J/AJ/128/1167 ARAUCARIA project : NGC 300 Cepheid Variables. II (Gieren+, 2004)
The Araucaria project: an improved distance to the Sculptor spiral galaxy
NGC 300 from its Cepheid variables.
Gieren W., Pietrzynski G., Walker A., Bresolin F., Minniti D.,
Kudritzki R.-P., Udalski A., Soszynski I., Fouque P., Storm J., Bono G.
<Astron. J., 128, 1167-1176 (2004)>
=2004AJ....128.1167G 2004AJ....128.1167G
ADC_Keywords: Stars, variable ; Photometry, UBVRI
Keywords: Cepheids - distance scale - galaxies: distances and redshifts -
galaxies: individual (NGC 300) - galaxies: stellar content
Abstract:
We present VI data, derive improved periods and mean magnitudes for
the variables, and construct period-luminosity relations in the V, I,
and the reddening-independent V-I Wesenheit bands using 58 Cepheid
variables with periods between 11 and 90 days.
Description:
The data presented in this paper were collected with the Warsaw 1.3m
telescope at Las Campanas Observatory and the 4m telescope at CTIO
(Cerro Tololo Inter-American Observatory). Our observations started on
2002 October 5 and lasted until 2003 November 11.
Objects:
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RA (2000) DE Designation(s)
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00 54 53.5 -37 40 59 NGC 300
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 64 Cepheids in NGC 300
table2.dat 36 3042 Individual New V and I Observations
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See also:
J/AJ/123/789 : ARAUCARIA project: NGC 300 Cepheids (Pietrzynski+, 2002)
J/MNRAS/350/679 : BV photometry of NGC 300 variables (Mennickent+, 2004)
J/AJ/128/2815 : ARAUCARIA project: NGC 6822 Cepheids (Pietrzynski+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- [PGF2002] Cepheid number
8- 14 F7.3 d Per Period
17- 22 F6.4 [d] logPer Log of the period
24- 34 F11.3 d T0 Epoch of maximum brightness (in HJD) in V
36- 41 F6.3 mag <Vmag> Mean V magnitude
44- 49 F6.3 mag <Imag> Mean I magnitude
52- 57 F6.3 mag <WImag> Reddening-free V-I Wesenheit magnitude
WI, defined as WI=I-1.55(V-I)
60- 89 A30 --- Rem Remarks
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- [PGF2002] Cepheid number
8 A1 --- Filt [VI] Filter
10- 23 F14.6 d HJD Heliocentric Julian Date
25- 30 F6.3 mag mag Filter magnitude
32- 36 F5.3 mag e_mag Error in mag
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 02-Feb-2005