J/other/RMxAA/39.39 CCD Photometry of NGC 2658, 2849, 3247 (Ahumada, 2003)
CCD Photometry of the Open Clusters NGC 2658, NGC 2849, and NGC 3247
Ahumada J.A.
<Rev. Mex. Astron. Astrofis. 39, 39 (2003)>
=2003RMxAA..39...39A 2003RMxAA..39...39A
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, UBVRI ;
Photometry, Cousins
Keywords: open clusters and associations: general -
open clusters and associations: individual: NGC 2658, NGC 2849,
NGC 3247
Description:
CCD photometry of the galactic open clusters NGC 2658, NGC 2849, and
NGC 3247 is presented. For the first two clusters, BV(RI)_c data are
given, and for NGC 3247 the data are BV(I)_c. The observations were
carried out from the Complejo Astronomico El Leoncito (Argentina), and
from Las Campanas (Chile). Each cluster was observed on two different
nights; when possible, measurements for a given star were averaged.
NGC 2658 observations were carried out from CASLEO on the nights of
8-9 January 1997 and 18-19 April 2001, in the BVRI filters.
NGC 2849 data in the BVRI filters were obtained at Las Campanas on
the night 10-11 April 1996, and at CASLEO on 19-20 April 2001.
NGC 3247 was observed at CASLEO on the nights 16-17 January 1996 (BV)
and 1-2 April 1998 (BVI).
The given star coordinates are relative to the corresponding cluster
center.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 78 891 CCD BVRI photometry of NGC 2658
table5.dat 78 666 CCD BVRI photometry of NGC 2849
table6.dat 78 464 CCD BVI photometry of NGC 3247
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See also:
J/A+A/373/153 : CCD Δa-photometry of 5 open clusters (Paunzen+, 2001)
J/A+AS/109/375 : Blue stragglers in open clusters (Ahumada+, 1995)
Byte-by-byte Description of file: table4.dat table5.dat table6.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq Star number in the cluster
6- 12 F7.2 pix Xpos X coordinate (1)
14- 20 F7.2 pix Ypos Y coordinate (1)
22- 27 F6.3 mag Vmag V magnitude
29- 34 F6.3 mag e_Vmag Error of V magnitude
36- 41 F6.3 mag B-V B-V index
43- 48 F6.3 mag e_B-V Error of B-V index
50- 55 F6.3 mag V-Ic ? V-Ic index
57- 62 F6.3 mag e_V-Ic ? Error of V-Ic index
64- 69 F6.3 mag V-Rc ? V-Rc index (Not in table6.dat)
71- 76 F6.3 mag e_V-Rc ? Error of V-Rc index (Not in table6.dat)
78 I1 --- o_Vmag Number of observations
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Note (1): Coordinates of the centers:
NGC 2658: RA = 08h 43.4min , DE = -32° 39.9' (2000.0)
NGC 2849: RA = 09h 19.4min , DE = -40° 31.2' (2000.0)
NGC 3247: RA = 10h 26.9min , DE = -57° 55.7' (2000.0)
Est is to the left, North to the top.
The scale is 0.813arcsec/pix.
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Acknowledgements: William J. Henney
(End) W. Henney [Instituto de Astronomia, UNAM, Mexico] 28-Apr-2003