J/A+A/388/179 BVI photometry of two open clusters (Piatti+, 2002)
Two highly reddened young open clusters located beyond the Sagittarius arm
Piatti A.E., Claria J.J.
<Astron. Astrophys. 388, 179 (2002)>
=2002A&A...388..179P 2002A&A...388..179P
ADC_Keywords: Clusters, open ; Photometry, UBVRI
Keywords: open clusters and associations: individual: Pismis 23, BH 222 -
open clusters and associations: general - techniques: photometric
Abstract:
We present the results of CCD BVI Johnson-Cousins photometry down to
V∼19mag in the regions of the unstudied stellar groups Pismis 23 and
BH 222, both projected close to the direction towards the Galactic
centre. We measured V magnitude and B-V and V-I colours for a total of
928 stars in fields of about 4'x4'.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
16 23 58 -48 55 33 Cl Pismis 23
17 18 47 -38 17 22 Cl VDBH 222
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 60 627 Magnitudes and colours of stars in the field of
Pismis 23
table3.dat 60 301 Magnitudes and colours of stars in the field of
BH 222
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See also:
J/A+AS/107/39 : IC 2714 UBV photometry (Claria+ 1994)
J/ApJS/116/263 : VI photometry of open clusters (Piatti+ 1998)
J/A+AS/127/423 : VI photometry of Westerlund 1 and 2 (Piatti+ 1998)
J/A+AS/128/131 : UBV photometry of NGC 2323 (Claria+ 1998)
J/A+A/360/529 : BVI photometry of 4 young open clusters (Piatti+, 2000)
J/A+A/370/931 : BVI photometry of 4 open clusters (Piatti+, 2001)
J/A+A/375/30 : Radial velocities in open clusters (Mermilliod+, 2001)
J/A+A/379/453 : BVI photometry of 5 open cluster candidates (Piatti+, 2001)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Star number
5- 11 F7.3 pix Xpos X coordinates (1)
13- 19 F7.3 pix Ypos Y coordinates (1)
21- 26 F6.3 mag Vmag V magnitude
28- 32 F5.3 mag e_Vmag rms uncertainty on Vmag
34- 39 F6.3 mag B-V B-V colour index
41- 45 F5.3 mag e_B-V rms uncertainty on B-V
47- 52 F6.3 mag V-I V-I colour index
54- 58 F5.3 mag e_V-I rms uncertainty on V-I
60 I1 --- o_Vmag Number of measurements
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Note (1): North is increasing "X" coords and the East decreasing "Y" coords.
The origin of the coordinate system is (0,0) and
the pizel size is 0.45 arcsec/pix.
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Acknowledgements:
Andres Piatti
(End) Patricia Bauer [CDS] 09-Apr-2002