J/AJ/129/872 Stromgren photometry of NGC 2243 (Anthony-Twarog+, 2005)
uvbyCaHβ CCD photometry of clusters.
V. The metal-deficient open cluster NGC 2243.
Anthony-Twarog B.J., Atwell J., Twarog B.A.
<Astron. J., 129, 872-887 (2005)>
=2005AJ....129..872A 2005AJ....129..872A
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, uvby
Keywords: color-magnitude diagrams - open clusters and associations: individual
(NGC 2243, Berkeley 29, Berkeley 54)
Abstract:
CCD photometry on the intermediate-band uvbyCaHβ system is
presented for the metal-deficient open cluster NGC 2243.
Description:
The new photometric data for NGC 2243 were obtained using the
Cassegrain-focus CCD imager on the NOAO's 0.9m telescope at CTIO.
We used a Tektronix 2048x2048 detector at the f/13.5 focus of the
telescope, with CTIO's 4"x4" uvby filters and our own 3"x3" Hβ
and Ca filters. The field size is 13.5' on a side. Frames of all seven
filters were obtained in both 2000 November and 2002 January and were
preprocessed (bias subtraction, trimming, and flattening) through IRAF
routines at the telescope.
Objects:
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RA (2000) DE Designation(s)
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06 29 34.0 -31 17 00 NGC 2243 = C 0627-312
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 117 1266 Extended Stromgren photometry in NGC 2243
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See also:
J/AJ/125/1383 : Stromgren photometry of NGC 6253 (Anthony-Twarog+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq WEBDA primary identification number
7- 13 F7.2 pix Xpos WEBDA X pixel coordinate (1)
15- 21 F7.2 pix Ypos WEBDA Y pixel coordinate (1)
23- 28 F6.3 mag Vmag The V-band magnitude
30- 34 F5.3 mag b-y The Stromgren (b-y) color index
36- 41 F6.3 mag m1 ? The Stromgren m1 index magnitude
43- 48 F6.3 mag c1 ? The Stromgren c1 index magnitude
50- 54 F5.3 mag beta ? The Hβ index magnitude
56- 60 F5.3 mag hk ? The hk index magnitude [(Ca-b) - (b-y)]
62- 66 F5.3 mag e_Vmag Standard error of the mean in Vmag
68- 72 F5.3 mag e_b-y Standard error of the mean in b-y
74- 78 F5.3 mag e_m1 Standard error of the mean in m1
80- 84 F5.3 mag e_c1 Standard error of the mean in c1
86- 90 F5.3 mag e_beta Standard error of the mean in beta
92- 96 F5.3 mag e_hk Standard error of the mean in hk
98- 99 I2 --- Ny Number of y band frames
101-102 I2 --- Nb Number of b band frames
104-105 I2 --- Nv Number of v band frames
107-108 I2 --- Nu Number of u band frames
110-111 I2 --- Nw Number of w band frames
113-114 I2 --- Nn Number of n band frames
116-117 I2 --- NCa Number of Ca band frames
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Note (1): The coordinates for the cluster center are: α=06 29 35.18,
δ=-31 17 06.6, and the pixel angular size is: 0.61".
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History:
From electronic version of the journal
References:
Anthony-Twarog & Twarog, Paper I 2000AJ....119.2282A 2000AJ....119.2282A
Anthony-Twarog & Twarog, Paper II 2000AJ....120.3111A 2000AJ....120.3111A
Twarog et al., Paper III 2003AJ....125.1383T 2003AJ....125.1383T, Cat. J/AJ/125/1383
Anthony-Twarog & Twarog, Paper IV 2004AJ....127.1000A 2004AJ....127.1000A
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 30-Aug-2005