13.9           ~ 2 0
143 [KIS99] C45 Ce* 10 20 08.38 +45 34 28.9           ~ 2 0
144 [KIS99] C49 Ce* 10 20 08.67 +45 34 13.8           ~ 2 0
145 [KIS99] C57 Ce* 10 20 08.70 +45 33 53.2           ~ 1 0
146 NGC 3319 SyG 10 39 09.533 +41 41 12.74   11.48 11.07     ~ 325 1

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